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Add Composer autoloading functions and PHPStan for testing

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Alex Cabal 2019-02-26 13:03:45 -06:00
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language: php
dist: xenial
sudo: false
cache:
directories:
- $HOME/.composer/cache
php:
- 7.0
- 7.1
- 7.2
- 7.3
- 7.4snapshot
- nightly
install:
- if [ $TRAVIS_PHP_VERSION = '7.0' ]; then composer require satooshi/php-coveralls '~1.0'; fi
- composer install --prefer-dist
matrix:
allow_failures:
- php: nightly
fast_finish: true
script:
- if [ $TRAVIS_PHP_VERSION = '7.0' ]; then vendor/bin/phpunit --coverage-clover build/logs/clover.xml; else vendor/bin/phpunit; fi
- if [ $TRAVIS_PHP_VERSION = '7.2' ]; then test_old/run-php-src.sh; fi
after_success:
- if [ $TRAVIS_PHP_VERSION = '7.0' ]; then php vendor/bin/coveralls; fi

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Version 4.2.2-dev
-----------------
Nothing yet.
Version 4.2.1 (2019-02-16)
--------------------------
### Added
* [PHP 7.4] Add support for `??=` operator through a new `AssignOp\Coalesce` node. (#575)
Version 4.2.0 (2019-01-12)
--------------------------
### Added
* [PHP 7.4] Add support for typed properties through a new `type` subnode of `Stmt\Property`.
Additionally `Builder\Property` now has a `setType()` method. (#567)
* Add `kind` attribute to `Cast\Double_`, which allows to distinguish between `(float)`,
`(double)` and `(real)`. The form of the cast will be preserved by the pretty printer. (#565)
### Fixed
* Remove assertion when pretty printing anonymous class with a name (#554).
Version 4.1.1 (2018-12-26)
--------------------------
### Fixed
* Fix "undefined offset" notice when parsing specific malformed code (#551).
### Added
* Support error recovery for missing return type (`function foo() : {}`) (#544).
Version 4.1.0 (2018-10-10)
--------------------------
### Added
* Added support for PHP 7.3 flexible heredoc/nowdoc strings, completing support for PHP 7.3. There
are two caveats for this feature:
* In some rare, pathological cases flexible heredoc/nowdoc strings change the interpretation of
existing doc strings. PHP-Parser will now use the new interpretation.
* Flexible heredoc/nowdoc strings require special support from the lexer. Because this is not
available on PHP versions before 7.3, support has to be emulated. This emulation is not perfect
and some cases which we do not expect to occur in practice (such as flexible doc strings being
nested within each other through abuse of variable-variable interpolation syntax) may not be
recognized correctly.
* Added `DONT_TRAVERSE_CURRENT_AND_CHILDREN` to `NodeTraverser` to skip both traversal of child
nodes, and prevent subsequent visitors from visiting the current node.
Version 4.0.4 (2018-09-18)
--------------------------
### Added
* The following methods have been added to `BuilderFactory`:
* `useTrait()` (fluent builder)
* `traitUseAdaptation()` (fluent builder)
* `useFunction()` (fluent builder)
* `useConst()` (fluent builder)
* `var()`
* `propertyFetch()`
### Deprecated
* `Builder\Param::setTypeHint()` has been deprecated in favor of the newly introduced
`Builder\Param::setType()`.
Version 4.0.3 (2018-07-15)
--------------------------
### Fixed
* Fixed possible undefined offset notice in formatting-preserving printer. (#513)
### Added
* Improved error recovery inside arrays.
* Preserve trailing comment inside classes. **Note:** This change is possibly BC breaking if your
code validates that classes can only contain certain statement types. After this change, classes
can also contain Nop statements, while this was not previously possible. (#509)
Version 4.0.2 (2018-06-03)
--------------------------
### Added
* Improved error recovery inside classes.
* Support error recovery for `foreach` without `as`.
* Support error recovery for parameters without variable (`function (Type ) {}`).
* Support error recovery for functions without body (`function ($foo)`).
Version 4.0.1 (2018-03-25)
--------------------------
### Added
* [PHP 7.3] Added support for trailing commas in function calls.
* [PHP 7.3] Added support for by-reference array destructuring.
* Added checks to node traverser to prevent replacing a statement with an expression or vice versa.
This should prevent common mistakes in the implementation of node visitors.
* Added the following methods to `BuilderFactory`, to simplify creation of expressions:
* `funcCall()`
* `methodCall()`
* `staticCall()`
* `new()`
* `constFetch()`
* `classConstFetch()`
Version 4.0.0 (2018-02-28)
--------------------------
* No significant code changes since the beta 1 release.
Version 4.0.0-beta1 (2018-01-27)
--------------------------------
### Fixed
* In formatting-preserving pretty printer: Fixed indentation when inserting into lists. (#466)
### Added
* In formatting-preserving pretty printer: Improved formatting of elements inserted into multi-line
arrays.
### Removed
* The `Autoloader` class has been removed. It is now required to use the Composer autoloader.
Version 4.0.0-alpha3 (2017-12-26)
---------------------------------
### Fixed
* In the formatting-preserving pretty printer:
* Fixed comment indentation.
* Fixed handling of inline HTML in the fallback case.
* Fixed insertion into list nodes that require creation of a code block.
### Added
* Added support for inserting at the start of list nodes in formatting-preserving pretty printer.
Version 4.0.0-alpha2 (2017-11-10)
---------------------------------
### Added
* In the formatting-preserving pretty printer:
* Added support for changing modifiers.
* Added support for anonymous classes.
* Added support for removing from list nodes.
* Improved support for changing comments.
* Added start token offsets to comments.
Version 4.0.0-alpha1 (2017-10-18)
---------------------------------
### Added
* Added experimental support for format-preserving pretty-printing. In this mode formatting will be
preserved for parts of the code which have not been modified.
* Added `replaceNodes` option to `NameResolver`, defaulting to true. If this option is disabled,
resolved names will be added as `resolvedName` attributes, instead of replacing the original
names.
* Added `NodeFinder` class, which can be used to find nodes based on a callback or class name. This
is a utility to avoid custom node visitor implementations for simple search operations.
* Added `ClassMethod::isMagic()` method.
* Added `BuilderFactory` methods: `val()` method for creating an AST for a simple value, `concat()`
for creating concatenation trees, `args()` for preparing function arguments.
* Added `NameContext` class, which encapsulates the `NameResolver` logic independently of the actual
AST traversal. This facilitates use in other context, such as class names in doc comments.
Additionally it provides an API for getting the shortest representation of a name.
* Added `Node::setAttributes()` method.
* Added `JsonDecoder`. This allows conversion JSON back into an AST.
* Added `Name` methods `toLowerString()` and `isSpecialClassName()`.
* Added `Identifier` and `VarLikeIdentifier` nodes, which are used in place of simple strings in
many places.
* Added `getComments()`, `getStartLine()`, `getEndLine()`, `getStartTokenPos()`, `getEndTokenPos()`,
`getStartFilePos()` and `getEndFilePos()` methods to `Node`. These provide a more obvious access
point for the already existing attributes of the same name.
* Added `ConstExprEvaluator` to evaluate constant expressions to PHP values.
* Added `Expr\BinaryOp::getOperatorSigil()`, returning `+` for `Expr\BinaryOp\Plus`, etc.
### Changed
* Many subnodes that previously held simple strings now use `Identifier` (or `VarLikeIdentifier`)
nodes. Please see the UPGRADE-4.0 file for an exhaustive list of affected nodes and some notes on
possible impact.
* Expression statements (`expr;`) are now represented using a `Stmt\Expression` node. Previously
these statements were directly represented as their constituent expression.
* The `name` subnode of `Param` has been renamed to `var` and now contains a `Variable` rather than
a plain string.
* The `name` subnode of `StaticVar` has been renamed to `var` and now contains a `Variable` rather
than a plain string.
* The `var` subnode of `ClosureUse` now contains a `Variable` rather than a plain string.
* The `var` subnode of `Catch` now contains a `Variable` rather than a plain string.
* The `alias` subnode of `UseUse` is now `null` if no explicit alias is given. As such,
`use Foo\Bar` and `use Foo\Bar as Bar` are now represented differently. The `getAlias()` method
can be used to get the effective alias, even if it is not explicitly given.
### Removed
* Support for running on PHP 5 and HHVM has been removed. You can however still parse code of old
PHP versions (such as PHP 5.2), while running on PHP 7.
* Removed `type` subnode on `Class`, `ClassMethod` and `Property` nodes. Use `flags` instead.
* The `ClassConst::isStatic()` method has been removed. Constants cannot have a static modifier.
* The `NodeTraverser` no longer accepts `false` as a return value from a `leaveNode()` method.
`NodeTraverser::REMOVE_NODE` should be returned instead.
* The `Node::setLine()` method has been removed. If you really need to, you can use `setAttribute()`
instead.
* The misspelled `Class_::VISIBILITY_MODIFER_MASK` constant has been dropped in favor of
`Class_::VISIBILITY_MODIFIER_MASK`.
* The XML serializer has been removed. As such, the classes `Serializer\XML`, and
`Unserializer\XML`, as well as the interfaces `Serializer` and `Unserializer` no longer exist.
* The `BuilderAbstract` class has been removed. It's functionality is moved into `BuilderHelpers`.
However, this is an internal class and should not be used directly.
Version 3.1.5 (2018-02-28)
--------------------------
### Fixed
* Fixed duplicate comment assignment in switch statements. (#469)
* Improve compatibility with PHP-Scoper. (#477)
Version 3.1.4 (2018-01-25)
--------------------------
### Fixed
* Fixed pretty printing of `-(-$x)` and `+(+$x)`. (#459)
Version 3.1.3 (2017-12-26)
--------------------------
### Fixed
* Improve compatibility with php-scoper, by supporting prefixed namespaces in
`NodeAbstract::getType()`.
Version 3.1.2 (2017-11-04)
--------------------------
### Fixed
* Comments on empty blocks are now preserved on a `Stmt\Nop` node. (#382)
### Added
* Added `kind` attribute for `Stmt\Namespace_` node, which is one of `KIND_SEMICOLON` or
`KIND_BRACED`. (#417)
* Added `setDocComment()` method to namespace builder. (#437)
Version 3.1.1 (2017-09-02)
--------------------------
### Fixed
* Fixed syntax error on comment after brace-style namespace declaration. (#412)
* Added support for TraitUse statements in trait builder. (#413)
Version 3.1.0 (2017-07-28)
--------------------------
### Added
* [PHP 7.2] Added support for trailing comma in group use statements.
* [PHP 7.2] Added support for `object` type. This means `object` types will now be represented as a
builtin type (a simple `"object"` string), rather than a class `Name`.
### Fixed
* Floating-point numbers are now printed correctly if the LC_NUMERIC locale uses a comma as decimal
separator.
### Changed
* `Name::$parts` is no longer deprecated.
Version 3.0.6 (2017-06-28)
--------------------------
### Fixed
* Fixed the spelling of `Class_::VISIBILITY_MODIFIER_MASK`. The previous spelling of
`Class_::VISIBILITY_MODIFER_MASK` is preserved for backwards compatibility.
* The pretty printing will now preserve comments inside array literals and function calls by
printing the array items / function arguments on separate lines. Array literals and functions that
do not contain comments are not affected.
### Added
* Added `Builder\Param::makeVariadic()`.
### Deprecated
* The `Node::setLine()` method has been deprecated.
Version 3.0.5 (2017-03-05)
--------------------------
### Fixed
* Name resolution of `NullableType`s is now performed earlier, so that a fully resolved signature is
available when a function is entered. (#360)
* `Error` nodes are now considered empty, while previously they extended until the token where the
error occurred. This made some nodes larger than expected. (#359)
* Fixed notices being thrown during error recovery in some situations. (#362)
Version 3.0.4 (2017-02-10)
--------------------------
### Fixed
* Fixed some extensibility issues in pretty printer (`pUseType()` is now public and `pPrec()` calls
into `p()`, instead of directly dispatching to the type-specific printing method).
* Fixed notice in `bin/php-parse` script.
### Added
* Error recovery from missing semicolons is now supported in more cases.
* Error recovery from trailing commas in positions where PHP does not support them is now supported.
Version 3.0.3 (2017-02-03)
--------------------------
### Fixed
* In `"$foo[0]"` the `0` is now parsed as an `LNumber` rather than `String`. (#325)
* Ensure integers and floats are always pretty printed preserving semantics, even if the particular
value can only be manually constructed.
* Throw a `LogicException` when trying to pretty-print an `Error` node. Previously this resulted in
an undefined method exception or fatal error.
### Added
* [PHP 7.1] Added support for negative interpolated offsets: `"$foo[-1]"`
* Added `preserveOriginalNames` option to `NameResolver`. If this option is enabled, an
`originalName` attribute, containing the unresolved name, will be added to each resolved name.
* Added `php-parse --with-positions` option, which dumps nodes with position information.
### Deprecated
* The XML serializer has been deprecated. In particular, the classes `Serializer\XML`,
`Unserializer\XML`, as well as the interfaces `Serializer` and `Unserializer` are deprecated.
Version 3.0.2 (2016-12-06)
--------------------------
### Fixed
* Fixed name resolution of nullable types. (#324)
* Fixed pretty-printing of nullable types.
Version 3.0.1 (2016-12-01)
--------------------------
### Fixed
* Fixed handling of nested `list()`s: If the nested list was unkeyed, it was directly included in
the list items. If it was keyed, it was wrapped in `ArrayItem`. Now nested `List_` nodes are
always wrapped in `ArrayItem`s. (#321)
Version 3.0.0 (2016-11-30)
--------------------------
### Added
* Added support for dumping node positions in the NodeDumper through the `dumpPositions` option.
* Added error recovery support for `$`, `new`, `Foo::`.
Version 3.0.0-beta2 (2016-10-29)
--------------------------------
This release primarily improves our support for error recovery.
### Added
* Added `Node::setDocComment()` method.
* Added `Error::getMessageWithColumnInfo()` method.
* Added support for recovery from lexer errors.
* Added support for recovering from "special" errors (i.e. non-syntax parse errors).
* Added precise location information for lexer errors.
* Added `ErrorHandler` interface, and `ErrorHandler\Throwing` and `ErrorHandler\Collecting` as
specific implementations. These provide a general mechanism for handling error recovery.
* Added optional `ErrorHandler` argument to `Parser::parse()`, `Lexer::startLexing()` and
`NameResolver::__construct()`.
* The `NameResolver` now adds a `namespacedName` attribute on name nodes that cannot be statically
resolved (unqualified unaliased function or constant names in namespaces).
### Fixed
* Fixed attribute assignment for `GroupUse` prefix and variables in interpolated strings.
### Changed
* The constants on `NameTraverserInterface` have been moved into the `NameTraverser` class.
* Due to the error handling changes, the `Parser` interface and `Lexer` API have changed.
* The emulative lexer now directly postprocesses tokens, instead of using `~__EMU__~` sequences.
This changes the protected API of the lexer.
* The `Name::slice()` method now returns `null` for empty slices, previously `new Name([])` was
used. `Name::concat()` now also supports concatenation with `null`.
### Removed
* Removed `Name::append()` and `Name::prepend()`. These mutable methods have been superseded by
the immutable `Name::concat()`.
* Removed `Error::getRawLine()` and `Error::setRawLine()`. These methods have been superseded by
`Error::getStartLine()` and `Error::setStartLine()`.
* Removed support for node cloning in the `NodeTraverser`.
* Removed `$separator` argument from `Name::toString()`.
* Removed `throw_on_error` parser option and `Parser::getErrors()` method. Use the `ErrorHandler`
mechanism instead.
Version 3.0.0-beta1 (2016-09-16)
--------------------------------
### Added
* [7.1] Function/method and parameter builders now support PHP 7.1 type hints (void, iterable and
nullable types).
* Nodes and Comments now implement `JsonSerializable`. The node kind is stored in a `nodeType`
property.
* The `InlineHTML` node now has an `hasLeadingNewline` attribute, that specifies whether the
preceding closing tag contained a newline. The pretty printer honors this attribute.
* Partial parsing of `$obj->` (with missing property name) is now supported in error recovery mode.
* The error recovery mode is now exposed in the `php-parse` script through the `--with-recovery`
or `-r` flags.
The following changes are also part of PHP-Parser 2.1.1:
* The PHP 7 parser will now generate a parse error for `$var =& new Obj` assignments.
* Comments on free-standing code blocks will now be retained as comments on the first statement in
the code block.
Version 3.0.0-alpha1 (2016-07-25)
---------------------------------
### Added
* [7.1] Added support for `void` and `iterable` types. These will now be represented as strings
(instead of `Name` instances) similar to other builtin types.
* [7.1] Added support for class constant visibility. The `ClassConst` node now has a `flags` subnode
holding the visibility modifier, as well as `isPublic()`, `isProtected()` and `isPrivate()`
methods. The constructor changed to accept the additional subnode.
* [7.1] Added support for nullable types. These are represented using a new `NullableType` node
with a single `type` subnode.
* [7.1] Added support for short array destructuring syntax. This means that `Array` nodes may now
appear as the left-hand-side of assignments and foreach value targets. Additionally the array
items may now contain `null` values if elements are skipped.
* [7.1] Added support for keys in list() destructuring. The `List` subnode `vars` has been renamed
to `items` and now contains `ArrayItem`s instead of plain variables.
* [7.1] Added support for multi-catch. The `Catch` subnode `type` has been renamed to `types` and
is now an array of `Name`s.
* `Name::slice()` now supports lengths and negative offsets. This brings it in line with
`array_slice()` functionality.
### Changed
Due to PHP 7.1 support additions described above, the node structure changed as follows:
* `void` and `iterable` types are now stored as strings if the PHP 7 parser is used.
* The `ClassConst` constructor changed to accept an additional `flags` subnode.
* The `Array` subnode `items` may now contain `null` elements (destructuring).
* The `List` subnode `vars` has been renamed to `items` and now contains `ArrayItem`s instead of
plain variables.
* The `Catch` subnode `type` has been renamed to `types` and is now an array of `Name`s.
Additionally the following changes were made:
* The `type` subnode on `Class`, `ClassMethod` and `Property` has been renamed to `flags`. The
`type` subnode has retained for backwards compatibility and is populated to the same value as
`flags`. However, writes to `type` will not update `flags`.
* The `TryCatch` subnode `finallyStmts` has been replaced with a `finally` subnode that holds an
explicit `Finally` node. This allows for more accurate attribute assignment.
* The `Trait` constructor now has the same form as the `Class` and `Interface` constructors: It
takes an array of subnodes. Unlike classes/interfaces, traits can only have a `stmts` subnode.
* The `NodeDumper` now prints class/method/property/constant modifiers, as well as the include and
use type in a textual representation, instead of only showing the number.
* All methods on `PrettyPrinter\Standard` are now protected. Previously most of them were public.
### Removed
* Removed support for running on PHP 5.4. It is however still possible to parse PHP 5.2-5.4 code
while running on a newer version.
* The deprecated `Comment::setLine()` and `Comment::setText()` methods have been removed.
* The deprecated `Name::set()`, `Name::setFirst()` and `Name::setLast()` methods have been removed.
Version 2.1.1 (2016-09-16)
--------------------------
### Changed
* The pretty printer will now escape all control characters in the range `\x00-\x1F` inside double
quoted strings. If no special escape sequence is available, an octal escape will be used.
* The quality of the error recovery has been improved. In particular unterminated expressions should
be handled more gracefully.
* The PHP 7 parser will now generate a parse error for `$var =& new Obj` assignments.
* Comments on free-standing code blocks will no be retained as comments on the first statement in
the code block.
Version 2.1.0 (2016-04-19)
--------------------------
### Fixed
* Properly support `B""` strings (with uppercase `B`) in a number of places.
* Fixed reformatting of indented parts in a certain non-standard comment style.
### Added
* Added `dumpComments` option to node dumper, to enable dumping of comments associated with nodes.
* Added `Stmt\Nop` node, that is used to collect comments located at the end of a block or at the
end of a file (without a following node with which they could otherwise be associated).
* Added `kind` attribute to `Expr\Exit` to distinguish between `exit` and `die`.
* Added `kind` attribute to `Scalar\LNumber` to distinguish between decimal, binary, octal and
hexadecimal numbers.
* Added `kind` attribute to `Expr\Array` to distinguish between `array()` and `[]`.
* Added `kind` attribute to `Scalar\String` and `Scalar\Encapsed` to distinguish between
single-quoted, double-quoted, heredoc and nowdoc string.
* Added `docLabel` attribute to `Scalar\String` and `Scalar\Encapsed`, if it is a heredoc or
nowdoc string.
* Added start file offset information to `Comment` nodes.
* Added `setReturnType()` method to function and method builders.
* Added `-h` and `--help` options to `php-parse` script.
### Changed
* Invalid octal literals now throw a parse error in PHP 7 mode.
* The pretty printer takes all the new attributes mentioned in the previous section into account.
* The protected `AbstractPrettyPrinter::pComments()` method no longer returns a trailing newline.
* The bundled autoloader supports library files being stored in a different directory than
`PhpParser` for easier downstream distribution.
### Deprecated
* The `Comment::setLine()` and `Comment::setText()` methods have been deprecated. Construct new
objects instead.
### Removed
* The internal (but public) method `Scalar\LNumber::parse()` has been removed. A non-internal
`LNumber::fromString()` method has been added instead.
Version 2.0.1 (2016-02-28)
--------------------------
### Fixed
* `declare() {}` and `declare();` are not semantically equivalent and will now result in different
ASTs. The format case will have an empty `stmts` array, while the latter will set `stmts` to
`null`.
* Magic constants are now supported as semi-reserved keywords.
* A shebang line like `#!/usr/bin/env php` is now allowed at the start of a namespaced file.
Previously this generated an exception.
* The `prettyPrintFile()` method will not strip a trailing `?>` from the raw data that follows a
`__halt_compiler()` statement.
* The `prettyPrintFile()` method will not strip an opening `<?php` if the file starts with a
comment followed by InlineHTML.
Version 2.0.0 (2015-12-04)
--------------------------
### Changed
* String parts of encapsed strings are now represented using `Scalar\EncapsStringPart` nodes.
Previously raw strings were used. This affects the `parts` child of `Scalar\Encaps` and
`Expr\ShellExec`. The change has been done to allow assignment of attributes to encapsed string
parts.
Version 2.0.0-beta1 (2015-10-21)
--------------------------------
### Fixed
* Fixed issue with too many newlines being stripped at the end of heredoc/nowdoc strings in some
cases. (#227)
### Changed
* Update group use support to be in line with recent PHP 7.0 builds.
* Renamed `php-parse.php` to `php-parse` and registered it as a composer bin.
* Use composer PSR-4 autoloader instead of custom autoloader.
* Specify phpunit as a dev dependency.
### Added
* Added `shortArraySyntax` option to pretty printer, to print all arrays using short syntax.
Version 2.0.0-alpha1 (2015-07-14)
---------------------------------
A more detailed description of backwards incompatible changes can be found in the
[upgrading guide](UPGRADE-2.0.md).
### Removed
* Removed support for running on PHP 5.3. It is however still possible to parse PHP 5.2 and PHP 5.3
code while running on a newer version.
* Removed legacy class name aliases. This includes the old non-namespaced class names and the old
names for classes that were renamed for PHP 7 compatibility.
* Removed support for legacy node format. All nodes must have a `getSubNodeNames()` method now.
### Added
* Added support for remaining PHP 7 features that were not present in 1.x:
* Group use declarations. These are represented using `Stmt\GroupUse` nodes. Furthermore a `type`
attribute was added to `Stmt\UseUse` to handle mixed group use declarations.
* Uniform variable syntax.
* Generalized yield operator.
* Scalar type declarations. These are presented using `'bool'`, `'int'`, `'float'` and `'string'`
as the type. The PHP 5 parser also accepts these, however they'll be `Name` instances there.
* Unicode escape sequences.
* Added `PhpParser\ParserFactory` class, which should be used to create parser instances.
* Added `Name::concat()` which concatenates two names.
* Added `Name->slice()` which takes a subslice of a name.
### Changed
* `PhpParser\Parser` is now an interface, implemented by `Parser\Php5`, `Parser\Php7` and
`Parser\Multiple`. The `Multiple` parser will try multiple parsers, until one succeeds.
* Token constants are now defined on `PhpParser\Parser\Tokens` rather than `PhpParser\Parser`.
* The `Name->set()`, `Name->append()`, `Name->prepend()` and `Name->setFirst()` methods are
deprecated in favor of `Name::concat()` and `Name->slice()`.
* The `NodeTraverser` no longer clones nodes by default. The old behavior can be restored by
passing `true` to the constructor.
* The constructor for `Scalar` nodes no longer has a default value. E.g. `new LNumber()` should now
be written as `new LNumber(0)`.
---
**This changelog only includes changes from the 2.0 series. For older changes see the
[1.x series changelog](https://github.com/nikic/PHP-Parser/blob/1.x/CHANGELOG.md) and the
[0.9 series changelog](https://github.com/nikic/PHP-Parser/blob/0.9/CHANGELOG.md).**

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Copyright (c) 2011-2018 by Nikita Popov.
Some rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following
disclaimer in the documentation and/or other materials provided
with the distribution.
* The names of the contributors may not be used to endorse or
promote products derived from this software without specific
prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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PHP Parser
==========
[![Build Status](https://travis-ci.org/nikic/PHP-Parser.svg?branch=master)](https://travis-ci.org/nikic/PHP-Parser) [![Coverage Status](https://coveralls.io/repos/github/nikic/PHP-Parser/badge.svg?branch=master)](https://coveralls.io/github/nikic/PHP-Parser?branch=master)
This is a PHP 5.2 to PHP 7.3 parser written in PHP. Its purpose is to simplify static code analysis and
manipulation.
[**Documentation for version 4.x**][doc_master] (stable; for running on PHP >= 7.0; for parsing PHP 5.2 to PHP 7.3).
[Documentation for version 3.x][doc_3_x] (unsupported; for running on PHP >= 5.5; for parsing PHP 5.2 to PHP 7.2).
Features
--------
The main features provided by this library are:
* Parsing PHP 5 and PHP 7 code into an abstract syntax tree (AST).
* Invalid code can be parsed into a partial AST.
* The AST contains accurate location information.
* Dumping the AST in human-readable form.
* Converting an AST back to PHP code.
* Experimental: Formatting can be preserved for partially changed ASTs.
* Infrastructure to traverse and modify ASTs.
* Resolution of namespaced names.
* Evaluation of constant expressions.
* Builders to simplify AST construction for code generation.
* Converting an AST into JSON and back.
Quick Start
-----------
Install the library using [composer](https://getcomposer.org):
php composer.phar require nikic/php-parser
Parse some PHP code into an AST and dump the result in human-readable form:
```php
<?php
use PhpParser\Error;
use PhpParser\NodeDumper;
use PhpParser\ParserFactory;
$code = <<<'CODE'
<?php
function test($foo)
{
var_dump($foo);
}
CODE;
$parser = (new ParserFactory)->create(ParserFactory::PREFER_PHP7);
try {
$ast = $parser->parse($code);
} catch (Error $error) {
echo "Parse error: {$error->getMessage()}\n";
return;
}
$dumper = new NodeDumper;
echo $dumper->dump($ast) . "\n";
```
This dumps an AST looking something like this:
```
array(
0: Stmt_Function(
byRef: false
name: Identifier(
name: test
)
params: array(
0: Param(
type: null
byRef: false
variadic: false
var: Expr_Variable(
name: foo
)
default: null
)
)
returnType: null
stmts: array(
0: Stmt_Expression(
expr: Expr_FuncCall(
name: Name(
parts: array(
0: var_dump
)
)
args: array(
0: Arg(
value: Expr_Variable(
name: foo
)
byRef: false
unpack: false
)
)
)
)
)
)
)
```
Let's traverse the AST and perform some kind of modification. For example, drop all function bodies:
```php
use PhpParser\Node;
use PhpParser\Node\Stmt\Function_;
use PhpParser\NodeTraverser;
use PhpParser\NodeVisitorAbstract;
$traverser = new NodeTraverser();
$traverser->addVisitor(new class extends NodeVisitorAbstract {
public function enterNode(Node $node) {
if ($node instanceof Function_) {
// Clean out the function body
$node->stmts = [];
}
}
});
$ast = $traverser->traverse($ast);
echo $dumper->dump($ast) . "\n";
```
This gives us an AST where the `Function_::$stmts` are empty:
```
array(
0: Stmt_Function(
byRef: false
name: Identifier(
name: test
)
params: array(
0: Param(
type: null
byRef: false
variadic: false
var: Expr_Variable(
name: foo
)
default: null
)
)
returnType: null
stmts: array(
)
)
)
```
Finally, we can convert the new AST back to PHP code:
```php
use PhpParser\PrettyPrinter;
$prettyPrinter = new PrettyPrinter\Standard;
echo $prettyPrinter->prettyPrintFile($ast);
```
This gives us our original code, minus the `var_dump()` call inside the function:
```php
<?php
function test($foo)
{
}
```
For a more comprehensive introduction, see the documentation.
Documentation
-------------
1. [Introduction](doc/0_Introduction.markdown)
2. [Usage of basic components](doc/2_Usage_of_basic_components.markdown)
Component documentation:
* [Walking the AST](doc/component/Walking_the_AST.markdown)
* Node visitors
* Modifying the AST from a visitor
* Short-circuiting traversals
* Interleaved visitors
* Simple node finding API
* Parent and sibling references
* [Name resolution](doc/component/Name_resolution.markdown)
* Name resolver options
* Name resolution context
* [Pretty printing](doc/component/Pretty_printing.markdown)
* Converting AST back to PHP code
* Customizing formatting
* Formatting-preserving code transformations
* [AST builders](doc/component/AST_builders.markdown)
* Fluent builders for AST nodes
* [Lexer](doc/component/Lexer.markdown)
* Lexer options
* Token and file positions for nodes
* Custom attributes
* [Error handling](doc/component/Error_handling.markdown)
* Column information for errors
* Error recovery (parsing of syntactically incorrect code)
* [Constant expression evaluation](doc/component/Constant_expression_evaluation.markdown)
* Evaluating constant/property/etc initializers
* Handling errors and unsupported expressions
* [JSON representation](doc/component/JSON_representation.markdown)
* JSON encoding and decoding of ASTs
* [Performance](doc/component/Performance.markdown)
* Disabling XDebug
* Reusing objects
* Garbage collection impact
* [Frequently asked questions](doc/component/FAQ.markdown)
* Parent and sibling references
[doc_3_x]: https://github.com/nikic/PHP-Parser/tree/3.x/doc
[doc_master]: https://github.com/nikic/PHP-Parser/tree/master/doc

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Upgrading from PHP-Parser 0.9 to 1.0
====================================
### PHP version requirements
PHP-Parser now requires PHP 5.3 or newer to run. It is however still possible to *parse* PHP 5.2 source code, while
running on a newer version.
### Move to namespaced names
The library has been moved to use namespaces with the `PhpParser` vendor prefix. However, the old names using
underscores are still available as aliases, as such most code should continue running on the new version without
further changes.
Old (still works, but discouraged):
```php
$parser = new \PHPParser_Parser(new \PHPParser_Lexer_Emulative);
$prettyPrinter = new \PHPParser_PrettyPrinter_Default;
```
New:
```php
$parser = new \PhpParser\Parser(new PhpParser\Lexer\Emulative);
$prettyPrinter = new \PhpParser\PrettyPrinter\Standard;
```
Note that the `PHPParser` prefix was changed to `PhpParser`. While PHP class names are technically case-insensitive,
the autoloader will not be able to load `PHPParser\Parser` or other case variants.
Due to conflicts with reserved keywords, some class names now end with an underscore, e.g. `PHPParser_Node_Stmt_Class`
is now `PhpParser\Node\Stmt\Class_`. (But as usual, the old name is still available.)
### Changes to `Node::getType()`
The `Node::getType()` method continues to return names using underscores instead of namespace separators and also does
not contain the trailing underscore that may be present in the class name. As such its output will not change in many
cases.
However, some node classes have been moved to a different namespace or renamed, which will result in a different
`Node::getType()` output:
```
Expr_AssignBitwiseAnd => Expr_AssignOp_BitwiseAnd
Expr_AssignBitwiseOr => Expr_AssignOp_BitwiseOr
Expr_AssignBitwiseXor => Expr_AssignOp_BitwiseXor
Expr_AssignConcat => Expr_AssignOp_Concat
Expr_AssignDiv => Expr_AssignOp_Div
Expr_AssignMinus => Expr_AssignOp_Minus
Expr_AssignMod => Expr_AssignOp_Mod
Expr_AssignMul => Expr_AssignOp_Mul
Expr_AssignPlus => Expr_AssignOp_Plus
Expr_AssignShiftLeft => Expr_AssignOp_ShiftLeft
Expr_AssignShiftRight => Expr_AssignOp_ShiftRight
Expr_BitwiseAnd => Expr_BinaryOp_BitwiseAnd
Expr_BitwiseOr => Expr_BinaryOp_BitwiseOr
Expr_BitwiseXor => Expr_BinaryOp_BitwiseXor
Expr_BooleanAnd => Expr_BinaryOp_BooleanAnd
Expr_BooleanOr => Expr_BinaryOp_BooleanOr
Expr_Concat => Expr_BinaryOp_Concat
Expr_Div => Expr_BinaryOp_Div
Expr_Equal => Expr_BinaryOp_Equal
Expr_Greater => Expr_BinaryOp_Greater
Expr_GreaterOrEqual => Expr_BinaryOp_GreaterOrEqual
Expr_Identical => Expr_BinaryOp_Identical
Expr_LogicalAnd => Expr_BinaryOp_LogicalAnd
Expr_LogicalOr => Expr_BinaryOp_LogicalOr
Expr_LogicalXor => Expr_BinaryOp_LogicalXor
Expr_Minus => Expr_BinaryOp_Minus
Expr_Mod => Expr_BinaryOp_Mod
Expr_Mul => Expr_BinaryOp_Mul
Expr_NotEqual => Expr_BinaryOp_NotEqual
Expr_NotIdentical => Expr_BinaryOp_NotIdentical
Expr_Plus => Expr_BinaryOp_Plus
Expr_ShiftLeft => Expr_BinaryOp_ShiftLeft
Expr_ShiftRight => Expr_BinaryOp_ShiftRight
Expr_Smaller => Expr_BinaryOp_Smaller
Expr_SmallerOrEqual => Expr_BinaryOp_SmallerOrEqual
Scalar_ClassConst => Scalar_MagicConst_Class
Scalar_DirConst => Scalar_MagicConst_Dir
Scalar_FileConst => Scalar_MagicConst_File
Scalar_FuncConst => Scalar_MagicConst_Function
Scalar_LineConst => Scalar_MagicConst_Line
Scalar_MethodConst => Scalar_MagicConst_Method
Scalar_NSConst => Scalar_MagicConst_Namespace
Scalar_TraitConst => Scalar_MagicConst_Trait
```
These changes may affect custom pretty printers and code comparing the return value of `Node::getType()` to specific
strings.
### Miscellaneous
* The classes `Template` and `TemplateLoader` have been removed. You should use some other [code generation][code_gen]
project built on top of PHP-Parser instead.
* The `PrettyPrinterAbstract::pStmts()` method now emits a leading newline if the statement list is not empty.
Custom pretty printers should remove the explicit newline before `pStmts()` calls.
Old:
```php
public function pStmt_Trait(PHPParser_Node_Stmt_Trait $node) {
return 'trait ' . $node->name
. "\n" . '{' . "\n" . $this->pStmts($node->stmts) . "\n" . '}';
}
```
New:
```php
public function pStmt_Trait(Stmt\Trait_ $node) {
return 'trait ' . $node->name
. "\n" . '{' . $this->pStmts($node->stmts) . "\n" . '}';
}
```
[code_gen]: https://github.com/nikic/PHP-Parser/wiki/Projects-using-the-PHP-Parser#code-generation

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Upgrading from PHP-Parser 1.x to 2.0
====================================
### PHP version requirements
PHP-Parser now requires PHP 5.4 or newer to run. It is however still possible to *parse* PHP 5.2 and
PHP 5.3 source code, while running on a newer version.
### Creating a parser instance
Parser instances should now be created through the `ParserFactory`. Old direct instantiation code
will not work, because the parser class was renamed.
Old:
```php
use PhpParser\Parser, PhpParser\Lexer;
$parser = new Parser(new Lexer\Emulative);
```
New:
```php
use PhpParser\ParserFactory;
$parser = (new ParserFactory)->create(ParserFactory::PREFER_PHP7);
```
The first argument to `ParserFactory` determines how different PHP versions are handled. The
possible values are:
* `ParserFactory::PREFER_PHP7`: Try to parse code as PHP 7. If this fails, try to parse it as PHP 5.
* `ParserFactory::PREFER_PHP5`: Try to parse code as PHP 5. If this fails, try to parse it as PHP 7.
* `ParserFactory::ONLY_PHP7`: Parse code as PHP 7.
* `ParserFactory::ONLY_PHP5`: Parse code as PHP 5.
For most practical purposes the difference between `PREFER_PHP7` and `PREFER_PHP5` is mainly whether
a scalar type hint like `string` will be stored as `'string'` (PHP 7) or as `new Name('string')`
(PHP 5).
To use a custom lexer, pass it as the second argument to the `create()` method:
```php
use PhpParser\ParserFactory;
$lexer = new MyLexer;
$parser = (new ParserFactory)->create(ParserFactory::PREFER_PHP7, $lexer);
```
### Rename of the `PhpParser\Parser` class
`PhpParser\Parser` is now an interface, which is implemented by `Parser\Php5`, `Parser\Php7` and
`Parser\Multiple`. Parser tokens are now defined in `Parser\Tokens`. If you use the `ParserFactory`
described above to create your parser instance, these changes should have no further impact on you.
### Removal of legacy aliases
All legacy aliases for classes have been removed. This includes the old non-namespaced `PHPParser_`
classes, as well as the classes that had to be renamed for PHP 7 support.
### Deprecations
The `set()`, `setFirst()`, `append()` and `prepend()` methods of the `Node\Name` class have been
deprecated. Instead `Name::concat()` and `Name->slice()` should be used.
### Miscellaneous
* The `NodeTraverser` no longer clones nodes by default. If you want to restore the old behavior,
pass `true` to the constructor.
* The legacy node format has been removed. If you use custom nodes, they are now expected to
implement a `getSubNodeNames()` method.
* The default value for `Scalar` node constructors was removed. This means that something like
`new LNumber()` should be replaced by `new LNumber(0)`.
* String parts of encapsed strings are now represented using `Scalar\EncapsStringPart` nodes, while
previously raw strings were used. This affects the `parts` child of `Scalar\Encaps` and
`Expr\ShellExec`.

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Upgrading from PHP-Parser 2.x to 3.0
====================================
The backwards-incompatible changes in this release may be summarized as follows:
* The specific details of the node representation have changed in some cases, primarily to
accommodate new PHP 7.1 features.
* There have been significant changes to the error recovery implementation. This may affect you,
if you used the error recovery mode or have a custom lexer implementation.
* A number of deprecated methods were removed.
### PHP version requirements
PHP-Parser now requires PHP 5.5 or newer to run. It is however still possible to *parse* PHP 5.2,
5.3 and 5.4 source code, while running on a newer version.
### Changes to the node structure
The following changes are likely to require code changes if the respective nodes are used:
* The `List` subnode `vars` has been renamed to `items` and now contains `ArrayItem`s instead of
plain variables.
* The `Catch` subnode `type` has been renamed to `types` and is now an array of `Name`s.
* The `TryCatch` subnode `finallyStmts` has been replaced with a `finally` subnode that holds an
explicit `Finally` node.
* The `type` subnode on `Class`, `ClassMethod` and `Property` has been renamed to `flags`. The
`type` subnode has retained for backwards compatibility and is populated to the same value as
`flags`. However, writes to `type` will not update `flags` and use of `type` is discouraged.
The following changes are unlikely to require code changes:
* The `ClassConst` constructor changed to accept an additional `flags` subnode.
* The `Trait` constructor now has the same form as the `Class` and `Interface` constructors: It
takes an array of subnodes. Unlike classes/interfaces, traits can only have a `stmts` subnode.
* The `Array` subnode `items` may now contain `null` elements (due to destructuring).
* `void` and `iterable` types are now stored as strings if the PHP 7 parser is used. Previously
these would have been represented as `Name` instances.
### Changes to error recovery mode
Previously, error recovery mode was enabled by setting the `throwOnError` option to `false` when
creating the parser, while collected errors were retrieved using the `getErrors()` method:
```php
$lexer = ...;
$parser = (new ParserFactory)->create(ParserFactor::ONLY_PHP7, $lexer, [
'throwOnError' => true,
]);
$stmts = $parser->parse($code);
$errors = $parser->getErrors();
if ($errors) {
handleErrors($errors);
}
processAst($stmts);
```
Both the `throwOnError` option and the `getErrors()` method have been removed in PHP-Parser 3.0.
Instead an instance of `ErrorHandler\Collecting` should be passed to the `parse()` method:
```php
$lexer = ...;
$parser = (new ParserFactory)->create(ParserFactor::ONLY_PHP7, $lexer);
$errorHandler = new ErrorHandler\Collecting;
$stmts = $parser->parse($code, $errorHandler);
if ($errorHandler->hasErrors()) {
handleErrors($errorHandler->getErrors());
}
processAst($stmts);
```
#### Multiple parser fallback in error recovery mode
As a result of this change, if a `Multiple` parser is used (e.g. through the `ParserFactory` using
`PREFER_PHP7` or `PREFER_PHP5`), it will now return the result of the first *non-throwing* parse. As
parsing never throws in error recovery mode, the result from the first parser will always be
returned.
The PHP 7 parser is a superset of the PHP 5 parser, with the exceptions that `=& new` and
`global $$foo->bar` are not supported (other differences are in representation only). The PHP 7
parser will be able to recover from the error in both cases. For this reason, this change will
likely pass unnoticed if you do not specifically test for this syntax.
It is possible to restore the precise previous behavior with the following code:
```php
$lexer = ...;
$parser7 = new Parser\Php7($lexer);
$parser5 = new Parser\Php5($lexer);
$errors7 = new ErrorHandler\Collecting();
$stmts7 = $parser7->parse($code, $errors7);
if ($errors7->hasErrors()) {
$errors5 = new ErrorHandler\Collecting();
$stmts5 = $parser5->parse($code, $errors5);
if (!$errors5->hasErrors()) {
// If PHP 7 parse has errors but PHP 5 parse has no errors, use PHP 5 result
return [$stmts5, $errors5];
}
}
// If PHP 7 succeeds or both fail use PHP 7 result
return [$stmts7, $errors7];
```
#### Error handling in the lexer
In order to support recovery from lexer errors, the signature of the `startLexing()` method changed
to optionally accept an `ErrorHandler`:
```php
// OLD
public function startLexing($code);
// NEW
public function startLexing($code, ErrorHandler $errorHandler = null);
```
If you use a custom lexer with overridden `startLexing()` method, it needs to be changed to accept
the extra parameter. The value should be passed on to the parent method.
#### Error checks in node constructors
The constructors of certain nodes used to contain additional checks for semantic errors, such as
creating a try block without either catch or finally. These checks have been moved from the node
constructors into the parser. This allows recovery from such errors, as well as representing the
resulting (invalid) AST.
This means that certain error conditions are no longer checked for manually constructed nodes.
### Removed methods, arguments, options
The following methods, arguments or options have been removed:
* `Comment::setLine()`, `Comment::setText()`: Create new `Comment` instances instead.
* `Name::set()`, `Name::setFirst()`, `Name::setLast()`, `Name::append()`, `Name::prepend()`:
Use `Name::concat()` in combination with `Name::slice()` instead.
* `Error::getRawLine()`, `Error::setRawLine()`. Use `Error::getStartLine()` and
`Error::setStartLine()` instead.
* `Parser::getErrors()`. Use `ErrorHandler\Collecting` instead.
* `$separator` argument of `Name::toString()`. Use `strtr()` instead, if you really need it.
* `$cloneNodes` argument of `NodeTraverser::__construct()`. Explicitly clone nodes in the visitor
instead.
* `throwOnError` parser option. Use `ErrorHandler\Collecting` instead.
### Miscellaneous
* The `NameResolver` will now resolve unqualified function and constant names in the global
namespace into fully qualified names. For example `foo()` in the global namespace resolves to
`\foo()`. For names where no static resolution is possible, a `namespacedName` attribute is
added now, containing the namespaced variant of the name.
* All methods on `PrettyPrinter\Standard` are now protected. Previously most of them were public.
The pretty printer should only be invoked using the `prettyPrint()`, `prettyPrintFile()` and
`prettyPrintExpr()` methods.
* The node dumper now prints numeric values that act as enums/flags in a string representation.
If node dumper results are used in tests, updates may be needed to account for this.
* The constants on `NameTraverserInterface` have been moved into the `NameTraverser` class.
* The emulative lexer now directly postprocesses tokens, instead of using `~__EMU__~` sequences.
This changes the protected API of the emulative lexer.
* The `Name::slice()` method now returns `null` for empty slices, previously `new Name([])` was
used. `Name::concat()` now also supports concatenation with `null`.

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Upgrading from PHP-Parser 3.x to 4.0
====================================
### PHP version requirements
PHP-Parser now requires PHP 7.0 or newer to run. It is however still possible to *parse* PHP 5.2-5.6
source code, while running on a newer version.
HHVM is no longer actively supported.
### Changes to the node structure
* Many subnodes that previously held simple strings now store `Identifier` nodes instead (or
`VarLikeIdentifier` nodes if they have form `$ident`). The constructors of the affected nodes will
automatically convert strings to `Identifier`s and `Identifier`s implement `__toString()`. As such
some code continues to work without changes, but anything using `is_string()`, type-strict
comparisons or strict-mode may require adjustment. The following is an exhaustive list of all
affected subnodes:
* `Const_::$name`
* `NullableType::$type` (for simple types)
* `Param::$type` (for simple types)
* `Expr\ClassConstFetch::$name`
* `Expr\Closure::$returnType` (for simple types)
* `Expr\MethodCall::$name`
* `Expr\PropertyFetch::$name`
* `Expr\StaticCall::$name`
* `Expr\StaticPropertyFetch::$name` (uses `VarLikeIdentifier`)
* `Stmt\Class_::$name`
* `Stmt\ClassMethod::$name`
* `Stmt\ClassMethod::$returnType` (for simple types)
* `Stmt\Function_::$name`
* `Stmt\Function_::$returnType` (for simple types)
* `Stmt\Goto_::$name`
* `Stmt\Interface_::$name`
* `Stmt\Label::$name`
* `Stmt\PropertyProperty::$name` (uses `VarLikeIdentifier`)
* `Stmt\TraitUseAdaptation\Alias::$method`
* `Stmt\TraitUseAdaptation\Alias::$newName`
* `Stmt\TraitUseAdaptation\Precedence::$method`
* `Stmt\Trait_::$name`
* `Stmt\UseUse::$alias`
* Expression statements (`expr;`) are now represented using a `Stmt\Expression` node. Previously
these statements were directly represented as their constituent expression.
* The `name` subnode of `Param` has been renamed to `var` and now contains a `Variable` rather than
a plain string.
* The `name` subnode of `StaticVar` has been renamed to `var` and now contains a `Variable` rather
than a plain string.
* The `var` subnode of `ClosureUse` now contains a `Variable` rather than a plain string.
* The `var` subnode of `Catch_` now contains a `Variable` rather than a plain string.
* The `alias` subnode of `UseUse` is now `null` if no explicit alias is given. As such,
`use Foo\Bar` and `use Foo\Bar as Bar` are now represented differently. The `getAlias()` method
can be used to get the effective alias, even if it is not explicitly given.
### Miscellaneous
* The indentation handling in the pretty printer has been changed (this is only relevant if you
extend the pretty printer). Previously indentation was automatic, and parts were excluded using
`pNoindent()`. Now no-indent is the default and newlines that require indentation should use
`$this->nl`.
### Removed functionality
* Removed `type` subnode on `Class_`, `ClassMethod` and `Property` nodes. Use `flags` instead.
* The `ClassConst::isStatic()` method has been removed. Constants cannot have a static modifier.
* The `NodeTraverser` no longer accepts `false` as a return value from a `leaveNode()` method.
`NodeTraverser::REMOVE_NODE` should be returned instead.
* The `Node::setLine()` method has been removed. If you really need to, you can use `setAttribute()`
instead.
* The misspelled `Class_::VISIBILITY_MODIFER_MASK` constant has been dropped in favor of
`Class_::VISIBILITY_MODIFIER_MASK`.
* The XML serializer has been removed. As such, the classes `Serializer\XML`, and
`Unserializer\XML`, as well as the interfaces `Serializer` and `Unserializer` no longer exist.
* The `BuilderAbstract` class has been removed. It's functionality is moved into `BuilderHelpers`.
However, this is an internal class and should not be used directly.
* The `Autoloader` class has been removed in favor of relying on the Composer autoloader.

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#!/usr/bin/env php
<?php
foreach ([__DIR__ . '/../../../autoload.php', __DIR__ . '/../vendor/autoload.php'] as $file) {
if (file_exists($file)) {
require $file;
break;
}
}
ini_set('xdebug.max_nesting_level', 3000);
// Disable XDebug var_dump() output truncation
ini_set('xdebug.var_display_max_children', -1);
ini_set('xdebug.var_display_max_data', -1);
ini_set('xdebug.var_display_max_depth', -1);
list($operations, $files, $attributes) = parseArgs($argv);
/* Dump nodes by default */
if (empty($operations)) {
$operations[] = 'dump';
}
if (empty($files)) {
showHelp("Must specify at least one file.");
}
$lexer = new PhpParser\Lexer\Emulative(['usedAttributes' => [
'startLine', 'endLine', 'startFilePos', 'endFilePos', 'comments'
]]);
$parser = (new PhpParser\ParserFactory)->create(
PhpParser\ParserFactory::PREFER_PHP7,
$lexer
);
$dumper = new PhpParser\NodeDumper([
'dumpComments' => true,
'dumpPositions' => $attributes['with-positions'],
]);
$prettyPrinter = new PhpParser\PrettyPrinter\Standard;
$traverser = new PhpParser\NodeTraverser();
$traverser->addVisitor(new PhpParser\NodeVisitor\NameResolver);
foreach ($files as $file) {
if (strpos($file, '<?php') === 0) {
$code = $file;
echo "====> Code $code\n";
} else {
if (!file_exists($file)) {
die("File $file does not exist.\n");
}
$code = file_get_contents($file);
echo "====> File $file:\n";
}
if ($attributes['with-recovery']) {
$errorHandler = new PhpParser\ErrorHandler\Collecting;
$stmts = $parser->parse($code, $errorHandler);
foreach ($errorHandler->getErrors() as $error) {
$message = formatErrorMessage($error, $code, $attributes['with-column-info']);
echo $message . "\n";
}
if (null === $stmts) {
continue;
}
} else {
try {
$stmts = $parser->parse($code);
} catch (PhpParser\Error $error) {
$message = formatErrorMessage($error, $code, $attributes['with-column-info']);
die($message . "\n");
}
}
foreach ($operations as $operation) {
if ('dump' === $operation) {
echo "==> Node dump:\n";
echo $dumper->dump($stmts, $code), "\n";
} elseif ('pretty-print' === $operation) {
echo "==> Pretty print:\n";
echo $prettyPrinter->prettyPrintFile($stmts), "\n";
} elseif ('json-dump' === $operation) {
echo "==> JSON dump:\n";
echo json_encode($stmts, JSON_PRETTY_PRINT), "\n";
} elseif ('var-dump' === $operation) {
echo "==> var_dump():\n";
var_dump($stmts);
} elseif ('resolve-names' === $operation) {
echo "==> Resolved names.\n";
$stmts = $traverser->traverse($stmts);
}
}
}
function formatErrorMessage(PhpParser\Error $e, $code, $withColumnInfo) {
if ($withColumnInfo && $e->hasColumnInfo()) {
return $e->getMessageWithColumnInfo($code);
} else {
return $e->getMessage();
}
}
function showHelp($error = '') {
if ($error) {
echo $error . "\n\n";
}
die(<<<OUTPUT
Usage: php-parse [operations] file1.php [file2.php ...]
or: php-parse [operations] "<?php code"
Turn PHP source code into an abstract syntax tree.
Operations is a list of the following options (--dump by default):
-d, --dump Dump nodes using NodeDumper
-p, --pretty-print Pretty print file using PrettyPrinter\Standard
-j, --json-dump Print json_encode() result
--var-dump var_dump() nodes (for exact structure)
-N, --resolve-names Resolve names using NodeVisitor\NameResolver
-c, --with-column-info Show column-numbers for errors (if available)
-P, --with-positions Show positions in node dumps
-r, --with-recovery Use parsing with error recovery
-h, --help Display this page
Example:
php-parse -d -p -N -d file.php
Dumps nodes, pretty prints them, then resolves names and dumps them again.
OUTPUT
);
}
function parseArgs($args) {
$operations = [];
$files = [];
$attributes = [
'with-column-info' => false,
'with-positions' => false,
'with-recovery' => false,
];
array_shift($args);
$parseOptions = true;
foreach ($args as $arg) {
if (!$parseOptions) {
$files[] = $arg;
continue;
}
switch ($arg) {
case '--dump':
case '-d':
$operations[] = 'dump';
break;
case '--pretty-print':
case '-p':
$operations[] = 'pretty-print';
break;
case '--json-dump':
case '-j':
$operations[] = 'json-dump';
break;
case '--var-dump':
$operations[] = 'var-dump';
break;
case '--resolve-names':
case '-N';
$operations[] = 'resolve-names';
break;
case '--with-column-info':
case '-c';
$attributes['with-column-info'] = true;
break;
case '--with-positions':
case '-P':
$attributes['with-positions'] = true;
break;
case '--with-recovery':
case '-r':
$attributes['with-recovery'] = true;
break;
case '--help':
case '-h';
showHelp();
break;
case '--':
$parseOptions = false;
break;
default:
if ($arg[0] === '-') {
showHelp("Invalid operation $arg.");
} else {
$files[] = $arg;
}
}
}
return [$operations, $files, $attributes];
}

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{
"name": "nikic/php-parser",
"type": "library",
"description": "A PHP parser written in PHP",
"keywords": [
"php",
"parser"
],
"license": "BSD-3-Clause",
"authors": [
{
"name": "Nikita Popov"
}
],
"require": {
"php": ">=7.0",
"ext-tokenizer": "*"
},
"require-dev": {
"phpunit/phpunit": "^6.5 || ^7.0"
},
"extra": {
"branch-alias": {
"dev-master": "4.2-dev"
}
},
"autoload": {
"psr-4": {
"PhpParser\\": "lib/PhpParser"
}
},
"autoload-dev": {
"psr-4": {
"PhpParser\\": "test/PhpParser/"
}
},
"bin": [
"bin/php-parse"
]
}

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Introduction
============
This project is a PHP 5.2 to PHP 7.3 parser **written in PHP itself**.
What is this for?
-----------------
A parser is useful for [static analysis][0], manipulation of code and basically any other
application dealing with code programmatically. A parser constructs an [Abstract Syntax Tree][1]
(AST) of the code and thus allows dealing with it in an abstract and robust way.
There are other ways of processing source code. One that PHP supports natively is using the
token stream generated by [`token_get_all`][2]. The token stream is much more low level than
the AST and thus has different applications: It allows to also analyze the exact formatting of
a file. On the other hand the token stream is much harder to deal with for more complex analysis.
For example, an AST abstracts away the fact that, in PHP, variables can be written as `$foo`, but also
as `$$bar`, `${'foobar'}` or even `${!${''}=barfoo()}`. You don't have to worry about recognizing
all the different syntaxes from a stream of tokens.
Another question is: Why would I want to have a PHP parser *written in PHP*? Well, PHP might not be
a language especially suited for fast parsing, but processing the AST is much easier in PHP than it
would be in other, faster languages like C. Furthermore the people most probably wanting to do
programmatic PHP code analysis are incidentally PHP developers, not C developers.
What can it parse?
------------------
The parser supports parsing PHP 5.2-7.3.
As the parser is based on the tokens returned by `token_get_all` (which is only able to lex the PHP
version it runs on), additionally a wrapper for emulating tokens from newer versions is provided.
This allows to parse PHP 7.3 source code running on PHP 7.0, for example. This emulation is somewhat
hacky and not perfect, but it should work well on any sane code.
What output does it produce?
----------------------------
The parser produces an [Abstract Syntax Tree][1] (AST) also known as a node tree. How this looks
can best be seen in an example. The program `<?php echo 'Hi', 'World';` will give you a node tree
roughly looking like this:
```
array(
0: Stmt_Echo(
exprs: array(
0: Scalar_String(
value: Hi
)
1: Scalar_String(
value: World
)
)
)
)
```
This matches the structure of the code: An echo statement, which takes two strings as expressions,
with the values `Hi` and `World!`.
You can also see that the AST does not contain any whitespace information (but most comments are saved).
So using it for formatting analysis is not possible.
What else can it do?
--------------------
Apart from the parser itself this package also bundles support for some other, related features:
* Support for pretty printing, which is the act of converting an AST into PHP code. Please note
that "pretty printing" does not imply that the output is especially pretty. It's just how it's
called ;)
* Support for serializing and unserializing the node tree to JSON
* Support for dumping the node tree in a human readable form (see the section above for an
example of how the output looks like)
* Infrastructure for traversing and changing the AST (node traverser and node visitors)
* A node visitor for resolving namespaced names
[0]: http://en.wikipedia.org/wiki/Static_program_analysis
[1]: http://en.wikipedia.org/wiki/Abstract_syntax_tree
[2]: http://php.net/token_get_all

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Usage of basic components
=========================
This document explains how to use the parser, the pretty printer and the node traverser.
Bootstrapping
-------------
To bootstrap the library, include the autoloader generated by composer:
```php
require 'path/to/vendor/autoload.php';
```
Additionally you may want to set the `xdebug.max_nesting_level` ini option to a higher value:
```php
ini_set('xdebug.max_nesting_level', 3000);
```
This ensures that there will be no errors when traversing highly nested node trees. However, it is
preferable to disable XDebug completely, as it can easily make this library more than five times
slower.
Parsing
-------
In order to parse code, you first have to create a parser instance:
```php
use PhpParser\ParserFactory;
$parser = (new ParserFactory)->create(ParserFactory::PREFER_PHP7);
```
The factory accepts a kind argument, that determines how different PHP versions are treated:
Kind | Behavior
-----|---------
`ParserFactory::PREFER_PHP7` | Try to parse code as PHP 7. If this fails, try to parse it as PHP 5.
`ParserFactory::PREFER_PHP5` | Try to parse code as PHP 5. If this fails, try to parse it as PHP 7.
`ParserFactory::ONLY_PHP7` | Parse code as PHP 7.
`ParserFactory::ONLY_PHP5` | Parse code as PHP 5.
Unless you have a strong reason to use something else, `PREFER_PHP7` is a reasonable default.
The `create()` method optionally accepts a `Lexer` instance as the second argument. Some use cases
that require customized lexers are discussed in the [lexer documentation](component/Lexer.markdown).
Subsequently you can pass PHP code (including the opening `<?php` tag) to the `parse` method in order to
create a syntax tree. If a syntax error is encountered, an `PhpParser\Error` exception will be thrown:
```php
<?php
use PhpParser\Error;
use PhpParser\ParserFactory;
$code = <<<'CODE'
<?php
function printLine($msg) {
echo $msg, "\n";
}
printLine('Hello World!!!');
CODE;
$parser = (new ParserFactory)->create(ParserFactory::PREFER_PHP7);
try {
$stmts = $parser->parse($code);
// $stmts is an array of statement nodes
} catch (Error $e) {
echo 'Parse Error: ', $e->getMessage();
}
```
A parser instance can be reused to parse multiple files.
Node dumping
------------
To dump the abstact syntax tree in human readable form, a `NodeDumper` can be used:
```php
<?php
use PhpParser\NodeDumper;
$nodeDumper = new NodeDumper;
echo $nodeDumper->dump($stmts), "\n";
```
For the sample code from the previous section, this will produce the following output:
```
array(
0: Stmt_Function(
byRef: false
name: Identifier(
name: printLine
)
params: array(
0: Param(
type: null
byRef: false
variadic: false
var: Expr_Variable(
name: msg
)
default: null
)
)
returnType: null
stmts: array(
0: Stmt_Echo(
exprs: array(
0: Expr_Variable(
name: msg
)
1: Scalar_String(
value:
)
)
)
)
)
1: Stmt_Expression(
expr: Expr_FuncCall(
name: Name(
parts: array(
0: printLine
)
)
args: array(
0: Arg(
value: Scalar_String(
value: Hello World!!!
)
byRef: false
unpack: false
)
)
)
)
)
```
You can also use the `php-parse` script to obtain such a node dump by calling it either with a file
name or code string:
```sh
vendor/bin/php-parse file.php
vendor/bin/php-parse "<?php foo();"
```
This can be very helpful if you want to quickly check how certain syntax is represented in the AST.
Node tree structure
-------------------
Looking at the node dump above, you can see that `$stmts` for this example code is an array of two
nodes, a `Stmt_Function` and a `Stmt_Expression`. The corresponding class names are:
* `Stmt_Function -> PhpParser\Node\Stmt\Function_`
* `Stmt_Expression -> PhpParser\Node\Stmt\Expression`
The additional `_` at the end of the first class name is necessary, because `Function` is a
reserved keyword. Many node class names in this library have a trailing `_` to avoid clashing with
a keyword.
As PHP is a large language there are approximately 140 different nodes. In order to make working
with them easier they are grouped into three categories:
* `PhpParser\Node\Stmt`s are statement nodes, i.e. language constructs that do not return
a value and can not occur in an expression. For example a class definition is a statement.
It doesn't return a value and you can't write something like `func(class A {});`.
* `PhpParser\Node\Expr`s are expression nodes, i.e. language constructs that return a value
and thus can occur in other expressions. Examples of expressions are `$var`
(`PhpParser\Node\Expr\Variable`) and `func()` (`PhpParser\Node\Expr\FuncCall`).
* `PhpParser\Node\Scalar`s are nodes representing scalar values, like `'string'`
(`PhpParser\Node\Scalar\String_`), `0` (`PhpParser\Node\Scalar\LNumber`) or magic constants
like `__FILE__` (`PhpParser\Node\Scalar\MagicConst\File`). All `PhpParser\Node\Scalar`s extend
`PhpParser\Node\Expr`, as scalars are expressions, too.
* There are some nodes not in either of these groups, for example names (`PhpParser\Node\Name`)
and call arguments (`PhpParser\Node\Arg`).
The `Node\Stmt\Expression` node is somewhat confusing in that it contains both the terms "statement"
and "expression". This node distinguishes `expr`, which is a `Node\Expr`, from `expr;`, which is
an "expression statement" represented by `Node\Stmt\Expression` and containing `expr` as a sub-node.
Every node has a (possibly zero) number of subnodes. You can access subnodes by writing
`$node->subNodeName`. The `Stmt\Echo_` node has only one subnode `exprs`. So in order to access it
in the above example you would write `$stmts[0]->exprs`. If you wanted to access the name of the function
call, you would write `$stmts[0]->exprs[1]->name`.
All nodes also define a `getType()` method that returns the node type. The type is the class name
without the `PhpParser\Node\` prefix and `\` replaced with `_`. It also does not contain a trailing
`_` for reserved-keyword class names.
It is possible to associate custom metadata with a node using the `setAttribute()` method. This data
can then be retrieved using `hasAttribute()`, `getAttribute()` and `getAttributes()`.
By default the lexer adds the `startLine`, `endLine` and `comments` attributes. `comments` is an array
of `PhpParser\Comment[\Doc]` instances.
The start line can also be accessed using `getLine()`/`setLine()` (instead of `getAttribute('startLine')`).
The last doc comment from the `comments` attribute can be obtained using `getDocComment()`.
Pretty printer
--------------
The pretty printer component compiles the AST back to PHP code. As the parser does not retain formatting
information the formatting is done using a specified scheme. Currently there is only one scheme available,
namely `PhpParser\PrettyPrinter\Standard`.
```php
use PhpParser\Error;
use PhpParser\ParserFactory;
use PhpParser\PrettyPrinter;
$code = "<?php echo 'Hi ', hi\\getTarget();";
$parser = (new ParserFactory)->create(ParserFactory::PREFER_PHP7);
$prettyPrinter = new PrettyPrinter\Standard;
try {
// parse
$stmts = $parser->parse($code);
// change
$stmts[0] // the echo statement
->exprs // sub expressions
[0] // the first of them (the string node)
->value // it's value, i.e. 'Hi '
= 'Hello '; // change to 'Hello '
// pretty print
$code = $prettyPrinter->prettyPrint($stmts);
echo $code;
} catch (Error $e) {
echo 'Parse Error: ', $e->getMessage();
}
```
The above code will output:
echo 'Hello ', hi\getTarget();
As you can see the source code was first parsed using `PhpParser\Parser->parse()`, then changed and then
again converted to code using `PhpParser\PrettyPrinter\Standard->prettyPrint()`.
The `prettyPrint()` method pretty prints a statements array. It is also possible to pretty print only a
single expression using `prettyPrintExpr()`.
The `prettyPrintFile()` method can be used to print an entire file. This will include the opening `<?php` tag
and handle inline HTML as the first/last statement more gracefully.
> Read more: [Pretty printing documentation](component/Pretty_printing.markdown)
Node traversation
-----------------
The above pretty printing example used the fact that the source code was known and thus it was easy to
write code that accesses a certain part of a node tree and changes it. Normally this is not the case.
Usually you want to change / analyze code in a generic way, where you don't know how the node tree is
going to look like.
For this purpose the parser provides a component for traversing and visiting the node tree. The basic
structure of a program using this `PhpParser\NodeTraverser` looks like this:
```php
use PhpParser\NodeTraverser;
use PhpParser\ParserFactory;
use PhpParser\PrettyPrinter;
$parser = (new ParserFactory)->create(ParserFactory::PREFER_PHP7);
$traverser = new NodeTraverser;
$prettyPrinter = new PrettyPrinter\Standard;
// add your visitor
$traverser->addVisitor(new MyNodeVisitor);
try {
$code = file_get_contents($fileName);
// parse
$stmts = $parser->parse($code);
// traverse
$stmts = $traverser->traverse($stmts);
// pretty print
$code = $prettyPrinter->prettyPrintFile($stmts);
echo $code;
} catch (PhpParser\Error $e) {
echo 'Parse Error: ', $e->getMessage();
}
```
The corresponding node visitor might look like this:
```php
use PhpParser\Node;
use PhpParser\NodeVisitorAbstract;
class MyNodeVisitor extends NodeVisitorAbstract
{
public function leaveNode(Node $node) {
if ($node instanceof Node\Scalar\String_) {
$node->value = 'foo';
}
}
}
```
The above node visitor would change all string literals in the program to `'foo'`.
All visitors must implement the `PhpParser\NodeVisitor` interface, which defines the following four
methods:
```php
public function beforeTraverse(array $nodes);
public function enterNode(\PhpParser\Node $node);
public function leaveNode(\PhpParser\Node $node);
public function afterTraverse(array $nodes);
```
The `beforeTraverse()` method is called once before the traversal begins and is passed the nodes the
traverser was called with. This method can be used for resetting values before traversation or
preparing the tree for traversal.
The `afterTraverse()` method is similar to the `beforeTraverse()` method, with the only difference that
it is called once after the traversal.
The `enterNode()` and `leaveNode()` methods are called on every node, the former when it is entered,
i.e. before its subnodes are traversed, the latter when it is left.
All four methods can either return the changed node or not return at all (i.e. `null`) in which
case the current node is not changed.
The `enterNode()` method can additionally return the value `NodeTraverser::DONT_TRAVERSE_CHILDREN`,
which instructs the traverser to skip all children of the current node. To furthermore prevent subsequent
visitors from visiting the current node, `NodeTraverser::DONT_TRAVERSE_CURRENT_AND_CHILDREN` can be used instead.
The `leaveNode()` method can additionally return the value `NodeTraverser::REMOVE_NODE`, in which
case the current node will be removed from the parent array. Furthermore it is possible to return
an array of nodes, which will be merged into the parent array at the offset of the current node.
I.e. if in `array(A, B, C)` the node `B` should be replaced with `array(X, Y, Z)` the result will
be `array(A, X, Y, Z, C)`.
Instead of manually implementing the `NodeVisitor` interface you can also extend the `NodeVisitorAbstract`
class, which will define empty default implementations for all the above methods.
> Read more: [Walking the AST](component/Walking_the_AST.markdown)
The NameResolver node visitor
-----------------------------
One visitor that is already bundled with the package is `PhpParser\NodeVisitor\NameResolver`. This visitor
helps you work with namespaced code by trying to resolve most names to fully qualified ones.
For example, consider the following code:
use A as B;
new B\C();
In order to know that `B\C` really is `A\C` you would need to track aliases and namespaces yourself.
The `NameResolver` takes care of that and resolves names as far as possible.
After running it, most names will be fully qualified. The only names that will stay unqualified are
unqualified function and constant names. These are resolved at runtime and thus the visitor can't
know which function they are referring to. In most cases this is a non-issue as the global functions
are meant.
Also the `NameResolver` adds a `namespacedName` subnode to class, function and constant declarations
that contains the namespaced name instead of only the shortname that is available via `name`.
> Read more: [Name resolution documentation](component/Name_resolution.markdown)
Example: Converting namespaced code to pseudo namespaces
--------------------------------------------------------
A small example to understand the concept: We want to convert namespaced code to pseudo namespaces
so it works on 5.2, i.e. names like `A\\B` should be converted to `A_B`. Note that such conversions
are fairly complicated if you take PHP's dynamic features into account, so our conversion will
assume that no dynamic features are used.
We start off with the following base code:
```php
use PhpParser\ParserFactory;
use PhpParser\PrettyPrinter;
use PhpParser\NodeTraverser;
use PhpParser\NodeVisitor\NameResolver;
$inDir = '/some/path';
$outDir = '/some/other/path';
$parser = (new ParserFactory)->create(ParserFactory::PREFER_PHP7);
$traverser = new NodeTraverser;
$prettyPrinter = new PrettyPrinter\Standard;
$traverser->addVisitor(new NameResolver); // we will need resolved names
$traverser->addVisitor(new NamespaceConverter); // our own node visitor
// iterate over all .php files in the directory
$files = new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($inDir));
$files = new \RegexIterator($files, '/\.php$/');
foreach ($files as $file) {
try {
// read the file that should be converted
$code = file_get_contents($file->getPathName());
// parse
$stmts = $parser->parse($code);
// traverse
$stmts = $traverser->traverse($stmts);
// pretty print
$code = $prettyPrinter->prettyPrintFile($stmts);
// write the converted file to the target directory
file_put_contents(
substr_replace($file->getPathname(), $outDir, 0, strlen($inDir)),
$code
);
} catch (PhpParser\Error $e) {
echo 'Parse Error: ', $e->getMessage();
}
}
```
Now lets start with the main code, the `NodeVisitor\NamespaceConverter`. One thing it needs to do
is convert `A\\B` style names to `A_B` style ones.
```php
use PhpParser\Node;
class NamespaceConverter extends \PhpParser\NodeVisitorAbstract
{
public function leaveNode(Node $node) {
if ($node instanceof Node\Name) {
return new Node\Name(str_replace('\\', '_', $node->toString()));
}
}
}
```
The above code profits from the fact that the `NameResolver` already resolved all names as far as
possible, so we don't need to do that. We only need to create a string with the name parts separated
by underscores instead of backslashes. This is what `str_replace('\\', '_', $node->toString())` does. (If you want to
create a name with backslashes either write `$node->toString()` or `(string) $node`.) Then we create
a new name from the string and return it. Returning a new node replaces the old node.
Another thing we need to do is change the class/function/const declarations. Currently they contain
only the shortname (i.e. the last part of the name), but they need to contain the complete name including
the namespace prefix:
```php
use PhpParser\Node;
use PhpParser\Node\Stmt;
class NodeVisitor_NamespaceConverter extends \PhpParser\NodeVisitorAbstract
{
public function leaveNode(Node $node) {
if ($node instanceof Node\Name) {
return new Node\Name(str_replace('\\', '_', $node->toString()));
} elseif ($node instanceof Stmt\Class_
|| $node instanceof Stmt\Interface_
|| $node instanceof Stmt\Function_) {
$node->name = str_replace('\\', '_', $node->namespacedName->toString());
} elseif ($node instanceof Stmt\Const_) {
foreach ($node->consts as $const) {
$const->name = str_replace('\\', '_', $const->namespacedName->toString());
}
}
}
}
```
There is not much more to it than converting the namespaced name to string with `_` as separator.
The last thing we need to do is remove the `namespace` and `use` statements:
```php
use PhpParser\Node;
use PhpParser\Node\Stmt;
use PhpParser\NodeTraverser;
class NodeVisitor_NamespaceConverter extends \PhpParser\NodeVisitorAbstract
{
public function leaveNode(Node $node) {
if ($node instanceof Node\Name) {
return new Node\Name(str_replace('\\', '_', $node->toString()));
} elseif ($node instanceof Stmt\Class_
|| $node instanceof Stmt\Interface_
|| $node instanceof Stmt\Function_) {
$node->name = str_replace('\\', '_', $node->namespacedName->toString();
} elseif ($node instanceof Stmt\Const_) {
foreach ($node->consts as $const) {
$const->name = str_replace('\\', '_', $const->namespacedName->toString());
}
} elseif ($node instanceof Stmt\Namespace_) {
// returning an array merges is into the parent array
return $node->stmts;
} elseif ($node instanceof Stmt\Use_) {
// remove use nodes altogether
return NodeTraverser::REMOVE_NODE;
}
}
}
```
That's all.

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Table of Contents
=================
Guide
-----
1. [Introduction](0_Introduction.markdown)
2. [Usage of basic components](2_Usage_of_basic_components.markdown)
Component documentation
-----------------------
* [Walking the AST](component/Walking_the_AST.markdown)
* Node visitors
* Modifying the AST from a visitor
* Short-circuiting traversals
* Interleaved visitors
* Simple node finding API
* Parent and sibling references
* [Name resolution](component/Name_resolution.markdown)
* Name resolver options
* Name resolution context
* [Pretty printing](component/Pretty_printing.markdown)
* Converting AST back to PHP code
* Customizing formatting
* Formatting-preserving code transformations
* [AST builders](component/AST_builders.markdown)
* Fluent builders for AST nodes
* [Lexer](component/Lexer.markdown)
* Lexer options
* Token and file positions for nodes
* Custom attributes
* [Error handling](component/Error_handling.markdown)
* Column information for errors
* Error recovery (parsing of syntactically incorrect code)
* [Constant expression evaluation](component/Constant_expression_evaluation.markdown)
* Evaluating constant/property/etc initializers
* Handling errors and unsupported expressions
* [JSON representation](component/JSON_representation.markdown)
* JSON encoding and decoding of ASTs
* [Performance](component/Performance.markdown)
* Disabling XDebug
* Reusing objects
* Garbage collection impact
* [Frequently asked questions](component/FAQ.markdown)
* Parent and sibling references

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AST builders
============
When PHP-Parser is used to generate (or modify) code by first creating an Abstract Syntax Tree and
then using the [pretty printer](Pretty_printing.markdown) to convert it to PHP code, it can often
be tedious to manually construct AST nodes. The project provides a number of utilities to simplify
the construction of common AST nodes.
Fluent builders
---------------
The library comes with a number of builders, which allow creating node trees using a fluent
interface. Builders are created using the `BuilderFactory` and the final constructed node is
accessed through `getNode()`. Fluent builders are available for
the following syntactic elements:
* namespaces and use statements
* classes, interfaces and traits
* methods, functions and parameters
* properties
Here is an example:
```php
use PhpParser\BuilderFactory;
use PhpParser\PrettyPrinter;
use PhpParser\Node;
$factory = new BuilderFactory;
$node = $factory->namespace('Name\Space')
->addStmt($factory->use('Some\Other\Thingy')->as('SomeClass'))
->addStmt($factory->useFunction('strlen'))
->addStmt($factory->useConst('PHP_VERSION'))
->addStmt($factory->class('SomeOtherClass')
->extend('SomeClass')
->implement('A\Few', '\Interfaces')
->makeAbstract() // ->makeFinal()
->addStmt($factory->useTrait('FirstTrait'))
->addStmt($factory->useTrait('SecondTrait', 'ThirdTrait')
->and('AnotherTrait')
->with($factory->traitUseAdaptation('foo')->as('bar'))
->with($factory->traitUseAdaptation('AnotherTrait', 'baz')->as('test'))
->with($factory->traitUseAdaptation('AnotherTrait', 'func')->insteadof('SecondTrait')))
->addStmt($factory->method('someMethod')
->makePublic()
->makeAbstract() // ->makeFinal()
->setReturnType('bool') // ->makeReturnByRef()
->addParam($factory->param('someParam')->setType('SomeClass'))
->setDocComment('/**
* This method does something.
*
* @param SomeClass And takes a parameter
*/')
)
->addStmt($factory->method('anotherMethod')
->makeProtected() // ->makePublic() [default], ->makePrivate()
->addParam($factory->param('someParam')->setDefault('test'))
// it is possible to add manually created nodes
->addStmt(new Node\Expr\Print_(new Node\Expr\Variable('someParam')))
)
// properties will be correctly reordered above the methods
->addStmt($factory->property('someProperty')->makeProtected())
->addStmt($factory->property('anotherProperty')->makePrivate()->setDefault(array(1, 2, 3)))
)
->getNode()
;
$stmts = array($node);
$prettyPrinter = new PrettyPrinter\Standard();
echo $prettyPrinter->prettyPrintFile($stmts);
```
This will produce the following output with the standard pretty printer:
```php
<?php
namespace Name\Space;
use Some\Other\Thingy as SomeClass;
use function strlen;
use const PHP_VERSION;
abstract class SomeOtherClass extends SomeClass implements A\Few, \Interfaces
{
use FirstTrait;
use SecondTrait, ThirdTrait, AnotherTrait {
foo as bar;
AnotherTrait::baz as test;
AnotherTrait::func insteadof SecondTrait;
}
protected $someProperty;
private $anotherProperty = array(1, 2, 3);
/**
* This method does something.
*
* @param SomeClass And takes a parameter
*/
public abstract function someMethod(SomeClass $someParam) : bool;
protected function anotherMethod($someParam = 'test')
{
print $someParam;
}
}
```
Additional helper methods
-------------------------
The `BuilderFactory` also provides a number of additional helper methods, which directly return
nodes. The following methods are currently available:
* `val($value)`: Creates an AST node for a literal value like `42` or `[1, 2, 3]`.
* `var($name)`: Creates variable node.
* `args(array $args)`: Creates an array of function/method arguments, including the required `Arg`
wrappers. Also converts literals to AST nodes.
* `funcCall($name, array $args = [])`: Create a function call node. Converts `$name` to a `Name`
node and normalizes arguments.
* `methodCall(Expr $var, $name, array $args = [])`: Create a method call node. Converts `$name` to
an `Identifier` node and normalizes arguments.
* `staticCall($class, $name, array $args = [])`: Create a static method call node. Converts
`$class` to a `Name` node, `$name` to an `Identifier` node and normalizes arguments.
* `new($class, array $args = [])`: Create a "new" (object creation) node. Converts `$class` to a
`Name` node.
* `constFetch($name)`: Create a constant fetch node. Converts `$name` to a `Name` node.
* `classConstFetch($class, $name)`: Create a class constant fetch node. Converts `$class` to a
`Name` node and `$name` to an `Identifier` node.
* `propertyFetch($var, $name)`: Creates a property fetch node. Converts `$name` to an `Identifier`
node.
* `concat(...$exprs)`: Create a tree of `BinaryOp\Concat` nodes for the given expressions.
These methods may be expanded on an as-needed basis. Please open an issue or PR if a common
operation is missing.

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Constant expression evaluation
==============================
Initializers for constants, properties, parameters, etc. have limited support for expressions. For
example:
```php
<?php
class Test {
const SECONDS_IN_HOUR = 60 * 60;
const SECONDS_IN_DAY = 24 * self::SECONDS_IN_HOUR;
}
```
PHP-Parser supports evaluation of such constant expressions through the `ConstExprEvaluator` class:
```php
<?php
use PhpParser\{ConstExprEvaluator, ConstExprEvaluationException};
$evalutator = new ConstExprEvaluator();
try {
$value = $evalutator->evaluateSilently($someExpr);
} catch (ConstExprEvaluationException $e) {
// Either the expression contains unsupported expression types,
// or an error occurred during evaluation
}
```
Error handling
--------------
The constant evaluator provides two methods, `evaluateDirectly()` and `evaluateSilently()`, which
differ in error behavior. `evaluateDirectly()` will evaluate the expression as PHP would, including
any generated warnings or Errors. `evaluateSilently()` will instead convert warnings and Errors into
a `ConstExprEvaluationException`. For example:
```php
<?php
use PhpParser\{ConstExprEvaluator, ConstExprEvaluationException};
use PhpParser\Node\{Expr, Scalar};
$evaluator = new ConstExprEvaluator();
// 10 / 0
$expr = new Expr\BinaryOp\Div(new Scalar\LNumber(10), new Scalar\LNumber(0));
var_dump($evaluator->evaluateDirectly($expr)); // float(INF)
// Warning: Division by zero
try {
$evaluator->evaluateSilently($expr);
} catch (ConstExprEvaluationException $e) {
var_dump($e->getPrevious()->getMessage()); // Division by zero
}
```
For the purposes of static analysis, you will likely want to use `evaluateSilently()` and leave
erroring expressions unevaluated.
Unsupported expressions and evaluator fallback
----------------------------------------------
The constant expression evaluator supports all expression types that are permitted in constant
expressions, apart from the following:
* `Scalar\MagicConst\*`
* `Expr\ConstFetch` (only null/false/true are handled)
* `Expr\ClassConstFetch`
Handling these expression types requires non-local information, such as which global constants are
defined. By default, the evaluator will throw a `ConstExprEvaluationException` when it encounters
an unsupported expression type.
It is possible to override this behavior and support resolution for these expression types by
specifying an evaluation fallback function:
```php
<?php
use PhpParser\{ConstExprEvaluator, ConstExprEvaluationException};
use PhpParser\Node\Expr;
$evalutator = new ConstExprEvaluator(function(Expr $expr) {
if ($expr instanceof Expr\ConstFetch) {
return fetchConstantSomehow($expr);
}
if ($expr instanceof Expr\ClassConstFetch) {
return fetchClassConstantSomehow($expr);
}
// etc.
throw new ConstExprEvaluationException(
"Expression of type {$expr->getType()} cannot be evaluated");
});
try {
$evalutator->evaluateSilently($someExpr);
} catch (ConstExprEvaluationException $e) {
// Handle exception
}
```
Implementers are advised to ensure that evaluation of indirect constant references cannot lead to
infinite recursion. For example, the following code could lead to infinite recursion if constant
lookup is implemented naively.
```php
<?php
class Test {
const A = self::B;
const B = self::A;
}
```

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Error handling
==============
Errors during parsing or analysis are represented using the `PhpParser\Error` exception class. In addition to an error
message, an error can also store additional information about the location the error occurred at.
How much location information is available depends on the origin of the error and how many lexer attributes have been
enabled. At a minimum the start line of the error is usually available.
Column information
------------------
In order to receive information about not only the line, but also the column span an error occurred at, the file
position attributes in the lexer need to be enabled:
```php
$lexer = new PhpParser\Lexer(array(
'usedAttributes' => array('comments', 'startLine', 'endLine', 'startFilePos', 'endFilePos'),
));
$parser = (new PhpParser\ParserFactory)->create(PhpParser\ParserFactory::PREFER_PHP7, $lexer);
try {
$stmts = $parser->parse($code);
// ...
} catch (PhpParser\Error $e) {
// ...
}
```
Before using column information, its availability needs to be checked with `$e->hasColumnInfo()`, as the precise
location of an error cannot always be determined. The methods for retrieving column information also have to be passed
the source code of the parsed file. An example for printing an error:
```php
if ($e->hasColumnInfo()) {
echo $e->getRawMessage() . ' from ' . $e->getStartLine() . ':' . $e->getStartColumn($code)
. ' to ' . $e->getEndLine() . ':' . $e->getEndColumn($code);
// or:
echo $e->getMessageWithColumnInfo();
} else {
echo $e->getMessage();
}
```
Both line numbers and column numbers are 1-based. EOF errors will be located at the position one past the end of the
file.
Error recovery
--------------
The error behavior of the parser (and other components) is controlled by an `ErrorHandler`. Whenever an error is
encountered, `ErrorHandler::handleError()` is invoked. The default error handling strategy is `ErrorHandler\Throwing`,
which will immediately throw when an error is encountered.
To instead collect all encountered errors into an array, while trying to continue parsing the rest of the source code,
an instance of `ErrorHandler\Collecting` can be passed to the `Parser::parse()` method. A usage example:
```php
$parser = (new PhpParser\ParserFactory)->create(PhpParser\ParserFactory::ONLY_PHP7);
$errorHandler = new PhpParser\ErrorHandler\Collecting;
$stmts = $parser->parse($code, $errorHandler);
if ($errorHandler->hasErrors()) {
foreach ($errorHandler->getErrors() as $error) {
// $error is an ordinary PhpParser\Error
}
}
if (null !== $stmts) {
// $stmts is a best-effort partial AST
}
```
The `NameResolver` visitor also accepts an `ErrorHandler` as a constructor argument.

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Frequently Asked Questions
==========================
* [How can the parent of a node be obtained?](#how-can-the-parent-of-a-node-be-obtained)
* [How can the next/previous sibling of a node be obtained?](#how-can-the-nextprevious-sibling-of-a-node-be-obtained)
How can the parent of a node be obtained?
-----
The AST does not store parent nodes by default. However, it is easy to add a custom parent node
attribute using a custom node visitor:
```php
use PhpParser\Node;
use PhpParser\NodeVisitorAbstract;
class ParentConnector extends NodeVisitorAbstract {
private $stack;
public function beforeTraverse(array $nodes) {
$this->stack = [];
}
public function enterNode(Node $node) {
if (!empty($this->stack)) {
$node->setAttribute('parent', $this->stack[count($this->stack)-1]);
}
$this->stack[] = $node;
}
public function leaveNode(Node $node) {
array_pop($this->stack);
}
}
```
After running this visitor, the parent node can be obtained through `$node->getAttribute('parent')`.
How can the next/previous sibling of a node be obtained?
-----
Again, siblings are not stored by default, but the visitor from the previous entry can be easily
extended to store the previous / next node with a common parent as well:
```php
use PhpParser\Node;
use PhpParser\NodeVisitorAbstract;
class NodeConnector extends NodeVisitorAbstract {
private $stack;
private $prev;
public function beforeTraverse(array $nodes) {
$this->stack = [];
$this->prev = null;
}
public function enterNode(Node $node) {
if (!empty($this->stack)) {
$node->setAttribute('parent', $this->stack[count($this->stack)-1]);
}
if ($this->prev && $this->prev->getAttribute('parent') == $node->getAttribute('parent')) {
$node->setAttribute('prev', $this->prev);
$this->prev->setAttribute('next', $node);
}
$this->stack[] = $node;
}
public function leaveNode(Node $node) {
$this->prev = $node;
array_pop($this->stack);
}
}
```

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JSON representation
===================
Nodes (and comments) implement the `JsonSerializable` interface. As such, it is possible to JSON
encode the AST directly using `json_encode()`:
```php
<?php
use PhpParser\ParserFactory;
$code = <<<'CODE'
<?php
/** @param string $msg */
function printLine($msg) {
echo $msg, "\n";
}
CODE;
$parser = (new ParserFactory)->create(ParserFactory::PREFER_PHP7);
try {
$stmts = $parser->parse($code);
echo json_encode($stmts, JSON_PRETTY_PRINT), "\n";
} catch (PhpParser\Error $e) {
echo 'Parse Error: ', $e->getMessage();
}
```
This will result in the following output (which includes attributes):
```json
[
{
"nodeType": "Stmt_Function",
"byRef": false,
"name": {
"nodeType": "Identifier",
"name": "printLine",
"attributes": {
"startLine": 4,
"endLine": 4
}
},
"params": [
{
"nodeType": "Param",
"type": null,
"byRef": false,
"variadic": false,
"var": {
"nodeType": "Expr_Variable",
"name": "msg",
"attributes": {
"startLine": 4,
"endLine": 4
}
},
"default": null,
"attributes": {
"startLine": 4,
"endLine": 4
}
}
],
"returnType": null,
"stmts": [
{
"nodeType": "Stmt_Echo",
"exprs": [
{
"nodeType": "Expr_Variable",
"name": "msg",
"attributes": {
"startLine": 5,
"endLine": 5
}
},
{
"nodeType": "Scalar_String",
"value": "\n",
"attributes": {
"startLine": 5,
"endLine": 5,
"kind": 2
}
}
],
"attributes": {
"startLine": 5,
"endLine": 5
}
}
],
"attributes": {
"startLine": 4,
"comments": [
{
"nodeType": "Comment_Doc",
"text": "\/** @param string $msg *\/",
"line": 3,
"filePos": 9,
"tokenPos": 2
}
],
"endLine": 6
}
}
]
```
The JSON representation may be converted back into an AST using the `JsonDecoder`:
```php
<?php
$jsonDecoder = new PhpParser\JsonDecoder();
$ast = $jsonDecoder->decode($json);
```
Note that not all ASTs can be represented using JSON. In particular:
* JSON only supports UTF-8 strings.
* JSON does not support non-finite floating-point numbers. This can occur if the original source
code contains non-representable floating-pointing literals such as `1e1000`.
If the node tree is not representable in JSON, the initial `json_encode()` call will fail.
From the command line, a JSON dump can be obtained using `vendor/bin/php-parse -j file.php`.

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Lexer component documentation
=============================
The lexer is responsible for providing tokens to the parser. The project comes with two lexers: `PhpParser\Lexer` and
`PhpParser\Lexer\Emulative`. The latter is an extension of the former, which adds the ability to emulate tokens of
newer PHP versions and thus allows parsing of new code on older versions.
This documentation discusses options available for the default lexers and explains how lexers can be extended.
Lexer options
-------------
The two default lexers accept an `$options` array in the constructor. Currently only the `'usedAttributes'` option is
supported, which allows you to specify which attributes will be added to the AST nodes. The attributes can then be
accessed using `$node->getAttribute()`, `$node->setAttribute()`, `$node->hasAttribute()` and `$node->getAttributes()`
methods. A sample options array:
```php
$lexer = new PhpParser\Lexer(array(
'usedAttributes' => array(
'comments', 'startLine', 'endLine'
)
));
```
The attributes used in this example match the default behavior of the lexer. The following attributes are supported:
* `comments`: Array of `PhpParser\Comment` or `PhpParser\Comment\Doc` instances, representing all comments that occurred
between the previous non-discarded token and the current one. Use of this attribute is required for the
`$node->getComments()` and `$node->getDocComment()` methods to work. The attribute is also needed if you wish the pretty
printer to retain comments present in the original code.
* `startLine`: Line in which the node starts. This attribute is required for the `$node->getLine()` to work. It is also
required if syntax errors should contain line number information.
* `endLine`: Line in which the node ends. Required for `$node->getEndLine()`.
* `startTokenPos`: Offset into the token array of the first token in the node. Required for `$node->getStartTokenPos()`.
* `endTokenPos`: Offset into the token array of the last token in the node. Required for `$node->getEndTokenPos()`.
* `startFilePos`: Offset into the code string of the first character that is part of the node. Required for `$node->getStartFilePos()`.
* `endFilePos`: Offset into the code string of the last character that is part of the node. Required for `$node->getEndFilePos()`.
### Using token positions
> **Note:** The example in this section is outdated in that this information is directly available in the AST: While
> `$property->isPublic()` does not distinguish between `public` and `var`, directly checking `$property->flags` for
> the `$property->flags & Class_::VISIBILITY_MODIFIER_MASK) === 0` allows making this distinction without resorting to
> tokens. However the general idea behind the example still applies in other cases.
The token offset information is useful if you wish to examine the exact formatting used for a node. For example the AST
does not distinguish whether a property was declared using `public` or using `var`, but you can retrieve this
information based on the token position:
```php
function isDeclaredUsingVar(array $tokens, PhpParser\Node\Stmt\Property $prop) {
$i = $prop->getAttribute('startTokenPos');
return $tokens[$i][0] === T_VAR;
}
```
In order to make use of this function, you will have to provide the tokens from the lexer to your node visitor using
code similar to the following:
```php
class MyNodeVisitor extends PhpParser\NodeVisitorAbstract {
private $tokens;
public function setTokens(array $tokens) {
$this->tokens = $tokens;
}
public function leaveNode(PhpParser\Node $node) {
if ($node instanceof PhpParser\Node\Stmt\Property) {
var_dump(isDeclaredUsingVar($this->tokens, $node));
}
}
}
$lexer = new PhpParser\Lexer(array(
'usedAttributes' => array(
'comments', 'startLine', 'endLine', 'startTokenPos', 'endTokenPos'
)
));
$parser = (new PhpParser\ParserFactory)->create(PhpParser\ParserFactory::ONLY_PHP7, $lexer);
$visitor = new MyNodeVisitor();
$traverser = new PhpParser\NodeTraverser();
$traverser->addVisitor($visitor);
try {
$stmts = $parser->parse($code);
$visitor->setTokens($lexer->getTokens());
$stmts = $traverser->traverse($stmts);
} catch (PhpParser\Error $e) {
echo 'Parse Error: ', $e->getMessage();
}
```
The same approach can also be used to perform specific modifications in the code, without changing the formatting in
other places (which is the case when using the pretty printer).
Lexer extension
---------------
A lexer has to define the following public interface:
```php
function startLexing(string $code, ErrorHandler $errorHandler = null): void;
function getTokens(): array;
function handleHaltCompiler(): string;
function getNextToken(string &$value = null, array &$startAttributes = null, array &$endAttributes = null): int;
```
The `startLexing()` method is invoked whenever the `parse()` method of the parser is called and is passed the source
code that is to be lexed (including the opening tag). It can be used to reset state or preprocess the source code or tokens. The
passed `ErrorHandler` should be used to report lexing errors.
The `getTokens()` method returns the current token array, in the usual `token_get_all()` format. This method is not
used by the parser (which uses `getNextToken()`), but is useful in combination with the token position attributes.
The `handleHaltCompiler()` method is called whenever a `T_HALT_COMPILER` token is encountered. It has to return the
remaining string after the construct (not including `();`).
The `getNextToken()` method returns the ID of the next token (as defined by the `Parser::T_*` constants). If no more
tokens are available it must return `0`, which is the ID of the `EOF` token. Furthermore the string content of the
token should be written into the by-reference `$value` parameter (which will then be available as `$n` in the parser).
### Attribute handling
The other two by-ref variables `$startAttributes` and `$endAttributes` define which attributes will eventually be
assigned to the generated nodes: The parser will take the `$startAttributes` from the first token which is part of the
node and the `$endAttributes` from the last token that is part of the node.
E.g. if the tokens `T_FUNCTION T_STRING ... '{' ... '}'` constitute a node, then the `$startAttributes` from the
`T_FUNCTION` token will be taken and the `$endAttributes` from the `'}'` token.
An application of custom attributes is storing the exact original formatting of literals: While the parser does retain
some information about the formatting of integers (like decimal vs. hexadecimal) or strings (like used quote type), it
does not preserve the exact original formatting (e.g. leading zeros for integers or escape sequences in strings). This
can be remedied by storing the original value in an attribute:
```php
use PhpParser\Lexer;
use PhpParser\Parser\Tokens;
class KeepOriginalValueLexer extends Lexer // or Lexer\Emulative
{
public function getNextToken(&$value = null, &$startAttributes = null, &$endAttributes = null) {
$tokenId = parent::getNextToken($value, $startAttributes, $endAttributes);
if ($tokenId == Tokens::T_CONSTANT_ENCAPSED_STRING // non-interpolated string
|| $tokenId == Tokens::T_ENCAPSED_AND_WHITESPACE // interpolated string
|| $tokenId == Tokens::T_LNUMBER // integer
|| $tokenId == Tokens::T_DNUMBER // floating point number
) {
// could also use $startAttributes, doesn't really matter here
$endAttributes['originalValue'] = $value;
}
return $tokenId;
}
}
```

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Name resolution
===============
Since the introduction of namespaces in PHP 5.3, literal names in PHP code are subject to a
relatively complex name resolution process, which is based on the current namespace, the current
import table state, as well the type of the referenced symbol. PHP-Parser implements name
resolution and related functionality, both as reusable logic (NameContext), as well as a node
visitor (NameResolver) based on it.
The NameResolver visitor
------------------------
The `NameResolver` visitor can (and for nearly all uses of the AST, is) be applied to resolve names
to their fully-qualified form, to the degree that this is possible.
```php
$nameResolver = new PhpParser\NodeVisitor\NameResolver;
$nodeTraverser = new PhpParser\NodeTraverser;
$nodeTraverser->addVisitor($nameResolver);
// Resolve names
$stmts = $nodeTraverser->traverse($stmts);
```
In the default configuration, the name resolver will perform three actions:
* Declarations of functions, classes, interfaces, traits and global constants will have a
`namespacedName` property added, which contains the function/class/etc name including the
namespace prefix. For historic reasons this is a **property** rather than an attribute.
* Names will be replaced by fully qualified resolved names, which are instances of
`Node\Name\FullyQualified`.
* Unqualified function and constant names inside a namespace cannot be statically resolved. Inside
a namespace `Foo`, a call to `strlen()` may either refer to the namespaced `\Foo\strlen()`, or
the global `\strlen()`. Because PHP-Parser does not have the necessary context to decide this,
such names are left unresolved. Additionally a `namespacedName` **attribute** is added to the
name node.
The name resolver accepts an option array as the second argument, with the following default values:
```php
$nameResolver = new PhpParser\NodeVisitor\NameResolver(null, [
'preserveOriginalNames' => false,
'replaceNodes' => true,
]);
```
If the `preserveOriginalNames` option is enabled, then the resolved (fully qualified) name will have
an `originalName` attribute, which contains the unresolved name.
If the `replaceNodes` option is disabled, then names will no longer be resolved in-place. Instead a
`resolvedName` attribute will be added to each name, which contains the resolved (fully qualified)
name. Once again, if an unqualified function or constant name cannot be resolved, then the
`resolvedName` attribute will not be present, and instead a `namespacedName` attribute is added.
The `replaceNodes` attribute is useful if you wish to perform modifications on the AST, as you
probably do not wish the resoluting code to have fully resolved names as a side-effect.
The NameContext
---------------
The actual name resolution logic is implemented in the `NameContext` class, which has the following
public API:
```php
class NameContext {
public function __construct(ErrorHandler $errorHandler);
public function startNamespace(Name $namespace = null);
public function addAlias(Name $name, string $aliasName, int $type, array $errorAttrs = []);
public function getNamespace();
public function getResolvedName(Name $name, int $type);
public function getResolvedClassName(Name $name) : Name;
public function getPossibleNames(string $name, int $type) : array;
public function getShortName(string $name, int $type) : Name;
}
```
The `$type` parameters accept on of the `Stmt\Use_::TYPE_*` constants, which represent the three
basic symbol types in PHP (functions, constants and everything else).
Next to name resolution, the `NameContext` also supports the reverse operation of finding a short
representation of a name given the current name resolution environment.
The name context is intended to be used for name resolution operations outside the AST itself, such
as class names inside doc comments. A visitor running in parallel with the name resolver can access
the name context using `$nameResolver->getNameContext()`. Alternatively a visitor can use an
independent context and explicitly feed `Namespace` and `Use` nodes to it.

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Performance
===========
Parsing is computationally expensive task, to which the PHP language is not very well suited.
Nonetheless, there are a few things you can do to improve the performance of this library, which are
described in the following.
Xdebug
------
Running PHP with XDebug adds a lot of overhead, especially for code that performs many method calls.
Just by loading XDebug (without enabling profiling or other more intrusive XDebug features), you
can expect that code using PHP-Parser will be approximately *five times slower*.
As such, you should make sure that XDebug is not loaded when using this library. Note that setting
the `xdebug.default_enable=0` ini option does *not* disable XDebug. The *only* way to disable
XDebug is to not load the extension in the first place.
If you are building a command-line utility for use by developers (who often have XDebug enabled),
you may want to consider automatically restarting PHP with XDebug unloaded. The
[composer/xdebug-handler](https://github.com/composer/xdebug-handler) package can be used to do
this.
If you do run with XDebug, you may need to increase the `xdebug.max_nesting_level` option to a
higher level, such as 3000. While the parser itself is recursion free, most other code working on
the AST uses recursion and will generate an error if the value of this option is too low.
Assertions
----------
Assertions should be disabled in a production context by setting `zend.assertions=-1` (or
`zend.assertions=0` if set at runtime). The library currently doesn't make heavy use of assertions,
but they are used in an increasing number of places.
Object reuse
------------
Many objects in this project are designed for reuse. For example, one `Parser` object can be used to
parse multiple files.
When possible, objects should be reused rather than being newly instantiated for every use. Some
objects have expensive initialization procedures, which will be unnecessarily repeated if the object
is not reused. (Currently two objects with particularly expensive setup are lexers and pretty
printers, though the details might change between versions of this library.)
Garbage collection
------------------
A limitation in PHP's cyclic garbage collector may lead to major performance degradation when the
active working set exceeds 10000 objects (or arrays). Especially when parsing very large files this
limit is significantly exceeded and PHP will spend the majority of time performing unnecessary
garbage collection attempts.
Without GC, parsing time is roughly linear in the input size. With GC, this degenerates to quadratic
runtime for large files. While the specifics may differ, as a rough guideline you may expect a 2.5x
GC overhead for 500KB files and a 5x overhead for 1MB files.
Because this a limitation in PHP's implementation, there is no easy way to work around this. If
possible, you should avoid parsing very large files, as they will impact overall execution time
disproportionally (and are usually generated anyway).
Of course, you can also try to (temporarily) disable GC. By design the AST generated by PHP-Parser
is cycle-free, so the AST itself will never cause leaks with GC disabled. However, other code
(including for example the parser object itself) may hold cycles, so disabling of GC should be
approached with care.

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Pretty printing
===============
Pretty printing is the process of converting a syntax tree back to PHP code. In its basic mode of
operation the pretty printer provided by this library will print the AST using a certain predefined
code style and will discard (nearly) all formatting of the original code. Because programmers tend
to be rather picky about their code formatting, this mode of operation is not very suitable for
refactoring code, but can be used for automatically generated code, which is usually only read for
debugging purposes.
Basic usage
-----------
```php
$stmts = $parser->parse($code);
// MODIFY $stmts here
$prettyPrinter = new PhpParser\PrettyPrinter\Standard;
$newCode = $prettyPrinter->prettyPrintFile($stmts);
```
The pretty printer has three basic printing methods: `prettyPrint()`, `prettyPrintFile()` and
`prettyPrintExpr()`. The one that is most commonly useful is `prettyPrintFile()`, which takes an
array of statements and produces a full PHP file, including opening `<?php`.
`prettyPrint()` also takes a statement array, but produces code which is valid inside an already
open `<?php` context. Lastly, `prettyPrintExpr()` takes an `Expr` node and prints only a single
expression.
Customizing the formatting
--------------------------
Apart from an `shortArraySyntax` option, the default pretty printer does not provide any
functionality to customize the formatting of the generated code. The pretty printer does respect a
number of `kind` attributes used by some notes (e.g., whether an integer should be printed as
decimal, hexadecimal, etc), but there are no options to control brace placement or similar.
If you want to make minor changes to the formatting, the easiest way is to extend the pretty printer
and override the methods responsible for the node types you are interested in.
If you want to have more fine-grained formatting control, the recommended method is to combine the
default pretty printer with an existing library for code reformatting, such as
[PHP-CS-Fixer](https://github.com/FriendsOfPHP/PHP-CS-Fixer).
Formatting-preserving pretty printing
-------------------------------------
> **Note:** This functionality is **experimental** and not yet complete.
For automated code refactoring, migration and similar, you will usually only want to modify a small
portion of the code and leave the remainder alone. The basic pretty printer is not suitable for
this, because it will also reformat parts of the code which have not been modified.
Since PHP-Parser 4.0, an experimental formatting-preserving pretty-printing mode is available, which
attempts to preserve the formatting of code (those AST nodes that have not changed) and only reformat
code which has been modified or newly inserted.
Use of the formatting-preservation functionality requires some additional preparatory steps:
```php
use PhpParser\{Lexer, NodeTraverser, NodeVisitor, Parser, PrettyPrinter};
$lexer = new Lexer\Emulative([
'usedAttributes' => [
'comments',
'startLine', 'endLine',
'startTokenPos', 'endTokenPos',
],
]);
$parser = new Parser\Php7($lexer);
$traverser = new NodeTraverser();
$traverser->addVisitor(new NodeVisitor\CloningVisitor());
$printer = new PrettyPrinter\Standard();
$oldStmts = $parser->parse($code);
$oldTokens = $lexer->getTokens();
$newStmts = $traverser->traverse($oldStmts);
// MODIFY $newStmts HERE
$newCode = $printer->printFormatPreserving($newStmts, $oldStmts, $oldTokens);
```
If you make use of the name resolution functionality, you will likely want to disable the
`replaceNodes` option. This will add resolved names as attributes, instead of directlying modifying
the AST and causing spurious changes to the pretty printed code. For more information, see the
[name resolution documentation](Name_resolution.markdown).
This functionality is experimental and not yet fully implemented. It should not provide incorrect
code, but it may sometimes reformat more code than necessary. Open issues are tracked in
[issue #344](https://github.com/nikic/PHP-Parser/issues/344). If you encounter problems while using
this functionality, please open an issue, so we know what to prioritize.

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Walking the AST
===============
The most common way to work with the AST is by using a node traverser and one or more node visitors.
As a basic example, the following code changes all literal integers in the AST into strings (e.g.,
`42` becomes `'42'`.)
```php
use PhpParser\{Node, NodeTraverser, NodeVisitorAbstract};
$traverser = new NodeTraverser;
$traverser->addVisitor(new class extends NodeVisitorAbstract {
public function leaveNode(Node $node) {
if ($node instanceof Node\Scalar\LNumber) {
return new Node\Scalar\String_((string) $node->value);
}
}
});
$stmts = ...;
$modifiedStmts = $traverser->traverse($stmts);
```
Node visitors
-------------
Each node visitor implements an interface with following four methods:
```php
interface NodeVisitor {
public function beforeTraverse(array $nodes);
public function enterNode(Node $node);
public function leaveNode(Node $node);
public function afterTraverse(array $nodes);
}
```
The `beforeTraverse()` and `afterTraverse()` methods are called before and after the traversal
respectively, and are passed the entire AST. They can be used to perform any necessary state
setup or cleanup.
The `enterNode()` method is called when a node is first encountered, before its children are
processed ("preorder"). The `leaveNode()` method is called after all children have been visited
("postorder").
For example, if we have the following excerpt of an AST
```
Expr_FuncCall(
name: Name(
parts: array(
0: printLine
)
)
args: array(
0: Arg(
value: Scalar_String(
value: Hello World!!!
)
byRef: false
unpack: false
)
)
)
```
then the enter/leave methods will be called in the following order:
```
enterNode(Expr_FuncCall)
enterNode(Name)
leaveNode(Name)
enterNode(Arg)
enterNode(Scalar_String)
leaveNode(Scalar_String)
leaveNode(Arg)
leaveNode(Expr_FuncCall)
```
A common pattern is that `enterNode` is used to collect some information and then `leaveNode`
performs modifications based on that. At the time when `leaveNode` is called, all the code inside
the node will have already been visited and necessary information collected.
As you usually do not want to implement all four methods, it is recommended that you extend
`NodeVisitorAbstract` instead of implementing the interface directly. The abstract class provides
empty default implementations.
Modifying the AST
-----------------
There are a number of ways in which the AST can be modified from inside a node visitor. The first
and simplest is to simply change AST properties inside the visitor:
```php
public function leaveNode(Node $node) {
if ($node instanceof Node\Scalar\LNumber) {
// increment all integer literals
$node->value++;
}
}
```
The second is to replace a node entirely by returning a new node:
```php
public function leaveNode(Node $node) {
if ($node instanceof Node\Expr\BinaryOp\BooleanAnd) {
// Convert all $a && $b expressions into !($a && $b)
return new Node\Expr\BooleanNot($node);
}
}
```
Doing this is supported both inside enterNode and leaveNode. However, you have to be mindful about
where you perform the replacement: If a node is replaced in enterNode, then the recursive traversal
will also consider the children of the new node. If you aren't careful, this can lead to infinite
recursion. For example, let's take the previous code sample and use enterNode instead:
```php
public function enterNode(Node $node) {
if ($node instanceof Node\Expr\BinaryOp\BooleanAnd) {
// Convert all $a && $b expressions into !($a && $b)
return new Node\Expr\BooleanNot($node);
}
}
```
Now `$a && $b` will be replaced by `!($a && $b)`. Then the traverser will go into the first (and
only) child of `!($a && $b)`, which is `$a && $b`. The transformation applies again and we end up
with `!!($a && $b)`. This will continue until PHP hits the memory limit.
Finally, two special replacement types are supported only by leaveNode. The first is removal of a
node:
```php
public function leaveNode(Node $node) {
if ($node instanceof Node\Stmt\Return_) {
// Remove all return statements
return NodeTraverser::REMOVE_NODE;
}
}
```
Node removal only works if the parent structure is an array. This means that usually it only makes
sense to remove nodes of type `Node\Stmt`, as they always occur inside statement lists (and a few
more node types like `Arg` or `Expr\ArrayItem`, which are also always part of lists).
On the other hand, removing a `Node\Expr` does not make sense: If you have `$a * $b`, there is no
meaningful way in which the `$a` part could be removed. If you want to remove an expression, you
generally want to remove it together with a surrounding expression statement:
```php
public function leaveNode(Node $node) {
if ($node instanceof Node\Stmt\Expression
&& $node->expr instanceof Node\Expr\FuncCall
&& $node->expr->name instanceof Node\Name
&& $node->expr->name->toString() === 'var_dump'
) {
return NodeTraverser::REMOVE_NODE;
}
}
```
This example will remove all calls to `var_dump()` which occur as expression statements. This means
that `var_dump($a);` will be removed, but `if (var_dump($a))` will not be removed (and there is no
obvious way in which it can be removed).
Next to removing nodes, it is also possible to replace one node with multiple nodes. Again, this
only works inside leaveNode and only if the parent structure is an array.
```php
public function leaveNode(Node $node) {
if ($node instanceof Node\Stmt\Return_ && $node->expr !== null) {
// Convert "return foo();" into "$retval = foo(); return $retval;"
$var = new Node\Expr\Variable('retval');
return [
new Node\Stmt\Expression(new Node\Expr\Assign($var, $node->expr)),
new Node\Stmt\Return_($var),
];
}
}
```
Short-circuiting traversal
--------------------------
An AST can easily contain thousands of nodes, and traversing over all of them may be slow,
especially if you have more than one visitor. In some cases, it is possible to avoid a full
traversal.
If you are looking for all class declarations in a file (and assuming you're not interested in
anonymous classes), you know that once you've seen a class declaration, there is no point in also
checking all it's child nodes, because PHP does not allow nesting classes. In this case, you can
instruct the traverser to not recurse into the class node:
```
private $classes = [];
public function enterNode(Node $node) {
if ($node instanceof Node\Stmt\Class_) {
$this->classes[] = $node;
return NodeTraverser::DONT_TRAVERSE_CHILDREN;
}
}
```
Of course, this option is only available in enterNode, because it's already too late by the time
leaveNode is reached.
If you are only looking for one specific node, it is also possible to abort the traversal entirely
after finding it. For example, if you are looking for the node of a class with a certain name (and
discounting exotic cases like conditionally defining a class two times), you can stop traversal
once you found it:
```
private $class = null;
public function enterNode(Node $node) {
if ($node instanceof Node\Stmt\Class_ &&
$node->namespacedName->toString() === 'Foo\Bar\Baz'
) {
$this->class = $node;
return NodeTraverser::STOP_TRAVERSAL;
}
}
```
This works both in enterNode and leaveNode. Note that this particular case can also be more easily
handled using a NodeFinder, which will be introduced below.
Multiple visitors
-----------------
A single traverser can be used with multiple visitors:
```php
$traverser = new NodeTraverser;
$traverser->addVisitor($visitorA);
$traverser->addVisitor($visitorB);
$stmts = $traverser->traverse($stmts);
```
It is important to understand that if a traverser is run with multiple visitors, the visitors will
be interleaved. Given the following AST excerpt
```
Stmt_Return(
expr: Expr_Variable(
name: foobar
)
)
```
the following method calls will be performed:
```
$visitorA->enterNode(Stmt_Return)
$visitorB->enterNode(Stmt_Return)
$visitorA->enterNode(Expr_Variable)
$visitorB->enterNode(Expr_Variable)
$visitorA->leaveNode(Expr_Variable)
$visitorB->leaveNode(Expr_Variable)
$visitorA->leaveNode(Stmt_Return)
$visitorB->leaveNode(Stmt_Return)
```
That is, when visiting a node, enterNode and leaveNode will always be called for all visitors.
Running multiple visitors in parallel improves performance, as the AST only has to be traversed
once. However, it is not always possible to write visitors in a way that allows interleaved
execution. In this case, you can always fall back to performing multiple traversals:
```php
$traverserA = new NodeTraverser;
$traverserA->addVisitor($visitorA);
$traverserB = new NodeTraverser;
$traverserB->addVisitor($visitorB);
$stmts = $traverserA->traverser($stmts);
$stmts = $traverserB->traverser($stmts);
```
When using multiple visitors, it is important to understand how they interact with the various
special enterNode/leaveNode return values:
* If *any* visitor returns `DONT_TRAVERSE_CHILDREN`, the children will be skipped for *all*
visitors.
* If *any* visitor returns `DONT_TRAVERSE_CURRENT_AND_CHILDREN`, the children will be skipped for *all*
visitors, and all *subsequent* visitors will not visit the current node.
* If *any* visitor returns `STOP_TRAVERSAL`, traversal is stopped for *all* visitors.
* If a visitor returns a replacement node, subsequent visitors will be passed the replacement node,
not the original one.
* If a visitor returns `REMOVE_NODE`, subsequent visitors will not see this node.
* If a visitor returns an array of replacement nodes, subsequent visitors will see neither the node
that was replaced, nor the replacement nodes.
Simple node finding
-------------------
While the node visitor mechanism is very flexible, creating a node visitor can be overly cumbersome
for minor tasks. For this reason a `NodeFinder` is provided, which can find AST nodes that either
satisfy a certain callback, or which are instanced of a certain node type. A couple of examples are
shown in the following:
```php
use PhpParser\{Node, NodeFinder};
$nodeFinder = new NodeFinder;
// Find all class nodes.
$classes = $nodeFinder->findInstanceOf($stmts, Node\Stmt\Class_::class);
// Find all classes that extend another class
$extendingClasses = $nodeFinder->find($stmts, function(Node $node) {
return $node instanceof Node\Stmt\Class_
&& $node->extends !== null;
});
// Find first class occuring in the AST. Returns null if no class exists.
$class = $nodeFinder->findFirstInstanceOf($stmts, Node\Stmt\Class_::class);
// Find first class that has name $name
$class = $nodeFinder->findFirst($stmts, function(Node $node) use ($name) {
return $node instanceof Node\Stmt\Class_
&& $node->resolvedName->toString() === $name;
});
```
Internally, the `NodeFinder` also uses a node traverser. It only simplifies the interface for a
common use case.
Parent and sibling references
-----------------------------
The node visitor mechanism is somewhat rigid, in that it prescribes an order in which nodes should
be accessed: From parents to children. However, it can often be convenient to operate in the
reverse direction: When working on a node, you might want to check if the parent node satisfies a
certain property.
PHP-Parser does not add parent (or sibling) references to nodes by itself, but you can easily
emulate this with a visitor. See the [FAQ](FAQ.markdown) for more information.

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What do all those files mean?
=============================
* `php5.y`: PHP 5 grammar written in a pseudo language
* `php7.y`: PHP 7 grammar written in a pseudo language
* `tokens.y`: Tokens definition shared between PHP 5 and PHP 7 grammars
* `parser.template`: A `kmyacc` parser prototype file for PHP
* `tokens.template`: A `kmyacc` prototype file for the `Tokens` class
* `rebuildParsers.php`: Preprocesses the grammar and builds the parser using `kmyacc`
.phpy pseudo language
=====================
The `.y` file is a normal grammar in `kmyacc` (`yacc`) style, with some transformations
applied to it:
* Nodes are created using the syntax `Name[..., ...]`. This is transformed into
`new Name(..., ..., attributes())`
* Some function-like constructs are resolved (see `rebuildParsers.php` for a list)
Building the parser
===================
In order to rebuild the parser, you need [moriyoshi's fork of kmyacc](https://github.com/moriyoshi/kmyacc-forked).
After you compiled/installed it, run the `rebuildParsers.php` script.
By default only the `Parser.php` is built. If you want to additionally emit debug symbols and create `y.output`, run the
script with `--debug`. If you want to retain the preprocessed grammar pass `--keep-tmp-grammar`.

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<?php
$meta #
#semval($) $this->semValue
#semval($,%t) $this->semValue
#semval(%n) $stackPos-(%l-%n)
#semval(%n,%t) $stackPos-(%l-%n)
namespace PhpParser\Parser;
use PhpParser\Error;
use PhpParser\Node;
use PhpParser\Node\Expr;
use PhpParser\Node\Name;
use PhpParser\Node\Scalar;
use PhpParser\Node\Stmt;
#include;
/* This is an automatically GENERATED file, which should not be manually edited.
* Instead edit one of the following:
* * the grammar files grammar/php5.y or grammar/php7.y
* * the skeleton file grammar/parser.template
* * the preprocessing script grammar/rebuildParsers.php
*/
class #(-p) extends \PhpParser\ParserAbstract
{
protected $tokenToSymbolMapSize = #(YYMAXLEX);
protected $actionTableSize = #(YYLAST);
protected $gotoTableSize = #(YYGLAST);
protected $invalidSymbol = #(YYBADCH);
protected $errorSymbol = #(YYINTERRTOK);
protected $defaultAction = #(YYDEFAULT);
protected $unexpectedTokenRule = #(YYUNEXPECTED);
protected $YY2TBLSTATE = #(YY2TBLSTATE);
protected $numNonLeafStates = #(YYNLSTATES);
protected $symbolToName = array(
#listvar terminals
);
protected $tokenToSymbol = array(
#listvar yytranslate
);
protected $action = array(
#listvar yyaction
);
protected $actionCheck = array(
#listvar yycheck
);
protected $actionBase = array(
#listvar yybase
);
protected $actionDefault = array(
#listvar yydefault
);
protected $goto = array(
#listvar yygoto
);
protected $gotoCheck = array(
#listvar yygcheck
);
protected $gotoBase = array(
#listvar yygbase
);
protected $gotoDefault = array(
#listvar yygdefault
);
protected $ruleToNonTerminal = array(
#listvar yylhs
);
protected $ruleToLength = array(
#listvar yylen
);
#if -t
protected $productions = array(
#production-strings;
);
#endif
protected function initReduceCallbacks() {
$this->reduceCallbacks = [
#reduce
%n => function ($stackPos) {
%b
},
#noact
%n => function ($stackPos) {
$this->semValue = $this->semStack[$stackPos];
},
#endreduce
];
}
}
#tailcode;

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<?php
$grammarFileToName = [
__DIR__ . '/php5.y' => 'Php5',
__DIR__ . '/php7.y' => 'Php7',
];
$tokensFile = __DIR__ . '/tokens.y';
$tokensTemplate = __DIR__ . '/tokens.template';
$skeletonFile = __DIR__ . '/parser.template';
$tmpGrammarFile = __DIR__ . '/tmp_parser.phpy';
$tmpResultFile = __DIR__ . '/tmp_parser.php';
$resultDir = __DIR__ . '/../lib/PhpParser/Parser';
$tokensResultsFile = $resultDir . '/Tokens.php';
// check for kmyacc.exe binary in this directory, otherwise fall back to global name
$kmyacc = __DIR__ . '/kmyacc.exe';
if (!file_exists($kmyacc)) {
$kmyacc = 'kmyacc';
}
$options = array_flip($argv);
$optionDebug = isset($options['--debug']);
$optionKeepTmpGrammar = isset($options['--keep-tmp-grammar']);
///////////////////////////////
/// Utility regex constants ///
///////////////////////////////
const LIB = '(?(DEFINE)
(?<singleQuotedString>\'[^\\\\\']*+(?:\\\\.[^\\\\\']*+)*+\')
(?<doubleQuotedString>"[^\\\\"]*+(?:\\\\.[^\\\\"]*+)*+")
(?<string>(?&singleQuotedString)|(?&doubleQuotedString))
(?<comment>/\*[^*]*+(?:\*(?!/)[^*]*+)*+\*/)
(?<code>\{[^\'"/{}]*+(?:(?:(?&string)|(?&comment)|(?&code)|/)[^\'"/{}]*+)*+})
)';
const PARAMS = '\[(?<params>[^[\]]*+(?:\[(?&params)\][^[\]]*+)*+)\]';
const ARGS = '\((?<args>[^()]*+(?:\((?&args)\)[^()]*+)*+)\)';
///////////////////
/// Main script ///
///////////////////
$tokens = file_get_contents($tokensFile);
foreach ($grammarFileToName as $grammarFile => $name) {
echo "Building temporary $name grammar file.\n";
$grammarCode = file_get_contents($grammarFile);
$grammarCode = str_replace('%tokens', $tokens, $grammarCode);
$grammarCode = resolveNodes($grammarCode);
$grammarCode = resolveMacros($grammarCode);
$grammarCode = resolveStackAccess($grammarCode);
file_put_contents($tmpGrammarFile, $grammarCode);
$additionalArgs = $optionDebug ? '-t -v' : '';
echo "Building $name parser.\n";
$output = trim(shell_exec("$kmyacc $additionalArgs -l -m $skeletonFile -p $name $tmpGrammarFile 2>&1"));
echo "Output: \"$output\"\n";
$resultCode = file_get_contents($tmpResultFile);
$resultCode = removeTrailingWhitespace($resultCode);
ensureDirExists($resultDir);
file_put_contents("$resultDir/$name.php", $resultCode);
unlink($tmpResultFile);
echo "Building token definition.\n";
$output = trim(shell_exec("$kmyacc -l -m $tokensTemplate $tmpGrammarFile 2>&1"));
assert($output === '');
rename($tmpResultFile, $tokensResultsFile);
if (!$optionKeepTmpGrammar) {
unlink($tmpGrammarFile);
}
}
///////////////////////////////
/// Preprocessing functions ///
///////////////////////////////
function resolveNodes($code) {
return preg_replace_callback(
'~\b(?<name>[A-Z][a-zA-Z_\\\\]++)\s*' . PARAMS . '~',
function($matches) {
// recurse
$matches['params'] = resolveNodes($matches['params']);
$params = magicSplit(
'(?:' . PARAMS . '|' . ARGS . ')(*SKIP)(*FAIL)|,',
$matches['params']
);
$paramCode = '';
foreach ($params as $param) {
$paramCode .= $param . ', ';
}
return 'new ' . $matches['name'] . '(' . $paramCode . 'attributes())';
},
$code
);
}
function resolveMacros($code) {
return preg_replace_callback(
'~\b(?<!::|->)(?!array\()(?<name>[a-z][A-Za-z]++)' . ARGS . '~',
function($matches) {
// recurse
$matches['args'] = resolveMacros($matches['args']);
$name = $matches['name'];
$args = magicSplit(
'(?:' . PARAMS . '|' . ARGS . ')(*SKIP)(*FAIL)|,',
$matches['args']
);
if ('attributes' == $name) {
assertArgs(0, $args, $name);
return '$this->startAttributeStack[#1] + $this->endAttributes';
}
if ('stackAttributes' == $name) {
assertArgs(1, $args, $name);
return '$this->startAttributeStack[' . $args[0] . ']'
. ' + $this->endAttributeStack[' . $args[0] . ']';
}
if ('init' == $name) {
return '$$ = array(' . implode(', ', $args) . ')';
}
if ('push' == $name) {
assertArgs(2, $args, $name);
return $args[0] . '[] = ' . $args[1] . '; $$ = ' . $args[0];
}
if ('pushNormalizing' == $name) {
assertArgs(2, $args, $name);
return 'if (is_array(' . $args[1] . ')) { $$ = array_merge(' . $args[0] . ', ' . $args[1] . '); }'
. ' else { ' . $args[0] . '[] = ' . $args[1] . '; $$ = ' . $args[0] . '; }';
}
if ('toArray' == $name) {
assertArgs(1, $args, $name);
return 'is_array(' . $args[0] . ') ? ' . $args[0] . ' : array(' . $args[0] . ')';
}
if ('parseVar' == $name) {
assertArgs(1, $args, $name);
return 'substr(' . $args[0] . ', 1)';
}
if ('parseEncapsed' == $name) {
assertArgs(3, $args, $name);
return 'foreach (' . $args[0] . ' as $s) { if ($s instanceof Node\Scalar\EncapsedStringPart) {'
. ' $s->value = Node\Scalar\String_::parseEscapeSequences($s->value, ' . $args[1] . ', ' . $args[2] . '); } }';
}
if ('makeNop' == $name) {
assertArgs(3, $args, $name);
return '$startAttributes = ' . $args[1] . ';'
. ' if (isset($startAttributes[\'comments\']))'
. ' { ' . $args[0] . ' = new Stmt\Nop($startAttributes + ' . $args[2] . '); }'
. ' else { ' . $args[0] . ' = null; }';
}
if ('strKind' == $name) {
assertArgs(1, $args, $name);
return '(' . $args[0] . '[0] === "\'" || (' . $args[0] . '[1] === "\'" && '
. '(' . $args[0] . '[0] === \'b\' || ' . $args[0] . '[0] === \'B\')) '
. '? Scalar\String_::KIND_SINGLE_QUOTED : Scalar\String_::KIND_DOUBLE_QUOTED)';
}
if ('prependLeadingComments' == $name) {
assertArgs(1, $args, $name);
return '$attrs = $this->startAttributeStack[#1]; $stmts = ' . $args[0] . '; '
. 'if (!empty($attrs[\'comments\'])) {'
. '$stmts[0]->setAttribute(\'comments\', '
. 'array_merge($attrs[\'comments\'], $stmts[0]->getAttribute(\'comments\', []))); }';
}
return $matches[0];
},
$code
);
}
function assertArgs($num, $args, $name) {
if ($num != count($args)) {
die('Wrong argument count for ' . $name . '().');
}
}
function resolveStackAccess($code) {
$code = preg_replace('/\$\d+/', '$this->semStack[$0]', $code);
$code = preg_replace('/#(\d+)/', '$$1', $code);
return $code;
}
function removeTrailingWhitespace($code) {
$lines = explode("\n", $code);
$lines = array_map('rtrim', $lines);
return implode("\n", $lines);
}
function ensureDirExists($dir) {
if (!is_dir($dir)) {
mkdir($dir, 0777, true);
}
}
//////////////////////////////
/// Regex helper functions ///
//////////////////////////////
function regex($regex) {
return '~' . LIB . '(?:' . str_replace('~', '\~', $regex) . ')~';
}
function magicSplit($regex, $string) {
$pieces = preg_split(regex('(?:(?&string)|(?&comment)|(?&code))(*SKIP)(*FAIL)|' . $regex), $string);
foreach ($pieces as &$piece) {
$piece = trim($piece);
}
if ($pieces === ['']) {
return [];
}
return $pieces;
}

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vendor/nikic/php-parser/grammar/tokens.template vendored Normal file
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<?php
$meta #
#semval($) $this->semValue
#semval($,%t) $this->semValue
#semval(%n) $this->stackPos-(%l-%n)
#semval(%n,%t) $this->stackPos-(%l-%n)
namespace PhpParser\Parser;
#include;
/* GENERATED file based on grammar/tokens.y */
final class Tokens
{
#tokenval
const %s = %n;
#endtokenval
}

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/* We currently rely on the token ID mapping to be the same between PHP 5 and PHP 7 - so the same lexer can be used for
* both. This is enforced by sharing this token file. */
%left T_INCLUDE T_INCLUDE_ONCE T_EVAL T_REQUIRE T_REQUIRE_ONCE
%left ','
%left T_LOGICAL_OR
%left T_LOGICAL_XOR
%left T_LOGICAL_AND
%right T_PRINT
%right T_YIELD
%right T_DOUBLE_ARROW
%right T_YIELD_FROM
%left '=' T_PLUS_EQUAL T_MINUS_EQUAL T_MUL_EQUAL T_DIV_EQUAL T_CONCAT_EQUAL T_MOD_EQUAL T_AND_EQUAL T_OR_EQUAL T_XOR_EQUAL T_SL_EQUAL T_SR_EQUAL T_POW_EQUAL T_COALESCE_EQUAL
%left '?' ':'
%right T_COALESCE
%left T_BOOLEAN_OR
%left T_BOOLEAN_AND
%left '|'
%left '^'
%left '&'
%nonassoc T_IS_EQUAL T_IS_NOT_EQUAL T_IS_IDENTICAL T_IS_NOT_IDENTICAL T_SPACESHIP
%nonassoc '<' T_IS_SMALLER_OR_EQUAL '>' T_IS_GREATER_OR_EQUAL
%left T_SL T_SR
%left '+' '-' '.'
%left '*' '/' '%'
%right '!'
%nonassoc T_INSTANCEOF
%right '~' T_INC T_DEC T_INT_CAST T_DOUBLE_CAST T_STRING_CAST T_ARRAY_CAST T_OBJECT_CAST T_BOOL_CAST T_UNSET_CAST '@'
%right T_POW
%right '['
%nonassoc T_NEW T_CLONE
%token T_EXIT
%token T_IF
%left T_ELSEIF
%left T_ELSE
%left T_ENDIF
%token T_LNUMBER
%token T_DNUMBER
%token T_STRING
%token T_STRING_VARNAME
%token T_VARIABLE
%token T_NUM_STRING
%token T_INLINE_HTML
%token T_CHARACTER
%token T_BAD_CHARACTER
%token T_ENCAPSED_AND_WHITESPACE
%token T_CONSTANT_ENCAPSED_STRING
%token T_ECHO
%token T_DO
%token T_WHILE
%token T_ENDWHILE
%token T_FOR
%token T_ENDFOR
%token T_FOREACH
%token T_ENDFOREACH
%token T_DECLARE
%token T_ENDDECLARE
%token T_AS
%token T_SWITCH
%token T_ENDSWITCH
%token T_CASE
%token T_DEFAULT
%token T_BREAK
%token T_CONTINUE
%token T_GOTO
%token T_FUNCTION
%token T_CONST
%token T_RETURN
%token T_TRY
%token T_CATCH
%token T_FINALLY
%token T_THROW
%token T_USE
%token T_INSTEADOF
%token T_GLOBAL
%right T_STATIC T_ABSTRACT T_FINAL T_PRIVATE T_PROTECTED T_PUBLIC
%token T_VAR
%token T_UNSET
%token T_ISSET
%token T_EMPTY
%token T_HALT_COMPILER
%token T_CLASS
%token T_TRAIT
%token T_INTERFACE
%token T_EXTENDS
%token T_IMPLEMENTS
%token T_OBJECT_OPERATOR
%token T_DOUBLE_ARROW
%token T_LIST
%token T_ARRAY
%token T_CALLABLE
%token T_CLASS_C
%token T_TRAIT_C
%token T_METHOD_C
%token T_FUNC_C
%token T_LINE
%token T_FILE
%token T_COMMENT
%token T_DOC_COMMENT
%token T_OPEN_TAG
%token T_OPEN_TAG_WITH_ECHO
%token T_CLOSE_TAG
%token T_WHITESPACE
%token T_START_HEREDOC
%token T_END_HEREDOC
%token T_DOLLAR_OPEN_CURLY_BRACES
%token T_CURLY_OPEN
%token T_PAAMAYIM_NEKUDOTAYIM
%token T_NAMESPACE
%token T_NS_C
%token T_DIR
%token T_NS_SEPARATOR
%token T_ELLIPSIS

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vendor/nikic/php-parser/lib/PhpParser/Builder.php vendored Normal file
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<?php declare(strict_types=1);
namespace PhpParser;
interface Builder
{
/**
* Returns the built node.
*
* @return Node The built node
*/
public function getNode() : Node;
}

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<?php declare(strict_types=1);
namespace PhpParser\Builder;
use PhpParser;
use PhpParser\BuilderHelpers;
use PhpParser\Node\Name;
use PhpParser\Node\Stmt;
class Class_ extends Declaration
{
protected $name;
protected $extends = null;
protected $implements = [];
protected $flags = 0;
protected $uses = [];
protected $constants = [];
protected $properties = [];
protected $methods = [];
/**
* Creates a class builder.
*
* @param string $name Name of the class
*/
public function __construct(string $name) {
$this->name = $name;
}
/**
* Extends a class.
*
* @param Name|string $class Name of class to extend
*
* @return $this The builder instance (for fluid interface)
*/
public function extend($class) {
$this->extends = BuilderHelpers::normalizeName($class);
return $this;
}
/**
* Implements one or more interfaces.
*
* @param Name|string ...$interfaces Names of interfaces to implement
*
* @return $this The builder instance (for fluid interface)
*/
public function implement(...$interfaces) {
foreach ($interfaces as $interface) {
$this->implements[] = BuilderHelpers::normalizeName($interface);
}
return $this;
}
/**
* Makes the class abstract.
*
* @return $this The builder instance (for fluid interface)
*/
public function makeAbstract() {
$this->flags = BuilderHelpers::addModifier($this->flags, Stmt\Class_::MODIFIER_ABSTRACT);
return $this;
}
/**
* Makes the class final.
*
* @return $this The builder instance (for fluid interface)
*/
public function makeFinal() {
$this->flags = BuilderHelpers::addModifier($this->flags, Stmt\Class_::MODIFIER_FINAL);
return $this;
}
/**
* Adds a statement.
*
* @param Stmt|PhpParser\Builder $stmt The statement to add
*
* @return $this The builder instance (for fluid interface)
*/
public function addStmt($stmt) {
$stmt = BuilderHelpers::normalizeNode($stmt);
$targets = [
Stmt\TraitUse::class => &$this->uses,
Stmt\ClassConst::class => &$this->constants,
Stmt\Property::class => &$this->properties,
Stmt\ClassMethod::class => &$this->methods,
];
$class = \get_class($stmt);
if (!isset($targets[$class])) {
throw new \LogicException(sprintf('Unexpected node of type "%s"', $stmt->getType()));
}
$targets[$class][] = $stmt;
return $this;
}
/**
* Returns the built class node.
*
* @return Stmt\Class_ The built class node
*/
public function getNode() : PhpParser\Node {
return new Stmt\Class_($this->name, [
'flags' => $this->flags,
'extends' => $this->extends,
'implements' => $this->implements,
'stmts' => array_merge($this->uses, $this->constants, $this->properties, $this->methods),
], $this->attributes);
}
}

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<?php declare(strict_types=1);
namespace PhpParser\Builder;
use PhpParser;
use PhpParser\BuilderHelpers;
abstract class Declaration implements PhpParser\Builder
{
protected $attributes = [];
abstract public function addStmt($stmt);
/**
* Adds multiple statements.
*
* @param array $stmts The statements to add
*
* @return $this The builder instance (for fluid interface)
*/
public function addStmts(array $stmts) {
foreach ($stmts as $stmt) {
$this->addStmt($stmt);
}
return $this;
}
/**
* Sets doc comment for the declaration.
*
* @param PhpParser\Comment\Doc|string $docComment Doc comment to set
*
* @return $this The builder instance (for fluid interface)
*/
public function setDocComment($docComment) {
$this->attributes['comments'] = [
BuilderHelpers::normalizeDocComment($docComment)
];
return $this;
}
}

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vendor/nikic/php-parser/lib/PhpParser/Builder/FunctionLike.php vendored Normal file
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<?php declare(strict_types=1);
namespace PhpParser\Builder;
use PhpParser\BuilderHelpers;
use PhpParser\Node;
abstract class FunctionLike extends Declaration
{
protected $returnByRef = false;
protected $params = [];
/** @var string|Node\Name|Node\NullableType|null */
protected $returnType = null;
/**
* Make the function return by reference.
*
* @return $this The builder instance (for fluid interface)
*/
public function makeReturnByRef() {
$this->returnByRef = true;
return $this;
}
/**
* Adds a parameter.
*
* @param Node\Param|Param $param The parameter to add
*
* @return $this The builder instance (for fluid interface)
*/
public function addParam($param) {
$param = BuilderHelpers::normalizeNode($param);
if (!$param instanceof Node\Param) {
throw new \LogicException(sprintf('Expected parameter node, got "%s"', $param->getType()));
}
$this->params[] = $param;
return $this;
}
/**
* Adds multiple parameters.
*
* @param array $params The parameters to add
*
* @return $this The builder instance (for fluid interface)
*/
public function addParams(array $params) {
foreach ($params as $param) {
$this->addParam($param);
}
return $this;
}
/**
* Sets the return type for PHP 7.
*
* @param string|Node\Name|Node\NullableType $type One of array, callable, string, int, float,
* bool, iterable, or a class/interface name.
*
* @return $this The builder instance (for fluid interface)
*/
public function setReturnType($type) {
$this->returnType = BuilderHelpers::normalizeType($type);
return $this;
}
}

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<?php declare(strict_types=1);
namespace PhpParser\Builder;
use PhpParser;
use PhpParser\BuilderHelpers;
use PhpParser\Node;
use PhpParser\Node\Stmt;
class Function_ extends FunctionLike
{
protected $name;
protected $stmts = [];
/**
* Creates a function builder.
*
* @param string $name Name of the function
*/
public function __construct(string $name) {
$this->name = $name;
}
/**
* Adds a statement.
*
* @param Node|PhpParser\Builder $stmt The statement to add
*
* @return $this The builder instance (for fluid interface)
*/
public function addStmt($stmt) {
$this->stmts[] = BuilderHelpers::normalizeStmt($stmt);
return $this;
}
/**
* Returns the built function node.
*
* @return Stmt\Function_ The built function node
*/
public function getNode() : Node {
return new Stmt\Function_($this->name, [
'byRef' => $this->returnByRef,
'params' => $this->params,
'returnType' => $this->returnType,
'stmts' => $this->stmts,
], $this->attributes);
}
}

75
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<?php declare(strict_types=1);
namespace PhpParser\Builder;
use PhpParser;
use PhpParser\BuilderHelpers;
use PhpParser\Node\Name;
use PhpParser\Node\Stmt;
class Interface_ extends Declaration
{
protected $name;
protected $extends = [];
protected $constants = [];
protected $methods = [];
/**
* Creates an interface builder.
*
* @param string $name Name of the interface
*/
public function __construct(string $name) {
$this->name = $name;
}
/**
* Extends one or more interfaces.
*
* @param Name|string ...$interfaces Names of interfaces to extend
*
* @return $this The builder instance (for fluid interface)
*/
public function extend(...$interfaces) {
foreach ($interfaces as $interface) {
$this->extends[] = BuilderHelpers::normalizeName($interface);
}
return $this;
}
/**
* Adds a statement.
*
* @param Stmt|PhpParser\Builder $stmt The statement to add
*
* @return $this The builder instance (for fluid interface)
*/
public function addStmt($stmt) {
$stmt = BuilderHelpers::normalizeNode($stmt);
if ($stmt instanceof Stmt\ClassConst) {
$this->constants[] = $stmt;
} elseif ($stmt instanceof Stmt\ClassMethod) {
// we erase all statements in the body of an interface method
$stmt->stmts = null;
$this->methods[] = $stmt;
} else {
throw new \LogicException(sprintf('Unexpected node of type "%s"', $stmt->getType()));
}
return $this;
}
/**
* Returns the built interface node.
*
* @return Stmt\Interface_ The built interface node
*/
public function getNode() : PhpParser\Node {
return new Stmt\Interface_($this->name, [
'extends' => $this->extends,
'stmts' => array_merge($this->constants, $this->methods),
], $this->attributes);
}
}

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<?php declare(strict_types=1);
namespace PhpParser\Builder;
use PhpParser;
use PhpParser\BuilderHelpers;
use PhpParser\Node;
use PhpParser\Node\Stmt;
class Method extends FunctionLike
{
protected $name;
protected $flags = 0;
/** @var array|null */
protected $stmts = [];
/**
* Creates a method builder.
*
* @param string $name Name of the method
*/
public function __construct(string $name) {
$this->name = $name;
}
/**
* Makes the method public.
*
* @return $this The builder instance (for fluid interface)
*/
public function makePublic() {
$this->flags = BuilderHelpers::addModifier($this->flags, Stmt\Class_::MODIFIER_PUBLIC);
return $this;
}
/**
* Makes the method protected.
*
* @return $this The builder instance (for fluid interface)
*/
public function makeProtected() {
$this->flags = BuilderHelpers::addModifier($this->flags, Stmt\Class_::MODIFIER_PROTECTED);
return $this;
}
/**
* Makes the method private.
*
* @return $this The builder instance (for fluid interface)
*/
public function makePrivate() {
$this->flags = BuilderHelpers::addModifier($this->flags, Stmt\Class_::MODIFIER_PRIVATE);
return $this;
}
/**
* Makes the method static.
*
* @return $this The builder instance (for fluid interface)
*/
public function makeStatic() {
$this->flags = BuilderHelpers::addModifier($this->flags, Stmt\Class_::MODIFIER_STATIC);
return $this;
}
/**
* Makes the method abstract.
*
* @return $this The builder instance (for fluid interface)
*/
public function makeAbstract() {
if (!empty($this->stmts)) {
throw new \LogicException('Cannot make method with statements abstract');
}
$this->flags = BuilderHelpers::addModifier($this->flags, Stmt\Class_::MODIFIER_ABSTRACT);
$this->stmts = null; // abstract methods don't have statements
return $this;
}
/**
* Makes the method final.
*
* @return $this The builder instance (for fluid interface)
*/
public function makeFinal() {
$this->flags = BuilderHelpers::addModifier($this->flags, Stmt\Class_::MODIFIER_FINAL);
return $this;
}
/**
* Adds a statement.
*
* @param Node|PhpParser\Builder $stmt The statement to add
*
* @return $this The builder instance (for fluid interface)
*/
public function addStmt($stmt) {
if (null === $this->stmts) {
throw new \LogicException('Cannot add statements to an abstract method');
}
$this->stmts[] = BuilderHelpers::normalizeStmt($stmt);
return $this;
}
/**
* Returns the built method node.
*
* @return Stmt\ClassMethod The built method node
*/
public function getNode() : Node {
return new Stmt\ClassMethod($this->name, [
'flags' => $this->flags,
'byRef' => $this->returnByRef,
'params' => $this->params,
'returnType' => $this->returnType,
'stmts' => $this->stmts,
], $this->attributes);
}
}

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vendor/nikic/php-parser/lib/PhpParser/Builder/Namespace_.php vendored Normal file
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<?php declare(strict_types=1);
namespace PhpParser\Builder;
use PhpParser;
use PhpParser\BuilderHelpers;
use PhpParser\Node;
use PhpParser\Node\Stmt;
class Namespace_ extends Declaration
{
private $name;
private $stmts = [];
/**
* Creates a namespace builder.
*
* @param Node\Name|string|null $name Name of the namespace
*/
public function __construct($name) {
$this->name = null !== $name ? BuilderHelpers::normalizeName($name) : null;
}
/**
* Adds a statement.
*
* @param Node|PhpParser\Builder $stmt The statement to add
*
* @return $this The builder instance (for fluid interface)
*/
public function addStmt($stmt) {
$this->stmts[] = BuilderHelpers::normalizeStmt($stmt);
return $this;
}
/**
* Returns the built node.
*
* @return Node The built node
*/
public function getNode() : Node {
return new Stmt\Namespace_($this->name, $this->stmts, $this->attributes);
}
}

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<?php declare(strict_types=1);
namespace PhpParser\Builder;
use PhpParser;
use PhpParser\BuilderHelpers;
use PhpParser\Node;
class Param implements PhpParser\Builder
{
protected $name;
protected $default = null;
/** @var string|Node\Name|Node\NullableType|null */
protected $type = null;
protected $byRef = false;
protected $variadic = false;
/**
* Creates a parameter builder.
*
* @param string $name Name of the parameter
*/
public function __construct(string $name) {
$this->name = $name;
}
/**
* Sets default value for the parameter.
*
* @param mixed $value Default value to use
*
* @return $this The builder instance (for fluid interface)
*/
public function setDefault($value) {
$this->default = BuilderHelpers::normalizeValue($value);
return $this;
}
/**
* Sets type for the parameter.
*
* @param string|Node\Name|Node\NullableType $type Parameter type
*
* @return $this The builder instance (for fluid interface)
*/
public function setType($type) {
$this->type = BuilderHelpers::normalizeType($type);
if ($this->type == 'void') {
throw new \LogicException('Parameter type cannot be void');
}
return $this;
}
/**
* Sets type for the parameter.
*
* @param string|Node\Name|Node\NullableType $type Parameter type
*
* @return $this The builder instance (for fluid interface)
*
* @deprecated Use setType() instead
*/
public function setTypeHint($type) {
return $this->setType($type);
}
/**
* Make the parameter accept the value by reference.
*
* @return $this The builder instance (for fluid interface)
*/
public function makeByRef() {
$this->byRef = true;
return $this;
}
/**
* Make the parameter variadic
*
* @return $this The builder instance (for fluid interface)
*/
public function makeVariadic() {
$this->variadic = true;
return $this;
}
/**
* Returns the built parameter node.
*
* @return Node\Param The built parameter node
*/
public function getNode() : Node {
return new Node\Param(
new Node\Expr\Variable($this->name),
$this->default, $this->type, $this->byRef, $this->variadic
);
}
}

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<?php declare(strict_types=1);
namespace PhpParser\Builder;
use PhpParser;
use PhpParser\BuilderHelpers;
use PhpParser\Node\Identifier;
use PhpParser\Node\Name;
use PhpParser\Node\NullableType;
use PhpParser\Node\Stmt;
class Property implements PhpParser\Builder
{
protected $name;
protected $flags = 0;
protected $default = null;
protected $attributes = [];
/** @var null|Identifier|Name|NullableType */
protected $type;
/**
* Creates a property builder.
*
* @param string $name Name of the property
*/
public function __construct(string $name) {
$this->name = $name;
}
/**
* Makes the property public.
*
* @return $this The builder instance (for fluid interface)
*/
public function makePublic() {
$this->flags = BuilderHelpers::addModifier($this->flags, Stmt\Class_::MODIFIER_PUBLIC);
return $this;
}
/**
* Makes the property protected.
*
* @return $this The builder instance (for fluid interface)
*/
public function makeProtected() {
$this->flags = BuilderHelpers::addModifier($this->flags, Stmt\Class_::MODIFIER_PROTECTED);
return $this;
}
/**
* Makes the property private.
*
* @return $this The builder instance (for fluid interface)
*/
public function makePrivate() {
$this->flags = BuilderHelpers::addModifier($this->flags, Stmt\Class_::MODIFIER_PRIVATE);
return $this;
}
/**
* Makes the property static.
*
* @return $this The builder instance (for fluid interface)
*/
public function makeStatic() {
$this->flags = BuilderHelpers::addModifier($this->flags, Stmt\Class_::MODIFIER_STATIC);
return $this;
}
/**
* Sets default value for the property.
*
* @param mixed $value Default value to use
*
* @return $this The builder instance (for fluid interface)
*/
public function setDefault($value) {
$this->default = BuilderHelpers::normalizeValue($value);
return $this;
}
/**
* Sets doc comment for the property.
*
* @param PhpParser\Comment\Doc|string $docComment Doc comment to set
*
* @return $this The builder instance (for fluid interface)
*/
public function setDocComment($docComment) {
$this->attributes = [
'comments' => [BuilderHelpers::normalizeDocComment($docComment)]
];
return $this;
}
/**
* Sets the property type for PHP 7.4+.
*
* @param string|Name|NullableType|Identifier $type
*
* @return $this
*/
public function setType($type) {
$this->type = BuilderHelpers::normalizeType($type);
return $this;
}
/**
* Returns the built class node.
*
* @return Stmt\Property The built property node
*/
public function getNode() : PhpParser\Node {
return new Stmt\Property(
$this->flags !== 0 ? $this->flags : Stmt\Class_::MODIFIER_PUBLIC,
[
new Stmt\PropertyProperty($this->name, $this->default)
],
$this->attributes,
$this->type
);
}
}

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<?php declare(strict_types=1);
namespace PhpParser\Builder;
use PhpParser\Builder;
use PhpParser\BuilderHelpers;
use PhpParser\Node;
use PhpParser\Node\Stmt;
class TraitUse implements Builder
{
protected $traits = [];
protected $adaptations = [];
/**
* Creates a trait use builder.
*
* @param Node\Name|string ...$traits Names of used traits
*/
public function __construct(...$traits) {
foreach ($traits as $trait) {
$this->and($trait);
}
}
/**
* Adds used trait.
*
* @param Node\Name|string $trait Trait name
*
* @return $this The builder instance (for fluid interface)
*/
public function and($trait) {
$this->traits[] = BuilderHelpers::normalizeName($trait);
return $this;
}
/**
* Adds trait adaptation.
*
* @param Stmt\TraitUseAdaptation|Builder\TraitUseAdaptation $adaptation Trait adaptation
*
* @return $this The builder instance (for fluid interface)
*/
public function with($adaptation) {
$adaptation = BuilderHelpers::normalizeNode($adaptation);
if (!$adaptation instanceof Stmt\TraitUseAdaptation) {
throw new \LogicException('Adaptation must have type TraitUseAdaptation');
}
$this->adaptations[] = $adaptation;
return $this;
}
/**
* Returns the built node.
*
* @return Node The built node
*/
public function getNode() : Node {
return new Stmt\TraitUse($this->traits, $this->adaptations);
}
}

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<?php declare(strict_types=1);
namespace PhpParser\Builder;
use PhpParser\Builder;
use PhpParser\BuilderHelpers;
use PhpParser\Node;
use PhpParser\Node\Stmt;
class TraitUseAdaptation implements Builder
{
const TYPE_UNDEFINED = 0;
const TYPE_ALIAS = 1;
const TYPE_PRECEDENCE = 2;
/** @var int Type of building adaptation */
protected $type;
protected $trait;
protected $method;
protected $modifier = null;
protected $alias = null;
protected $insteadof = [];
/**
* Creates a trait use adaptation builder.
*
* @param Node\Name|string|null $trait Name of adaptated trait
* @param Node\Identifier|string $method Name of adaptated method
*/
public function __construct($trait, $method) {
$this->type = self::TYPE_UNDEFINED;
$this->trait = is_null($trait)? null: BuilderHelpers::normalizeName($trait);
$this->method = BuilderHelpers::normalizeIdentifier($method);
}
/**
* Sets alias of method.
*
* @param Node\Identifier|string $alias Alias for adaptated method
*
* @return $this The builder instance (for fluid interface)
*/
public function as($alias) {
if ($this->type === self::TYPE_UNDEFINED) {
$this->type = self::TYPE_ALIAS;
}
if ($this->type !== self::TYPE_ALIAS) {
throw new \LogicException('Cannot set alias for not alias adaptation buider');
}
$this->alias = $alias;
return $this;
}
/**
* Sets adaptated method public.
*
* @return $this The builder instance (for fluid interface)
*/
public function makePublic() {
$this->setModifier(Stmt\Class_::MODIFIER_PUBLIC);
return $this;
}
/**
* Sets adaptated method protected.
*
* @return $this The builder instance (for fluid interface)
*/
public function makeProtected() {
$this->setModifier(Stmt\Class_::MODIFIER_PROTECTED);
return $this;
}
/**
* Sets adaptated method private.
*
* @return $this The builder instance (for fluid interface)
*/
public function makePrivate() {
$this->setModifier(Stmt\Class_::MODIFIER_PRIVATE);
return $this;
}
/**
* Adds overwritten traits.
*
* @param Node\Name|string ...$traits Traits for overwrite
*
* @return $this The builder instance (for fluid interface)
*/
public function insteadof(...$traits) {
if ($this->type === self::TYPE_UNDEFINED) {
if (is_null($this->trait)) {
throw new \LogicException('Precedence adaptation must have trait');
}
$this->type = self::TYPE_PRECEDENCE;
}
if ($this->type !== self::TYPE_PRECEDENCE) {
throw new \LogicException('Cannot add overwritten traits for not precedence adaptation buider');
}
foreach ($traits as $trait) {
$this->insteadof[] = BuilderHelpers::normalizeName($trait);
}
return $this;
}
protected function setModifier(int $modifier) {
if ($this->type === self::TYPE_UNDEFINED) {
$this->type = self::TYPE_ALIAS;
}
if ($this->type !== self::TYPE_ALIAS) {
throw new \LogicException('Cannot set access modifier for not alias adaptation buider');
}
if (is_null($this->modifier)) {
$this->modifier = $modifier;
} else {
throw new \LogicException('Multiple access type modifiers are not allowed');
}
}
/**
* Returns the built node.
*
* @return Node The built node
*/
public function getNode() : Node {
switch ($this->type) {
case self::TYPE_ALIAS:
return new Stmt\TraitUseAdaptation\Alias($this->trait, $this->method, $this->modifier, $this->alias);
case self::TYPE_PRECEDENCE:
return new Stmt\TraitUseAdaptation\Precedence($this->trait, $this->method, $this->insteadof);
default:
throw new \LogicException('Type of adaptation is not defined');
}
}
}

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<?php declare(strict_types=1);
namespace PhpParser\Builder;
use PhpParser;
use PhpParser\BuilderHelpers;
use PhpParser\Node\Stmt;
class Trait_ extends Declaration
{
protected $name;
protected $uses = [];
protected $properties = [];
protected $methods = [];
/**
* Creates an interface builder.
*
* @param string $name Name of the interface
*/
public function __construct(string $name) {
$this->name = $name;
}
/**
* Adds a statement.
*
* @param Stmt|PhpParser\Builder $stmt The statement to add
*
* @return $this The builder instance (for fluid interface)
*/
public function addStmt($stmt) {
$stmt = BuilderHelpers::normalizeNode($stmt);
if ($stmt instanceof Stmt\Property) {
$this->properties[] = $stmt;
} elseif ($stmt instanceof Stmt\ClassMethod) {
$this->methods[] = $stmt;
} elseif ($stmt instanceof Stmt\TraitUse) {
$this->uses[] = $stmt;
} else {
throw new \LogicException(sprintf('Unexpected node of type "%s"', $stmt->getType()));
}
return $this;
}
/**
* Returns the built trait node.
*
* @return Stmt\Trait_ The built interface node
*/
public function getNode() : PhpParser\Node {
return new Stmt\Trait_(
$this->name, [
'stmts' => array_merge($this->uses, $this->properties, $this->methods)
], $this->attributes
);
}
}

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<?php declare(strict_types=1);
namespace PhpParser\Builder;
use PhpParser\Builder;
use PhpParser\BuilderHelpers;
use PhpParser\Node;
use PhpParser\Node\Stmt;
class Use_ implements Builder
{
protected $name;
protected $type;
protected $alias = null;
/**
* Creates a name use (alias) builder.
*
* @param Node\Name|string $name Name of the entity (namespace, class, function, constant) to alias
* @param int $type One of the Stmt\Use_::TYPE_* constants
*/
public function __construct($name, int $type) {
$this->name = BuilderHelpers::normalizeName($name);
$this->type = $type;
}
/**
* Sets alias for used name.
*
* @param string $alias Alias to use (last component of full name by default)
*
* @return $this The builder instance (for fluid interface)
*/
public function as(string $alias) {
$this->alias = $alias;
return $this;
}
/**
* Returns the built node.
*
* @return Node The built node
*/
public function getNode() : Node {
return new Stmt\Use_([
new Stmt\UseUse($this->name, $this->alias)
], $this->type);
}
}

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<?php declare(strict_types=1);
namespace PhpParser;
use PhpParser\Node\Arg;
use PhpParser\Node\Expr;
use PhpParser\Node\Expr\BinaryOp\Concat;
use PhpParser\Node\Identifier;
use PhpParser\Node\Name;
use PhpParser\Node\Scalar\String_;
use PhpParser\Node\Stmt\Use_;
class BuilderFactory
{
/**
* Creates a namespace builder.
*
* @param null|string|Node\Name $name Name of the namespace
*
* @return Builder\Namespace_ The created namespace builder
*/
public function namespace($name) : Builder\Namespace_ {
return new Builder\Namespace_($name);
}
/**
* Creates a class builder.
*
* @param string $name Name of the class
*
* @return Builder\Class_ The created class builder
*/
public function class(string $name) : Builder\Class_ {
return new Builder\Class_($name);
}
/**
* Creates an interface builder.
*
* @param string $name Name of the interface
*
* @return Builder\Interface_ The created interface builder
*/
public function interface(string $name) : Builder\Interface_ {
return new Builder\Interface_($name);
}
/**
* Creates a trait builder.
*
* @param string $name Name of the trait
*
* @return Builder\Trait_ The created trait builder
*/
public function trait(string $name) : Builder\Trait_ {
return new Builder\Trait_($name);
}
/**
* Creates a trait use builder.
*
* @param Node\Name|string ...$traits Trait names
*
* @return Builder\TraitUse The create trait use builder
*/
public function useTrait(...$traits) : Builder\TraitUse {
return new Builder\TraitUse(...$traits);
}
/**
* Creates a trait use adaptation builder.
*
* @param Node\Name|string|null $trait Trait name
* @param Node\Identifier|string $method Method name
*
* @return Builder\TraitUseAdaptation The create trait use adaptation builder
*/
public function traitUseAdaptation($trait, $method = null) : Builder\TraitUseAdaptation {
if ($method === null) {
$method = $trait;
$trait = null;
}
return new Builder\TraitUseAdaptation($trait, $method);
}
/**
* Creates a method builder.
*
* @param string $name Name of the method
*
* @return Builder\Method The created method builder
*/
public function method(string $name) : Builder\Method {
return new Builder\Method($name);
}
/**
* Creates a parameter builder.
*
* @param string $name Name of the parameter
*
* @return Builder\Param The created parameter builder
*/
public function param(string $name) : Builder\Param {
return new Builder\Param($name);
}
/**
* Creates a property builder.
*
* @param string $name Name of the property
*
* @return Builder\Property The created property builder
*/
public function property(string $name) : Builder\Property {
return new Builder\Property($name);
}
/**
* Creates a function builder.
*
* @param string $name Name of the function
*
* @return Builder\Function_ The created function builder
*/
public function function(string $name) : Builder\Function_ {
return new Builder\Function_($name);
}
/**
* Creates a namespace/class use builder.
*
* @param Node\Name|string $name Name of the entity (namespace or class) to alias
*
* @return Builder\Use_ The created use builder
*/
public function use($name) : Builder\Use_ {
return new Builder\Use_($name, Use_::TYPE_NORMAL);
}
/**
* Creates a function use builder.
*
* @param Node\Name|string $name Name of the function to alias
*
* @return Builder\Use_ The created use function builder
*/
public function useFunction($name) : Builder\Use_ {
return new Builder\Use_($name, Use_::TYPE_FUNCTION);
}
/**
* Creates a constant use builder.
*
* @param Node\Name|string $name Name of the const to alias
*
* @return Builder\Use_ The created use const builder
*/
public function useConst($name) : Builder\Use_ {
return new Builder\Use_($name, Use_::TYPE_CONSTANT);
}
/**
* Creates node a for a literal value.
*
* @param Expr|bool|null|int|float|string|array $value $value
*
* @return Expr
*/
public function val($value) : Expr {
return BuilderHelpers::normalizeValue($value);
}
/**
* Creates variable node.
*
* @param string|Expr $name Name
*
* @return Expr\Variable
*/
public function var($name) : Expr\Variable {
if (!\is_string($name) && !$name instanceof Expr) {
throw new \LogicException('Variable name must be string or Expr');
}
return new Expr\Variable($name);
}
/**
* Normalizes an argument list.
*
* Creates Arg nodes for all arguments and converts literal values to expressions.
*
* @param array $args List of arguments to normalize
*
* @return Arg[]
*/
public function args(array $args) : array {
$normalizedArgs = [];
foreach ($args as $arg) {
if ($arg instanceof Arg) {
$normalizedArgs[] = $arg;
} else {
$normalizedArgs[] = new Arg(BuilderHelpers::normalizeValue($arg));
}
}
return $normalizedArgs;
}
/**
* Creates a function call node.
*
* @param string|Name|Expr $name Function name
* @param array $args Function arguments
*
* @return Expr\FuncCall
*/
public function funcCall($name, array $args = []) : Expr\FuncCall {
return new Expr\FuncCall(
BuilderHelpers::normalizeNameOrExpr($name),
$this->args($args)
);
}
/**
* Creates a method call node.
*
* @param Expr $var Variable the method is called on
* @param string|Identifier|Expr $name Method name
* @param array $args Method arguments
*
* @return Expr\MethodCall
*/
public function methodCall(Expr $var, $name, array $args = []) : Expr\MethodCall {
return new Expr\MethodCall(
$var,
BuilderHelpers::normalizeIdentifierOrExpr($name),
$this->args($args)
);
}
/**
* Creates a static method call node.
*
* @param string|Name|Expr $class Class name
* @param string|Identifier|Expr $name Method name
* @param array $args Method arguments
*
* @return Expr\StaticCall
*/
public function staticCall($class, $name, array $args = []) : Expr\StaticCall {
return new Expr\StaticCall(
BuilderHelpers::normalizeNameOrExpr($class),
BuilderHelpers::normalizeIdentifierOrExpr($name),
$this->args($args)
);
}
/**
* Creates an object creation node.
*
* @param string|Name|Expr $class Class name
* @param array $args Constructor arguments
*
* @return Expr\New_
*/
public function new($class, array $args = []) : Expr\New_ {
return new Expr\New_(
BuilderHelpers::normalizeNameOrExpr($class),
$this->args($args)
);
}
/**
* Creates a constant fetch node.
*
* @param string|Name $name Constant name
*
* @return Expr\ConstFetch
*/
public function constFetch($name) : Expr\ConstFetch {
return new Expr\ConstFetch(BuilderHelpers::normalizeName($name));
}
/**
* Creates a property fetch node.
*
* @param Expr $var Variable holding object
* @param string|Identifier|Expr $name Property name
*
* @return Expr\PropertyFetch
*/
public function propertyFetch(Expr $var, $name) : Expr\PropertyFetch {
return new Expr\PropertyFetch($var, BuilderHelpers::normalizeIdentifierOrExpr($name));
}
/**
* Creates a class constant fetch node.
*
* @param string|Name|Expr $class Class name
* @param string|Identifier $name Constant name
*
* @return Expr\ClassConstFetch
*/
public function classConstFetch($class, $name): Expr\ClassConstFetch {
return new Expr\ClassConstFetch(
BuilderHelpers::normalizeNameOrExpr($class),
BuilderHelpers::normalizeIdentifier($name)
);
}
/**
* Creates nested Concat nodes from a list of expressions.
*
* @param Expr|string ...$exprs Expressions or literal strings
*
* @return Concat
*/
public function concat(...$exprs) : Concat {
$numExprs = count($exprs);
if ($numExprs < 2) {
throw new \LogicException('Expected at least two expressions');
}
$lastConcat = $this->normalizeStringExpr($exprs[0]);
for ($i = 1; $i < $numExprs; $i++) {
$lastConcat = new Concat($lastConcat, $this->normalizeStringExpr($exprs[$i]));
}
return $lastConcat;
}
/**
* @param string|Expr $expr
* @return Expr
*/
private function normalizeStringExpr($expr) : Expr {
if ($expr instanceof Expr) {
return $expr;
}
if (\is_string($expr)) {
return new String_($expr);
}
throw new \LogicException('Expected string or Expr');
}
}

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<?php declare(strict_types=1);
namespace PhpParser;
use PhpParser\Node\Expr;
use PhpParser\Node\Identifier;
use PhpParser\Node\Name;
use PhpParser\Node\NullableType;
use PhpParser\Node\Scalar;
use PhpParser\Node\Stmt;
/**
* This class defines helpers used in the implementation of builders. Don't use it directly.
*
* @internal
*/
final class BuilderHelpers
{
/**
* Normalizes a node: Converts builder objects to nodes.
*
* @param Node|Builder $node The node to normalize
*
* @return Node The normalized node
*/
public static function normalizeNode($node) : Node {
if ($node instanceof Builder) {
return $node->getNode();
} elseif ($node instanceof Node) {
return $node;
}
throw new \LogicException('Expected node or builder object');
}
/**
* Normalizes a node to a statement.
*
* Expressions are wrapped in a Stmt\Expression node.
*
* @param Node|Builder $node The node to normalize
*
* @return Stmt The normalized statement node
*/
public static function normalizeStmt($node) : Stmt {
$node = self::normalizeNode($node);
if ($node instanceof Stmt) {
return $node;
}
if ($node instanceof Expr) {
return new Stmt\Expression($node);
}
throw new \LogicException('Expected statement or expression node');
}
/**
* Normalizes strings to Identifier.
*
* @param string|Identifier $name The identifier to normalize
*
* @return Identifier The normalized identifier
*/
public static function normalizeIdentifier($name) : Identifier {
if ($name instanceof Identifier) {
return $name;
}
if (\is_string($name)) {
return new Identifier($name);
}
throw new \LogicException('Expected string or instance of Node\Identifier');
}
/**
* Normalizes strings to Identifier, also allowing expressions.
*
* @param string|Identifier|Expr $name The identifier to normalize
*
* @return Identifier|Expr The normalized identifier or expression
*/
public static function normalizeIdentifierOrExpr($name) {
if ($name instanceof Identifier || $name instanceof Expr) {
return $name;
}
if (\is_string($name)) {
return new Identifier($name);
}
throw new \LogicException('Expected string or instance of Node\Identifier or Node\Expr');
}
/**
* Normalizes a name: Converts string names to Name nodes.
*
* @param Name|string $name The name to normalize
*
* @return Name The normalized name
*/
public static function normalizeName($name) : Name {
return self::normalizeNameCommon($name, false);
}
/**
* Normalizes a name: Converts string names to Name nodes, while also allowing expressions.
*
* @param Expr|Name|string $name The name to normalize
*
* @return Name|Expr The normalized name or expression
*/
public static function normalizeNameOrExpr($name) {
return self::normalizeNameCommon($name, true);
}
/**
* Normalizes a name: Converts string names to Name nodes, optionally allowing expressions.
*
* @param Expr|Name|string $name The name to normalize
* @param bool $allowExpr Whether to also allow expressions
*
* @return Name|Expr The normalized name, or expression (if allowed)
*/
private static function normalizeNameCommon($name, bool $allowExpr) {
if ($name instanceof Name) {
return $name;
} elseif (is_string($name)) {
if (!$name) {
throw new \LogicException('Name cannot be empty');
}
if ($name[0] === '\\') {
return new Name\FullyQualified(substr($name, 1));
} elseif (0 === strpos($name, 'namespace\\')) {
return new Name\Relative(substr($name, strlen('namespace\\')));
} else {
return new Name($name);
}
}
if ($allowExpr) {
if ($name instanceof Expr) {
return $name;
}
throw new \LogicException(
'Name must be a string or an instance of Node\Name or Node\Expr'
);
} else {
throw new \LogicException('Name must be a string or an instance of Node\Name');
}
}
/**
* Normalizes a type: Converts plain-text type names into proper AST representation.
*
* In particular, builtin types become Identifiers, custom types become Names and nullables
* are wrapped in NullableType nodes.
*
* @param string|Name|Identifier|NullableType $type The type to normalize
*
* @return Name|Identifier|NullableType The normalized type
*/
public static function normalizeType($type) {
if (!is_string($type)) {
if (!$type instanceof Name && !$type instanceof Identifier
&& !$type instanceof NullableType) {
throw new \LogicException(
'Type must be a string, or an instance of Name, Identifier or NullableType');
}
return $type;
}
$nullable = false;
if (strlen($type) > 0 && $type[0] === '?') {
$nullable = true;
$type = substr($type, 1);
}
$builtinTypes = [
'array', 'callable', 'string', 'int', 'float', 'bool', 'iterable', 'void', 'object'
];
$lowerType = strtolower($type);
if (in_array($lowerType, $builtinTypes)) {
$type = new Identifier($lowerType);
} else {
$type = self::normalizeName($type);
}
if ($nullable && (string) $type === 'void') {
throw new \LogicException('void type cannot be nullable');
}
return $nullable ? new Node\NullableType($type) : $type;
}
/**
* Normalizes a value: Converts nulls, booleans, integers,
* floats, strings and arrays into their respective nodes
*
* @param Node\Expr|bool|null|int|float|string|array $value The value to normalize
*
* @return Expr The normalized value
*/
public static function normalizeValue($value) : Expr {
if ($value instanceof Node\Expr) {
return $value;
} elseif (is_null($value)) {
return new Expr\ConstFetch(
new Name('null')
);
} elseif (is_bool($value)) {
return new Expr\ConstFetch(
new Name($value ? 'true' : 'false')
);
} elseif (is_int($value)) {
return new Scalar\LNumber($value);
} elseif (is_float($value)) {
return new Scalar\DNumber($value);
} elseif (is_string($value)) {
return new Scalar\String_($value);
} elseif (is_array($value)) {
$items = [];
$lastKey = -1;
foreach ($value as $itemKey => $itemValue) {
// for consecutive, numeric keys don't generate keys
if (null !== $lastKey && ++$lastKey === $itemKey) {
$items[] = new Expr\ArrayItem(
self::normalizeValue($itemValue)
);
} else {
$lastKey = null;
$items[] = new Expr\ArrayItem(
self::normalizeValue($itemValue),
self::normalizeValue($itemKey)
);
}
}
return new Expr\Array_($items);
} else {
throw new \LogicException('Invalid value');
}
}
/**
* Normalizes a doc comment: Converts plain strings to PhpParser\Comment\Doc.
*
* @param Comment\Doc|string $docComment The doc comment to normalize
*
* @return Comment\Doc The normalized doc comment
*/
public static function normalizeDocComment($docComment) : Comment\Doc {
if ($docComment instanceof Comment\Doc) {
return $docComment;
} elseif (is_string($docComment)) {
return new Comment\Doc($docComment);
} else {
throw new \LogicException('Doc comment must be a string or an instance of PhpParser\Comment\Doc');
}
}
/**
* Adds a modifier and returns new modifier bitmask.
*
* @param int $modifiers Existing modifiers
* @param int $modifier Modifier to set
*
* @return int New modifiers
*/
public static function addModifier(int $modifiers, int $modifier) : int {
Stmt\Class_::verifyModifier($modifiers, $modifier);
return $modifiers | $modifier;
}
}

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<?php declare(strict_types=1);
namespace PhpParser;
class Comment implements \JsonSerializable
{
protected $text;
protected $line;
protected $filePos;
protected $tokenPos;
/**
* Constructs a comment node.
*
* @param string $text Comment text (including comment delimiters like /*)
* @param int $startLine Line number the comment started on
* @param int $startFilePos File offset the comment started on
* @param int $startTokenPos Token offset the comment started on
*/
public function __construct(
string $text, int $startLine = -1, int $startFilePos = -1, int $startTokenPos = -1
) {
$this->text = $text;
$this->line = $startLine;
$this->filePos = $startFilePos;
$this->tokenPos = $startTokenPos;
}
/**
* Gets the comment text.
*
* @return string The comment text (including comment delimiters like /*)
*/
public function getText() : string {
return $this->text;
}
/**
* Gets the line number the comment started on.
*
* @return int Line number
*/
public function getLine() : int {
return $this->line;
}
/**
* Gets the file offset the comment started on.
*
* @return int File offset
*/
public function getFilePos() : int {
return $this->filePos;
}
/**
* Gets the token offset the comment started on.
*
* @return int Token offset
*/
public function getTokenPos() : int {
return $this->tokenPos;
}
/**
* Gets the comment text.
*
* @return string The comment text (including comment delimiters like /*)
*/
public function __toString() : string {
return $this->text;
}
/**
* Gets the reformatted comment text.
*
* "Reformatted" here means that we try to clean up the whitespace at the
* starts of the lines. This is necessary because we receive the comments
* without trailing whitespace on the first line, but with trailing whitespace
* on all subsequent lines.
*
* @return mixed|string
*/
public function getReformattedText() {
$text = trim($this->text);
$newlinePos = strpos($text, "\n");
if (false === $newlinePos) {
// Single line comments don't need further processing
return $text;
} elseif (preg_match('((*BSR_ANYCRLF)(*ANYCRLF)^.*(?:\R\s+\*.*)+$)', $text)) {
// Multi line comment of the type
//
// /*
// * Some text.
// * Some more text.
// */
//
// is handled by replacing the whitespace sequences before the * by a single space
return preg_replace('(^\s+\*)m', ' *', $this->text);
} elseif (preg_match('(^/\*\*?\s*[\r\n])', $text) && preg_match('(\n(\s*)\*/$)', $text, $matches)) {
// Multi line comment of the type
//
// /*
// Some text.
// Some more text.
// */
//
// is handled by removing the whitespace sequence on the line before the closing
// */ on all lines. So if the last line is " */", then " " is removed at the
// start of all lines.
return preg_replace('(^' . preg_quote($matches[1]) . ')m', '', $text);
} elseif (preg_match('(^/\*\*?\s*(?!\s))', $text, $matches)) {
// Multi line comment of the type
//
// /* Some text.
// Some more text.
// Indented text.
// Even more text. */
//
// is handled by removing the difference between the shortest whitespace prefix on all
// lines and the length of the "/* " opening sequence.
$prefixLen = $this->getShortestWhitespacePrefixLen(substr($text, $newlinePos + 1));
$removeLen = $prefixLen - strlen($matches[0]);
return preg_replace('(^\s{' . $removeLen . '})m', '', $text);
}
// No idea how to format this comment, so simply return as is
return $text;
}
/**
* Get length of shortest whitespace prefix (at the start of a line).
*
* If there is a line with no prefix whitespace, 0 is a valid return value.
*
* @param string $str String to check
* @return int Length in characters. Tabs count as single characters.
*/
private function getShortestWhitespacePrefixLen(string $str) : int {
$lines = explode("\n", $str);
$shortestPrefixLen = \INF;
foreach ($lines as $line) {
preg_match('(^\s*)', $line, $matches);
$prefixLen = strlen($matches[0]);
if ($prefixLen < $shortestPrefixLen) {
$shortestPrefixLen = $prefixLen;
}
}
return $shortestPrefixLen;
}
/**
* @return array
* @psalm-return array{nodeType:string, text:mixed, line:mixed, filePos:mixed}
*/
public function jsonSerialize() : array {
// Technically not a node, but we make it look like one anyway
$type = $this instanceof Comment\Doc ? 'Comment_Doc' : 'Comment';
return [
'nodeType' => $type,
'text' => $this->text,
'line' => $this->line,
'filePos' => $this->filePos,
'tokenPos' => $this->tokenPos,
];
}
}

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vendor/nikic/php-parser/lib/PhpParser/Comment/Doc.php vendored Normal file
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<?php declare(strict_types=1);
namespace PhpParser\Comment;
class Doc extends \PhpParser\Comment
{
}

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vendor/nikic/php-parser/lib/PhpParser/ConstExprEvaluationException.php vendored Normal file
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<?php
namespace PhpParser;
class ConstExprEvaluationException extends \Exception
{}

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<?php
namespace PhpParser;
use PhpParser\Node\Expr;
use PhpParser\Node\Scalar;
/**
* Evaluates constant expressions.
*
* This evaluator is able to evaluate all constant expressions (as defined by PHP), which can be
* evaluated without further context. If a subexpression is not of this type, a user-provided
* fallback evaluator is invoked. To support all constant expressions that are also supported by
* PHP (and not already handled by this class), the fallback evaluator must be able to handle the
* following node types:
*
* * All Scalar\MagicConst\* nodes.
* * Expr\ConstFetch nodes. Only null/false/true are already handled by this class.
* * Expr\ClassConstFetch nodes.
*
* The fallback evaluator should throw ConstExprEvaluationException for nodes it cannot evaluate.
*
* The evaluation is dependent on runtime configuration in two respects: Firstly, floating
* point to string conversions are affected by the precision ini setting. Secondly, they are also
* affected by the LC_NUMERIC locale.
*/
class ConstExprEvaluator
{
private $fallbackEvaluator;
/**
* Create a constant expression evaluator.
*
* The provided fallback evaluator is invoked whenever a subexpression cannot be evaluated. See
* class doc comment for more information.
*
* @param callable|null $fallbackEvaluator To call if subexpression cannot be evaluated
*/
public function __construct(callable $fallbackEvaluator = null) {
$this->fallbackEvaluator = $fallbackEvaluator ?? function(Expr $expr) {
throw new ConstExprEvaluationException(
"Expression of type {$expr->getType()} cannot be evaluated"
);
};
}
/**
* Silently evaluates a constant expression into a PHP value.
*
* Thrown Errors, warnings or notices will be converted into a ConstExprEvaluationException.
* The original source of the exception is available through getPrevious().
*
* If some part of the expression cannot be evaluated, the fallback evaluator passed to the
* constructor will be invoked. By default, if no fallback is provided, an exception of type
* ConstExprEvaluationException is thrown.
*
* See class doc comment for caveats and limitations.
*
* @param Expr $expr Constant expression to evaluate
* @return mixed Result of evaluation
*
* @throws ConstExprEvaluationException if the expression cannot be evaluated or an error occurred
*/
public function evaluateSilently(Expr $expr) {
set_error_handler(function($num, $str, $file, $line) {
throw new \ErrorException($str, 0, $num, $file, $line);
});
try {
return $this->evaluate($expr);
} catch (\Throwable $e) {
if (!$e instanceof ConstExprEvaluationException) {
$e = new ConstExprEvaluationException(
"An error occurred during constant expression evaluation", 0, $e);
}
throw $e;
} finally {
restore_error_handler();
}
}
/**
* Directly evaluates a constant expression into a PHP value.
*
* May generate Error exceptions, warnings or notices. Use evaluateSilently() to convert these
* into a ConstExprEvaluationException.
*
* If some part of the expression cannot be evaluated, the fallback evaluator passed to the
* constructor will be invoked. By default, if no fallback is provided, an exception of type
* ConstExprEvaluationException is thrown.
*
* See class doc comment for caveats and limitations.
*
* @param Expr $expr Constant expression to evaluate
* @return mixed Result of evaluation
*
* @throws ConstExprEvaluationException if the expression cannot be evaluated
*/
public function evaluateDirectly(Expr $expr) {
return $this->evaluate($expr);
}
private function evaluate(Expr $expr) {
if ($expr instanceof Scalar\LNumber
|| $expr instanceof Scalar\DNumber
|| $expr instanceof Scalar\String_
) {
return $expr->value;
}
if ($expr instanceof Expr\Array_) {
return $this->evaluateArray($expr);
}
// Unary operators
if ($expr instanceof Expr\UnaryPlus) {
return +$this->evaluate($expr->expr);
}
if ($expr instanceof Expr\UnaryMinus) {
return -$this->evaluate($expr->expr);
}
if ($expr instanceof Expr\BooleanNot) {
return !$this->evaluate($expr->expr);
}
if ($expr instanceof Expr\BitwiseNot) {
return ~$this->evaluate($expr->expr);
}
if ($expr instanceof Expr\BinaryOp) {
return $this->evaluateBinaryOp($expr);
}
if ($expr instanceof Expr\Ternary) {
return $this->evaluateTernary($expr);
}
if ($expr instanceof Expr\ArrayDimFetch && null !== $expr->dim) {
return $this->evaluate($expr->var)[$this->evaluate($expr->dim)];
}
if ($expr instanceof Expr\ConstFetch) {
return $this->evaluateConstFetch($expr);
}
return ($this->fallbackEvaluator)($expr);
}
private function evaluateArray(Expr\Array_ $expr) {
$array = [];
foreach ($expr->items as $item) {
if (null !== $item->key) {
$array[$this->evaluate($item->key)] = $this->evaluate($item->value);
} else {
$array[] = $this->evaluate($item->value);
}
}
return $array;
}
private function evaluateTernary(Expr\Ternary $expr) {
if (null === $expr->if) {
return $this->evaluate($expr->cond) ?: $this->evaluate($expr->else);
}
return $this->evaluate($expr->cond)
? $this->evaluate($expr->if)
: $this->evaluate($expr->else);
}
private function evaluateBinaryOp(Expr\BinaryOp $expr) {
if ($expr instanceof Expr\BinaryOp\Coalesce
&& $expr->left instanceof Expr\ArrayDimFetch
) {
// This needs to be special cased to respect BP_VAR_IS fetch semantics
return $this->evaluate($expr->left->var)[$this->evaluate($expr->left->dim)]
?? $this->evaluate($expr->right);
}
// The evaluate() calls are repeated in each branch, because some of the operators are
// short-circuiting and evaluating the RHS in advance may be illegal in that case
$l = $expr->left;
$r = $expr->right;
switch ($expr->getOperatorSigil()) {
case '&': return $this->evaluate($l) & $this->evaluate($r);
case '|': return $this->evaluate($l) | $this->evaluate($r);
case '^': return $this->evaluate($l) ^ $this->evaluate($r);
case '&&': return $this->evaluate($l) && $this->evaluate($r);
case '||': return $this->evaluate($l) || $this->evaluate($r);
case '??': return $this->evaluate($l) ?? $this->evaluate($r);
case '.': return $this->evaluate($l) . $this->evaluate($r);
case '/': return $this->evaluate($l) / $this->evaluate($r);
case '==': return $this->evaluate($l) == $this->evaluate($r);
case '>': return $this->evaluate($l) > $this->evaluate($r);
case '>=': return $this->evaluate($l) >= $this->evaluate($r);
case '===': return $this->evaluate($l) === $this->evaluate($r);
case 'and': return $this->evaluate($l) and $this->evaluate($r);
case 'or': return $this->evaluate($l) or $this->evaluate($r);
case 'xor': return $this->evaluate($l) xor $this->evaluate($r);
case '-': return $this->evaluate($l) - $this->evaluate($r);
case '%': return $this->evaluate($l) % $this->evaluate($r);
case '*': return $this->evaluate($l) * $this->evaluate($r);
case '!=': return $this->evaluate($l) != $this->evaluate($r);
case '!==': return $this->evaluate($l) !== $this->evaluate($r);
case '+': return $this->evaluate($l) + $this->evaluate($r);
case '**': return $this->evaluate($l) ** $this->evaluate($r);
case '<<': return $this->evaluate($l) << $this->evaluate($r);
case '>>': return $this->evaluate($l) >> $this->evaluate($r);
case '<': return $this->evaluate($l) < $this->evaluate($r);
case '<=': return $this->evaluate($l) <= $this->evaluate($r);
case '<=>': return $this->evaluate($l) <=> $this->evaluate($r);
}
throw new \Exception('Should not happen');
}
private function evaluateConstFetch(Expr\ConstFetch $expr) {
$name = $expr->name->toLowerString();
switch ($name) {
case 'null': return null;
case 'false': return false;
case 'true': return true;
}
return ($this->fallbackEvaluator)($expr);
}
}

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<?php declare(strict_types=1);
namespace PhpParser;
class Error extends \RuntimeException
{
protected $rawMessage;
protected $attributes;
/**
* Creates an Exception signifying a parse error.
*
* @param string $message Error message
* @param array|int $attributes Attributes of node/token where error occurred
* (or start line of error -- deprecated)
*/
public function __construct(string $message, $attributes = []) {
$this->rawMessage = $message;
if (is_array($attributes)) {
$this->attributes = $attributes;
} else {
$this->attributes = ['startLine' => $attributes];
}
$this->updateMessage();
}
/**
* Gets the error message
*
* @return string Error message
*/
public function getRawMessage() : string {
return $this->rawMessage;
}
/**
* Gets the line the error starts in.
*
* @return int Error start line
*/
public function getStartLine() : int {
return $this->attributes['startLine'] ?? -1;
}
/**
* Gets the line the error ends in.
*
* @return int Error end line
*/
public function getEndLine() : int {
return $this->attributes['endLine'] ?? -1;
}
/**
* Gets the attributes of the node/token the error occurred at.
*
* @return array
*/
public function getAttributes() : array {
return $this->attributes;
}
/**
* Sets the attributes of the node/token the error occurred at.
*
* @param array $attributes
*/
public function setAttributes(array $attributes) {
$this->attributes = $attributes;
$this->updateMessage();
}
/**
* Sets the line of the PHP file the error occurred in.
*
* @param string $message Error message
*/
public function setRawMessage(string $message) {
$this->rawMessage = $message;
$this->updateMessage();
}
/**
* Sets the line the error starts in.
*
* @param int $line Error start line
*/
public function setStartLine(int $line) {
$this->attributes['startLine'] = $line;
$this->updateMessage();
}
/**
* Returns whether the error has start and end column information.
*
* For column information enable the startFilePos and endFilePos in the lexer options.
*
* @return bool
*/
public function hasColumnInfo() : bool {
return isset($this->attributes['startFilePos'], $this->attributes['endFilePos']);
}
/**
* Gets the start column (1-based) into the line where the error started.
*
* @param string $code Source code of the file
* @return int
*/
public function getStartColumn(string $code) : int {
if (!$this->hasColumnInfo()) {
throw new \RuntimeException('Error does not have column information');
}
return $this->toColumn($code, $this->attributes['startFilePos']);
}
/**
* Gets the end column (1-based) into the line where the error ended.
*
* @param string $code Source code of the file
* @return int
*/
public function getEndColumn(string $code) : int {
if (!$this->hasColumnInfo()) {
throw new \RuntimeException('Error does not have column information');
}
return $this->toColumn($code, $this->attributes['endFilePos']);
}
/**
* Formats message including line and column information.
*
* @param string $code Source code associated with the error, for calculation of the columns
*
* @return string Formatted message
*/
public function getMessageWithColumnInfo(string $code) : string {
return sprintf(
'%s from %d:%d to %d:%d', $this->getRawMessage(),
$this->getStartLine(), $this->getStartColumn($code),
$this->getEndLine(), $this->getEndColumn($code)
);
}
/**
* Converts a file offset into a column.
*
* @param string $code Source code that $pos indexes into
* @param int $pos 0-based position in $code
*
* @return int 1-based column (relative to start of line)
*/
private function toColumn(string $code, int $pos) : int {
if ($pos > strlen($code)) {
throw new \RuntimeException('Invalid position information');
}
$lineStartPos = strrpos($code, "\n", $pos - strlen($code));
if (false === $lineStartPos) {
$lineStartPos = -1;
}
return $pos - $lineStartPos;
}
/**
* Updates the exception message after a change to rawMessage or rawLine.
*/
protected function updateMessage() {
$this->message = $this->rawMessage;
if (-1 === $this->getStartLine()) {
$this->message .= ' on unknown line';
} else {
$this->message .= ' on line ' . $this->getStartLine();
}
}
}

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vendor/nikic/php-parser/lib/PhpParser/ErrorHandler.php vendored Normal file
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<?php declare(strict_types=1);
namespace PhpParser;
interface ErrorHandler
{
/**
* Handle an error generated during lexing, parsing or some other operation.
*
* @param Error $error The error that needs to be handled
*/
public function handleError(Error $error);
}

46
vendor/nikic/php-parser/lib/PhpParser/ErrorHandler/Collecting.php vendored Normal file
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<?php declare(strict_types=1);
namespace PhpParser\ErrorHandler;
use PhpParser\Error;
use PhpParser\ErrorHandler;
/**
* Error handler that collects all errors into an array.
*
* This allows graceful handling of errors.
*/
class Collecting implements ErrorHandler
{
/** @var Error[] Collected errors */
private $errors = [];
public function handleError(Error $error) {
$this->errors[] = $error;
}
/**
* Get collected errors.
*
* @return Error[]
*/
public function getErrors() : array {
return $this->errors;
}
/**
* Check whether there are any errors.
*
* @return bool
*/
public function hasErrors() : bool {
return !empty($this->errors);
}
/**
* Reset/clear collected errors.
*/
public function clearErrors() {
$this->errors = [];
}
}

18
vendor/nikic/php-parser/lib/PhpParser/ErrorHandler/Throwing.php vendored Normal file
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<?php declare(strict_types=1);
namespace PhpParser\ErrorHandler;
use PhpParser\Error;
use PhpParser\ErrorHandler;
/**
* Error handler that handles all errors by throwing them.
*
* This is the default strategy used by all components.
*/
class Throwing implements ErrorHandler
{
public function handleError(Error $error) {
throw $error;
}
}

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vendor/nikic/php-parser/lib/PhpParser/Internal/DiffElem.php vendored Normal file
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<?php declare(strict_types=1);
namespace PhpParser\Internal;
/**
* @internal
*/
class DiffElem
{
const TYPE_KEEP = 0;
const TYPE_REMOVE = 1;
const TYPE_ADD = 2;
const TYPE_REPLACE = 3;
/** @var int One of the TYPE_* constants */
public $type;
/** @var mixed Is null for add operations */
public $old;
/** @var mixed Is null for remove operations */
public $new;
public function __construct(int $type, $old, $new) {
$this->type = $type;
$this->old = $old;
$this->new = $new;
}
}

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vendor/nikic/php-parser/lib/PhpParser/Internal/Differ.php vendored Normal file
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<?php declare(strict_types=1);
namespace PhpParser\Internal;
/**
* Implements the Myers diff algorithm.
*
* Myers, Eugene W. "An O (ND) difference algorithm and its variations."
* Algorithmica 1.1 (1986): 251-266.
*
* @internal
*/
class Differ
{
private $isEqual;
/**
* Create differ over the given equality relation.
*
* @param callable $isEqual Equality relation with signature function($a, $b) : bool
*/
public function __construct(callable $isEqual) {
$this->isEqual = $isEqual;
}
/**
* Calculate diff (edit script) from $old to $new.
*
* @param array $old Original array
* @param array $new New array
*
* @return DiffElem[] Diff (edit script)
*/
public function diff(array $old, array $new) {
list($trace, $x, $y) = $this->calculateTrace($old, $new);
return $this->extractDiff($trace, $x, $y, $old, $new);
}
/**
* Calculate diff, including "replace" operations.
*
* If a sequence of remove operations is followed by the same number of add operations, these
* will be coalesced into replace operations.
*
* @param array $old Original array
* @param array $new New array
*
* @return DiffElem[] Diff (edit script), including replace operations
*/
public function diffWithReplacements(array $old, array $new) {
return $this->coalesceReplacements($this->diff($old, $new));
}
private function calculateTrace(array $a, array $b) {
$n = \count($a);
$m = \count($b);
$max = $n + $m;
$v = [1 => 0];
$trace = [];
for ($d = 0; $d <= $max; $d++) {
$trace[] = $v;
for ($k = -$d; $k <= $d; $k += 2) {
if ($k === -$d || ($k !== $d && $v[$k-1] < $v[$k+1])) {
$x = $v[$k+1];
} else {
$x = $v[$k-1] + 1;
}
$y = $x - $k;
while ($x < $n && $y < $m && ($this->isEqual)($a[$x], $b[$y])) {
$x++;
$y++;
}
$v[$k] = $x;
if ($x >= $n && $y >= $m) {
return [$trace, $x, $y];
}
}
}
throw new \Exception('Should not happen');
}
private function extractDiff(array $trace, int $x, int $y, array $a, array $b) {
$result = [];
for ($d = \count($trace) - 1; $d >= 0; $d--) {
$v = $trace[$d];
$k = $x - $y;
if ($k === -$d || ($k !== $d && $v[$k-1] < $v[$k+1])) {
$prevK = $k + 1;
} else {
$prevK = $k - 1;
}
$prevX = $v[$prevK];
$prevY = $prevX - $prevK;
while ($x > $prevX && $y > $prevY) {
$result[] = new DiffElem(DiffElem::TYPE_KEEP, $a[$x-1], $b[$y-1]);
$x--;
$y--;
}
if ($d === 0) {
break;
}
while ($x > $prevX) {
$result[] = new DiffElem(DiffElem::TYPE_REMOVE, $a[$x-1], null);
$x--;
}
while ($y > $prevY) {
$result[] = new DiffElem(DiffElem::TYPE_ADD, null, $b[$y-1]);
$y--;
}
}
return array_reverse($result);
}
/**
* Coalesce equal-length sequences of remove+add into a replace operation.
*
* @param DiffElem[] $diff
* @return DiffElem[]
*/
private function coalesceReplacements(array $diff) {
$newDiff = [];
$c = \count($diff);
for ($i = 0; $i < $c; $i++) {
$diffType = $diff[$i]->type;
if ($diffType !== DiffElem::TYPE_REMOVE) {
$newDiff[] = $diff[$i];
continue;
}
$j = $i;
while ($j < $c && $diff[$j]->type === DiffElem::TYPE_REMOVE) {
$j++;
}
$k = $j;
while ($k < $c && $diff[$k]->type === DiffElem::TYPE_ADD) {
$k++;
}
if ($j - $i === $k - $j) {
$len = $j - $i;
for ($n = 0; $n < $len; $n++) {
$newDiff[] = new DiffElem(
DiffElem::TYPE_REPLACE, $diff[$i + $n]->old, $diff[$j + $n]->new
);
}
} else {
for (; $i < $k; $i++) {
$newDiff[] = $diff[$i];
}
}
$i = $k - 1;
}
return $newDiff;
}
}

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vendor/nikic/php-parser/lib/PhpParser/Internal/PrintableNewAnonClassNode.php vendored Normal file
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<?php declare(strict_types=1);
namespace PhpParser\Internal;
use PhpParser\Node;
use PhpParser\Node\Expr;
/**
* This node is used internally by the format-preserving pretty printer to print anonymous classes.
*
* The normal anonymous class structure violates assumptions about the order of token offsets.
* Namely, the constructor arguments are part of the Expr\New_ node and follow the class node, even
* though they are actually interleaved with them. This special node type is used temporarily to
* restore a sane token offset order.
*
* @internal
*/
class PrintableNewAnonClassNode extends Expr
{
/** @var Node\Arg[] Arguments */
public $args;
/** @var null|Node\Name Name of extended class */
public $extends;
/** @var Node\Name[] Names of implemented interfaces */
public $implements;
/** @var Node\Stmt[] Statements */
public $stmts;
public function __construct(
array $args, Node\Name $extends = null, array $implements, array $stmts, array $attributes
) {
parent::__construct($attributes);
$this->args = $args;
$this->extends = $extends;
$this->implements = $implements;
$this->stmts = $stmts;
}
public static function fromNewNode(Expr\New_ $newNode) {
$class = $newNode->class;
assert($class instanceof Node\Stmt\Class_);
// We don't assert that $class->name is null here, to allow consumers to assign unique names
// to anonymous classes for their own purposes. We simplify ignore the name here.
return new self(
$newNode->args, $class->extends, $class->implements,
$class->stmts, $newNode->getAttributes()
);
}
public function getType() : string {
return 'Expr_PrintableNewAnonClass';
}
public function getSubNodeNames() : array {
return ['args', 'extends', 'implements', 'stmts'];
}
}

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<?php declare(strict_types=1);
namespace PhpParser\Internal;
/**
* Provides operations on token streams, for use by pretty printer.
*
* @internal
*/
class TokenStream
{
/** @var array Tokens (in token_get_all format) */
private $tokens;
/** @var int[] Map from position to indentation */
private $indentMap;
/**
* Create token stream instance.
*
* @param array $tokens Tokens in token_get_all() format
*/
public function __construct(array $tokens) {
$this->tokens = $tokens;
$this->indentMap = $this->calcIndentMap();
}
/**
* Whether the given position is immediately surrounded by parenthesis.
*
* @param int $startPos Start position
* @param int $endPos End position
*
* @return bool
*/
public function haveParens(int $startPos, int $endPos) : bool {
return $this->haveTokenImmediativelyBefore($startPos, '(')
&& $this->haveTokenImmediatelyAfter($endPos, ')');
}
/**
* Whether the given position is immediately surrounded by braces.
*
* @param int $startPos Start position
* @param int $endPos End position
*
* @return bool
*/
public function haveBraces(int $startPos, int $endPos) : bool {
return $this->haveTokenImmediativelyBefore($startPos, '{')
&& $this->haveTokenImmediatelyAfter($endPos, '}');
}
/**
* Check whether the position is directly preceded by a certain token type.
*
* During this check whitespace and comments are skipped.
*
* @param int $pos Position before which the token should occur
* @param int|string $expectedTokenType Token to check for
*
* @return bool Whether the expected token was found
*/
public function haveTokenImmediativelyBefore(int $pos, $expectedTokenType) : bool {
$tokens = $this->tokens;
$pos--;
for (; $pos >= 0; $pos--) {
$tokenType = $tokens[$pos][0];
if ($tokenType === $expectedTokenType) {
return true;
}
if ($tokenType !== \T_WHITESPACE
&& $tokenType !== \T_COMMENT && $tokenType !== \T_DOC_COMMENT) {
break;
}
}
return false;
}
/**
* Check whether the position is directly followed by a certain token type.
*
* During this check whitespace and comments are skipped.
*
* @param int $pos Position after which the token should occur
* @param int|string $expectedTokenType Token to check for
*
* @return bool Whether the expected token was found
*/
public function haveTokenImmediatelyAfter(int $pos, $expectedTokenType) : bool {
$tokens = $this->tokens;
$pos++;
for (; $pos < \count($tokens); $pos++) {
$tokenType = $tokens[$pos][0];
if ($tokenType === $expectedTokenType) {
return true;
}
if ($tokenType !== \T_WHITESPACE
&& $tokenType !== \T_COMMENT && $tokenType !== \T_DOC_COMMENT) {
break;
}
}
return false;
}
public function skipLeft(int $pos, $skipTokenType) {
$tokens = $this->tokens;
$pos = $this->skipLeftWhitespace($pos);
if ($skipTokenType === \T_WHITESPACE) {
return $pos;
}
if ($tokens[$pos][0] !== $skipTokenType) {
// Shouldn't happen. The skip token MUST be there
throw new \Exception('Encountered unexpected token');
}
$pos--;
return $this->skipLeftWhitespace($pos);
}
public function skipRight(int $pos, $skipTokenType) {
$tokens = $this->tokens;
$pos = $this->skipRightWhitespace($pos);
if ($skipTokenType === \T_WHITESPACE) {
return $pos;
}
if ($tokens[$pos][0] !== $skipTokenType) {
// Shouldn't happen. The skip token MUST be there
throw new \Exception('Encountered unexpected token');
}
$pos++;
return $this->skipRightWhitespace($pos);
}
/**
* Return first non-whitespace token position smaller or equal to passed position.
*
* @param int $pos Token position
* @return int Non-whitespace token position
*/
public function skipLeftWhitespace(int $pos) {
$tokens = $this->tokens;
for (; $pos >= 0; $pos--) {
$type = $tokens[$pos][0];
if ($type !== \T_WHITESPACE && $type !== \T_COMMENT && $type !== \T_DOC_COMMENT) {
break;
}
}
return $pos;
}
/**
* Return first non-whitespace position greater or equal to passed position.
*
* @param int $pos Token position
* @return int Non-whitespace token position
*/
public function skipRightWhitespace(int $pos) {
$tokens = $this->tokens;
for ($count = \count($tokens); $pos < $count; $pos++) {
$type = $tokens[$pos][0];
if ($type !== \T_WHITESPACE && $type !== \T_COMMENT && $type !== \T_DOC_COMMENT) {
break;
}
}
return $pos;
}
public function findRight($pos, $findTokenType) {
$tokens = $this->tokens;
for ($count = \count($tokens); $pos < $count; $pos++) {
$type = $tokens[$pos][0];
if ($type === $findTokenType) {
return $pos;
}
}
return -1;
}
/**
* Get indentation before token position.
*
* @param int $pos Token position
*
* @return int Indentation depth (in spaces)
*/
public function getIndentationBefore(int $pos) : int {
return $this->indentMap[$pos];
}
/**
* Get the code corresponding to a token offset range, optionally adjusted for indentation.
*
* @param int $from Token start position (inclusive)
* @param int $to Token end position (exclusive)
* @param int $indent By how much the code should be indented (can be negative as well)
*
* @return string Code corresponding to token range, adjusted for indentation
*/
public function getTokenCode(int $from, int $to, int $indent) : string {
$tokens = $this->tokens;
$result = '';
for ($pos = $from; $pos < $to; $pos++) {
$token = $tokens[$pos];
if (\is_array($token)) {
$type = $token[0];
$content = $token[1];
if ($type === \T_CONSTANT_ENCAPSED_STRING || $type === \T_ENCAPSED_AND_WHITESPACE) {
$result .= $content;
} else {
// TODO Handle non-space indentation
if ($indent < 0) {
$result .= str_replace("\n" . str_repeat(" ", -$indent), "\n", $content);
} elseif ($indent > 0) {
$result .= str_replace("\n", "\n" . str_repeat(" ", $indent), $content);
} else {
$result .= $content;
}
}
} else {
$result .= $token;
}
}
return $result;
}
/**
* Precalculate the indentation at every token position.
*
* @return int[] Token position to indentation map
*/
private function calcIndentMap() {
$indentMap = [];
$indent = 0;
foreach ($this->tokens as $token) {
$indentMap[] = $indent;
if ($token[0] === \T_WHITESPACE) {
$content = $token[1];
$newlinePos = \strrpos($content, "\n");
if (false !== $newlinePos) {
$indent = \strlen($content) - $newlinePos - 1;
}
}
}
// Add a sentinel for one past end of the file
$indentMap[] = $indent;
return $indentMap;
}
}

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<?php declare(strict_types=1);
namespace PhpParser;
class JsonDecoder
{
/** @var \ReflectionClass[] Node type to reflection class map */
private $reflectionClassCache;
public function decode(string $json) {
$value = json_decode($json, true);
if (json_last_error()) {
throw new \RuntimeException('JSON decoding error: ' . json_last_error_msg());
}
return $this->decodeRecursive($value);
}
private function decodeRecursive($value) {
if (\is_array($value)) {
if (isset($value['nodeType'])) {
if ($value['nodeType'] === 'Comment' || $value['nodeType'] === 'Comment_Doc') {
return $this->decodeComment($value);
}
return $this->decodeNode($value);
}
return $this->decodeArray($value);
}
return $value;
}
private function decodeArray(array $array) : array {
$decodedArray = [];
foreach ($array as $key => $value) {
$decodedArray[$key] = $this->decodeRecursive($value);
}
return $decodedArray;
}
private function decodeNode(array $value) : Node {
$nodeType = $value['nodeType'];
if (!\is_string($nodeType)) {
throw new \RuntimeException('Node type must be a string');
}
$reflectionClass = $this->reflectionClassFromNodeType($nodeType);
/** @var Node $node */
$node = $reflectionClass->newInstanceWithoutConstructor();
if (isset($value['attributes'])) {
if (!\is_array($value['attributes'])) {
throw new \RuntimeException('Attributes must be an array');
}
$node->setAttributes($this->decodeArray($value['attributes']));
}
foreach ($value as $name => $subNode) {
if ($name === 'nodeType' || $name === 'attributes') {
continue;
}
$node->$name = $this->decodeRecursive($subNode);
}
return $node;
}
private function decodeComment(array $value) : Comment {
$className = $value['nodeType'] === 'Comment' ? Comment::class : Comment\Doc::class;
if (!isset($value['text'])) {
throw new \RuntimeException('Comment must have text');
}
return new $className(
$value['text'], $value['line'] ?? -1, $value['filePos'] ?? -1, $value['tokenPos'] ?? -1
);
}
private function reflectionClassFromNodeType(string $nodeType) : \ReflectionClass {
if (!isset($this->reflectionClassCache[$nodeType])) {
$className = $this->classNameFromNodeType($nodeType);
$this->reflectionClassCache[$nodeType] = new \ReflectionClass($className);
}
return $this->reflectionClassCache[$nodeType];
}
private function classNameFromNodeType(string $nodeType) : string {
$className = 'PhpParser\\Node\\' . strtr($nodeType, '_', '\\');
if (class_exists($className)) {
return $className;
}
$className .= '_';
if (class_exists($className)) {
return $className;
}
throw new \RuntimeException("Unknown node type \"$nodeType\"");
}
}

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<?php declare(strict_types=1);
namespace PhpParser;
use PhpParser\Parser\Tokens;
class Lexer
{
protected $code;
protected $tokens;
protected $pos;
protected $line;
protected $filePos;
protected $prevCloseTagHasNewline;
protected $tokenMap;
protected $dropTokens;
protected $usedAttributes;
/**
* Creates a Lexer.
*
* @param array $options Options array. Currently only the 'usedAttributes' option is supported,
* which is an array of attributes to add to the AST nodes. Possible
* attributes are: 'comments', 'startLine', 'endLine', 'startTokenPos',
* 'endTokenPos', 'startFilePos', 'endFilePos'. The option defaults to the
* first three. For more info see getNextToken() docs.
*/
public function __construct(array $options = []) {
// map from internal tokens to PhpParser tokens
$this->tokenMap = $this->createTokenMap();
// map of tokens to drop while lexing (the map is only used for isset lookup,
// that's why the value is simply set to 1; the value is never actually used.)
$this->dropTokens = array_fill_keys(
[\T_WHITESPACE, \T_OPEN_TAG, \T_COMMENT, \T_DOC_COMMENT], 1
);
// the usedAttributes member is a map of the used attribute names to a dummy
// value (here "true")
$options += [
'usedAttributes' => ['comments', 'startLine', 'endLine'],
];
$this->usedAttributes = array_fill_keys($options['usedAttributes'], true);
}
/**
* Initializes the lexer for lexing the provided source code.
*
* This function does not throw if lexing errors occur. Instead, errors may be retrieved using
* the getErrors() method.
*
* @param string $code The source code to lex
* @param ErrorHandler|null $errorHandler Error handler to use for lexing errors. Defaults to
* ErrorHandler\Throwing
*/
public function startLexing(string $code, ErrorHandler $errorHandler = null) {
if (null === $errorHandler) {
$errorHandler = new ErrorHandler\Throwing();
}
$this->code = $code; // keep the code around for __halt_compiler() handling
$this->pos = -1;
$this->line = 1;
$this->filePos = 0;
// If inline HTML occurs without preceding code, treat it as if it had a leading newline.
// This ensures proper composability, because having a newline is the "safe" assumption.
$this->prevCloseTagHasNewline = true;
$scream = ini_set('xdebug.scream', '0');
error_clear_last();
$this->tokens = @token_get_all($code);
$this->handleErrors($errorHandler);
if (false !== $scream) {
ini_set('xdebug.scream', $scream);
}
}
private function handleInvalidCharacterRange($start, $end, $line, ErrorHandler $errorHandler) {
for ($i = $start; $i < $end; $i++) {
$chr = $this->code[$i];
if ($chr === 'b' || $chr === 'B') {
// HHVM does not treat b" tokens correctly, so ignore these
continue;
}
if ($chr === "\0") {
// PHP cuts error message after null byte, so need special case
$errorMsg = 'Unexpected null byte';
} else {
$errorMsg = sprintf(
'Unexpected character "%s" (ASCII %d)', $chr, ord($chr)
);
}
$errorHandler->handleError(new Error($errorMsg, [
'startLine' => $line,
'endLine' => $line,
'startFilePos' => $i,
'endFilePos' => $i,
]));
}
}
/**
* Check whether comment token is unterminated.
*
* @return bool
*/
private function isUnterminatedComment($token) : bool {
return ($token[0] === \T_COMMENT || $token[0] === \T_DOC_COMMENT)
&& substr($token[1], 0, 2) === '/*'
&& substr($token[1], -2) !== '*/';
}
/**
* Check whether an error *may* have occurred during tokenization.
*
* @return bool
*/
private function errorMayHaveOccurred() : bool {
if (defined('HHVM_VERSION')) {
// In HHVM token_get_all() does not throw warnings, so we need to conservatively
// assume that an error occurred
return true;
}
return null !== error_get_last();
}
protected function handleErrors(ErrorHandler $errorHandler) {
if (!$this->errorMayHaveOccurred()) {
return;
}
// PHP's error handling for token_get_all() is rather bad, so if we want detailed
// error information we need to compute it ourselves. Invalid character errors are
// detected by finding "gaps" in the token array. Unterminated comments are detected
// by checking if a trailing comment has a "*/" at the end.
$filePos = 0;
$line = 1;
foreach ($this->tokens as $token) {
$tokenValue = \is_string($token) ? $token : $token[1];
$tokenLen = \strlen($tokenValue);
if (substr($this->code, $filePos, $tokenLen) !== $tokenValue) {
// Something is missing, must be an invalid character
$nextFilePos = strpos($this->code, $tokenValue, $filePos);
$this->handleInvalidCharacterRange(
$filePos, $nextFilePos, $line, $errorHandler);
$filePos = (int) $nextFilePos;
}
$filePos += $tokenLen;
$line += substr_count($tokenValue, "\n");
}
if ($filePos !== \strlen($this->code)) {
if (substr($this->code, $filePos, 2) === '/*') {
// Unlike PHP, HHVM will drop unterminated comments entirely
$comment = substr($this->code, $filePos);
$errorHandler->handleError(new Error('Unterminated comment', [
'startLine' => $line,
'endLine' => $line + substr_count($comment, "\n"),
'startFilePos' => $filePos,
'endFilePos' => $filePos + \strlen($comment),
]));
// Emulate the PHP behavior
$isDocComment = isset($comment[3]) && $comment[3] === '*';
$this->tokens[] = [$isDocComment ? \T_DOC_COMMENT : \T_COMMENT, $comment, $line];
} else {
// Invalid characters at the end of the input
$this->handleInvalidCharacterRange(
$filePos, \strlen($this->code), $line, $errorHandler);
}
return;
}
if (count($this->tokens) > 0) {
// Check for unterminated comment
$lastToken = $this->tokens[count($this->tokens) - 1];
if ($this->isUnterminatedComment($lastToken)) {
$errorHandler->handleError(new Error('Unterminated comment', [
'startLine' => $line - substr_count($lastToken[1], "\n"),
'endLine' => $line,
'startFilePos' => $filePos - \strlen($lastToken[1]),
'endFilePos' => $filePos,
]));
}
}
}
/**
* Fetches the next token.
*
* The available attributes are determined by the 'usedAttributes' option, which can
* be specified in the constructor. The following attributes are supported:
*
* * 'comments' => Array of PhpParser\Comment or PhpParser\Comment\Doc instances,
* representing all comments that occurred between the previous
* non-discarded token and the current one.
* * 'startLine' => Line in which the node starts.
* * 'endLine' => Line in which the node ends.
* * 'startTokenPos' => Offset into the token array of the first token in the node.
* * 'endTokenPos' => Offset into the token array of the last token in the node.
* * 'startFilePos' => Offset into the code string of the first character that is part of the node.
* * 'endFilePos' => Offset into the code string of the last character that is part of the node.
*
* @param mixed $value Variable to store token content in
* @param mixed $startAttributes Variable to store start attributes in
* @param mixed $endAttributes Variable to store end attributes in
*
* @return int Token id
*/
public function getNextToken(&$value = null, &$startAttributes = null, &$endAttributes = null) : int {
$startAttributes = [];
$endAttributes = [];
while (1) {
if (isset($this->tokens[++$this->pos])) {
$token = $this->tokens[$this->pos];
} else {
// EOF token with ID 0
$token = "\0";
}
if (isset($this->usedAttributes['startLine'])) {
$startAttributes['startLine'] = $this->line;
}
if (isset($this->usedAttributes['startTokenPos'])) {
$startAttributes['startTokenPos'] = $this->pos;
}
if (isset($this->usedAttributes['startFilePos'])) {
$startAttributes['startFilePos'] = $this->filePos;
}
if (\is_string($token)) {
$value = $token;
if (isset($token[1])) {
// bug in token_get_all
$this->filePos += 2;
$id = ord('"');
} else {
$this->filePos += 1;
$id = ord($token);
}
} elseif (!isset($this->dropTokens[$token[0]])) {
$value = $token[1];
$id = $this->tokenMap[$token[0]];
if (\T_CLOSE_TAG === $token[0]) {
$this->prevCloseTagHasNewline = false !== strpos($token[1], "\n");
} elseif (\T_INLINE_HTML === $token[0]) {
$startAttributes['hasLeadingNewline'] = $this->prevCloseTagHasNewline;
}
$this->line += substr_count($value, "\n");
$this->filePos += \strlen($value);
} else {
if (\T_COMMENT === $token[0] || \T_DOC_COMMENT === $token[0]) {
if (isset($this->usedAttributes['comments'])) {
$comment = \T_DOC_COMMENT === $token[0]
? new Comment\Doc($token[1], $this->line, $this->filePos, $this->pos)
: new Comment($token[1], $this->line, $this->filePos, $this->pos);
$startAttributes['comments'][] = $comment;
}
}
$this->line += substr_count($token[1], "\n");
$this->filePos += \strlen($token[1]);
continue;
}
if (isset($this->usedAttributes['endLine'])) {
$endAttributes['endLine'] = $this->line;
}
if (isset($this->usedAttributes['endTokenPos'])) {
$endAttributes['endTokenPos'] = $this->pos;
}
if (isset($this->usedAttributes['endFilePos'])) {
$endAttributes['endFilePos'] = $this->filePos - 1;
}
return $id;
}
throw new \RuntimeException('Reached end of lexer loop');
}
/**
* Returns the token array for current code.
*
* The token array is in the same format as provided by the
* token_get_all() function and does not discard tokens (i.e.
* whitespace and comments are included). The token position
* attributes are against this token array.
*
* @return array Array of tokens in token_get_all() format
*/
public function getTokens() : array {
return $this->tokens;
}
/**
* Handles __halt_compiler() by returning the text after it.
*
* @return string Remaining text
*/
public function handleHaltCompiler() : string {
// text after T_HALT_COMPILER, still including ();
$textAfter = substr($this->code, $this->filePos);
// ensure that it is followed by ();
// this simplifies the situation, by not allowing any comments
// in between of the tokens.
if (!preg_match('~^\s*\(\s*\)\s*(?:;|\?>\r?\n?)~', $textAfter, $matches)) {
throw new Error('__HALT_COMPILER must be followed by "();"');
}
// prevent the lexer from returning any further tokens
$this->pos = count($this->tokens);
// return with (); removed
return substr($textAfter, strlen($matches[0]));
}
/**
* Creates the token map.
*
* The token map maps the PHP internal token identifiers
* to the identifiers used by the Parser. Additionally it
* maps T_OPEN_TAG_WITH_ECHO to T_ECHO and T_CLOSE_TAG to ';'.
*
* @return array The token map
*/
protected function createTokenMap() : array {
$tokenMap = [];
// 256 is the minimum possible token number, as everything below
// it is an ASCII value
for ($i = 256; $i < 1000; ++$i) {
if (\T_DOUBLE_COLON === $i) {
// T_DOUBLE_COLON is equivalent to T_PAAMAYIM_NEKUDOTAYIM
$tokenMap[$i] = Tokens::T_PAAMAYIM_NEKUDOTAYIM;
} elseif(\T_OPEN_TAG_WITH_ECHO === $i) {
// T_OPEN_TAG_WITH_ECHO with dropped T_OPEN_TAG results in T_ECHO
$tokenMap[$i] = Tokens::T_ECHO;
} elseif(\T_CLOSE_TAG === $i) {
// T_CLOSE_TAG is equivalent to ';'
$tokenMap[$i] = ord(';');
} elseif ('UNKNOWN' !== $name = token_name($i)) {
if ('T_HASHBANG' === $name) {
// HHVM uses a special token for #! hashbang lines
$tokenMap[$i] = Tokens::T_INLINE_HTML;
} elseif (defined($name = Tokens::class . '::' . $name)) {
// Other tokens can be mapped directly
$tokenMap[$i] = constant($name);
}
}
}
// HHVM uses a special token for numbers that overflow to double
if (defined('T_ONUMBER')) {
$tokenMap[\T_ONUMBER] = Tokens::T_DNUMBER;
}
// HHVM also has a separate token for the __COMPILER_HALT_OFFSET__ constant
if (defined('T_COMPILER_HALT_OFFSET')) {
$tokenMap[\T_COMPILER_HALT_OFFSET] = Tokens::T_STRING;
}
return $tokenMap;
}
}

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<?php declare(strict_types=1);
namespace PhpParser\Lexer;
use PhpParser\Error;
use PhpParser\ErrorHandler;
use PhpParser\Parser;
class Emulative extends \PhpParser\Lexer
{
const PHP_7_3 = '7.3.0dev';
const PHP_7_4 = '7.4.0dev';
const FLEXIBLE_DOC_STRING_REGEX = <<<'REGEX'
/<<<[ \t]*(['"]?)([a-zA-Z_\x80-\xff][a-zA-Z0-9_\x80-\xff]*)\1\r?\n
(?:.*\r?\n)*?
(?<indentation>\h*)\2(?![a-zA-Z_\x80-\xff])(?<separator>(?:;?[\r\n])?)/x
REGEX;
const T_COALESCE_EQUAL = 1007;
/**
* @var mixed[] Patches used to reverse changes introduced in the code
*/
private $patches = [];
/**
* @param mixed[] $options
*/
public function __construct(array $options = [])
{
parent::__construct($options);
// add emulated tokens here
$this->tokenMap[self::T_COALESCE_EQUAL] = Parser\Tokens::T_COALESCE_EQUAL;
}
public function startLexing(string $code, ErrorHandler $errorHandler = null) {
$this->patches = [];
if ($this->isEmulationNeeded($code) === false) {
// Nothing to emulate, yay
parent::startLexing($code, $errorHandler);
return;
}
$collector = new ErrorHandler\Collecting();
// 1. emulation of heredoc and nowdoc new syntax
$preparedCode = $this->processHeredocNowdoc($code);
parent::startLexing($preparedCode, $collector);
// 2. emulation of ??= token
$this->processCoaleseEqual($code);
$this->fixupTokens();
$errors = $collector->getErrors();
if (!empty($errors)) {
$this->fixupErrors($errors);
foreach ($errors as $error) {
$errorHandler->handleError($error);
}
}
}
private function isCoalesceEqualEmulationNeeded(string $code): bool
{
// skip version where this works without emulation
if (version_compare(\PHP_VERSION, self::PHP_7_4, '>=')) {
return false;
}
return strpos($code, '??=') !== false;
}
private function processCoaleseEqual(string $code)
{
if ($this->isCoalesceEqualEmulationNeeded($code) === false) {
return;
}
// We need to manually iterate and manage a count because we'll change
// the tokens array on the way
$line = 1;
for ($i = 0, $c = count($this->tokens); $i < $c; ++$i) {
if (isset($this->tokens[$i + 1])) {
if ($this->tokens[$i][0] === T_COALESCE && $this->tokens[$i + 1] === '=') {
array_splice($this->tokens, $i, 2, [
[self::T_COALESCE_EQUAL, '??=', $line]
]);
$c--;
continue;
}
}
if (\is_array($this->tokens[$i])) {
$line += substr_count($this->tokens[$i][1], "\n");
}
}
}
private function isHeredocNowdocEmulationNeeded(string $code): bool
{
// skip version where this works without emulation
if (version_compare(\PHP_VERSION, self::PHP_7_3, '>=')) {
return false;
}
return strpos($code, '<<<') !== false;
}
private function processHeredocNowdoc(string $code): string
{
if ($this->isHeredocNowdocEmulationNeeded($code) === false) {
return $code;
}
if (!preg_match_all(self::FLEXIBLE_DOC_STRING_REGEX, $code, $matches, PREG_SET_ORDER|PREG_OFFSET_CAPTURE)) {
// No heredoc/nowdoc found
return $code;
}
// Keep track of how much we need to adjust string offsets due to the modifications we
// already made
$posDelta = 0;
foreach ($matches as $match) {
$indentation = $match['indentation'][0];
$indentationStart = $match['indentation'][1];
$separator = $match['separator'][0];
$separatorStart = $match['separator'][1];
if ($indentation === '' && $separator !== '') {
// Ordinary heredoc/nowdoc
continue;
}
if ($indentation !== '') {
// Remove indentation
$indentationLen = strlen($indentation);
$code = substr_replace($code, '', $indentationStart + $posDelta, $indentationLen);
$this->patches[] = [$indentationStart + $posDelta, 'add', $indentation];
$posDelta -= $indentationLen;
}
if ($separator === '') {
// Insert newline as separator
$code = substr_replace($code, "\n", $separatorStart + $posDelta, 0);
$this->patches[] = [$separatorStart + $posDelta, 'remove', "\n"];
$posDelta += 1;
}
}
return $code;
}
private function isEmulationNeeded(string $code): bool
{
if ($this->isHeredocNowdocEmulationNeeded($code)) {
return true;
}
if ($this->isCoalesceEqualEmulationNeeded($code)) {
return true;
}
return false;
}
private function fixupTokens()
{
if (\count($this->patches) === 0) {
return;
}
// Load first patch
$patchIdx = 0;
list($patchPos, $patchType, $patchText) = $this->patches[$patchIdx];
// We use a manual loop over the tokens, because we modify the array on the fly
$pos = 0;
for ($i = 0, $c = \count($this->tokens); $i < $c; $i++) {
$token = $this->tokens[$i];
if (\is_string($token)) {
// We assume that patches don't apply to string tokens
$pos += \strlen($token);
continue;
}
$len = \strlen($token[1]);
$posDelta = 0;
while ($patchPos >= $pos && $patchPos < $pos + $len) {
$patchTextLen = \strlen($patchText);
if ($patchType === 'remove') {
if ($patchPos === $pos && $patchTextLen === $len) {
// Remove token entirely
array_splice($this->tokens, $i, 1, []);
$i--;
$c--;
} else {
// Remove from token string
$this->tokens[$i][1] = substr_replace(
$token[1], '', $patchPos - $pos + $posDelta, $patchTextLen
);
$posDelta -= $patchTextLen;
}
} elseif ($patchType === 'add') {
// Insert into the token string
$this->tokens[$i][1] = substr_replace(
$token[1], $patchText, $patchPos - $pos + $posDelta, 0
);
$posDelta += $patchTextLen;
} else {
assert(false);
}
// Fetch the next patch
$patchIdx++;
if ($patchIdx >= \count($this->patches)) {
// No more patches, we're done
return;
}
list($patchPos, $patchType, $patchText) = $this->patches[$patchIdx];
// Multiple patches may apply to the same token. Reload the current one to check
// If the new patch applies
$token = $this->tokens[$i];
}
$pos += $len;
}
// A patch did not apply
assert(false);
}
/**
* Fixup line and position information in errors.
*
* @param Error[] $errors
*/
private function fixupErrors(array $errors) {
foreach ($errors as $error) {
$attrs = $error->getAttributes();
$posDelta = 0;
$lineDelta = 0;
foreach ($this->patches as $patch) {
list($patchPos, $patchType, $patchText) = $patch;
if ($patchPos >= $attrs['startFilePos']) {
// No longer relevant
break;
}
if ($patchType === 'add') {
$posDelta += strlen($patchText);
$lineDelta += substr_count($patchText, "\n");
} else {
$posDelta -= strlen($patchText);
$lineDelta -= substr_count($patchText, "\n");
}
}
$attrs['startFilePos'] += $posDelta;
$attrs['endFilePos'] += $posDelta;
$attrs['startLine'] += $lineDelta;
$attrs['endLine'] += $lineDelta;
$error->setAttributes($attrs);
}
}
}

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<?php declare(strict_types=1);
namespace PhpParser;
use PhpParser\Node\Name;
use PhpParser\Node\Name\FullyQualified;
use PhpParser\Node\Stmt;
class NameContext
{
/** @var null|Name Current namespace */
protected $namespace;
/** @var Name[][] Map of format [aliasType => [aliasName => originalName]] */
protected $aliases = [];
/** @var Name[][] Same as $aliases but preserving original case */
protected $origAliases = [];
/** @var ErrorHandler Error handler */
protected $errorHandler;
/**
* Create a name context.
*
* @param ErrorHandler $errorHandler Error handling used to report errors
*/
public function __construct(ErrorHandler $errorHandler) {
$this->errorHandler = $errorHandler;
}
/**
* Start a new namespace.
*
* This also resets the alias table.
*
* @param Name|null $namespace Null is the global namespace
*/
public function startNamespace(Name $namespace = null) {
$this->namespace = $namespace;
$this->origAliases = $this->aliases = [
Stmt\Use_::TYPE_NORMAL => [],
Stmt\Use_::TYPE_FUNCTION => [],
Stmt\Use_::TYPE_CONSTANT => [],
];
}
/**
* Add an alias / import.
*
* @param Name $name Original name
* @param string $aliasName Aliased name
* @param int $type One of Stmt\Use_::TYPE_*
* @param array $errorAttrs Attributes to use to report an error
*/
public function addAlias(Name $name, string $aliasName, int $type, array $errorAttrs = []) {
// Constant names are case sensitive, everything else case insensitive
if ($type === Stmt\Use_::TYPE_CONSTANT) {
$aliasLookupName = $aliasName;
} else {
$aliasLookupName = strtolower($aliasName);
}
if (isset($this->aliases[$type][$aliasLookupName])) {
$typeStringMap = [
Stmt\Use_::TYPE_NORMAL => '',
Stmt\Use_::TYPE_FUNCTION => 'function ',
Stmt\Use_::TYPE_CONSTANT => 'const ',
];
$this->errorHandler->handleError(new Error(
sprintf(
'Cannot use %s%s as %s because the name is already in use',
$typeStringMap[$type], $name, $aliasName
),
$errorAttrs
));
return;
}
$this->aliases[$type][$aliasLookupName] = $name;
$this->origAliases[$type][$aliasName] = $name;
}
/**
* Get current namespace.
*
* @return null|Name Namespace (or null if global namespace)
*/
public function getNamespace() {
return $this->namespace;
}
/**
* Get resolved name.
*
* @param Name $name Name to resolve
* @param int $type One of Stmt\Use_::TYPE_{FUNCTION|CONSTANT}
*
* @return null|Name Resolved name, or null if static resolution is not possible
*/
public function getResolvedName(Name $name, int $type) {
// don't resolve special class names
if ($type === Stmt\Use_::TYPE_NORMAL && $name->isSpecialClassName()) {
if (!$name->isUnqualified()) {
$this->errorHandler->handleError(new Error(
sprintf("'\\%s' is an invalid class name", $name->toString()),
$name->getAttributes()
));
}
return $name;
}
// fully qualified names are already resolved
if ($name->isFullyQualified()) {
return $name;
}
// Try to resolve aliases
if (null !== $resolvedName = $this->resolveAlias($name, $type)) {
return $resolvedName;
}
if ($type !== Stmt\Use_::TYPE_NORMAL && $name->isUnqualified()) {
if (null === $this->namespace) {
// outside of a namespace unaliased unqualified is same as fully qualified
return new FullyQualified($name, $name->getAttributes());
}
// Cannot resolve statically
return null;
}
// if no alias exists prepend current namespace
return FullyQualified::concat($this->namespace, $name, $name->getAttributes());
}
/**
* Get resolved class name.
*
* @param Name $name Class ame to resolve
*
* @return Name Resolved name
*/
public function getResolvedClassName(Name $name) : Name {
return $this->getResolvedName($name, Stmt\Use_::TYPE_NORMAL);
}
/**
* Get possible ways of writing a fully qualified name (e.g., by making use of aliases).
*
* @param string $name Fully-qualified name (without leading namespace separator)
* @param int $type One of Stmt\Use_::TYPE_*
*
* @return Name[] Possible representations of the name
*/
public function getPossibleNames(string $name, int $type) : array {
$lcName = strtolower($name);
if ($type === Stmt\Use_::TYPE_NORMAL) {
// self, parent and static must always be unqualified
if ($lcName === "self" || $lcName === "parent" || $lcName === "static") {
return [new Name($name)];
}
}
// Collect possible ways to write this name, starting with the fully-qualified name
$possibleNames = [new FullyQualified($name)];
if (null !== $nsRelativeName = $this->getNamespaceRelativeName($name, $lcName, $type)) {
// Make sure there is no alias that makes the normally namespace-relative name
// into something else
if (null === $this->resolveAlias($nsRelativeName, $type)) {
$possibleNames[] = $nsRelativeName;
}
}
// Check for relevant namespace use statements
foreach ($this->origAliases[Stmt\Use_::TYPE_NORMAL] as $alias => $orig) {
$lcOrig = $orig->toLowerString();
if (0 === strpos($lcName, $lcOrig . '\\')) {
$possibleNames[] = new Name($alias . substr($name, strlen($lcOrig)));
}
}
// Check for relevant type-specific use statements
foreach ($this->origAliases[$type] as $alias => $orig) {
if ($type === Stmt\Use_::TYPE_CONSTANT) {
// Constants are are complicated-sensitive
$normalizedOrig = $this->normalizeConstName($orig->toString());
if ($normalizedOrig === $this->normalizeConstName($name)) {
$possibleNames[] = new Name($alias);
}
} else {
// Everything else is case-insensitive
if ($orig->toLowerString() === $lcName) {
$possibleNames[] = new Name($alias);
}
}
}
return $possibleNames;
}
/**
* Get shortest representation of this fully-qualified name.
*
* @param string $name Fully-qualified name (without leading namespace separator)
* @param int $type One of Stmt\Use_::TYPE_*
*
* @return Name Shortest representation
*/
public function getShortName(string $name, int $type) : Name {
$possibleNames = $this->getPossibleNames($name, $type);
// Find shortest name
$shortestName = null;
$shortestLength = \INF;
foreach ($possibleNames as $possibleName) {
$length = strlen($possibleName->toCodeString());
if ($length < $shortestLength) {
$shortestName = $possibleName;
$shortestLength = $length;
}
}
return $shortestName;
}
private function resolveAlias(Name $name, $type) {
$firstPart = $name->getFirst();
if ($name->isQualified()) {
// resolve aliases for qualified names, always against class alias table
$checkName = strtolower($firstPart);
if (isset($this->aliases[Stmt\Use_::TYPE_NORMAL][$checkName])) {
$alias = $this->aliases[Stmt\Use_::TYPE_NORMAL][$checkName];
return FullyQualified::concat($alias, $name->slice(1), $name->getAttributes());
}
} elseif ($name->isUnqualified()) {
// constant aliases are case-sensitive, function aliases case-insensitive
$checkName = $type === Stmt\Use_::TYPE_CONSTANT ? $firstPart : strtolower($firstPart);
if (isset($this->aliases[$type][$checkName])) {
// resolve unqualified aliases
return new FullyQualified($this->aliases[$type][$checkName], $name->getAttributes());
}
}
// No applicable aliases
return null;
}
private function getNamespaceRelativeName(string $name, string $lcName, int $type) {
if (null === $this->namespace) {
return new Name($name);
}
if ($type === Stmt\Use_::TYPE_CONSTANT) {
// The constants true/false/null always resolve to the global symbols, even inside a
// namespace, so they may be used without qualification
if ($lcName === "true" || $lcName === "false" || $lcName === "null") {
return new Name($name);
}
}
$namespacePrefix = strtolower($this->namespace . '\\');
if (0 === strpos($lcName, $namespacePrefix)) {
return new Name(substr($name, strlen($namespacePrefix)));
}
return null;
}
private function normalizeConstName(string $name) {
$nsSep = strrpos($name, '\\');
if (false === $nsSep) {
return $name;
}
// Constants have case-insensitive namespace and case-sensitive short-name
$ns = substr($name, 0, $nsSep);
$shortName = substr($name, $nsSep + 1);
return strtolower($ns) . '\\' . $shortName;
}
}

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<?php declare(strict_types=1);
namespace PhpParser;
interface Node
{
/**
* Gets the type of the node.
*
* @return string Type of the node
*/
public function getType() : string;
/**
* Gets the names of the sub nodes.
*
* @return array Names of sub nodes
*/
public function getSubNodeNames() : array;
/**
* Gets line the node started in (alias of getStartLine).
*
* @return int Start line (or -1 if not available)
*/
public function getLine() : int;
/**
* Gets line the node started in.
*
* Requires the 'startLine' attribute to be enabled in the lexer (enabled by default).
*
* @return int Start line (or -1 if not available)
*/
public function getStartLine() : int;
/**
* Gets the line the node ended in.
*
* Requires the 'endLine' attribute to be enabled in the lexer (enabled by default).
*
* @return int End line (or -1 if not available)
*/
public function getEndLine() : int;
/**
* Gets the token offset of the first token that is part of this node.
*
* The offset is an index into the array returned by Lexer::getTokens().
*
* Requires the 'startTokenPos' attribute to be enabled in the lexer (DISABLED by default).
*
* @return int Token start position (or -1 if not available)
*/
public function getStartTokenPos() : int;
/**
* Gets the token offset of the last token that is part of this node.
*
* The offset is an index into the array returned by Lexer::getTokens().
*
* Requires the 'endTokenPos' attribute to be enabled in the lexer (DISABLED by default).
*
* @return int Token end position (or -1 if not available)
*/
public function getEndTokenPos() : int;
/**
* Gets the file offset of the first character that is part of this node.
*
* Requires the 'startFilePos' attribute to be enabled in the lexer (DISABLED by default).
*
* @return int File start position (or -1 if not available)
*/
public function getStartFilePos() : int;
/**
* Gets the file offset of the last character that is part of this node.
*
* Requires the 'endFilePos' attribute to be enabled in the lexer (DISABLED by default).
*
* @return int File end position (or -1 if not available)
*/
public function getEndFilePos() : int;
/**
* Gets all comments directly preceding this node.
*
* The comments are also available through the "comments" attribute.
*
* @return Comment[]
*/
public function getComments() : array;
/**
* Gets the doc comment of the node.
*
* The doc comment has to be the last comment associated with the node.
*
* @return null|Comment\Doc Doc comment object or null
*/
public function getDocComment();
/**
* Sets the doc comment of the node.
*
* This will either replace an existing doc comment or add it to the comments array.
*
* @param Comment\Doc $docComment Doc comment to set
*/
public function setDocComment(Comment\Doc $docComment);
/**
* Sets an attribute on a node.
*
* @param string $key
* @param mixed $value
*/
public function setAttribute(string $key, $value);
/**
* Returns whether an attribute exists.
*
* @param string $key
*
* @return bool
*/
public function hasAttribute(string $key) : bool;
/**
* Returns the value of an attribute.
*
* @param string $key
* @param mixed $default
*
* @return mixed
*/
public function getAttribute(string $key, $default = null);
/**
* Returns all the attributes of this node.
*
* @return array
*/
public function getAttributes() : array;
/**
* Replaces all the attributes of this node.
*
* @param array $attributes
*/
public function setAttributes(array $attributes);
}

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vendor/nikic/php-parser/lib/PhpParser/Node/Arg.php vendored Normal file
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<?php declare(strict_types=1);
namespace PhpParser\Node;
use PhpParser\NodeAbstract;
class Arg extends NodeAbstract
{
/** @var Expr Value to pass */
public $value;
/** @var bool Whether to pass by ref */
public $byRef;
/** @var bool Whether to unpack the argument */
public $unpack;
/**
* Constructs a function call argument node.
*
* @param Expr $value Value to pass
* @param bool $byRef Whether to pass by ref
* @param bool $unpack Whether to unpack the argument
* @param array $attributes Additional attributes
*/
public function __construct(Expr $value, bool $byRef = false, bool $unpack = false, array $attributes = []) {
parent::__construct($attributes);
$this->value = $value;
$this->byRef = $byRef;
$this->unpack = $unpack;
}
public function getSubNodeNames() : array {
return ['value', 'byRef', 'unpack'];
}
public function getType() : string {
return 'Arg';
}
}

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vendor/nikic/php-parser/lib/PhpParser/Node/Const_.php vendored Normal file
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<?php declare(strict_types=1);
namespace PhpParser\Node;
use PhpParser\NodeAbstract;
/**
* @property Name $namespacedName Namespaced name (for class constants, if using NameResolver)
*/
class Const_ extends NodeAbstract
{
/** @var Identifier Name */
public $name;
/** @var Expr Value */
public $value;
/**
* Constructs a const node for use in class const and const statements.
*
* @param string|Identifier $name Name
* @param Expr $value Value
* @param array $attributes Additional attributes
*/
public function __construct($name, Expr $value, array $attributes = []) {
parent::__construct($attributes);
$this->name = \is_string($name) ? new Identifier($name) : $name;
$this->value = $value;
}
public function getSubNodeNames() : array {
return ['name', 'value'];
}
public function getType() : string {
return 'Const';
}
}

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vendor/nikic/php-parser/lib/PhpParser/Node/Expr.php vendored Normal file
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<?php declare(strict_types=1);
namespace PhpParser\Node;
use PhpParser\NodeAbstract;
abstract class Expr extends NodeAbstract
{
}

34
vendor/nikic/php-parser/lib/PhpParser/Node/Expr/ArrayDimFetch.php vendored Normal file
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<?php declare(strict_types=1);
namespace PhpParser\Node\Expr;
use PhpParser\Node\Expr;
class ArrayDimFetch extends Expr
{
/** @var Expr Variable */
public $var;
/** @var null|Expr Array index / dim */
public $dim;
/**
* Constructs an array index fetch node.
*
* @param Expr $var Variable
* @param null|Expr $dim Array index / dim
* @param array $attributes Additional attributes
*/
public function __construct(Expr $var, Expr $dim = null, array $attributes = []) {
parent::__construct($attributes);
$this->var = $var;
$this->dim = $dim;
}
public function getSubNodeNames() : array {
return ['var', 'dim'];
}
public function getType() : string {
return 'Expr_ArrayDimFetch';
}
}

38
vendor/nikic/php-parser/lib/PhpParser/Node/Expr/ArrayItem.php vendored Normal file
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<?php declare(strict_types=1);
namespace PhpParser\Node\Expr;
use PhpParser\Node\Expr;
class ArrayItem extends Expr
{
/** @var null|Expr Key */
public $key;
/** @var Expr Value */
public $value;
/** @var bool Whether to assign by reference */
public $byRef;
/**
* Constructs an array item node.
*
* @param Expr $value Value
* @param null|Expr $key Key
* @param bool $byRef Whether to assign by reference
* @param array $attributes Additional attributes
*/
public function __construct(Expr $value, Expr $key = null, bool $byRef = false, array $attributes = []) {
parent::__construct($attributes);
$this->key = $key;
$this->value = $value;
$this->byRef = $byRef;
}
public function getSubNodeNames() : array {
return ['key', 'value', 'byRef'];
}
public function getType() : string {
return 'Expr_ArrayItem';
}
}

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vendor/nikic/php-parser/lib/PhpParser/Node/Expr/Array_.php vendored Normal file
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<?php declare(strict_types=1);
namespace PhpParser\Node\Expr;
use PhpParser\Node\Expr;
class Array_ extends Expr
{
// For use in "kind" attribute
const KIND_LONG = 1; // array() syntax
const KIND_SHORT = 2; // [] syntax
/** @var ArrayItem[] Items */
public $items;
/**
* Constructs an array node.
*
* @param ArrayItem[] $items Items of the array
* @param array $attributes Additional attributes
*/
public function __construct(array $items = [], array $attributes = []) {
parent::__construct($attributes);
$this->items = $items;
}
public function getSubNodeNames() : array {
return ['items'];
}
public function getType() : string {
return 'Expr_Array';
}
}

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vendor/nikic/php-parser/lib/PhpParser/Node/Expr/Assign.php vendored Normal file
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<?php declare(strict_types=1);
namespace PhpParser\Node\Expr;
use PhpParser\Node\Expr;
class Assign extends Expr
{
/** @var Expr Variable */
public $var;
/** @var Expr Expression */
public $expr;
/**
* Constructs an assignment node.
*
* @param Expr $var Variable
* @param Expr $expr Expression
* @param array $attributes Additional attributes
*/
public function __construct(Expr $var, Expr $expr, array $attributes = []) {
parent::__construct($attributes);
$this->var = $var;
$this->expr = $expr;
}
public function getSubNodeNames() : array {
return ['var', 'expr'];
}
public function getType() : string {
return 'Expr_Assign';
}
}

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vendor/nikic/php-parser/lib/PhpParser/Node/Expr/AssignOp.php vendored Normal file
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<?php declare(strict_types=1);
namespace PhpParser\Node\Expr;
use PhpParser\Node\Expr;
abstract class AssignOp extends Expr
{
/** @var Expr Variable */
public $var;
/** @var Expr Expression */
public $expr;
/**
* Constructs a compound assignment operation node.
*
* @param Expr $var Variable
* @param Expr $expr Expression
* @param array $attributes Additional attributes
*/
public function __construct(Expr $var, Expr $expr, array $attributes = []) {
parent::__construct($attributes);
$this->var = $var;
$this->expr = $expr;
}
public function getSubNodeNames() : array {
return ['var', 'expr'];
}
}

12
vendor/nikic/php-parser/lib/PhpParser/Node/Expr/AssignOp/BitwiseAnd.php vendored Normal file
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<?php declare(strict_types=1);
namespace PhpParser\Node\Expr\AssignOp;
use PhpParser\Node\Expr\AssignOp;
class BitwiseAnd extends AssignOp
{
public function getType() : string {
return 'Expr_AssignOp_BitwiseAnd';
}
}

12
vendor/nikic/php-parser/lib/PhpParser/Node/Expr/AssignOp/BitwiseOr.php vendored Normal file
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<?php declare(strict_types=1);
namespace PhpParser\Node\Expr\AssignOp;
use PhpParser\Node\Expr\AssignOp;
class BitwiseOr extends AssignOp
{
public function getType() : string {
return 'Expr_AssignOp_BitwiseOr';
}
}

12
vendor/nikic/php-parser/lib/PhpParser/Node/Expr/AssignOp/BitwiseXor.php vendored Normal file
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<?php declare(strict_types=1);
namespace PhpParser\Node\Expr\AssignOp;
use PhpParser\Node\Expr\AssignOp;
class BitwiseXor extends AssignOp
{
public function getType() : string {
return 'Expr_AssignOp_BitwiseXor';
}
}

12
vendor/nikic/php-parser/lib/PhpParser/Node/Expr/AssignOp/Coalesce.php vendored Normal file
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<?php declare(strict_types=1);
namespace PhpParser\Node\Expr\AssignOp;
use PhpParser\Node\Expr\AssignOp;
class Coalesce extends AssignOp
{
public function getType() : string {
return 'Expr_AssignOp_Coalesce';
}
}

12
vendor/nikic/php-parser/lib/PhpParser/Node/Expr/AssignOp/Concat.php vendored Normal file
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<?php declare(strict_types=1);
namespace PhpParser\Node\Expr\AssignOp;
use PhpParser\Node\Expr\AssignOp;
class Concat extends AssignOp
{
public function getType() : string {
return 'Expr_AssignOp_Concat';
}
}

12
vendor/nikic/php-parser/lib/PhpParser/Node/Expr/AssignOp/Div.php vendored Normal file
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<?php declare(strict_types=1);
namespace PhpParser\Node\Expr\AssignOp;
use PhpParser\Node\Expr\AssignOp;
class Div extends AssignOp
{
public function getType() : string {
return 'Expr_AssignOp_Div';
}
}

12
vendor/nikic/php-parser/lib/PhpParser/Node/Expr/AssignOp/Minus.php vendored Normal file
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<?php declare(strict_types=1);
namespace PhpParser\Node\Expr\AssignOp;
use PhpParser\Node\Expr\AssignOp;
class Minus extends AssignOp
{
public function getType() : string {
return 'Expr_AssignOp_Minus';
}
}

12
vendor/nikic/php-parser/lib/PhpParser/Node/Expr/AssignOp/Mod.php vendored Normal file
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<?php declare(strict_types=1);
namespace PhpParser\Node\Expr\AssignOp;
use PhpParser\Node\Expr\AssignOp;
class Mod extends AssignOp
{
public function getType() : string {
return 'Expr_AssignOp_Mod';
}
}

12
vendor/nikic/php-parser/lib/PhpParser/Node/Expr/AssignOp/Mul.php vendored Normal file
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<?php declare(strict_types=1);
namespace PhpParser\Node\Expr\AssignOp;
use PhpParser\Node\Expr\AssignOp;
class Mul extends AssignOp
{
public function getType() : string {
return 'Expr_AssignOp_Mul';
}
}

12
vendor/nikic/php-parser/lib/PhpParser/Node/Expr/AssignOp/Plus.php vendored Normal file
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<?php declare(strict_types=1);
namespace PhpParser\Node\Expr\AssignOp;
use PhpParser\Node\Expr\AssignOp;
class Plus extends AssignOp
{
public function getType() : string {
return 'Expr_AssignOp_Plus';
}
}

12
vendor/nikic/php-parser/lib/PhpParser/Node/Expr/AssignOp/Pow.php vendored Normal file
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<?php declare(strict_types=1);
namespace PhpParser\Node\Expr\AssignOp;
use PhpParser\Node\Expr\AssignOp;
class Pow extends AssignOp
{
public function getType() : string {
return 'Expr_AssignOp_Pow';
}
}

12
vendor/nikic/php-parser/lib/PhpParser/Node/Expr/AssignOp/ShiftLeft.php vendored Normal file
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<?php declare(strict_types=1);
namespace PhpParser\Node\Expr\AssignOp;
use PhpParser\Node\Expr\AssignOp;
class ShiftLeft extends AssignOp
{
public function getType() : string {
return 'Expr_AssignOp_ShiftLeft';
}
}

12
vendor/nikic/php-parser/lib/PhpParser/Node/Expr/AssignOp/ShiftRight.php vendored Normal file
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<?php declare(strict_types=1);
namespace PhpParser\Node\Expr\AssignOp;
use PhpParser\Node\Expr\AssignOp;
class ShiftRight extends AssignOp
{
public function getType() : string {
return 'Expr_AssignOp_ShiftRight';
}
}

34
vendor/nikic/php-parser/lib/PhpParser/Node/Expr/AssignRef.php vendored Normal file
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<?php declare(strict_types=1);
namespace PhpParser\Node\Expr;
use PhpParser\Node\Expr;
class AssignRef extends Expr
{
/** @var Expr Variable reference is assigned to */
public $var;
/** @var Expr Variable which is referenced */
public $expr;
/**
* Constructs an assignment node.
*
* @param Expr $var Variable
* @param Expr $expr Expression
* @param array $attributes Additional attributes
*/
public function __construct(Expr $var, Expr $expr, array $attributes = []) {
parent::__construct($attributes);
$this->var = $var;
$this->expr = $expr;
}
public function getSubNodeNames() : array {
return ['var', 'expr'];
}
public function getType() : string {
return 'Expr_AssignRef';
}
}

40
vendor/nikic/php-parser/lib/PhpParser/Node/Expr/BinaryOp.php vendored Normal file
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<?php declare(strict_types=1);
namespace PhpParser\Node\Expr;
use PhpParser\Node\Expr;
abstract class BinaryOp extends Expr
{
/** @var Expr The left hand side expression */
public $left;
/** @var Expr The right hand side expression */
public $right;
/**
* Constructs a binary operator node.
*
* @param Expr $left The left hand side expression
* @param Expr $right The right hand side expression
* @param array $attributes Additional attributes
*/
public function __construct(Expr $left, Expr $right, array $attributes = []) {
parent::__construct($attributes);
$this->left = $left;
$this->right = $right;
}
public function getSubNodeNames() : array {
return ['left', 'right'];
}
/**
* Get the operator sigil for this binary operation.
*
* In the case there are multiple possible sigils for an operator, this method does not
* necessarily return the one used in the parsed code.
*
* @return string
*/
abstract public function getOperatorSigil() : string;
}

16
vendor/nikic/php-parser/lib/PhpParser/Node/Expr/BinaryOp/BitwiseAnd.php vendored Normal file
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<?php declare(strict_types=1);
namespace PhpParser\Node\Expr\BinaryOp;
use PhpParser\Node\Expr\BinaryOp;
class BitwiseAnd extends BinaryOp
{
public function getOperatorSigil() : string {
return '&';
}
public function getType() : string {
return 'Expr_BinaryOp_BitwiseAnd';
}
}

16
vendor/nikic/php-parser/lib/PhpParser/Node/Expr/BinaryOp/BitwiseOr.php vendored Normal file
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<?php declare(strict_types=1);
namespace PhpParser\Node\Expr\BinaryOp;
use PhpParser\Node\Expr\BinaryOp;
class BitwiseOr extends BinaryOp
{
public function getOperatorSigil() : string {
return '|';
}
public function getType() : string {
return 'Expr_BinaryOp_BitwiseOr';
}
}

16
vendor/nikic/php-parser/lib/PhpParser/Node/Expr/BinaryOp/BitwiseXor.php vendored Normal file
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<?php declare(strict_types=1);
namespace PhpParser\Node\Expr\BinaryOp;
use PhpParser\Node\Expr\BinaryOp;
class BitwiseXor extends BinaryOp
{
public function getOperatorSigil() : string {
return '^';
}
public function getType() : string {
return 'Expr_BinaryOp_BitwiseXor';
}
}

16
vendor/nikic/php-parser/lib/PhpParser/Node/Expr/BinaryOp/BooleanAnd.php vendored Normal file
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<?php declare(strict_types=1);
namespace PhpParser\Node\Expr\BinaryOp;
use PhpParser\Node\Expr\BinaryOp;
class BooleanAnd extends BinaryOp
{
public function getOperatorSigil() : string {
return '&&';
}
public function getType() : string {
return 'Expr_BinaryOp_BooleanAnd';
}
}

16
vendor/nikic/php-parser/lib/PhpParser/Node/Expr/BinaryOp/BooleanOr.php vendored Normal file
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@ -0,0 +1,16 @@
<?php declare(strict_types=1);
namespace PhpParser\Node\Expr\BinaryOp;
use PhpParser\Node\Expr\BinaryOp;
class BooleanOr extends BinaryOp
{
public function getOperatorSigil() : string {
return '||';
}
public function getType() : string {
return 'Expr_BinaryOp_BooleanOr';
}
}

16
vendor/nikic/php-parser/lib/PhpParser/Node/Expr/BinaryOp/Coalesce.php vendored Normal file
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<?php declare(strict_types=1);
namespace PhpParser\Node\Expr\BinaryOp;
use PhpParser\Node\Expr\BinaryOp;
class Coalesce extends BinaryOp
{
public function getOperatorSigil() : string {
return '??';
}
public function getType() : string {
return 'Expr_BinaryOp_Coalesce';
}
}

16
vendor/nikic/php-parser/lib/PhpParser/Node/Expr/BinaryOp/Concat.php vendored Normal file
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<?php declare(strict_types=1);
namespace PhpParser\Node\Expr\BinaryOp;
use PhpParser\Node\Expr\BinaryOp;
class Concat extends BinaryOp
{
public function getOperatorSigil() : string {
return '.';
}
public function getType() : string {
return 'Expr_BinaryOp_Concat';
}
}

16
vendor/nikic/php-parser/lib/PhpParser/Node/Expr/BinaryOp/Div.php vendored Normal file
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@ -0,0 +1,16 @@
<?php declare(strict_types=1);
namespace PhpParser\Node\Expr\BinaryOp;
use PhpParser\Node\Expr\BinaryOp;
class Div extends BinaryOp
{
public function getOperatorSigil() : string {
return '/';
}
public function getType() : string {
return 'Expr_BinaryOp_Div';
}
}

16
vendor/nikic/php-parser/lib/PhpParser/Node/Expr/BinaryOp/Equal.php vendored Normal file
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@ -0,0 +1,16 @@
<?php declare(strict_types=1);
namespace PhpParser\Node\Expr\BinaryOp;
use PhpParser\Node\Expr\BinaryOp;
class Equal extends BinaryOp
{
public function getOperatorSigil() : string {
return '==';
}
public function getType() : string {
return 'Expr_BinaryOp_Equal';
}
}

16
vendor/nikic/php-parser/lib/PhpParser/Node/Expr/BinaryOp/Greater.php vendored Normal file
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<?php declare(strict_types=1);
namespace PhpParser\Node\Expr\BinaryOp;
use PhpParser\Node\Expr\BinaryOp;
class Greater extends BinaryOp
{
public function getOperatorSigil() : string {
return '>';
}
public function getType() : string {
return 'Expr_BinaryOp_Greater';
}
}

16
vendor/nikic/php-parser/lib/PhpParser/Node/Expr/BinaryOp/GreaterOrEqual.php vendored Normal file
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@ -0,0 +1,16 @@
<?php declare(strict_types=1);
namespace PhpParser\Node\Expr\BinaryOp;
use PhpParser\Node\Expr\BinaryOp;
class GreaterOrEqual extends BinaryOp
{
public function getOperatorSigil() : string {
return '>=';
}
public function getType() : string {
return 'Expr_BinaryOp_GreaterOrEqual';
}
}

16
vendor/nikic/php-parser/lib/PhpParser/Node/Expr/BinaryOp/Identical.php vendored Normal file
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@ -0,0 +1,16 @@
<?php declare(strict_types=1);
namespace PhpParser\Node\Expr\BinaryOp;
use PhpParser\Node\Expr\BinaryOp;
class Identical extends BinaryOp
{
public function getOperatorSigil() : string {
return '===';
}
public function getType() : string {
return 'Expr_BinaryOp_Identical';
}
}

16
vendor/nikic/php-parser/lib/PhpParser/Node/Expr/BinaryOp/LogicalAnd.php vendored Normal file
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@ -0,0 +1,16 @@
<?php declare(strict_types=1);
namespace PhpParser\Node\Expr\BinaryOp;
use PhpParser\Node\Expr\BinaryOp;
class LogicalAnd extends BinaryOp
{
public function getOperatorSigil() : string {
return 'and';
}
public function getType() : string {
return 'Expr_BinaryOp_LogicalAnd';
}
}

16
vendor/nikic/php-parser/lib/PhpParser/Node/Expr/BinaryOp/LogicalOr.php vendored Normal file
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<?php declare(strict_types=1);
namespace PhpParser\Node\Expr\BinaryOp;
use PhpParser\Node\Expr\BinaryOp;
class LogicalOr extends BinaryOp
{
public function getOperatorSigil() : string {
return 'or';
}
public function getType() : string {
return 'Expr_BinaryOp_LogicalOr';
}
}

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