%YAML 1.2
---
name: Liquid
file_extensions:
  - liquid
scope: text.html.liquid
contexts:
  main:
    - match: '\{\{-?'
      scope: punctuation.section.embedded.begin.liquid
      push: liquid-output
    - match: '\{%-?\s*comment\b[^%]*-?%\}'
      scope: comment.block.liquid
      push: liquid-comment
    - match: '\{%-?'
      scope: punctuation.section.embedded.begin.liquid
      push: liquid-tag
    - include: scope:text.html.basic

  liquid-output:
    - meta_scope: meta.embedded.liquid
    - match: '-?\}\}'
      scope: punctuation.section.embedded.end.liquid
      pop: true
    - include: liquid-values

  liquid-tag:
    - meta_scope: meta.embedded.liquid
    - match: '-?%\}'
      scope: punctuation.section.embedded.end.liquid
      pop: true
    - match: '\b(assign|capture|case|comment|cycle|decrement|echo|elsif|else|endcase|endcapture|endif|endfor|endunless|endcomment|for|if|include|increment|liquid|paginate|raw|render|tablerow|unless|when)\b'
      scope: keyword.control.liquid
    - match: '[><=!]=?|\.|:'
      scope: keyword.operator.liquid
    - include: liquid-values

  liquid-values:
    - match: '\|\s*[a-zA-Z_][\w-]*'
      scope: support.function.filter.liquid
    - match: '\b(true|false|nil|blank|empty|contains)\b'
      scope: constant.language.liquid
    - match: '\b\d+(\.\d+)?\b'
      scope: constant.numeric.liquid
    - match: '"([^"\\]|\\.)*"'
      scope: string.quoted.double.liquid
    - match: "'([^'\\\\]|\\\\.)*'"
      scope: string.quoted.single.liquid
    - match: '[a-zA-Z_][\w.-]*'
      scope: variable.other.liquid
    - match: '[,()\[\]]'
      scope: punctuation.separator.liquid

  liquid-comment:
    - meta_scope: comment.block.liquid
    - match: '\{%-?\s*endcomment\s*-?%\}'
      scope: comment.block.liquid
      pop: true