%YAML 1.2
---
# http://www.sublimetext.com/docs/3/syntax.html
name: EhBASIC
file_extensions: []
scope: source.ehbasic
variables:
  ident: '[A-Za-z][A-Za-z0-9]*'
contexts:
  main:
    - match: ^\d+
      scope: entity.name.function

    - match: '%[01]+\b'
      scope: constant.numeric.binary
    - match: '\$[0-9A-Fa-f]+\b'
      scope: constant.numeric.hexadecimal
    - match: '(\d+\.\d*|\.\d+|\d+)([eE][+-]?\d+)?'
      scope: constant.numeric
    - match: '"'
      scope: punctuation.definition.string.begin
      push:
        - meta_scope: string.quoted.double
        - match: '"'
          scope: punctuation.definition.string.end
          pop: true

    - match: '\b(DEF\s+FN)\s*({{ident}})\b'
      scope: meta.def.fn
      captures:
        0: keyword.function
        1: entity.name.function

    - match: '\bREM\b'
      push:
        - meta_scope: comment.line
        - match: '\n'
          pop: true

    - match: '\b(ON)\s+(IRQ|NMI)\b'
      captures:
        0: keyword.command
        1: keyword.command


    - match: '\b(BITCLR|BITSET|CALL|DEC|DEF|DOKE|FN|INC|POKE|SWAP)\b'
      scope: keyword.command

    - match: '\b(CLEAR|DIM|LET)\b'
      scope: keyword.variable

    - match: '\b(GET|INPUT|PRINT|READ|RESTORE|DATA|RESTORE|SPC|TAB|WIDTH|NULL)\b'
      scope: keyword.command.io

    - match: '\b(DO\ELSE|FOR|GOSUB|GOTO|IF|THEN|LOOP|UNTIL|WHILE|NEXT|ON|RETIRQ|RETNMI|RETURN|STEP|STOP|END|WAIT)\b'
      scope: keyword.control

    - match: '\b(AND|EOR|OR|NOT)\b'
      scope: keyword.operator

    - match: '\b(ABS|ASC|ATN|BITTST|COS|DEEK|EXP|FRE|INT|LEN|LOG|MAX|MIN|PEEK|POS|RND|SADD|SGN|SIN|SQR|TAN|USR|VAL|VARPTR)\b'
      scope: support.function


    - match: '\b(BIN|HEX|LCASE|LEFT|MID|RIGHT|STR|UCASE|CHR)\$'
      scope: support.function

    - match: '\b(PI|TWOPI)\b'
      scope: constant.support


    - match: '\b(CONT|LIST|NEW|RUN|LOAD|SAVE)\b'
      scope: keyword.command.immediate

    - match: '\b(IRQ|NMI)\b'
      scope: keyword.command
      push:
        - match: '\b(ON|OFF|CLEAR)\b'
          scope: constant.language
          pop: true
        - match: '$'
          pop: true
        - match: '\S+'
          scope: invalid.illegal
          pop: true


    - match: '\b{{ident}}\$'
      scope: variable.string
    - match: '\b{{ident}}\b'
      scope: variable