Pest.sublime-syntax

%YAML 1.2
---
# http://www.sublimetext.com/docs/3/syntax.html
name: Pest
file_extensions:
  - pest
scope: source.pest.pest
variables:
  ident: '\b\w+\b'
  trailing_op: '[*?+]'
  replaceable_support_idents: '\b(WHITESPACE|COMMENT)\b'
  support_idents: '\b(PUSH|POP|ANY|SOI|EOI|NEWLINE|ASCII_ALPHANUMERIC)\b|{{replaceable_support_idents}}'
  escaped_char: '\\("|\\|r|n|t|0|''|x\h{2}|u\{\h{2,6}\})'
contexts:
  main:
    - include: comments
    - include: rule_decl
    - match: \S
      scope: invalid.pest

  rule_decl:
    - match: '^\s*{{replaceable_support_idents}}'
      scope: support.function.override.pest
      set: [rule_def, must_be_equals]
    - match: '^\s*{{ident}}'
      scope: entity.name.function.pest
      set: [rule_def, must_be_equals]
    - match: \S
      scope: invalid.pest

  must_be_equals:
    - match: '='
      scope: keyword.operator.pest
      pop: true
    - match: \S
      scope: invalid.pest

  rule_def:
    - match: '([@_$]?)\{'
      captures:
        1: keyword.operator.pest
      set:
        - match: '\}'
          pop: true
        - include: rule_def_inner

  escaped-char:
    - match: '{{escaped_char}}'
      scope: constant.character.escape.pest
    - match: '\\.'
      scope: invalid.pest

  rule_def_inner: 
    - include: comments
    - match: '(\^?)(")'
      captures:
        1: keyword.operator.pest
        2: punctuation.definition.string.begin.pest
      push:
        - meta_scope: string.quoted.double.pest
        - include: escaped-char
        - match: '"'
          scope: punctuation.definition.string.end.pest
          set: trailing
    - match: ''''
      scope: punctuation.definition.string.begin.pest
      push:
        - meta_scope: string.quoted.single.pest
        - include: escaped-char
        - match: ''''
          scope: punctuation.definition.string.end.pest
          set:
            - match: '\.\.'
              scope: keyword.operator.range.pest
              push:
              - match: ''''
                scope: punctuation.definition.string.begin.pest
                set:
                  - meta_scope: string.quoted.single.pest
                  - include: escaped-char
                  - match: ''''
                    scope: punctuation.definition.string.end.pest
                    set: trailing
              - match: \S
                scope: invalid.pest
                pop: true
            - include: trailing
    - match: '{{support_idents}}'
      scope: meta.function-call support.function.pest
      push: trailing
    - match: '{{ident}}'
      scope: meta.function-call variable.function.pest
      push: trailing
    - match: '[~|~]'
      scope: keyword.operator.pest
    - match: '[!&]'
      scope: keyword.operator.pest
    - match: \(
      scope: punctuation.section.parens.begin.pest
      push:
      - match: \)
        scope: punctuation.section.parens.end.pest
        set: trailing
      - include: rule_def_inner
    - match: \S
      scope: invalid.pest

  rule_name:
    - match: '{{ident}}'

  comments:
    - match: (//).*$\n?
      scope: comment.line.double-dash.pest
      captures:
        1: punctuation.definition.comment.pest
    - include: block_comment

  block_comment:
    - match: '/\*'
      scope: punctuation.definition.comment.pest
      push:
        - meta_scope: comment.block.pest
        - include: block_comment
        - match: '\*/'
          scope: punctuation.definition.comment.pest
          pop: true

  trailing:
    - match: '{{trailing_op}}'
      scope: keyword.operator.pest
      set: 
      - match: '{{trailing_op}}'
        scope: invalid.pest
      - match: ''
        pop: true
    - match: '{'
      push: trailing_braces
    - match: ''
      pop: true

  trailing_braces:
    - match: '}'
      scope: invalid.pest
      pop: true
    - match: \d+
      scope: constant.numeric.integer.pest
      set:
      - match: '}'
        pop: true
      - match: ','
        set:
        - match: \d+
          scope: constant.numeric.integer.pest
          set:
          - match: '}'
            pop: true
          - match: \S
            scope: invalid.pest
        - match: \S
          scope: invalid.pest
      - match: \S
        scope: invalid.pest
    - match: \S
      scope: invalid.pest