%YAML 1.2
---
name: todo.txt
scope: text.todo
variables:
  date: '(\d{4}-\d{2}-\d{2}(?:\s+|$))'
  prio: '(\([A-Z]\)(?:\s+|$))'
contexts:
  main:
    - match: '^\s*x\s'
      push: done

    - match: ""
      push: todo

  done:
    - meta_scope: comment.line
    - include: check_prio

  todo:
    - meta_scope: text.todo
    - include: check_prio

  desc_fallback:
    - match: '\s'
    - match: ""
      push: desc_start

  check_prio:
    - match: "{{date}}"
      scope: constant.numeric
      push: check_date2

    - match: "{{prio}}"
      scope: keyword
      push: check_date

    - include: desc_fallback

  check_date:
    - match: "{{date}}"
      scope: constant.numeric
      set: check_date2
    - include: desc_fallback

  check_date2:
    - match: "{{date}}"
      scope: constant.numeric
      set: desc_start
    - include: desc_fallback

  # Any preceeding whitespace has been read
  # safe to assume start of match is succeeds whitespace
  desc_start:
    - match: '@\S+'
      scope: string
      push: desc
    - match: '\+\S+'
      scope: variable.function
      push: desc
    - match: '\b([^\s:]+):([^\s:]+)\b'
      captures:
        1: entity.name
        2: entity.name.tag
      push: desc
    - match: ""
      set: desc

  desc:
    - match: '(?:\s|^)@\S+'
      scope: string
    - match: '(?:\s|^)\+\S+'
      scope: variable.function
    - match: '\b([^\s:]+):([^\s:]+)\b'
      captures:
        1: entity.name
        2: entity.name.tag