%YAML 1.2
---
name: Regular Expressions (Javascript)
scope: source.regexp.js
hidden: true
contexts:
  main:
    - include: anchor
    - include: backref
    - include: quantifier
    - include: operator
    - include: group-assertion
    - include: group-definition
    - include: character-class
    - include: character-class-definition
  anchor:
    - match: '\\[bB]|\^|\$'
      scope: keyword.control.anchor.regexp
  backref:
    - match: '\\[1-9][0-9]*'
      scope: keyword.other.back-reference.regexp
  character-class:
    - match: '\\[wWsSdD]|\.'
      scope: constant.other.character-class.escape.backslash.regexp
    - match: '\\([trnvf0\\]|c[A-Z]|x[\da-fA-F]{2}|u[\da-fA-F]{4}|.)'
      scope: constant.character.escape.backslash.regexp
  character-class-definition:
    - match: '(\[)(\^)?'
      captures:
        1: punctuation.definition.character-class.regexp
        2: keyword.operator.negation.regexp
      push:
        - meta_scope: constant.other.character-class.set.regexp
        - match: '(\])'
          captures:
            1: punctuation.definition.character-class.regexp
          pop: true
        - include: character-class
        - match: |-
            (?x)
            (
              (\\[wWsSdD]|\.)|
              (\\([trnvf0]|c[A-Z]|x[\da-fA-F]{2}|u[\da-fA-F]{4}|.))
            )\-
            (
              (\\[wWsSdD]|\.)|
              (\\([trnvf0]|c[A-Z]|x[\da-fA-F]{2}|u[\da-fA-F]{4}|.))
            )
          scope: constant.other.character-class.range.regexp
          captures:
            2: constant.other.character-class.escape.backslash.regexp
            3: constant.character.escape.backslash.regexp
            5: constant.other.character-class.escape.backslash.regexp
            6: constant.character.escape.backslash.regexp
  group-assertion:
    - match: (\()((\?=)|(\?!))
      captures:
        1: punctuation.definition.group.regexp
        2: punctuation.definition.group.assertion.regexp
        3: meta.assertion.look-ahead.regexp
        4: meta.assertion.negative-look-ahead.regexp
      push:
        - meta_scope: meta.group.assertion.regexp
        - match: (\))
          captures:
            1: punctuation.definition.group.regexp
          pop: true
        - include: main
  group-definition:
    - match: (\()((\?:))?
      captures:
        1: punctuation.definition.group.regexp
        3: punctuation.definition.group.no-capture.regexp
      push:
        - meta_scope: meta.group.regexp
        - match: (\))
          captures:
            1: punctuation.definition.group.regexp
          pop: true
        - include: main
  operator:
    - match: \|
      scope: keyword.operator.or.regexp
  quantifier:
    - match: '(\?|\*\??|\+\??)|\{(\d+,\d+|\d+,|\d+)\}'
      scope: keyword.operator.quantifier.regexp