%YAML 1.2
---
name: Linker Script
file_extensions: [ld]
scope: source.linker

variables:
  num_suffix: '[KM]'

contexts:
  main:
    - include: comments
    - include: oct_literals
    - include: int_literals
    - include: hex_literals
    - include: control_keywords
    - include: symbol_names   # must be included before location_counter
    - include: location_counter

  comments:
    - match: /\*
      scope: punctuation.definition.comment.linker
      push:
        - meta_scope: comment.block.linker
        - match: \*/
          scope: punctuation.definition.comment.linker
          pop: true

  oct_literals:
    - match: \b0[0-7]*{{num_suffix}}?\b
      scope: constant.numeric.octal.linker

  int_literals:
    - match: \b[1-9][0-9]*{{num_suffix}}?\b
      scope: constant.numeric.integer.linker

  hex_literals:
    - match: \b0[Xx][0-9A-Fa-f]+{{num_suffix}}?\b
      scope: constant.numeric.hex.linker

  control_keywords:
    - match: '(?x)
              \b(?:ABSOLUTE
                  |ADDR
                  |ALIGN
                  |AT
                  |BLOCK
                  |BYTE
                  |CREATE_OBJECT_SYMBOLS
                  |DEFINED
                  |ENTRY
                  |FILL
                  |LONG
                  |MEMORY
                  |NEXT
                  |OUTPUT_FORMAT
                  |QUAD
                  |SECTIONS
                  |SHORT
                  |SIZEOF
                  |SIZEOF_HEADERS)\b'
      scope: keyword.control.linker

  symbol_names:
    - match: '(?x)
              (?:
                \b[A-Za-z_][A-Za-z_\.0-9\-]*
              |
                \B\.[A-Za-z_\.0-9\-]+
              )'
      scope: variable.other.linker
    - match: '"'
      push:
        - meta_scope: variable.other.linker
        - match: '"'
          pop: true
        - match: \n
          scope: invalid.illegal.linker
          pop: true

  location_counter:
    - match: \B\.\B
      scope: variable.language.linker