# =====================================
# Meta

name: SEHN
uuid: 06947fd2-ab1f-4518-8f45-cc76b0294e5f
scopeName: source.sehn
fileTypes:
  - sehn

# =====================================
# Folding

# Matches the start of a dict, list or textlist as
# long as the end does not follow on the same line, ignoring
# whitespace and one optional comma OR if the start character
# is at the end of the line.
foldingStartMarker: '^\s*[{\[\`](?!.*[}\]\`],?\s*$)|[{\[\`]\s*$'

# Matches the end of a dict, list or textlist as
# long as it is not preceeded by anything other
# than whitespace.
foldingStopMarker: '^\s*[}\]\`]'

# =====================================
# Root patterns

patterns:
  -	include: '#value'

# =====================================
# Common patterns

repository:
  value:
    patterns:
      - include: '#bool'
      - include: '#real'
      - include: '#text'
      - include: '#text-list'
      - include: '#list'
      - include: '#dict'
      - include: '#tag'
      - include: '#kind'
      - include: '#comment'
      - include: '#illegal'

  # =====================================

  bool:
    name: constant.language.boolean.sehn
    match: '\b(?:true|false)\b'

  # =====================================

  real:
    name: constant.numeric.sehn
    match: '\-?(?:(?:([0-9]+)(\.)([0-9]+))|(?:([1-9][0-9]*)(e)(-?)([1-9][0-9]+))|(?:([1-9][0-9]+)))'

  # =====================================

  text:
    name: string.quoted.double.sehn
    begin: '"'
    end: '"'
    beginCaptures:
      0:
        name: punctuation.definition.string.begin.sehn
    endCaptures:
      0:
        name: punctuation.definition.string.end.sehn
    patterns:
      - include: '#text-content'
  text-content:
    patterns:
      - name: constant.character.escape.sehn
        match: '\\(?:["\\/bfnrt]|u[0-9a-fA-F]{4})'
      - name: invalid.illegal.unrecognized-string-escape.sehn
        match: '\\.'
  text-list:
    name: meta.structure.stringlist
    begin: '\`'
    end: '\`'
    beginCaptures:
      0:
        name: punctuation.definition.stringlist.begin.sehn
    endCaptures:
      0:
        name: punctuation.definition.stringlist.end.sehn
    patterns:
      - include: '#text'
      - include: '#comment'
      - include: '#illegal'

  # =====================================

  dict:
    name: meta.structure.dictionary.sehn
    begin: '\{'
    end: '\}'
    beginCaptures:
      0:
        name: punctuation.definition.dictionary.begin.sehn
    endCaptures:
      0:
        name: punctuation.definition.dictionary.end.sehn
    patterns:
      -	include: '#dict-key'
      - include: '#comment'
      - include: '#dict-val'
      - name: invalid.illegal.expected-dictionary-separator.sehn
        match: '[^\s\}]'
  dict-key:
    name: string.sehn support.type.property-name.sehn
    begin: '"'
    end: '"'
    beginCaptures:
      0:
        name: punctuation.support.type.property-name.begin.sehn
    endCaptures:
      0:
        name: punctuation.support.type.property-name.end.sehn
    patterns:
      - include: '#text-content'
  dict-val:
    name: meta.structure.dictionary.value.sehn
    begin: ':'
    end: '(,)|(?=\})'
    beginCaptures:
      0:
        name: punctuation.separator.dictionary.key-value.sehn
    endCaptures:
      1:
        name: punctuation.separator.dictionary.pair.sehn
    patterns:
      - include: '#value'
      - name": invalid.illegal.expected-dictionary-separator.sehn
        match": '[^\\s,]'

  # =====================================

  list:
    name: meta.structure.list.sehn
    begin: '\['
    end: '\]'
    beginCaptures:
      0:
        name: punctuation.definition.list.begin.sehn
    endCaptures:
      0:
        name: punctuation.definition.list.end.sehn
    patterns:
      - name: punctuation.separator.list.sehn
        match: ','
      - include: '#value'
      - name: invalid.illegal.expected-list-separator.sehn
        match: '[^\s\]]'

  # =====================================

  tag:
    name: meta.structure.tag
    begin: '(?:(\b(?:[a-z](?:[a-zA-Z0-9]*\/?[a-zA-Z0-9]+)+)\b)|(\b(?:[A-Z](?:[a-zA-Z0-9]*\/?[a-zA-Z0-9]+)+)\b))(\()'
    end: '(\))'
    beginCaptures:
      1:
        name: storage.type.tag.standard.sehn
      2:
        name: storage.type.tag.application.sehn
      3:
        name: punctuation.definition.tag.begin.sehn
    endCaptures:
      0:
        name: punctuation.definition.tag.end.sehn
    patterns:
      - include: '#value'

  # =====================================

  kind:
    patterns:
      - name: storage.type.base.sehn
        match: '\b(?:none|bool|real|text|dict|list|kind)\b'
      - name: storage.type.extension.standard.sehn
        match: '\b(?:[a-z](?:[a-zA-Z0-9]*\/?[a-zA-Z0-9]+)+)\b'
      - name: storage.type.extension.application.sehn
        match: '\b(?:[A-Z](?:[a-zA-Z0-9]*\/?[a-zA-Z0-9]+)+)\b'

  # =====================================

  comment:
    name: comment.line.sehn
    match: '#.*'
  illegal:
    name: invalid.illegal.sehn
    match: '[^\s]'