notescraft/crates/syntax/grammars/Liquid.sublime-syntax

%YAML 1.2
---
# NotesCraft's own Liquid grammar. Original work written for this project; not copied
# from any other grammar. Regexes stay linear: no nested quantifiers, so nothing backtracks far.
# Strings end at their line unless the language allows multi-line ones.
name: Liquid
file_extensions: [liquid]
scope: text.html.liquid

contexts:
  main:
    - match: '\{%-?\s*comment\s*-?%\}'
      scope: keyword.operator.template.begin
      push: comment-tag
    - match: '\{%-?\s*raw\s*-?%\}'
      scope: keyword.operator.template.begin
      push: raw-tag
    - match: '\{#'
      scope: keyword.operator.template.begin comment.block
      push: comment
    - match: '\{\{-?'
      scope: keyword.operator.template.begin
      push: expr
    - match: '\{%-?'
      scope: keyword.operator.template.begin
      push: stmt
  comment:
    - meta_scope: comment.block
    - match: '#\}'
      scope: keyword.operator.template.end
      pop: true
  expr:
    - match: '-?\}\}'
      scope: keyword.operator.template.end
      pop: true
    - match: '"'
      scope: punctuation.definition.string.begin
      push: expr-dq
    - match: ''''
      scope: punctuation.definition.string.begin
      push: expr-sq
    - match: '(\|)\s*([A-Za-z_]\w*)'
      captures:
        1: keyword.operator
        2: support.function.filter
    - match: '\b(?:if|elsif|else|endif|unless|endunless|case|when|endcase|for|endfor|in|break|continue|assign|capture|endcapture|increment|decrement|include|render|section|layout|paginate|endpaginate|form|endform|tablerow|endtablerow|cycle|echo|liquid|style|endstyle|javascript|endjavascript|schema|endschema|limit|offset|reversed|with|as|for)\b'
      scope: keyword.control
    - match: '\b(?:and|or|contains)\b'
      scope: keyword.operator.word
    - match: '\b(?:true|false|nil|null|blank|empty)\b'
      scope: constant.language
    - match: '\b(?:0[xX][0-9a-fA-F_]+|0[bB][01_]+|\d[\d_]*(?:\.\d[\d_]*)?(?:[eE][+-]?\d+)?)\b'
      scope: constant.numeric
    - match: '[-+*/%=<>!&|^~?:.,]+'
      scope: keyword.operator
  expr-dq:
    - meta_scope: string.quoted.double
    - match: '\\.'
      scope: constant.character.escape
    - match: '"'
      scope: punctuation.definition.string.end
      pop: true
    - match: '(?=\n)'
      pop: true
  expr-sq:
    - meta_scope: string.quoted.single
    - match: '\\.'
      scope: constant.character.escape
    - match: ''''
      scope: punctuation.definition.string.end
      pop: true
    - match: '(?=\n)'
      pop: true
  stmt:
    - match: '-?%\}'
      scope: keyword.operator.template.end
      pop: true
    - match: '"'
      scope: punctuation.definition.string.begin
      push: stmt-dq
    - match: ''''
      scope: punctuation.definition.string.begin
      push: stmt-sq
    - match: '(\|)\s*([A-Za-z_]\w*)'
      captures:
        1: keyword.operator
        2: support.function.filter
    - match: '\b(?:if|elsif|else|endif|unless|endunless|case|when|endcase|for|endfor|in|break|continue|assign|capture|endcapture|increment|decrement|include|render|section|layout|paginate|endpaginate|form|endform|tablerow|endtablerow|cycle|echo|liquid|style|endstyle|javascript|endjavascript|schema|endschema|limit|offset|reversed|with|as|for)\b'
      scope: keyword.control
    - match: '\b(?:and|or|contains)\b'
      scope: keyword.operator.word
    - match: '\b(?:true|false|nil|null|blank|empty)\b'
      scope: constant.language
    - match: '\b(?:0[xX][0-9a-fA-F_]+|0[bB][01_]+|\d[\d_]*(?:\.\d[\d_]*)?(?:[eE][+-]?\d+)?)\b'
      scope: constant.numeric
    - match: '[-+*/%=<>!&|^~?:.,]+'
      scope: keyword.operator
  stmt-dq:
    - meta_scope: string.quoted.double
    - match: '\\.'
      scope: constant.character.escape
    - match: '"'
      scope: punctuation.definition.string.end
      pop: true
    - match: '(?=\n)'
      pop: true
  stmt-sq:
    - meta_scope: string.quoted.single
    - match: '\\.'
      scope: constant.character.escape
    - match: ''''
      scope: punctuation.definition.string.end
      pop: true
    - match: '(?=\n)'
      pop: true
  comment-tag:
    - meta_scope: comment.block
    - match: '\{%-?\s*endcomment\s*-?%\}'
      scope: keyword.operator.template.end
      pop: true
  raw-tag:
    - meta_scope: string.unquoted.raw
    - match: '\{%-?\s*endraw\s*-?%\}'
      scope: keyword.operator.template.end
      pop: true