7 Commits (b0a5db1ab964745add140632d72b8bd451612cf2)

Author SHA1 Message Date
Futago-za Ryuu b0a5db1ab9 Expose ast classes used by parser 6 years ago
Futago-za Ryuu 9d266625b4 Merge ast utils into Grammar class 6 years ago
Mingun 0dab14d652 Add ability to extract comments from the grammar (#511)
All comments stored in the `comments` property of the `grammar` node.
Comments extracted only if the `extractComments` options set to `true` when you generate parser.
This property is object with mapping start offset of comment to comment object, that looks like:

```js
{
  text: 'text in the comment, just after // or /* and before */',
  multiline: true|false,// true for /**/ comments, false for // comments
  location: location()
}
```
6 years ago
Futago-za Ryuu d06a5b52ef Restore silentFails guard for rule$expects 6 years ago
Futago-za Ryuu f5b323b401 Report consistent errors on look ahead + cached results
This should resolve issue #452, and is based entirely on a fix @nikku did on a local branch of PEG.js v0.10.0 (Currently at https://github.com/nikku/pegjs/tree/452-peg-js-0.10-fix).

Also his test case from #555 is included.

Fixes #452, Closes #555
6 years ago
Mingun 9b90fa1d81 Move all codegeneration from `generateBytecode` pass to `generateJs` pass (#459)
* Split 'consts' collection by content types into:

  - literals: for literal expressions, like `"a"`
  - classes: for character class expressions, like `[a]`
  - expectations: for constants describing expected values when parse failed
  - functions: for constants with function code

* Move any JavaScript code generation from 'generateBytecode' to 'generateJs'.
* Rename opcode 'MATCH_REGEXP' to 'MATCH_CLASS' (name reflects purpose, not implementation).
* Replace 'PUSH' opcode with 'PUSH_EMPTY_STRING' opcode because it is only used with empty strings
6 years ago
Futago-za Ryuu 93cc6c5b26 Parser calls AST node creator now
Before this commit, the PEG.js parser always created the AST using a plain JavaSctript object, but allthough simple and effective for the job, this method sacrificies performance slightly.

From now on the parser shall call a Node creator. This should help with performance, as well as in the future move some AST helpers into the new AST functions.
6 years ago