xref: /PHP-Parser/CHANGELOG.md (revision 13967679)
1Version 5.0.2 (2024-03-05)
2--------------------------
3
4### Fixed
5
6* Fix handling of indentation on next line after opening PHP tag in formatting-preserving pretty
7printer.
8
9### Changed
10
11* Avoid cyclic references in `Parser` objects. This means that no longer used parser objects are
12  immediately destroyed now, instead of requiring cycle GC.
13* Update `PhpVersion::getNewestSupported()` to report PHP 8.3 instead of PHP 8.2.
14
15Version 5.0.1 (2024-02-21)
16--------------------------
17
18### Changed
19
20* Added check to detect use of PHP-Parser with libraries that define `T_*` compatibility tokens
21  with incorrect type (such as string instead of int). This would lead to `TypeError`s down the
22  line. Now an `Error` will be thrown early to indicate the problem.
23
24Version 5.0.0 (2024-01-07)
25--------------------------
26
27See UPGRADE-5.0 for detailed migration instructions.
28
29### Fixed
30
31* Fixed parent class of `PropertyItem` and `UseItem`.
32
33Version 5.0.0-rc1 (2023-12-20)
34------------------------------
35
36See UPGRADE-5.0 for detailed migration instructions.
37
38### Fixed
39
40* Fixed parsing of empty files.
41
42### Added
43
44* Added support for printing additional attributes (like `kind`) in `NodeDumper`.
45* Added `rawValue` attribute to `InterpolatedStringPart` and heredoc/nowdoc `String_`s, which
46  provides the original, unparsed value. It was previously only available for non-interpolated
47  single/double quoted strings.
48* Added `Stmt\Block` to represent `{}` code blocks. Previously, such code blocks were flattened
49  into the parent statements array. `Stmt\Block` will not be created for structures that are
50  typically used with code blocks, for example `if ($x) { $y; }` will be represented as previously,
51  while `if ($x) { { $x; } }` will have an extra `Stmt\Block` wrapper.
52
53### Changed
54
55* Use visitor to assign comments. This fixes the long-standing issue where comments were assigned
56  to all nodes sharing a starting position. Now only the outer-most node will hold the comments.
57* Don't parse unicode escape sequences when targeting PHP < 7.0.
58* Improve NodeDumper performance for large dumps.
59
60### Removed
61
62* Removed `Stmt\Throw_` node, use `Expr\Throw_` inside `Stmt\Expression` instead.
63* Removed `ParserFactory::create()`.
64
65Version 5.0.0-beta1 (2023-09-17)
66--------------------------------
67
68See UPGRADE-5.0 for detailed migration instructions.
69
70### Added
71
72* Visitors can now be passed directly to the `NodeTraverser` constructor. A separate call to
73  `addVisitor()` is no longer required.
74
75### Changed
76
77* The minimum host PHP version is now PHP 7.4. It is still possible to parse code from older
78  versions. Property types have been added where possible.
79* The `Lexer` no longer accepts options. `Lexer\Emulative` only accepts a `PhpVersion`. The
80  `startLexing()`, `getTokens()` and `handleHaltCompiler()` methods have been removed. Instead,
81  there is a single method `tokenize()` returning the tokens.
82* The `Parser::getLexer()` method has been replaced by `Parser::getTokens()`.
83* Attribute handling has been moved from the lexer to the parser, and is no longer configurable.
84  The comments, startLine, endLine, startTokenPos, endTokenPos, startFilePos, and endFilePos
85  attributes will always be added.
86* The pretty printer now defaults to PHP 7.4 as the target version.
87* The pretty printer now indents heredoc/nowdoc strings if the target version is >= 7.3
88  (flexible heredoc/nowdoc).
89
90### Removed
91
92* The deprecated `Comment::getLine()`, `Comment::getTokenPos()` and `Comment::getFilePos()` methods
93  have been removed. Use `Comment::getStartLine()`, `Comment::getStartTokenPos()` and
94  `Comment::getStartFilePos()` instead.
95
96### Deprecated
97
98* The `Node::getLine()` method has been deprecated. Use `Node::getStartLine()` instead.
99
100Version 5.0.0-alpha3 (2023-06-24)
101---------------------------------
102
103See UPGRADE-5.0 for detailed migration instructions.
104
105### Added
106
107* [PHP 8.3] Added support for typed constants.
108* [PHP 8.3] Added support for readonly anonymous classes.
109* Added support for `NodeVisitor::REPLACE_WITH_NULL`.
110* Added support for CRLF newlines in the pretty printer, using the new `newline` option.
111
112### Changed
113
114* Use PHP 7.1 as the default target version for the pretty printer.
115* Print `else if { }` instead of `else { if { } }`.
116* The `leaveNode()` method on visitors is now invoked in reverse order of `enterNode()`.
117* Moved `NodeTraverser::REMOVE_NODE` etc. to `NodeVisitor::REMOVE_NODE`. The old constants are still
118  available for compatibility.
119* The `Name` subnode `parts` has been replaced by `name`, which stores the name as a string rather
120  than an array of parts separated by namespace separators. The `getParts()` method returns the old
121  representation.
122* No longer accept strings for types in Node constructors. Instead, either an `Identifier`, `Name`
123  or `ComplexType` must be passed.
124* `Comment::getReformattedText()` now normalizes CRLF newlines to LF newlines.
125
126### Fixed
127
128* Don't trim leading whitespace in formatting preserving printer.
129* Treat DEL as a label character in the formatting preserving printer depending on the targeted
130  PHP version.
131* Fix error reporting in emulative lexer without explicitly specified error handler.
132* Gracefully handle non-contiguous array indices in the `Differ`.
133
134Version 5.0.0-alpha2 (2023-03-05)
135---------------------------------
136
137See UPGRADE-5.0 for detailed migration instructions.
138
139### Added
140
141* [PHP 8.3] Added support for dynamic class constant fetch.
142* Added many additional type annotations. PhpStan is now used.
143* Added a fuzzing target for PHP-Fuzzer, which was how a lot of pretty printer bugs were found.
144* Added `isPromoted()`, `isPublic()`, `isProtected()`, `isPrivate()` and `isReadonly()` methods
145  on `Param`.
146* Added support for class constants in trait builder.
147* Added `PrettyPrinter` interface.
148* Added support for formatting preservation when toggling static modifiers.
149* The `php-parse` binary now accepts `-` as the file name, in which case it will read from stdin.
150
151### Fixed
152
153* The pretty printer now uses a more accurate treatment of unary operator precedence, and will only
154  wrap them in parentheses if required. This allowed fixing a number of other precedence related
155  bugs.
156* The pretty printer now respects the precedence of `clone`, `throw` and arrow functions.
157* The pretty printer no longer unconditionally wraps `yield` in parentheses, unless the target
158  version is set to older than PHP 7.0.
159* Fixed formatting preservation for alternative elseif/else syntax.
160* Fixed checks for when it is safe to print strings as heredoc/nowdoc to accommodate flexible
161  doc string semantics.
162* The pretty printer now prints parentheses around new/instanceof operands in all required
163  situations.
164* Similar, differences in allowed expressions on the LHS of `->` and `::` are now taken into account.
165* Fixed various cases where `\r` at the end of a doc string could be incorrectly merged into a CRLF
166  sequence with a following `\n`.
167* `__halt_compiler` is no longer recognized as a semi-reserved keyword, in line with PHP behavior.
168* `<?=` is no longer recognized as a semi-reserved keyword.
169* Fix handling of very large overflowing `\u` escape sequences.
170
171### Removed
172
173* Removed deprecated `Error` constructor taking a line number instead of an attributes array.
174
175Version 5.0.0-alpha1 (2022-09-04)
176---------------------------------
177
178See UPGRADE-5.0 for detailed migration instructions.
179
180### Changed
181
182* PHP 7.1 is now required to run PHP-Parser.
183* Formatting of the standard pretty printer has been adjusted to match PSR-12 more closely.
184* The internal token representation now uses a `PhpParser\Token` class, which is compatible with
185  PHP 8 token representation (`PhpToken`).
186* Destructuring is now always represented using `Expr\List_` nodes, even if it uses `[]` syntax.
187* Renamed a number of node classes, and moved things that were not real expressions/statements
188  outside the `Expr`/`Stmt` hierarchy. Compatibility shims for the old names have been retained.
189
190### Added
191
192* Added `PhpVersion` class, which is accepted in a number of places (e.g. ParserFactory, Parser,
193  Lexer, PrettyPrinter) and gives more precise control over the PHP version being targeted.
194* Added PHP 8 parser though it only differs from the PHP 7 parser in concatenation precedence.
195* Added `Parser::getLexer()` method.
196* Added a `Modifiers` class, as a replacement for `Stmt\Class_::MODIFIER_*`.
197* Added support for returning an array or `REMOVE_NODE` from `NodeVisitor::enterNode()`.
198
199### Removed
200
201* The PHP 5 parser has been removed. The PHP 7 parser has been adjusted to deal with PHP 5 code
202  more gracefully.
203
204Version 4.15.1 (2022-09-04)
205---------------------------
206
207### Fixed
208
209* Fixed formatting preservation when adding *multiple* attributes to a class/method/etc that
210  previously had none. This fixes a regression in the 4.15.0 release.
211
212Version 4.15.0 (2022-09-03)
213---------------------------
214
215### Added
216
217* PHP 8.2: Added support for `true` type.
218* PHP 8.2: Added support for DNF types.
219
220### Fixed
221
222* Support `readonly` as a function name.
223* Added `__serialize` and `__unserialize` to magic method list.
224* Fixed bounds check in `Name::slice()`.
225* Fixed formatting preservation when adding attributes to a class/method/etc that previously had none.
226
227Version 4.14.0 (2022-05-31)
228---------------------------
229
230### Added
231
232* Added support for readonly classes.
233* Added `rawValue` attribute to `LNumber`, `DNumber` and `String_` nodes, which stores the unparsed
234  value of the literal (e.g. `"1_000"` rather than `1000`).
235
236Version 4.13.2 (2021-11-30)
237---------------------------
238
239### Added
240
241* Added builders for enums and enum cases.
242
243### Fixed
244
245* NullsafeMethodCall now extends from CallLike.
246* The `namespacedName` property populated by the `NameResolver` is now declared on relevant nodes,
247  to avoid a dynamic property deprecation warning with PHP 8.2.
248
249Version 4.13.1 (2021-11-03)
250---------------------------
251
252### Fixed
253
254* Support reserved keywords as enum cases.
255* Support array unpacking in constant expression evaluator.
256
257Version 4.13.0 (2021-09-20)
258---------------------------
259
260### Added
261
262* [PHP 8.1] Added support for intersection types using a new `IntersectionType` node. Additionally
263  a `ComplexType` parent class for `NullableType`, `UnionType` and `IntersectionType` has been
264  added.
265* [PHP 8.1] Added support for explicit octal literals.
266* [PHP 8.1] Added support for first-class callables. These are represented using a call whose first
267  argument is a `VariadicPlaceholder`. The representation is intended to be forward-compatible with
268  partial function application, just like the PHP feature itself. Call nodes now extend from
269  `Expr\CallLike`, which provides an `isFirstClassCallable()` method to determine whether a
270  placeholder id present. `getArgs()` can be used to assert that the call is not a first-class
271  callable and returns `Arg[]` rather than `array<Arg|VariadicPlaceholder>`.
272
273### Fixed
274
275* Multiple modifiers for promoted properties are now accepted. In particular this allows something
276  like `public readonly` for promoted properties.
277* Formatting-preserving pretty printing for comments in array literals has been fixed.
278
279Version 4.12.0 (2021-07-21)
280---------------------------
281
282### Added
283
284* [PHP 8.1] Added support for readonly properties (through a new `MODIFIER_READONLY`).
285* [PHP 8.1] Added support for final class constants.
286
287### Fixed
288
289* Fixed compatibility with PHP 8.1. `&` tokens are now canonicalized to the
290  `T_AMPERSAND_FOLLOWED_BY_VAR_OR_VARARG` and `T_AMPERSAND_NOT_FOLLOWED_BY_VAR_OR_VARARG` tokens
291  used in PHP 8.1. This happens unconditionally, regardless of whether the emulative lexer is used.
292
293Version 4.11.0 (2021-07-03)
294---------------------------
295
296### Added
297
298* `BuilderFactory::args()` now accepts named arguments.
299* `BuilderFactory::attribute()` has been added.
300* An `addAttribute()` method accepting an `Attribute` or `AttributeGroup` has been adde to all
301  builders that accept attributes, such as `Builder\Class_`.
302
303### Fixed
304
305* `NameResolver` now handles enums.
306* `PrettyPrinter` now prints backing enum type.
307* Builder methods for types now property handle `never` type.
308
309Version 4.10.5 (2021-05-03)
310---------------------------
311
312### Added
313
314* [PHP 8.1] Added support for enums. These are represented using the `Stmt\Enum_` and
315  `Stmt\EnumCase` nodes.
316* [PHP 8.1] Added support for never type. This type will now be returned as an `Identifier` rather
317  than `Name`.
318* Added `ClassConst` builder.
319
320### Changed
321
322* Non-UTF-8 code units in strings will now be hex-encoded.
323
324### Fixed
325
326* Fixed precedence of arrow functions.
327
328Version 4.10.4 (2020-12-20)
329---------------------------
330
331### Fixed
332
333* Fixed position information for variable-variables (#741).
334* Fixed position information for traits/interfaces preceded by if statement (#738).
335
336Version 4.10.3 (2020-12-03)
337---------------------------
338
339### Fixed
340
341* Fixed formatting-preserving pretty printing for `"{$x}"`.
342* Ternary expressions are now treated as non-associative in the pretty printer, in order to
343  generate code that is compatible with the parentheses requirement introduced in PHP 8.
344* Removed no longer necessary `error_clear_last()` call in lexer, which may interfere with fatal
345  error handlers if invoked during shutdown.
346
347
348Version 4.10.2 (2020-09-26)
349------------------
350
351### Fixed
352
353* Fixed check for token emulation conflicts with other libraries.
354
355Version 4.10.1 (2020-09-23)
356---------------------------
357
358### Added
359
360* Added support for recovering from a missing semicolon after a property or class constant
361  declaration.
362
363### Fixed
364
365* Fix spurious whitespace in formatting-preserving pretty printer when both removing and adding
366  elements at the start of a list.
367* Fix incorrect case-sensitivity in keyword token emulation.
368
369Version 4.10.0 (2020-09-19)
370---------------------------
371
372### Added
373
374* [PHP 8.0] Added support for attributes. These are represented using a new `AttributeGroup` node
375  containing `Attribute` nodes. A new `attrGroups` subnode is available on all node types that
376  support attributes, i.e. `Stmt\Class_`, `Stmt\Trait_`, `Stmt\Interface_`, `Stmt\Function_`,
377  `Stmt\ClassMethod`, `Stmt\ClassConst`, `Stmt\Property`, `Expr\Closure`, `Expr\ArrowFunction` and
378  `Param`.
379* [PHP 8.0] Added support for nullsafe properties inside interpolated strings, in line with an
380  upstream change.
381
382### Fixed
383
384* Improved compatibility with other libraries that use forward compatibility defines for PHP tokens.
385
386Version 4.9.1 (2020-08-30)
387--------------------------
388
389### Added
390
391* Added support for removing the first element of a list to the formatting-preserving pretty
392  printer.
393
394### Fixed
395
396* Allow member modifiers as part of namespaced names. These were missed when support for other
397  keywords was added.
398
399Version 4.9.0 (2020-08-18)
400--------------------------
401
402### Added
403
404* [PHP 8.0] Added support for named arguments, represented using a new `name` subnode on `Arg`.
405* [PHP 8.0] Added support for static return type, represented like a normal class return type.
406* [PHP 8.0] Added support for throw expression, represented using a new `Expr\Throw_` node. For
407  backwards compatibility reasons, throw expressions in statement context continue to be
408  represented using `Stmt\Throw_`.
409* [PHP 8.0] Added support for keywords as parts of namespaced names.
410
411### Fixed
412
413* Emit parentheses for class constant fetch with complex left-hand-side.
414* Emit parentheses for new/instanceof on complex class expression.
415
416Version 4.8.0 (2020-08-09)
417--------------------------
418
419### Added
420
421* [PHP 8.0] Added support for nullsafe operator, represented using the new
422  `Expr\NullsafePropertyFetch` and `Expr\NullsafeMethodCall` nodes.
423* Added `phpVersion` option to the emulative lexer, which allows controlling the target version to
424  emulate (defaults to the latest available, currently PHP 8.0). This is useful to parse code that
425  uses reserved keywords from newer PHP versions as identifiers.
426
427Version 4.7.0 (2020-07-25)
428--------------------------
429
430### Added
431
432* Add `ParentConnectingVisitor` and `NodeConnectingVisitor` classes.
433* [PHP 8.0] Added support for match expressions. These are represented using a new `Expr\Match_`
434  containing `MatchArm`s.
435* [PHP 8.0] Added support for trailing comma in closure use lists.
436
437### Fixed
438
439* Fixed missing error for unterminated comment with trailing newline (#688).
440* Compatibility with PHP 8.0 has been restored: Namespaced names are now always represented by
441  `T_NAME_*` tokens, using emulationg on older PHP versions. Full support for reserved keywords
442  in namespaced names is not yet present.
443
444Version 4.6.0 (2020-07-02)
445--------------------------
446
447### Added
448
449* [PHP 8.0] Added support for trailing commas in parameter lists.
450* [PHP 8.0] Added support for constructor promotion. The parameter visibility is stored in
451  `Node\Param::$flags`.
452
453### Fixed
454
455* Comment tokens now always follow the PHP 8 interpretation, and do not include trailing
456  whitespace.
457* As a result of the previous change, some whitespace issues when inserting a statement into a
458  method containing only a comment, and using the formatting-preserving pretty printer, have been
459  resolved.
460
461Version 4.5.0 (2020-06-03)
462--------------------------
463
464### Added
465
466* [PHP 8.0] Added support for the mixed type. This means `mixed` types are now parsed as an
467  `Identifier` rather than a `Name`.
468* [PHP 8.0] Added support for catching without capturing the exception. This means that
469  `Catch_::$var` may now be null.
470
471Version 4.4.0 (2020-04-10)
472--------------------------
473
474### Added
475
476* Added support for passing union types in builders.
477* Added end line, token position and file position information for comments.
478* Added `getProperty()` method to `ClassLike` nodes.
479
480### Fixed
481
482* Fixed generation of invalid code when using the formatting preserving pretty printer, and
483  inserting code next to certain nop statements. The formatting is still ugly though.
484* `getDocComment()` no longer requires that the very last comment before a node be a doc comment.
485  There may not be non-doc comments between the doc comment and the declaration.
486* Allowed arbitrary expressions in `isset()` and `list()`, rather than just variables.
487  In particular, this allows `isset(($x))`, which is legal PHP code.
488* [PHP 8.0] Add support for [variable syntax tweaks RFC](https://wiki.php.net/rfc/variable_syntax_tweaks).
489
490Version 4.3.0 (2019-11-08)
491--------------------------
492
493### Added
494
495* [PHP 8.0] Added support for union types using a new `UnionType` node.
496
497Version 4.2.5 (2019-10-25)
498--------------------------
499
500### Changed
501
502* Tests and documentation are no longer included in source archives. They can still be accessed
503  by cloning the repository.
504* php-yacc is now used to generate the parser. This has no impact on users of the library.
505
506Version 4.2.4 (2019-09-01)
507--------------------------
508
509### Added
510
511* Added getProperties(), getConstants() and getTraitUses() to ClassLike. (#629, #630)
512
513### Fixed
514
515* Fixed flexible heredoc emulation to check for digits after the end label. This synchronizes
516  behavior with the upcoming PHP 7.3.10 release.
517
518Version 4.2.3 (2019-08-12)
519--------------------------
520
521### Added
522
523* [PHP 7.4] Add support for numeric literal separators. (#615)
524
525### Fixed
526
527* Fixed resolution of return types for arrow functions. (#613)
528* Fixed compatibility with PHP 7.4.
529
530Version 4.2.2 (2019-05-25)
531--------------------------
532
533### Added
534
535* [PHP 7.4] Add support for arrow functions using a new `Expr\ArrowFunction` node. (#602)
536* [PHP 7.4] Add support for array spreads, using a new `unpack` subnode on `ArrayItem`. (#609)
537* Added support for inserting into empty list nodes in the formatting preserving pretty printer.
538
539### Changed
540
541* `php-parse` will now print messages to stderr, so that stdout only contains the actual result of
542  the operation (such as a JSON dump). (#605)
543
544### Fixed
545
546* Fixed attribute assignment for zero-length nop statements, and a related assertion failure in
547  the formatting-preserving pretty printer. (#589)
548
549Version 4.2.1 (2019-02-16)
550--------------------------
551
552### Added
553
554* [PHP 7.4] Add support for `??=` operator through a new `AssignOp\Coalesce` node. (#575)
555
556Version 4.2.0 (2019-01-12)
557--------------------------
558
559### Added
560
561* [PHP 7.4] Add support for typed properties through a new `type` subnode of `Stmt\Property`.
562  Additionally `Builder\Property` now has a `setType()` method. (#567)
563* Add `kind` attribute to `Cast\Double_`, which allows to distinguish between `(float)`,
564  `(double)` and `(real)`. The form of the cast will be preserved by the pretty printer. (#565)
565
566### Fixed
567
568* Remove assertion when pretty printing anonymous class with a name (#554).
569
570Version 4.1.1 (2018-12-26)
571--------------------------
572
573### Fixed
574
575* Fix "undefined offset" notice when parsing specific malformed code (#551).
576
577### Added
578
579* Support error recovery for missing return type (`function foo() : {}`) (#544).
580
581Version 4.1.0 (2018-10-10)
582--------------------------
583
584### Added
585
586* Added support for PHP 7.3 flexible heredoc/nowdoc strings, completing support for PHP 7.3. There
587  are two caveats for this feature:
588   * In some rare, pathological cases flexible heredoc/nowdoc strings change the interpretation of
589     existing doc strings. PHP-Parser will now use the new interpretation.
590   * Flexible heredoc/nowdoc strings require special support from the lexer. Because this is not
591     available on PHP versions before 7.3, support has to be emulated. This emulation is not perfect
592     and some cases which we do not expect to occur in practice (such as flexible doc strings being
593     nested within each other through abuse of variable-variable interpolation syntax) may not be
594     recognized correctly.
595* Added `DONT_TRAVERSE_CURRENT_AND_CHILDREN` to `NodeTraverser` to skip both traversal of child
596  nodes, and prevent subsequent visitors from visiting the current node.
597
598Version 4.0.4 (2018-09-18)
599--------------------------
600
601### Added
602
603* The following methods have been added to `BuilderFactory`:
604  * `useTrait()` (fluent builder)
605  * `traitUseAdaptation()` (fluent builder)
606  * `useFunction()` (fluent builder)
607  * `useConst()` (fluent builder)
608  * `var()`
609  * `propertyFetch()`
610
611### Deprecated
612
613* `Builder\Param::setTypeHint()` has been deprecated in favor of the newly introduced
614  `Builder\Param::setType()`.
615
616Version 4.0.3 (2018-07-15)
617--------------------------
618
619### Fixed
620
621* Fixed possible undefined offset notice in formatting-preserving printer. (#513)
622
623### Added
624
625* Improved error recovery inside arrays.
626* Preserve trailing comment inside classes. **Note:** This change is possibly BC breaking if your
627  code validates that classes can only contain certain statement types. After this change, classes
628  can also contain Nop statements, while this was not previously possible. (#509)
629
630Version 4.0.2 (2018-06-03)
631--------------------------
632
633### Added
634
635* Improved error recovery inside classes.
636* Support error recovery for `foreach` without `as`.
637* Support error recovery for parameters without variable (`function (Type ) {}`).
638* Support error recovery for functions without body (`function ($foo)`).
639
640Version 4.0.1 (2018-03-25)
641--------------------------
642
643### Added
644
645* [PHP 7.3] Added support for trailing commas in function calls.
646* [PHP 7.3] Added support for by-reference array destructuring.
647* Added checks to node traverser to prevent replacing a statement with an expression or vice versa.
648  This should prevent common mistakes in the implementation of node visitors.
649* Added the following methods to `BuilderFactory`, to simplify creation of expressions:
650  * `funcCall()`
651  * `methodCall()`
652  * `staticCall()`
653  * `new()`
654  * `constFetch()`
655  * `classConstFetch()`
656
657Version 4.0.0 (2018-02-28)
658--------------------------
659
660* No significant code changes since the beta 1 release.
661
662Version 4.0.0-beta1 (2018-01-27)
663--------------------------------
664
665### Fixed
666
667* In formatting-preserving pretty printer: Fixed indentation when inserting into lists. (#466)
668
669### Added
670
671* In formatting-preserving pretty printer: Improved formatting of elements inserted into multi-line
672  arrays.
673
674### Removed
675
676* The `Autoloader` class has been removed. It is now required to use the Composer autoloader.
677
678Version 4.0.0-alpha3 (2017-12-26)
679---------------------------------
680
681### Fixed
682
683* In the formatting-preserving pretty printer:
684  * Fixed comment indentation.
685  * Fixed handling of inline HTML in the fallback case.
686  * Fixed insertion into list nodes that require creation of a code block.
687
688### Added
689
690* Added support for inserting at the start of list nodes in formatting-preserving pretty printer.
691
692Version 4.0.0-alpha2 (2017-11-10)
693---------------------------------
694
695### Added
696
697* In the formatting-preserving pretty printer:
698  * Added support for changing modifiers.
699  * Added support for anonymous classes.
700  * Added support for removing from list nodes.
701  * Improved support for changing comments.
702* Added start token offsets to comments.
703
704Version 4.0.0-alpha1 (2017-10-18)
705---------------------------------
706
707### Added
708
709* Added experimental support for format-preserving pretty-printing. In this mode formatting will be
710  preserved for parts of the code which have not been modified.
711* Added `replaceNodes` option to `NameResolver`, defaulting to true. If this option is disabled,
712  resolved names will be added as `resolvedName` attributes, instead of replacing the original
713  names.
714* Added `NodeFinder` class, which can be used to find nodes based on a callback or class name. This
715  is a utility to avoid custom node visitor implementations for simple search operations.
716* Added `ClassMethod::isMagic()` method.
717* Added `BuilderFactory` methods: `val()` method for creating an AST for a simple value, `concat()`
718  for creating concatenation trees, `args()` for preparing function arguments.
719* Added `NameContext` class, which encapsulates the `NameResolver` logic independently of the actual
720  AST traversal. This facilitates use in other context, such as class names in doc comments.
721  Additionally it provides an API for getting the shortest representation of a name.
722* Added `Node::setAttributes()` method.
723* Added `JsonDecoder`. This allows conversion JSON back into an AST.
724* Added `Name` methods `toLowerString()` and `isSpecialClassName()`.
725* Added `Identifier` and `VarLikeIdentifier` nodes, which are used in place of simple strings in
726  many places.
727* Added `getComments()`, `getStartLine()`, `getEndLine()`, `getStartTokenPos()`, `getEndTokenPos()`,
728  `getStartFilePos()` and `getEndFilePos()` methods to `Node`. These provide a more obvious access
729  point for the already existing attributes of the same name.
730* Added `ConstExprEvaluator` to evaluate constant expressions to PHP values.
731* Added `Expr\BinaryOp::getOperatorSigil()`, returning `+` for `Expr\BinaryOp\Plus`, etc.
732
733### Changed
734
735* Many subnodes that previously held simple strings now use `Identifier` (or `VarLikeIdentifier`)
736  nodes. Please see the UPGRADE-4.0 file for an exhaustive list of affected nodes and some notes on
737  possible impact.
738* Expression statements (`expr;`) are now represented using a `Stmt\Expression` node. Previously
739  these statements were directly represented as their constituent expression.
740* The `name` subnode of `Param` has been renamed to `var` and now contains a `Variable` rather than
741  a plain string.
742* The `name` subnode of `StaticVar` has been renamed to `var` and now contains a `Variable` rather
743  than a plain string.
744* The `var` subnode of `ClosureUse` now contains a `Variable` rather than a plain string.
745* The `var` subnode of `Catch` now contains a `Variable` rather than a plain string.
746* The `alias` subnode of `UseUse` is now `null` if no explicit alias is given. As such,
747  `use Foo\Bar` and `use Foo\Bar as Bar` are now represented differently. The `getAlias()` method
748  can be used to get the effective alias, even if it is not explicitly given.
749
750### Removed
751
752* Support for running on PHP 5 and HHVM has been removed. You can however still parse code of old
753  PHP versions (such as PHP 5.2), while running on PHP 7.
754* Removed `type` subnode on `Class`, `ClassMethod` and `Property` nodes. Use `flags` instead.
755* The `ClassConst::isStatic()` method has been removed. Constants cannot have a static modifier.
756* The `NodeTraverser` no longer accepts `false` as a return value from a `leaveNode()` method.
757  `NodeTraverser::REMOVE_NODE` should be returned instead.
758* The `Node::setLine()` method has been removed. If you really need to, you can use `setAttribute()`
759  instead.
760* The misspelled `Class_::VISIBILITY_MODIFER_MASK` constant has been dropped in favor of
761  `Class_::VISIBILITY_MODIFIER_MASK`.
762* The XML serializer has been removed. As such, the classes `Serializer\XML`, and
763  `Unserializer\XML`, as well as the interfaces `Serializer` and `Unserializer` no longer exist.
764* The `BuilderAbstract` class has been removed. It's functionality is moved into `BuilderHelpers`.
765  However, this is an internal class and should not be used directly.
766
767Version 3.1.5 (2018-02-28)
768--------------------------
769
770### Fixed
771
772* Fixed duplicate comment assignment in switch statements. (#469)
773* Improve compatibility with PHP-Scoper. (#477)
774
775Version 3.1.4 (2018-01-25)
776--------------------------
777
778### Fixed
779
780* Fixed pretty printing of `-(-$x)` and `+(+$x)`. (#459)
781
782Version 3.1.3 (2017-12-26)
783--------------------------
784
785### Fixed
786
787* Improve compatibility with php-scoper, by supporting prefixed namespaces in
788  `NodeAbstract::getType()`.
789
790Version 3.1.2 (2017-11-04)
791--------------------------
792
793### Fixed
794
795* Comments on empty blocks are now preserved on a `Stmt\Nop` node. (#382)
796
797### Added
798
799* Added `kind` attribute for `Stmt\Namespace_` node, which is one of `KIND_SEMICOLON` or
800  `KIND_BRACED`. (#417)
801* Added `setDocComment()` method to namespace builder. (#437)
802
803Version 3.1.1 (2017-09-02)
804--------------------------
805
806### Fixed
807
808* Fixed syntax error on comment after brace-style namespace declaration. (#412)
809* Added support for TraitUse statements in trait builder. (#413)
810
811Version 3.1.0 (2017-07-28)
812--------------------------
813
814### Added
815
816* [PHP 7.2] Added support for trailing comma in group use statements.
817* [PHP 7.2] Added support for `object` type. This means `object` types will now be represented as a
818  builtin type (a simple `"object"` string), rather than a class `Name`.
819
820### Fixed
821
822* Floating-point numbers are now printed correctly if the LC_NUMERIC locale uses a comma as decimal
823  separator.
824
825### Changed
826
827* `Name::$parts` is no longer deprecated.
828
829Version 3.0.6 (2017-06-28)
830--------------------------
831
832### Fixed
833
834* Fixed the spelling of `Class_::VISIBILITY_MODIFIER_MASK`. The previous spelling of
835  `Class_::VISIBILITY_MODIFER_MASK` is preserved for backwards compatibility.
836* The pretty printing will now preserve comments inside array literals and function calls by
837  printing the array items / function arguments on separate lines. Array literals and functions that
838  do not contain comments are not affected.
839
840### Added
841
842* Added `Builder\Param::makeVariadic()`.
843
844### Deprecated
845
846* The `Node::setLine()` method has been deprecated.
847
848Version 3.0.5 (2017-03-05)
849--------------------------
850
851### Fixed
852
853* Name resolution of `NullableType`s is now performed earlier, so that a fully resolved signature is
854  available when a function is entered. (#360)
855* `Error` nodes are now considered empty, while previously they extended until the token where the
856  error occurred. This made some nodes larger than expected. (#359)
857* Fixed notices being thrown during error recovery in some situations. (#362)
858
859Version 3.0.4 (2017-02-10)
860--------------------------
861
862### Fixed
863
864* Fixed some extensibility issues in pretty printer (`pUseType()` is now public and `pPrec()` calls
865  into `p()`, instead of directly dispatching to the type-specific printing method).
866* Fixed notice in `bin/php-parse` script.
867
868### Added
869
870* Error recovery from missing semicolons is now supported in more cases.
871* Error recovery from trailing commas in positions where PHP does not support them is now supported.
872
873Version 3.0.3 (2017-02-03)
874--------------------------
875
876### Fixed
877
878* In `"$foo[0]"` the `0` is now parsed as an `LNumber` rather than `String`. (#325)
879* Ensure integers and floats are always pretty printed preserving semantics, even if the particular
880  value can only be manually constructed.
881* Throw a `LogicException` when trying to pretty-print an `Error` node. Previously this resulted in
882  an undefined method exception or fatal error.
883
884### Added
885
886* [PHP 7.1] Added support for negative interpolated offsets: `"$foo[-1]"`
887* Added `preserveOriginalNames` option to `NameResolver`. If this option is enabled, an
888  `originalName` attribute, containing the unresolved name, will be added to each resolved name.
889* Added `php-parse --with-positions` option, which dumps nodes with position information.
890
891### Deprecated
892
893* The XML serializer has been deprecated. In particular, the classes `Serializer\XML`,
894  `Unserializer\XML`, as well as the interfaces `Serializer` and `Unserializer` are deprecated.
895
896Version 3.0.2 (2016-12-06)
897--------------------------
898
899### Fixed
900
901* Fixed name resolution of nullable types. (#324)
902* Fixed pretty-printing of nullable types.
903
904Version 3.0.1 (2016-12-01)
905--------------------------
906
907### Fixed
908
909* Fixed handling of nested `list()`s: If the nested list was unkeyed, it was directly included in
910  the list items. If it was keyed, it was wrapped in `ArrayItem`. Now nested `List_` nodes are
911  always wrapped in `ArrayItem`s. (#321)
912
913Version 3.0.0 (2016-11-30)
914--------------------------
915
916### Added
917
918* Added support for dumping node positions in the NodeDumper through the `dumpPositions` option.
919* Added error recovery support for `$`, `new`, `Foo::`.
920
921Version 3.0.0-beta2 (2016-10-29)
922--------------------------------
923
924This release primarily improves our support for error recovery.
925
926### Added
927
928* Added `Node::setDocComment()` method.
929* Added `Error::getMessageWithColumnInfo()` method.
930* Added support for recovery from lexer errors.
931* Added support for recovering from "special" errors (i.e. non-syntax parse errors).
932* Added precise location information for lexer errors.
933* Added `ErrorHandler` interface, and `ErrorHandler\Throwing` and `ErrorHandler\Collecting` as
934  specific implementations. These provide a general mechanism for handling error recovery.
935* Added optional `ErrorHandler` argument to `Parser::parse()`, `Lexer::startLexing()` and
936  `NameResolver::__construct()`.
937* The `NameResolver` now adds a `namespacedName` attribute on name nodes that cannot be statically
938  resolved (unqualified unaliased function or constant names in namespaces).
939
940### Fixed
941
942* Fixed attribute assignment for `GroupUse` prefix and variables in interpolated strings.
943
944### Changed
945
946* The constants on `NameTraverserInterface` have been moved into the `NameTraverser` class.
947* Due to the error handling changes, the `Parser` interface and `Lexer` API have changed.
948* The emulative lexer now directly postprocesses tokens, instead of using `~__EMU__~` sequences.
949  This changes the protected API of the lexer.
950* The `Name::slice()` method now returns `null` for empty slices, previously `new Name([])` was
951  used. `Name::concat()` now also supports concatenation with `null`.
952
953### Removed
954
955* Removed `Name::append()` and `Name::prepend()`. These mutable methods have been superseded by
956  the immutable `Name::concat()`.
957* Removed `Error::getRawLine()` and `Error::setRawLine()`. These methods have been superseded by
958  `Error::getStartLine()` and `Error::setStartLine()`.
959* Removed support for node cloning in the `NodeTraverser`.
960* Removed `$separator` argument from `Name::toString()`.
961* Removed `throw_on_error` parser option and `Parser::getErrors()` method. Use the `ErrorHandler`
962  mechanism instead.
963
964Version 3.0.0-beta1 (2016-09-16)
965--------------------------------
966
967### Added
968
969* [7.1] Function/method and parameter builders now support PHP 7.1 type hints (void, iterable and
970  nullable types).
971* Nodes and Comments now implement `JsonSerializable`. The node kind is stored in a `nodeType`
972  property.
973* The `InlineHTML` node now has an `hasLeadingNewline` attribute, that specifies whether the
974  preceding closing tag contained a newline. The pretty printer honors this attribute.
975* Partial parsing of `$obj->` (with missing property name) is now supported in error recovery mode.
976* The error recovery mode is now exposed in the `php-parse` script through the `--with-recovery`
977  or `-r` flags.
978
979The following changes are also part of PHP-Parser 2.1.1:
980
981* The PHP 7 parser will now generate a parse error for `$var =& new Obj` assignments.
982* Comments on free-standing code blocks will now be retained as comments on the first statement in
983  the code block.
984
985Version 3.0.0-alpha1 (2016-07-25)
986---------------------------------
987
988### Added
989
990* [7.1] Added support for `void` and `iterable` types. These will now be represented as strings
991  (instead of `Name` instances) similar to other builtin types.
992* [7.1] Added support for class constant visibility. The `ClassConst` node now has a `flags` subnode
993  holding the visibility modifier, as well as `isPublic()`, `isProtected()` and `isPrivate()`
994  methods. The constructor changed to accept the additional subnode.
995* [7.1] Added support for nullable types. These are represented using a new `NullableType` node
996  with a single `type` subnode.
997* [7.1] Added support for short array destructuring syntax. This means that `Array` nodes may now
998  appear as the left-hand-side of assignments and foreach value targets. Additionally the array
999  items may now contain `null` values if elements are skipped.
1000* [7.1] Added support for keys in list() destructuring. The `List` subnode `vars` has been renamed
1001  to `items` and now contains `ArrayItem`s instead of plain variables.
1002* [7.1] Added support for multi-catch. The `Catch` subnode `type` has been renamed to `types` and
1003  is now an array of `Name`s.
1004* `Name::slice()` now supports lengths and negative offsets. This brings it in line with
1005  `array_slice()` functionality.
1006
1007### Changed
1008
1009Due to PHP 7.1 support additions described above, the node structure changed as follows:
1010
1011* `void` and `iterable` types are now stored as strings if the PHP 7 parser is used.
1012* The `ClassConst` constructor changed to accept an additional `flags` subnode.
1013* The `Array` subnode `items` may now contain `null` elements (destructuring).
1014* The `List` subnode `vars` has been renamed to `items` and now contains `ArrayItem`s instead of
1015  plain variables.
1016* The `Catch` subnode `type` has been renamed to `types` and is now an array of `Name`s.
1017
1018Additionally the following changes were made:
1019
1020* The `type` subnode on `Class`, `ClassMethod` and `Property` has been renamed to `flags`. The
1021  `type` subnode has retained for backwards compatibility and is populated to the same value as
1022  `flags`. However, writes to `type` will not update `flags`.
1023* The `TryCatch` subnode `finallyStmts` has been replaced with a `finally` subnode that holds an
1024  explicit `Finally` node. This allows for more accurate attribute assignment.
1025* The `Trait` constructor now has the same form as the `Class` and `Interface` constructors: It
1026  takes an array of subnodes. Unlike classes/interfaces, traits can only have a `stmts` subnode.
1027* The `NodeDumper` now prints class/method/property/constant modifiers, as well as the include and
1028  use type in a textual representation, instead of only showing the number.
1029* All methods on `PrettyPrinter\Standard` are now protected. Previously most of them were public.
1030
1031### Removed
1032
1033* Removed support for running on PHP 5.4. It is however still possible to parse PHP 5.2-5.4 code
1034  while running on a newer version.
1035* The deprecated `Comment::setLine()` and `Comment::setText()` methods have been removed.
1036* The deprecated `Name::set()`, `Name::setFirst()` and `Name::setLast()` methods have been removed.
1037
1038Version 2.1.1 (2016-09-16)
1039--------------------------
1040
1041### Changed
1042
1043* The pretty printer will now escape all control characters in the range `\x00-\x1F` inside double
1044  quoted strings. If no special escape sequence is available, an octal escape will be used.
1045* The quality of the error recovery has been improved. In particular unterminated expressions should
1046  be handled more gracefully.
1047* The PHP 7 parser will now generate a parse error for `$var =& new Obj` assignments.
1048* Comments on free-standing code blocks will no be retained as comments on the first statement in
1049  the code block.
1050
1051Version 2.1.0 (2016-04-19)
1052--------------------------
1053
1054### Fixed
1055
1056* Properly support `B""` strings (with uppercase `B`) in a number of places.
1057* Fixed reformatting of indented parts in a certain non-standard comment style.
1058
1059### Added
1060
1061* Added `dumpComments` option to node dumper, to enable dumping of comments associated with nodes.
1062* Added `Stmt\Nop` node, that is used to collect comments located at the end of a block or at the
1063  end of a file (without a following node with which they could otherwise be associated).
1064* Added `kind` attribute to `Expr\Exit` to distinguish between `exit` and `die`.
1065* Added `kind` attribute to `Scalar\LNumber` to distinguish between decimal, binary, octal and
1066  hexadecimal numbers.
1067* Added `kind` attribute to `Expr\Array` to distinguish between `array()` and `[]`.
1068* Added `kind` attribute to `Scalar\String` and `Scalar\Encapsed` to distinguish between
1069  single-quoted, double-quoted, heredoc and nowdoc string.
1070* Added `docLabel` attribute to `Scalar\String` and `Scalar\Encapsed`, if it is a heredoc or
1071  nowdoc string.
1072* Added start file offset information to `Comment` nodes.
1073* Added `setReturnType()` method to function and method builders.
1074* Added `-h` and `--help` options to `php-parse` script.
1075
1076### Changed
1077
1078* Invalid octal literals now throw a parse error in PHP 7 mode.
1079* The pretty printer takes all the new attributes mentioned in the previous section into account.
1080* The protected `AbstractPrettyPrinter::pComments()` method no longer returns a trailing newline.
1081* The bundled autoloader supports library files being stored in a different directory than
1082  `PhpParser` for easier downstream distribution.
1083
1084### Deprecated
1085
1086* The `Comment::setLine()` and `Comment::setText()` methods have been deprecated. Construct new
1087  objects instead.
1088
1089### Removed
1090
1091* The internal (but public) method `Scalar\LNumber::parse()` has been removed. A non-internal
1092  `LNumber::fromString()` method has been added instead.
1093
1094Version 2.0.1 (2016-02-28)
1095--------------------------
1096
1097### Fixed
1098
1099* `declare() {}` and `declare();` are not semantically equivalent and will now result in different
1100  ASTs. The format case will have an empty `stmts` array, while the latter will set `stmts` to
1101  `null`.
1102* Magic constants are now supported as semi-reserved keywords.
1103* A shebang line like `#!/usr/bin/env php` is now allowed at the start of a namespaced file.
1104  Previously this generated an exception.
1105* The `prettyPrintFile()` method will not strip a trailing `?>` from the raw data that follows a
1106  `__halt_compiler()` statement.
1107* The `prettyPrintFile()` method will not strip an opening `<?php` if the file starts with a
1108  comment followed by InlineHTML.
1109
1110Version 2.0.0 (2015-12-04)
1111--------------------------
1112
1113### Changed
1114
1115* String parts of encapsed strings are now represented using `Scalar\EncapsStringPart` nodes.
1116  Previously raw strings were used. This affects the `parts` child of `Scalar\Encaps` and
1117  `Expr\ShellExec`. The change has been done to allow assignment of attributes to encapsed string
1118  parts.
1119
1120Version 2.0.0-beta1 (2015-10-21)
1121--------------------------------
1122
1123### Fixed
1124
1125* Fixed issue with too many newlines being stripped at the end of heredoc/nowdoc strings in some
1126  cases. (#227)
1127
1128### Changed
1129
1130* Update group use support to be in line with recent PHP 7.0 builds.
1131* Renamed `php-parse.php` to `php-parse` and registered it as a composer bin.
1132* Use composer PSR-4 autoloader instead of custom autoloader.
1133* Specify phpunit as a dev dependency.
1134
1135### Added
1136
1137* Added `shortArraySyntax` option to pretty printer, to print all arrays using short syntax.
1138
1139Version 2.0.0-alpha1 (2015-07-14)
1140---------------------------------
1141
1142A more detailed description of backwards incompatible changes can be found in the
1143[upgrading guide](UPGRADE-2.0.md).
1144
1145### Removed
1146
1147* Removed support for running on PHP 5.3. It is however still possible to parse PHP 5.2 and PHP 5.3
1148  code while running on a newer version.
1149* Removed legacy class name aliases. This includes the old non-namespaced class names and the old
1150  names for classes that were renamed for PHP 7 compatibility.
1151* Removed support for legacy node format. All nodes must have a `getSubNodeNames()` method now.
1152
1153### Added
1154
1155* Added support for remaining PHP 7 features that were not present in 1.x:
1156  * Group use declarations. These are represented using `Stmt\GroupUse` nodes. Furthermore a `type`
1157    attribute was added to `Stmt\UseUse` to handle mixed group use declarations.
1158  * Uniform variable syntax.
1159  * Generalized yield operator.
1160  * Scalar type declarations. These are presented using `'bool'`, `'int'`, `'float'` and `'string'`
1161    as the type. The PHP 5 parser also accepts these, however they'll be `Name` instances there.
1162  * Unicode escape sequences.
1163* Added `PhpParser\ParserFactory` class, which should be used to create parser instances.
1164* Added `Name::concat()` which concatenates two names.
1165* Added `Name->slice()` which takes a subslice of a name.
1166
1167### Changed
1168
1169* `PhpParser\Parser` is now an interface, implemented by `Parser\Php5`, `Parser\Php7` and
1170  `Parser\Multiple`. The `Multiple` parser will try multiple parsers, until one succeeds.
1171* Token constants are now defined on `PhpParser\Parser\Tokens` rather than `PhpParser\Parser`.
1172* The `Name->set()`, `Name->append()`, `Name->prepend()` and `Name->setFirst()` methods are
1173  deprecated in favor of `Name::concat()` and `Name->slice()`.
1174* The `NodeTraverser` no longer clones nodes by default. The old behavior can be restored by
1175  passing `true` to the constructor.
1176* The constructor for `Scalar` nodes no longer has a default value. E.g. `new LNumber()` should now
1177  be written as `new LNumber(0)`.
1178
1179---
1180
1181**This changelog only includes changes from the 2.0 series. For older changes see the
1182[1.x series changelog](https://github.com/nikic/PHP-Parser/blob/1.x/CHANGELOG.md) and the
1183[0.9 series changelog](https://github.com/nikic/PHP-Parser/blob/0.9/CHANGELOG.md).**
1184