%YAML 1.2
---
# http://www.sublimetext.com/docs/3/syntax.html
name: QBasic
file_extensions:
  - bas
  - qb
scope: source.qbasic
contexts:
  main:
    - match: (').*
      comment: Comment
      scope: comment.line.qbasic
      captures:
        1: punctuation.definition.comment.qbasic
    - match: "[,:;]"
      comment: Delimiter
      scope: meta.delimiter.object.qbasic
    - match: \b((END )?IF|(END )?SELECT|(RESUME )?NEXT|CASE|CLOSE|DO|ELSE|FOR|GOSUB|GOTO|LOOP|ON|OPEN|RETURN|THEN|TO|UNTIL|WHILE)\b
      comment: Keyword
      scope: keyword.control.qbasic
    - match: (\+|=|<|>|<>|AND|OR)
      comment: Operator
      scope: keyword.operator.qbasic
    - match: \b(CHR\$|CLS|COLOR|DATA|INPUT|INT|KEY|LEN|LINE|LOCATE|PALETTE|PLAY|PRINT|PSET|PUT|REDIM|RND|SCREEN|TAB|VIEW)\b
      comment: Function
      scope: support.function.qbasic
    - match: \b(\d(\.\d)?)+
      comment: Numeric
      scope: constant.numeric.qbasic
    - match: \b\w+\$
      comment: Global
      scope: constant.global.qbasic
    - match: '^(\w+):'
      comment: SUB
      scope: meta.function.qbasic
      captures:
        1: entity.name.function.qbasic
    - match: '[\(\)]'
      comment: Brace, round
      scope: meta.brace.round.qbasic
    - match: '[\{\}]'
      comment: Brace, curly
      scope: meta.brace.curly.qbasic
    - match: (\w+\()
      comment: Array
      captures:
        1: constant.array.qbasic
      push:
        - meta_scope: other.array.qbasic
        - match: (\))
          captures:
            1: constant.array.qbasic
          pop: true
        - include: main
    - match: (")
      comment: String, double-quoted
      captures:
        1: punctuation.definition.string.begin.qbasic
      push:
        - meta_scope: string.quoted.double.qbasic
        - match: (")
          captures:
            1: punctuation.definition.string.begin.qbasic
          pop: true
        - match: (\\")
          comment: Escaped double-quote inside double-quoted string
          scope: constant.character.escape.qbasic
        - match: (')
          comment: Single quote inside double-quoted string
          scope: other.qbasic
        - include: main