626 Commits (b271d6644216228af6260151328aebdb269b7942)
 

Author SHA1 Message Date
David Majda b271d66442 JavaScript example: Fix automatic semicolon insertion
Fix parsing of inputs like this:

  foo() // comment
  bar()
11 years ago
David Majda c70c8551b4 JavaScript example: Fix parsing of statements
Fixes a problem where statements starting with a reserved word produced
errors like this:

  Reserved word "return" can't be used as an identifier.

The problem was in a wrong ordering of choices in the |Statement| rule
together with aggressive reserved word detection in the |Identifier|
rule.
11 years ago
David Majda e78ffbba9c PEG.js grammar: Improve the |Code| rule a bit
Instead of matching segments between blocks character by character,
match them as a whole. Also align the style with other similar rules
(e.g. the comment ones).
11 years ago
David Majda 64eb5faf54 PEG.js grammar: Fix line continuation handling in character classes
Before this commit, line continuations in character classes contributed
an empty string to the list of characters and character ranges matched
by a class. While this didn't lead to a buggy behavior with the current
code generator, the AST was wrong and the problem could have caused bugs
later.

This commit fixes the problem.
11 years ago
David Majda 0678bd8a0c PEG.js grammar: Add missing semicolon
Fixes the following JSHint error:

  lib/parser.js: line 108, col 54, Missing semicolon.
11 years ago
David Majda 421b8d6e51 Clean up parser specs 11 years ago
David Majda cf294ef236 PEG.js grammar: Add limitations
The limitations are inherited from the JavaScript example grammar.
11 years ago
David Majda 0459ab6b37 PEG.js grammar: Formatting & comments 11 years ago
David Majda 6f2510e49e PEG.js grammar: Make rules with operators more generic 11 years ago
David Majda 45c29a886f PEG.js grammar: Extract the |SemanticPredicateExpression| rule
Semantic predicates are kind of |PrimaryExpression|, not kind of
|PrefixedExpression|. Therefore I extracted a rule for them and
referenced it from the |PrimaryExpression|.
11 years ago
David Majda da18f6a729 PEG.js grammar: Extract the |RuleReferenceExpression| rule
This makes the |Primary| rule a bit more tidy.
11 years ago
David Majda 8e6f98e45c PEG.js grammar: Extract the |ActionExpression| rule
Having it separated from the |SequenceExpression| rule is cleaner and
more logical.
11 years ago
David Majda 5c6f4dd38b PEG.js grammar: Append |Expression| to expression rule names
Makes the rule names a bit longer but also clearer.
11 years ago
David Majda 27c2d26203 PEG.js grammar: More JavaScript-like initializer/rule separation
Initializer and rules are now separated in a similar way as JavaScript
statements -- either by a semicolon or a line terminator, possibly with
whitespace and comments mixed in.

One consequence is that the grammars like this are now illegal:

  foo = "a" bar = "b"

A semicolon needs to be inserted between the rules:

  foo = "a";bar = "b"

I consider this a good change as the now-illegal syntax was somewhat
confusing.
11 years ago
David Majda 4ce7593f5f PEG.js grammar: Extract the |AnyMatcher| rule
This makes the |Primary| rule a bit more tidy. Also, matching the |.|
character really belongs to the lexical part of the grammar, next to
literals and character classes.
11 years ago
David Majda c0df01b092 PEG.js grammar: Improve code block handling
* Rename the |Action| rule to |CodeBlock| (it better describes what
    the rule matches).

  * Implement the rule in a simpler way and move it after more basic
    lexical elements.
11 years ago
David Majda 13f72bb19d PEG.js grammar: More JavaScript-like rules for identifiers
This change has two side effects:

  * Label names can no longer be JavaScript reserved words.

  * |$| is allowed again in label names. However, because of the
    preference rules, names starting with it will be usually parsed as a
    text operator followed by another identifier (denoting a rule
    reference or label name).
11 years ago
David Majda 0d6b91cb20 PEG.js grammar: More JavaScript-like rules for strings/literals/classes 11 years ago
David Majda bcb5271649 PEG.js grammar: More JavaScript-like rules for skipped elements 11 years ago
David Majda b463808b3f PEG.js grammar: Replace several smaller comments by a big initial one 11 years ago
David Majda a5a0609505 PEG.js grammar: Inline trivial character rules 11 years ago
David Majda ae89f5e469 PEG.js grammar: Change whitespace handling
Before this commit, whitespace was handled at the lexical level by
making tokens consume any whitespace coming after them. This was
accomplished by appending |__| to every token rule.

This commit changes whitespace handling to be more explicit. Tokens no
longer consume whitespace coming after them and syntactic rules have to
cope with it. While this slightly complicates the syntactic grammar, I
think it's a cleaner way. Moreover, it is what JavaScript example
grammar does.

One small side-effect of thich change is that the grammar is now
stand-alone (it doesn't require utils.js anymore).
11 years ago
David Majda 4725632641 PEG.js grammar: Capitalize rule names
When rule names are capitalized, it's easier to visually distinguish
them from non-capitalized label names. Moreover, I use capitalized rule
names in all my grammars these days.
11 years ago
David Majda fb72c430e6 PEG.js grammar: Fix line continuation handling
Before this commit, a line continuation (backslash followed by a line
terminator character) contributed a character to a string or a character
class it was used in. In JavaScript and many other languages, line
continuation doesn't contribute anything.

This commit aligns PEG.js line continuation behavior with JavaScript.
11 years ago
David Majda 3dbec0b30d PEG.js grammar: Fix how |rawText| is created
Before this commit, the value of the |rawText| property of "class" AST
nodes was created in a hackish way from processed input and it didn't
always exactly represent the actual input text.

This commit changes the code so that the value of the |rawText| property
is created using the |text| function. This is a clean way which also
resolves the exact representation problem.
11 years ago
David Majda df154daafb PEG.js grammar: Disallow empty sequences
Empty sequences are useless and they only confused users. Let's disallow
them.
11 years ago
David Majda 2005345976 Complete rewrite of the CSS example grammar
This is a complete rewrite of the CSS example grammar. It is now based
on CSS 2.1 *including the errata* and the generated parser builds a
nicer syntax tree. There is also a number of cleanups, formatting
changes, naming changes, and bug fixes.

Beside this, the rewrite reflects how I write grammars today (as opposed
to few years ago) and what style I would recommend to others.
11 years ago
David Majda 18f92c5647 Complete rewrite of the JavaScript example grammar
This is a complete rewrite of the JavaScript example grammar. It is now
based on ECMA-262, 5.1 Edition and the generated parser builds a syntax
tree compatible with Mozilla SpiderMonkey Parser API. There is also a
number of cleanups, formatting changes, naming changes, and bug fixes.

Beside this, the rewrite reflects how I write grammars today (as opposed
to few years ago) and what style I would recommend to others.
11 years ago
David Majda fba70833dd Complete rewrite of the JSON example grammar
This is a complete rewrite of the JSON example grammar. It is now based
on RFC 7159 instead of an informal description at the JSON website.

Beside this, the rewrite reflects how I write grammars today (as opposed
to few years ago) and what style I would recommend to others.
11 years ago
David Majda f5443d2bf1 Complete rewrite of the arithmetics example grammar
This is a complete rewrite of the arithmetics example grammar. It now
allows whitespace between tokens, supports "-" and "/" operators, and
gets the operator associativity right. Also, rule names now match the usual
conventions (term, factor,...).

Beside this, the rewrite reflects how I write grammars today (as opposed
to few years ago) and what style I would recommend to others.
11 years ago
David Majda 93d3c6a250 Update .travis.yml
Remove a directive to test in Node.js 0.6. Add a directive to test in
Node.js 0.10.

Should fix broken Travis CI builds:

  https://travis-ci.org/dmajda/pegjs/builds/15922026
11 years ago
David Majda 2263a30034 Update version to 0.8.0 11 years ago
David Majda 7d761e9aae Update CHANGELOG.md 11 years ago
David Majda d74f9df7dd Make CHANGELOG.md less dense
While the additional spacing makes lists with one-line items uglier, it
also makes lists with multi-line items much more readable.
11 years ago
David Majda 4fe0167a70 Convert CHANGELOG to Markdown
* Convert CHANGELOG to Markdown.
  * Improve formatting a bit.
  * Add links to GitHub issues
  * Fix typos.
11 years ago
David Majda a449f12efe Require Node.js >= 0.8.0 11 years ago
David Majda ff0beb5a8c benchmark/run: Always parse the -n/--run-count value as decimal integer 11 years ago
David Majda e73adafbf6 Add license to all vendored libraries where it was missing
Fixes #207.
11 years ago
David Majda e7e4543bb4 .jshintrc: Remove the "sub" option 11 years ago
David Majda e20e907d8c .jshintrc: Add the "trailing" option 11 years ago
David Majda 4402f7fd86 .jshintrc: Add the "noarg" option 11 years ago
David Majda af54963233 .jshintrc: Add the "latedef" option 11 years ago
David Majda 4362ba190c .jshintrc: Add the "immed" option 11 years ago
David Majda 43eeabf03a .jshintrc: Add the "freeze" option 11 years ago
David Majda 95fd64ec15 .jshintrc: Add the "forin" option & fix fallout
Also added few missing |hasOwnProperty| calls that JSHint didn't detect
because it only looks whether there is an |if| statement wrapping the
loop body.
11 years ago
David Majda f22d7aabb5 Fix JSHint errors in bin/pegjs
Fixes the following JSHint errors:

  bin/pegjs: line 66, col 14, 'extraOptions' used out of scope.
  bin/pegjs: line 70, col 19, 'extraOptions' used out of scope.
  bin/pegjs: line 71, col 20, 'extraOptions' used out of scope.
  bin/pegjs: line 80, col 10, Wrap the /regexp/ literal in parens to disambiguate the slash operator.
  bin/pegjs: line 128, col 43, Missing semicolon.
  bin/pegjs: line 128, col 45, Don't make functions within a loop.
  bin/pegjs: line 150, col 13, Redefinition of 'module'.
  bin/pegjs: line 217, col 34, Expected '===' and instead saw '=='.
  bin/pegjs: line 243, col 44, 'source' used out of scope.
  bin/pegjs: line 243, col 61, 'source' used out of scope.
11 years ago
David Majda cc3a9fde2d Fix JSHint error in benchmark/run
Fixes the following JSHint error:

  benchmark/run: line 106, col 10, Wrap the /regexp/ literal in parens to disambiguate the slash operator.
11 years ago
David Majda e321f0c23e Fix JSHint error in lib/compiler/passes/generate-bytecode.js
Fixes the following JSHint error:

  lib/compiler/passes/generate-bytecode.js: line 334, col 71, Expected an assignment or function call and instead saw an expression.
11 years ago
David Majda b3c6a997b0 Use JSHint 2.3.0 11 years ago
David Majda 06a83448df Remove various unused variables and function parameters 11 years ago