# Syntax highlighting for the DASM macro assembler

scopeName: 'source.assembly.6502.dasm'
fileTypes: []
name: '6502 Assembly (DASM)'
patterns: [
  { include: 'source.6502-opcodes' }
  { include: '#comments' }
  { include: '#symbols' }
  { include: '#directives' }
]

# Repository starts here ------------------------------------------------------
repository:

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

  # symbols
  symbols:
    patterns: [
      # strings
      {
        begin: '"'
        beginCaptures:
          0:
            name: 'punctuation.definition.string.begin.dasm'
        end: '"'
        endCaptures:
          0:
            name: 'punctuation.definition.string.end.dasm'
        name: 'string.quoted.double.dasm'
      }
      # global labels
      {
        captures:
          1:
            name: 'entity.name.function.label.dasm'
        match: '\\b([A-Za-z0-9_]+):'
        name: 'meta.function.label.dasm'
      }
      # local labels
      {
        captures:
          1:
            name: 'entity.name.function.label.dasm'
        match: '\\.\\b([A-Za-z0-9_]+):'
        name: 'meta.function.label.dasm'
      }
      # absolut addressing/numbers
      {
        match: '\\#(\'.\'|[^\\s\']+)'
        name: 'constant.numeric.hex.dasm'
      }
      # hex, prefixed with dollar sign($)
      {
        match: '-?\\$\\b[a-fA-F0-9]+\\b'
        name: 'constant.numeric.hex.dasm'
      }
      # octal, prefixed with zero(0)
      {
        match: '-?\\b0[1-7]+\\b'
        name: 'constant.numeric.octal.dasm'
      }
      # binary
      {
        match: '%[01]+'
        name: 'constant.numeric.binary.65816-generic'
      }
      # decimal
      {
        match: '\\b([0-9]+)\\b'
        name: 'constant.numeric.decimal.65816-generic'
      }
    ]

    # directives
  directives:
    patterns: [
      # file and symbol control
      {
        match: '\\b(?i:seg(\\.u)?|include|incbin|incdir|hex|err|r?org|processor|echo|rend|align|subroutine)\\b'
        name: 'support.function.pseudo.dasm'
      }
      # data control
      {
        match: '\\b(?i:d[csv](.bwl)?|hex|eq[um]|set|list\\s(on|off))\\b'
        name: 'support.function.pseudo.dasm'
      }
      # data control II
      {
        match: '\\.\\b(?i:byte|word)\\b'
        name: 'support.function.pseudo.dasm'
      }
      # Macro control
      {
        match:  '\\b(?i:mac|endm|mexit)\\b'
        name:   'support.function.pseudo.acme'
      }
      # Conditional control
      {
        match:  '\\b(?i:ifn?const|if|else|e(nd)?if|repeat|repend)\\b'
        name:   'keyword.control.conditional.acme'
      }
    ]