scopeName: 'source.assembly.65816.merlin'
fileTypes: []
name: 'Merlin'
patterns: [
  { include: 'source.65c02-opcodes' }
  { include: 'source.65816-opcodes' }
  { include: 'source.65816l-opcodes' }
  { include: 'source.65816alt-opcodes' }
  { include: '#comments' }
  { include: '#symbols' }
  { include: '#directives' }
  # registers
  # TODO: fix registers
  # {
  #   'match': '(?<=,)([xXyYsS])\\b'
  #   'name': 'variable.language.register'
  # }
]


repository:

  # comments
  comments:
    patterns: [
      # asterisk line comment
      {
        match: '^[*].*'
        name: 'comment.line.asterisk.merlin'
      }
      # semicolon line comment
      {
        match: ';.*$'
        name: 'comment.line.semicolon.merlin'
      }
    ]

  # symbols
  symbols:
    patterns: [
    # delimited strings
      {
        begin: '[\'"]'
        beginCaptures:
          0: name: 'punctuation.definition.string.begin.merlin'
        end: '[\'"]'
        endCaptures:
          0: name: 'punctuation.definition.string.end.merlin'
        name: 'string.quoted.double.assembly.merlin'
      }
    # TODO: highlight strings with all valid delimiters
      # {
      #   captures:
      #     1: name: 'string.delimited.begin.merlin'
      #     2: name: 'string.delimited.merlin'
      #     3: name: 'string.delimited.end.merlin'
      #   match: '\\b(\\S)(.*?)(\\1)\\b'
      # }
      # TODO: fix label scopes
      # Variables
      {
        match:  '^][:-~][0-~]+'
        # name:   'variable.named.merlin'
        name:   'entity.name.function.label.merlin'
      }
      # Local labels
      {
        match:  '^:[:-~][0-~]+'
        name:   'entity.name.function.label.merlin'
      }
      # Global labels
      {
        match:  '^[:-~][0-~]+'
        name:   'entity.name.function.merlin'
      }
      # absolut address/number
      {
        match: '\\#(\'.\'|[^\\s\']+)'
        name: 'constant.numeric.hex.merlin'
      }
      # hex, prefixed with ampersand($)
      {
        match: '-?\\$[A-Fa-f0-9]+'
        name: 'constant.numeric.hex.merlin'
      }
      # octal, prefixed with @
      {
        match: '@([0-7]+)\\b'
        name: 'constant.numeric.octal.merlin'
      }
      # binary
      {
        match: '%[01]+'
        name: 'constant.numeric.binary.merlin'
      }
      # decimal
      {
        match: '\\b([0-9]+)\\b'
        name: 'constant.numeric.decimal.merlin'
      }
    ]

  # assembler directives
  directives:
    patterns: [
      # file control
      {
        match: '\\b(?i:equ|ext|ent|org|rel|obj|var|typ|end|dum|dend|ast|dat|lstdo|pag|ttl|skp|chk|err|kbd|lup|--\\^|mx|pau|sw|usr|xc)\\b'
        name: 'keyword.directive.merlin'
      }
      # data control
      {
        match: '\\b(?i:da|dw|ddb|db|dfb|adr|adrl|ds)\\b'
        name: 'support.function.pseudo.merlin'
      }
      # conditional control
      {
        match: '\\b(?i:do|else|if|fin)\\b'
        name: 'keyword.control.conditional.merlin'
      }
      # macro control
      {
        match: '\\b(?i:mac)\\b|<<<'
        name: 'support.function.pseudo.merlin'
        # name: 'keyword.directive.macro.merlin'
      }
      # operators
      {
        match: '[-+/*^><|#\\[\\](),=.!&]'
        name: 'keyword.operator.merlin'
      }
      # disk commands
      {
        captures:
          1: name: 'support.function.pseudo.merlin'
          2: name: 'string.quoted.other.path.merlin'
        match: '\\b((?i:dsk|put|use|sav))\\s+(\\S*)'
        name: 'meta.disk.directive.merlin'
      }
      # cycle count
      {
        captures:
          1: name: 'support.function.pseudo.merlin'
          2: name: 'constant.language.merlin'
        match: '\\b((?i:cyc))\\s+((?i:on|off|ave))\\b'
        name: 'meta.cyc.directive.merlin'
      }
      # expand control
      {
        captures:
          1: name: 'support.function.pseudo.merlin'
          2: name: 'constant.language.merlin'
        match: '\\b((?i:exp))\\s+((?i:on|off|only))\\b'
        name: 'meta.exp.directive.merlin'
      }
      # list control
      {
        captures:
          1: name: 'support.function.pseudo.merlin'
          2: name: 'constant.language.merlin'
        match: '\\b((?i:lst))\\s+((?i:off))\\b'
        name: 'meta.exp.directive.merlin'
      }
      # truncation control
      {
        captures:
          1: name: 'support.function.pseudo.merlin'
          2: name: 'constant.language.merlin'
        match: '\\b((?i:tr))\\s+((?i:on|off|adr))\\b'
        name: 'meta.tr.directive.merlin'
      }
      # string command
      {
        captures:
          1: name: 'support.function.pseudo.merlin'
          2: name: 'string.delimited.begin.merlin'
          3: name: 'string.delimited.merlin'
          4: name: 'string.delimited.end.merlin'
          5: name: 'constant.numeric.hex.merlin'
        match: '\\b((?i:asc|dci|inv|fls|str))\\s+(\\S)(.*?)(\\2|\\S),([a-fA-F0-9]+)?'
      }
      # reverse command
      {
        captures:
          1: name: 'support.function.pseudo.merlin'
          2: name: 'string.delimited.begin.merlin'
          3: name: 'string.delimited.merlin'
          4: name: 'string.delimited.end.merlin'
        match: '\\b((?i:rev))\\s+(\\S)(.*?)(\\2|$)'
      }
      # hex command
      {
        begin: '\\b((?i:hex))\\b'
        captures:
          1:
            name: 'support.function.pseudo.merlin'
        end: '$'
        name: 'meta.hex.directive.merlin'
        patterns: [
          # hex without $
          {
            match: '\\b[a-fA-F0-9]{1,2}\\b'
            name: 'constant.numeric.hex.merlin'
          }
          # semicolon comments
          {
            match: ';.*'
            name: 'comment.line.semicolon.merlin'
          }
          # number check
          {
            match: '(?!,)\\S'
            name: 'invalid.illegal.merlin'
          }
        ]
      }
    ]