Update CHANGELOG.md
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David Majda
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CHANGELOG.md
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CHANGELOG.md
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0.8.0
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-----
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Released: December 24, 2013
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### Big Changes
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* Completely rewrote the code generator. Among other things, it allows
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optimizing generated parsers for parsing speed or code size using the
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`optimize` option of the `PEG.buildParser` method or the `--optimize`/`-o`
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option on the command-line. All internal identifiers in generated code now
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also have a `peg$` prefix to discourage their use and avoid conflicts.
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[[#35](https://github.com/dmajda/pegjs/issues/35),
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[#92](https://github.com/dmajda/pegjs/issues/92)]
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* Completely redesigned error handling. Instead of returning `null` inside
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actions to indicate match failure, new `expected` and `error` functions can
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be called to trigger an error. Also, expectation inside the `SyntaxError`
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exceptions are now structured to allow easier machine processing.
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[[#198](https://github.com/dmajda/pegjs/issues/198)]
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* Implemented a plugin API. The list of plugins to use can be specified using
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the `plugins` option of the `PEG.buildParser` method or the `--plugin`
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option on the command-line. Also implemented the `--extra-options` and
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`--extra-options-file` command-line options, which are mainly useful to pass
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additional options to plugins.
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[[#106](https://github.com/dmajda/pegjs/issues/106)]
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* Made `offset`, `line` and `column` functions, not variables. They are now
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available in all parsers and return lazily-computed position data. Removed
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now useless `trackLineAndColumn` option of the `PEG.buildParser` method and
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the `--track-line-and-column` option on the command-line.
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* Added a new `text` function. When called inside an action, it returns the
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text matched by action's expression.
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[[#131](https://github.com/dmajda/pegjs/issues/131)]
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* Added a new `$` operator. It extracts matched strings from expressions.
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* The `?` operator now returns `null` on unsuccessful match.
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* Predicates now always return `undefined`.
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* Replaced the `startRule` parameter of the `parse` method in generated
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parsers with more generic `options` parameter. The start rule can now be
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specified as the `startRule` option. The `options` parameter can be also
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used to pass custom options to the parser because it is visible as the
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`options` variable inside parser code.
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[[#37](https://github.com/dmajda/pegjs/issues/37)]
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* The list of allowed start rules of a generated parser now has to be
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specified explicitly using the `allowedStartRules` option of the
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`PEG.buildParser` method or the `--allowed-start-rule` option on the
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command-line. This will make certain optimizations like rule inlining easier
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in the future.
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* Removed the `toSource` method of generated parsers and introduced a new
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`output` option of the `PEG.buildParser` method. It allows callers to
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specify whether they want to get back the parser object or its source code.
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* The source code is now a valid npm package. This makes using development
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versions easier.
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[[#32](https://github.com/dmajda/pegjs/issues/32)]
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* Generated parsers are now ~25% faster and ~62%/~3% smaller (when optimized
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for size/speed) than those generated by 0.7.0.
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* Requires Node.js 0.8.0+.
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### Small Changes
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* `bin/pegjs` now outputs just the parser source if the value of the
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`--export-var` option is empty. This makes embedding generated parsers into
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other files easier.
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[[#143](https://github.com/dmajda/pegjs/issues/143)]
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* Changed the value of the `name` property of `PEG.GrammarError` instances
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from “PEG.GrammarError” to just “GrammarError”. This better reflects the
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fact that PEG.js can get required with different variable name than `PEG`.
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* Setup prototype chain for `PEG.GrammarError` correctly.
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* Setup prototype chain for `SyntaxError` in generated parsers correctly.
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* Fixed error messages in certain cases with trailing input
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[[#119](https://github.com/dmajda/pegjs/issues/119)]
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* Fixed code generated for classes starting with `\^`.
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[[#125](https://github.com/dmajda/pegjs/issues/125)]
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* Fixed too eager proxy rules removal.
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[[#137](https://github.com/dmajda/pegjs/issues/137)]
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* Added a license to all vendored libraries.
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[[#207](https://github.com/dmajda/pegjs/issues/207)]
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* Converted the test suite from QUnit to Jasmine, cleaning it up on the way.
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* Travis CI integration.
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* Various internal code improvements and fixes.
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* Various generated code improvements and fixes.
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* Various example grammar improvements and fixes.
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* Improved `README.md`.
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* Converted `CHANGELOG` to Markdown.
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0.7.0
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-----
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