%YAML 1.2
---
# http://www.sublimetext.com/docs/3/syntax.html
name: BibTeX
comment: |
  Grammar based on description from http://artis.imag.fr/~Xavier.Decoret/resources/xdkbibtex/bibtex_summary.html#comment

      TODO: Does not support @preamble
file_extensions:
  - bib
scope: text.bibtex
contexts:
  main:
    - match: "@Comment"
      captures:
        0: punctuation.definition.comment.bibtex
      push:
        - meta_scope: comment.line.at-sign.bibtex
        - match: $\n?
          pop: true
    - match: '((@)String)\s*(\{)\s*([a-zA-Z]*)'
      captures:
        1: keyword.other.string-constant.bibtex
        2: punctuation.definition.keyword.bibtex
        3: punctuation.section.string-constant.begin.bibtex
        4: variable.other.bibtex
      push:
        - meta_scope: meta.string-constant.braces.bibtex
        - match: '\}'
          captures:
            0: punctuation.section.string-constant.end.bibtex
          pop: true
        - include: string_content
    - match: '((@)String)\s*(\()\s*([a-zA-Z]*)'
      captures:
        1: keyword.other.string-constant.bibtex
        2: punctuation.definition.keyword.bibtex
        3: punctuation.section.string-constant.begin.bibtex
        4: variable.other.bibtex
      push:
        - meta_scope: meta.string-constant.parenthesis.bibtex
        - match: \)
          captures:
            0: punctuation.section.string-constant.end.bibtex
          pop: true
        - include: string_content
    - match: '((@)[a-zA-Z]+)\s*(\{)\s*([^\s,]*)'
      captures:
        1: keyword.other.entry-type.bibtex
        2: punctuation.definition.keyword.bibtex
        3: punctuation.section.entry.begin.bibtex
        4: entity.name.type.entry-key.bibtex
      push:
        - meta_scope: meta.entry.braces.bibtex
        - match: '\}'
          captures:
            0: punctuation.section.entry.end.bibtex
          pop: true
        - match: '([a-zA-Z]+)\s*(\=)'
          captures:
            1: string.unquoted.key.bibtex
            2: punctuation.separator.key-value.bibtex
          push:
            - meta_scope: meta.key-assignment.bibtex
            - match: "(?=[,}])"
              pop: true
            - include: string_content
            - include: integer
    - match: '((@)[a-zA-Z]+)\s*(\()\s*([^\s,]*)'
      captures:
        1: keyword.other.entry-type.bibtex
        2: punctuation.definition.keyword.bibtex
        3: punctuation.section.entry.begin.bibtex
        4: entity.name.type.entry-key.bibtex
      push:
        - meta_scope: meta.entry.parenthesis.bibtex
        - match: \)
          captures:
            0: punctuation.section.entry.end.bibtex
          pop: true
        - match: '([a-zA-Z]+)\s*(\=)'
          captures:
            1: string.unquoted.key.bibtex
            2: punctuation.separator.key-value.bibtex
          push:
            - meta_scope: meta.key-assignment.bibtex
            - match: "(?=[,)])"
              pop: true
            - include: string_content
            - include: integer
    - match: '[^@\n]'
      push:
        - meta_scope: comment.block.bibtex
        - match: (?=@)
          pop: true
  integer:
    - match: \d+
      scope: constant.numeric.bibtex
  nested_braces:
    - match: '\{'
      captures:
        0: punctuation.definition.group.begin.bibtex
      push:
        - match: '\}'
          captures:
            0: punctuation.definition.group.end.bibtex
          pop: true
        - include: nested_braces
  string_content:
    - match: '"'
      captures:
        0: punctuation.definition.string.begin.bibtex
      push:
        - meta_scope: string.quoted.double.bibtex
        - match: '"'
          captures:
            0: punctuation.definition.string.end.bibtex
          pop: true
        - include: nested_braces
    - match: '\{'
      captures:
        0: punctuation.definition.string.begin.bibtex
      push:
        - meta_scope: string.quoted.other.braces.bibtex
        - match: '\}'
          captures:
            0: punctuation.definition.string.end.bibtex
          pop: true
        - match: "@"
          scope: invalid.illegal.at-sign.bibtex
        - include: nested_braces