# Changelog

All notable changes to this project will be documented in this file.
This project adheres to [Semantic Versioning](https://semver.org/).

Please also have a look at our
[API and deprecation policy](docs/API-and-deprecation-policy.md).

## x.y.z

### Added

### Changed

### Deprecated

### Removed

### Fixed

### Documentation

## 9.4.0: Deprecations and bugfixes

### Deprecated

- Deprecate support for PHP 7.2 and 7.3 (#1565)

### Fixed

- Allow CSS containing only whitespace or comments (#1593)
- Only allow strings as `LineName` components (#1590)

## 9.3.0: Support for modern CSS at-rules and autoloading bugfix

### Added

- Add support for modern CSS at-rules: `@layer`, `@scope`, and
  `@starting-style` (#1549)

### Fixed

- Avoid double autoloading of class aliases (#1552)

### Documentation

## 9.2.0: New features and deprecations

### Added

- Add `OutputFormat::setSpaceAroundSelectorCombinator()` (#1504)
- Add support for escaped quotes in the selectors (#1485, #1489)
- Provide line number in exception message for mismatched parentheses in
  selector (#1435)
- Add support for CSS container queries (#1400)

### Changed

- `RuleSet\RuleContainer` is renamed to `RuleSet\DeclarationList` (#1530, #1539)
- Methods like `setRule()` in `RuleSet` and `DeclarationBlock` have been renamed
  to `setDeclaration()`, etc. (#1521)
- `Rule\Rule` class is renamed to `Property\Declaration`
  (#1508, #1512, #1513, #1522)
- `Rule::setRule()` and `getRule()` are replaced with `setPropertyName()` and
  `getPropertyName()` (#1506)
- `Selector` is now represented as a sequence of `Selector\Component` objects
  which can be accessed via `getComponents()`, manipulated individually, or set
  via `setComponents()` (#1478, #1486, #1487, #1488, #1494, #1496, #1536, #1537)
- `Selector::setSelector()` and `Selector` constructor will now throw exception
  upon provision of an invalid selectior (#1498, #1502)
- Clean up extra whitespace in CSS selector (#1398)
- The array keys passed to `DeclarationBlock::setSelectors()` are no longer
  preserved (#1407)

### Deprecated

- `RuleSet\RuleContainer` is deprecated; use `RuleSet\DeclarationList` instead
  (#1530)
- Methods like `setRule()` in `RuleSet` and `DeclarationBlock` are deprecated;
  there are direct replacements such as `setDeclaration()` (#1521)
- `Rule\Rule` class is deprecated; `Property\Declaration` is a direct
  replacement (#1508)
- `Rule::setRule()` and `getRule()` are deprecated and replaced with
  `setPropertyName()` and `getPropertyName()` (#1506, #1519)

### Fixed

- Do not escape characters that do not need escaping in CSS string (#1444)
- Reject selector comprising only whitespace (#1433)
- Improve recovery parsing when a rogue `}` is encountered (#1425, #1426)
- Parse comment(s) immediately preceding a selector (#1421, #1424)
- Parse consecutive comments (#1421)
- Support attribute selectors with values containing commas in
  `DeclarationBlock::setSelectors()` (#1419)
- Allow `removeDeclarationBlockBySelector()` to be order-insensitve (#1406)
- Fix parsing of `calc` expressions when a newline immediately precedes or
  follows a `+` or `-` operator (#1399)
- Use typesafe versions of PHP functions (#1379, #1380, #1382, #1383, #1384)

## 9.1.0: Add support for PHP 8.5

### Added

- Add support for PHP 8.5 (#1355)

### Fixed

- Improve performance of selector validation
  (avoiding silent PCRE catastrophic failure) (#1372)
- Use typesafe versions of PHP functions (#1368, #1370)

## 9.0.0: New features, deprecation removals and bug fixes

### Added

- Interface `RuleContainer` for `RuleSet` `Rule` manipulation methods (#1256)
- Partial support for CSS Color Module Level 4:
    - `rgb` and `rgba`, and `hsl` and `hsla` are now aliases (#797)
    - Parse color functions that use the "modern" syntax (#800)
    - Render RGB functions with "modern" syntax when required (#840)
    - Support `none` as color function component value (#859)
- Add a class diagram to the README (#482)
- Add more tests (#449)

### Changed

- `DeclarationBlock` no longer extends `RuleSet` and instead has a `RuleSet` as
  a property; use `getRuleSet()` to access it directly (#1194)
- The default line (and column) number is now `null` (not zero) (#1288)
- `setPosition()` (in `Rule` and other classes) now has fluent interface,
  returning itself (#1259)
- `RuleSet::removeRule()` now only allows `Rule` as the parameter
  (implementing classes are `AtRuleSet` and `DeclarationBlock`);
  use `removeMatchingRules()` or `removeAllRules()` for other functions (#1255)
- `RuleSet::getRules()` and `getRulesAssoc()` now only allow `string` or `null`
  as the parameter (implementing classes are `AtRuleSet` and `DeclarationBlock`)
  (#1253)
- Initialize `KeyFrame` properties to sensible defaults (#1146)
- Make `OutputFormat` `final` (#1128)
- Make `Selector` a `Renderable` (#1017)
- Only allow `string` for some `OutputFormat` properties (#885)
- Use more native type declarations and strict mode
  (#641, #772, #774, #778, #804, #841, #873, #875, #891, #922, #923, #933, #958,
  #964, #967, #1000, #1044, #1134, #1136, #1137, #1139, #1140, #1141, #1145,
  #1162, #1163, #1166, #1172, #1174, #1178, #1179, #1181, #1183, #1184, #1186,
  #1187, #1190, #1192, #1193, #1203)
- Add visibility to all class/interface constants (#469)

### Removed

- Remove `getLineNo()` from these classes (use `getLineNumber()` instead):
  `Comment`, `CSSList`, `SourceException`, `Charset`, `CSSNamespace`, `Import`,
  `Rule`, `DeclarationBlock`, `RuleSet`, `CSSFunction`, `Value` (#1258)
- Remove `Rule::getColNo()` (use `getColumnNumber()` instead) (#1287)
- Passing a string as the first argument to `getAllValues()` is no longer
  supported and will not work;
  the search pattern should now be passed as the second argument (#1243)
- Passing a Boolean as the second argument to `getAllValues()` is no longer
  supported and will not work; the flag for searching in function arguments
  should now be passed as the third argument (#1243)
- Remove `__toString()` (#1046)
- Drop magic method forwarding in `OutputFormat` (#898)
- Drop `atRuleArgs()` from the `AtRule` interface (#1141)
- Remove `OutputFormat::get()` and `::set()` (#1108, #1110)
- Drop special support for vendor prefixes (#1083)
- Remove the IE hack in `Rule` (#995)
- Drop `getLineNo()` from the `Renderable` interface (#1038)
- Remove `OutputFormat::level()` (#874)
- Remove expansion of shorthand properties (#838)
- Remove `Parser::setCharset/getCharset` (#808)
- Remove `Rule::getValues()` (#582)
- Remove `Rule::setValues()` (#562)
- Remove `Document::getAllSelectors()` (#561)
- Remove `DeclarationBlock::getSelector()` (#559)
- Remove `DeclarationBlock::setSelector()` (#560)
- Drop support for PHP < 7.2 (#420)

### Fixed

- Remove trailing semicolon from declaration blocks with 'compact'
  `OutputFormat` (#1345)
- Parse selector functions (like `:not`) with comma-separated arguments (#1292)
- Parse quoted attribute selector value containing comma (#1323)
- Allow comma in selectors (e.g. `:not(html, body)`) (#1293)
- Insert `Rule` before sibling even with different property name
  (in `RuleSet::addRule()`) (#1270)
- Ensure `RuleSet::addRule()` sets non-negative column number when sibling
  provided (#1268)
- Don't render `rgb` colors with percentage values using hex notation (#803)

### Documentation

- Add an API and deprecation policy (#720)

@ziegenberg is a new contributor to this release and did a lot of the heavy
lifting. Thanks! :heart:

## 8.9.0: New features, bug fixes and deprecations

### Added

- `RuleSet::removeMatchingRules()` method
  (for the implementing classes `AtRuleSet` and `DeclarationBlock`) (#1249)
- `RuleSet::removeAllRules()` method
  (for the implementing classes `AtRuleSet` and `DeclarationBlock`) (#1249)
- Add Interface `CSSElement` (#1231)
- Methods `getLineNumber` and `getColumnNumber` which return a nullable `int`
  for the following classes:
  `Comment`, `CSSList`, `SourceException`, `Charset`, `CSSNamespace`, `Import`,
  `Rule`, `DeclarationBlock`, `RuleSet`, `CSSFunction`, `Value` (#1225, #1263)
- `Positionable` interface for CSS items that may have a position
  (line and perhaps column number) in the parsed CSS (#1221)

### Changed

- Parameters for `getAllValues()` are deconflated, so it now takes three (all
  optional), allowing `$element` and `$ruleSearchPattern` to be specified
  separately (#1241)
- Implement `Positionable` in the following CSS item classes:
  `Comment`, `CSSList`, `SourceException`, `Charset`, `CSSNamespace`, `Import`,
  `Rule`, `DeclarationBlock`, `RuleSet`, `CSSFunction`, `Value` (#1225)

### Deprecated

- Support for PHP < 7.2 is deprecated; version 9.0 will require PHP 7.2 or later
  (#1264)
- Passing a `string` or `null` to `RuleSet::removeRule()` is deprecated
  (implementing classes are `AtRuleSet` and `DeclarationBlock`);
  use `removeMatchingRules()` or `removeAllRules()` instead (#1249)
- Passing a `Rule` to `RuleSet::getRules()` or `getRulesAssoc()` is deprecated,
  affecting the implementing classes `AtRuleSet` and `DeclarationBlock`
  (call e.g. `getRules($rule->getRule())` instead) (#1248)
- Passing a string as the first argument to `getAllValues()` is deprecated;
  the search pattern should now be passed as the second argument (#1241)
- Passing a Boolean as the second argument to `getAllValues()` is deprecated;
  the flag for searching in function arguments should now be passed as the third
  argument (#1241)
- `getLineNo()` is deprecated in these classes (use `getLineNumber()` instead):
  `Comment`, `CSSList`, `SourceException`, `Charset`, `CSSNamespace`, `Import`,
  `Rule`, `DeclarationBlock`, `RuleSet`, `CSSFunction`, `Value` (#1225, #1233)
- `Rule::getColNo()` is deprecated (use `getColumnNumber()` instead)
  (#1225, #1233)
- Providing zero as the line number argument to `Rule::setPosition()` is
  deprecated (pass `null` instead if there is no line number) (#1225, #1233)

### Fixed

- Set line number when `RuleSet::addRule()` called with only column number set
  (#1265)
- Ensure first rule added with `RuleSet::addRule()` has valid position (#1262)

## 8.8.0: Bug fixes and deprecations

### Added

- `OutputFormat` properties for space around specific list separators (#880)

### Changed

- Mark the `OutputFormat` constructor as `@internal` (#1131)
- Mark `OutputFormatter` as `@internal` (#896)
- Mark `Selector::isValid()` as `@internal` (#1037)
- Mark parsing-related methods of most CSS elements as `@internal` (#908)
- Mark `OutputFormat::nextLevel()` as `@internal` (#901)
- Make all non-private properties `@internal` (#886)

### Deprecated

- Deprecate extending `OutputFormat` (#1131)
- Deprecate `OutputFormat::get()` and `::set()` (#1107)
- Deprecate support for `-webkit-calc` and `-moz-calc` (#1086)
- Deprecate magic method forwarding from `OutputFormat` to `OutputFormatter`
  (#894)
- Deprecate `__toString()` (#1006)
- Deprecate greedy calculation of selector specificity (#1018)
- Deprecate the IE hack in `Rule` (#993, #1003)
- `OutputFormat` properties for space around list separators as an array (#880)
- Deprecate `OutputFormat::level()` (#870)

### Fixed

- Include comments for all rules in declaration block (#1169)
- Render rules in line and column number order (#1059)
- Create `Size` with correct types in `expandBackgroundShorthand` (#814)
- Parse `@font-face` `src` property as comma-delimited list (#794)

## 8.7.0: Add support for PHP 8.4

### Added

- Add support for PHP 8.4 (#643, #657)

### Changed

- Mark parsing-internal classes and methods as `@internal` (#674)
- Block installations on unsupported higher PHP versions (#691)

### Deprecated

- Deprecate the expansion of shorthand properties
  (#578, #580, #579, #577, #576, #575, #574, #573, #572, #571, #570, #569, #566,
  #567, #558, #714)
- Deprecate `Parser::setCharset()` and `Parser::getCharset()` (#688)

### Fixed

- Fix type errors in PHP strict mode (#664)

## 8.6.0

### Added

- Support arithmetic operators in CSS function arguments (#607)
- Add support for inserting an item in a CSS list (#545)
- Add support for the `dvh`, `lvh` and `svh` length units (#415)

### Changed

- Improve performance of `Value::parseValue` with many delimiters by refactoring
  to remove `array_search()` (#413)

## 8.5.2

### Changed

- Mark all class constants as `@internal` (#472)

### Fixed

- Fix undefined local variable in `CalcFunction::parse()` (#593)

## 8.5.1

### Fixed

- Fix PHP notice caused by parsing invalid color values having less than
  6 characters (#485)
- Fix (regression) failure to parse at-rules with strict parsing (#456)

## 8.5.0

### Added

- Add a method to get an import's media queries (#384)
- Add more unit tests (#381, #382)

### Fixed

- Retain CSSList and Rule comments when rendering CSS (#351)
- Replace invalid `turns` unit with `turn` (#350)
- Also allow string values for rules (#348)
- Fix invalid calc parsing (#169)
- Handle scientific notation when parsing sizes (#179)
- Fix PHP 8.1 compatibility in `ParserState::strsplit()` (#344)

## 8.4.0

### Features

* Support for PHP 8.x
* PHPDoc annotations
* Allow usage of CSS variables inside color functions (by parsing them as
  regular functions)
* Use PSR-12 code style
* *No deprecations*

### Bugfixes

* Improved handling of whitespace in `calc()`
* Fix parsing units whose prefix is also a valid unit, like `vmin`
* Allow passing an object to `CSSList#replace`
* Fix PHP 7.3 warnings
* Correctly parse keyframes with `%`
* Don’t convert large numbers to scientific notation
* Allow a file to end after an `@import`
* Preserve case of CSS variables as specced
* Allow identifiers to use escapes the same way as strings
* No longer use `eval` for the comparison in `getSelectorsBySpecificity`, in
  case it gets passed untrusted input (CVE-2020-13756). Also fixed in 8.3.1,
  8.2.1, 8.1.1, 8.0.1, 7.0.4, 6.0.2, 5.2.1, 5.1.3, 5.0.9, 4.0.1, 3.0.1, 2.0.1,
  1.0.1.
* Prevent an infinite loop when parsing invalid grid line names
* Remove invalid unit `vm`
* Retain rule order after expanding shorthands

### Backwards-incompatible changes

* PHP ≥ 5.6 is now required
* HHVM compatibility target dropped

## 8.3.0 (2019-02-22)

* Refactor parsing logic to mostly reside in the class files whose data
  structure is to be parsed (this should eventually allow us to unit-test
  specific parts of the parsing logic individually).
* Fix error in parsing `calc` expessions when the first operand is a negative
  number, thanks to @raxbg.
* Support parsing CSS4 colors in hex notation with alpha values, thanks to
  @raxbg.
* Swallow more errors in lenient mode, thanks to @raxbg.
* Allow specifying arbitrary strings to output before and after declaration
  blocks, thanks to @westonruter.
* *No backwards-incompatible changes*
* *No deprecations*

## 8.2.0 (2018-07-13)

* Support parsing `calc()`, thanks to @raxbg.
* Support parsing grid-lines, again thanks to @raxbg.
* Support parsing legacy IE filters (`progid:`) in lenient mode, thanks to
  @FMCorz
* Performance improvements parsing large files, again thanks to @FMCorz
* *No backwards-incompatible changes*
* *No deprecations*

## 8.1.0 (2016-07-19)

* Comments are no longer silently ignored but stored with the object with which
  they appear (no render support, though). Thanks to @FMCorz.
* The IE hacks using `\0` and `\9` can now be parsed (and rendered) in lenient
  mode. Thanks (again) to @FMCorz.
* Media queries with or without spaces before the query are parsed. Still no
  *real* parsing support, though. Sorry…
* PHPUnit is now listed as a dev-dependency in composer.json.
* *No backwards-incompatible changes*
* *No deprecations*

## 8.0.0 (2016-06-30)

* Store source CSS line numbers in tokens and parsing exceptions.
* *No deprecations*

### Backwards-incompatible changes

* Unrecoverable parser errors throw an exception of type
  `Sabberworm\CSS\Parsing\SourceException` instead of `\Exception`.

## 7.0.3 (2016-04-27)

* Fixed parsing empty CSS when multibyte is off
* *No backwards-incompatible changes*
* *No deprecations*

## 7.0.2 (2016-02-11)

* 150 time performance boost thanks
  to @[ossinkine](https://github.com/ossinkine)
* *No backwards-incompatible changes*
* *No deprecations*

## 7.0.1 (2015-12-25)

* No more suppressed `E_NOTICE`
* *No backwards-incompatible changes*
* *No deprecations*

## 7.0.0 (2015-08-24)

* Compatibility with PHP 7. Well timed, eh?
* *No deprecations*

### Backwards-incompatible changes

* The `Sabberworm\CSS\Value\String` class has been renamed to
  `Sabberworm\CSS\Value\CSSString`.

## 6.0.1 (2015-08-24)

* Remove some declarations in interfaces incompatible with PHP 5.3 (< 5.3.9)
* *No deprecations*

## 6.0.0 (2014-07-03)

* Format output using Sabberworm\CSS\OutputFormat
* *No backwards-incompatible changes*

### Deprecations

* The parse() method replaces __toString with an optional argument (instance of
  the OutputFormat class)

## 5.2.0 (2014-06-30)

* Support removing a selector from a declaration block using
  `$oBlock->removeSelector($mSelector)`
* Introduce a specialized exception (Sabberworm\CSS\Parsing\OuputException) for
  exceptions during output rendering

* *No deprecations*

#### Backwards-incompatible changes

* Outputting a declaration block that has no selectors throws an OuputException
  instead of outputting an invalid ` {…}` into the CSS document.

## 5.1.2 (2013-10-30)

* Remove the use of consumeUntil in comment parsing. This makes it possible to
  parse comments such as `/** Perfectly valid **/`
* Add fr relative size unit
* Fix some issues with HHVM
* *No backwards-incompatible changes*
* *No deprecations*

## 5.1.1 (2013-10-28)

* Updated CHANGELOG.md to reflect changes since 5.0.4
* *No backwards-incompatible changes*
* *No deprecations*

## 5.1.0 (2013-10-24)

* Performance enhancements by Michael M Slusarz
* More rescue entry points for lenient parsing (unexpected tokens between
  declaration blocks and unclosed comments)
* *No backwards-incompatible changes*
* *No deprecations*

## 5.0.8 (2013-08-15)

* Make default settings’ multibyte parsing option dependent on whether or not
  the mbstring extension is actually installed.
* *No backwards-incompatible changes*
* *No deprecations*

## 5.0.7 (2013-08-04)

* Fix broken decimal point output optimization
* *No backwards-incompatible changes*
* *No deprecations*

## 5.0.6 (2013-05-31)

* Fix broken unit test
* *No backwards-incompatible changes*
* *No deprecations*

## 5.0.5 (2013-04-17)

* Initial support for lenient parsing (setting this parser option will catch
  some exceptions internally and recover the parser’s state as neatly as
  possible).
* *No backwards-incompatible changes*
* *No deprecations*

## 5.0.4 (2013-03-21)

* Don’t output floats with locale-aware separator chars
* *No backwards-incompatible changes*
* *No deprecations*

## 5.0.3 (2013-03-21)

* More size units recognized
* *No backwards-incompatible changes*
* *No deprecations*

## 5.0.2 (2013-03-21)

* CHANGELOG.md file added to distribution
* *No backwards-incompatible changes*
* *No deprecations*

## 5.0.1 (2013-03-20)

* Internal cleanup
* *No backwards-incompatible changes*
* *No deprecations*

## 5.0.0 (2013-03-20)

* Correctly parse all known CSS 3 units (including Hz and kHz).
* Output RGB colors in short (#aaa or #ababab) notation
* Be case-insensitive when parsing identifiers.
* *No deprecations*

### Backwards-incompatible changes

* `Sabberworm\CSS\Value\Color`’s `__toString` method overrides `CSSList`’s to
  maybe return something other than `type(value, …)` (see above).

## 4.0.0 (2013-03-19)

* Support for more @-rules
* Generic interface `Sabberworm\CSS\Property\AtRule`, implemented by all @-rule
  classes
* *No deprecations*

### Backwards-incompatible changes

* `Sabberworm\CSS\RuleSet\AtRule` renamed to `Sabberworm\CSS\RuleSet\AtRuleSet`
* `Sabberworm\CSS\CSSList\MediaQuery` renamed to
  `Sabberworm\CSS\RuleSet\CSSList\AtRuleBlockList` with differing semantics and
  API (which also works for other block-list-based @-rules like `@supports`).

## 3.0.0 (2013-03-06)

* Support for lenient parsing (on by default)
* *No deprecations*

### Backwards-incompatible changes

* All properties (like whether or not to use `mb_`-functions, which default
  charset to use and – new – whether or not to be forgiving when parsing) are
  now encapsulated in an instance of `Sabberworm\CSS\Settings` which can be
  passed as the second argument to `Sabberworm\CSS\Parser->__construct()`.
* Specifying a charset as the second argument to
  `Sabberworm\CSS\Parser->__construct()` is no longer supported. Use
  `Sabberworm\CSS\Settings::create()->withDefaultCharset('some-charset')`
  instead.
* Setting `Sabberworm\CSS\Parser->bUseMbFunctions` has no effect. Use
  `Sabberworm\CSS\Settings::create()->withMultibyteSupport(true/false)` instead.
* `Sabberworm\CSS\Parser->parse()` may throw a
  `Sabberworm\CSS\Parsing\UnexpectedTokenException` when in strict parsing mode.

## 2.0.0 (2013-01-29)

* Allow multiple rules of the same type per rule set

### Backwards-incompatible changes

* `Sabberworm\CSS\RuleSet->getRules()` returns an index-based array instead of
  an associative array. Use `Sabberworm\CSS\RuleSet->getRulesAssoc()` (which
  eliminates duplicate rules and lets the later rule of the same name win).
* `Sabberworm\CSS\RuleSet->removeRule()` works as it did before except when
  passed an instance of `Sabberworm\CSS\Rule\Rule`, in which case it would only
  remove the exact rule given instead of all the rules of the same type. To get
  the old behaviour, use `Sabberworm\CSS\RuleSet->removeRule($oRule->getRule()`;

## 1.0

Initial release of a stable public API.

## 0.9

Last version not to use PSR-0 project organization semantics.
