emerald.YAML-tmLanguage

# [PackageDev] target_format: plist, ext: tmLanguage
name: Emerald
scopeName: source.emerald
fileTypes:
- em

patterns:
- include: '#line-comment'
- include: '#declarations'
- include: '#keywords'
- include: '#literals'

repository:
  declarations:
    patterns:
    - begin: '\b(def)\b\s*([_a-zA-Z][_a-zA-Z0-9]*)\s*(:)?'
      beginCaptures:
        '1': {name: keyword.other.declaration.emerald}
        '2': {name: entity.name.function.emerald}
        '3': {name: punctuation.separator.colon.emerald}
      patterns:
        - match: ([_a-zA-Z][_a-zA-Z0-9]*)
          name: variable.parameter.emerald
        - match: ','
          name: punctuation.separator.comma.emerald
      end: \n
    - match: '\b(object)\b\s*([_a-zA-Z][_a-zA-Z0-9]*)\s*(?:(clones) ([_a-zA-Z][_a-zA-Z0-9]*))?'
      captures:
        '1': {name: keyword.other.declaration.emerald}
        '2': {name: entity.name.object.emerald}
        '3': {name: keyword.other.emerald}
        '4': {name: entity.name.object-parent.emerald}

  keywords:
    patterns:
    - name: keyword.other.declaration.emerald
      match: \b(let)\b
    - name: keyword.control.emerald
      match: \b(import|if|then|else|do|end)\b
    - name: keyword.control.loop.emerald
      match: \b(for|to|downto|by|while)\b
    - name: keyword.other.emerald
      match: \b(clone|clones|super|print|return)\b
    - name: keyword.operator.logical.emerald
      match: (!|&&|\|\|)
    - name: keyword.operator.comparison.emerald
      match: (==|!=|<|>|<=|>=)
    - name: keyword.operator.arithmetic.emerald
      match: (\||^|&|<<|>>|+|\-|\*|\/|%)
    - name: keyword.operator.assignment.emerald
      match: (=|+=|-=|*=|/=|%=)

  line-comment:
    name: comment.line.emerald
    begin: '#'
    end: \n

  literals:
    patterns:
    - name: constant.language.emerald
      match: \b(None|True|False)\b
    - name: constant.numeric.emerald
      match: \b(-?[0-9]+(?:\.[0-9]+)?)\b
    - name: string.quoted.single.emerald
      begin: ''''
      end: ''''
    - name: string.quoted.double.emerald
      begin: '"'
      end: '"'
    - name: variable.other.emerald
      match: \b([_a-zA-Z][_a-zA-Z0-9]*)\b