%YAML 1.2
---
# NotesCraft's own EJS grammar. Original work written for this project; not copied
# from any other grammar. Regexes stay linear: no nested quantifiers, so nothing backtracks far.
# Strings end at their line unless the language allows multi-line ones.
name: EJS
file_extensions: [ejs]
scope: text.html.ejs

contexts:
  main:
    - match: '<%#'
      scope: keyword.operator.template.begin comment.block
      push: ejs-comment
    - match: '<%%'
      scope: constant.character.escape
    - match: '<%[-=_]?'
      scope: keyword.operator.template.begin
      push: expr
  ejs-comment:
    - meta_scope: comment.block
    - match: '[-_]?%>'
      pop: true
  expr:
    - match: '[-_]?%>'
      scope: keyword.operator.template.end
      pop: true
    - match: '"'
      scope: punctuation.definition.string.begin
      push: expr-dq
    - match: ''''
      scope: punctuation.definition.string.begin
      push: expr-sq
    - match: '`'
      scope: punctuation.definition.string.begin
      push: expr-bt
    - match: '\b(?:var|let|const|if|else|for|while|do|switch|case|default|break|continue|return|function|new|typeof|instanceof|in|of|try|catch|finally|throw|await|async|include|forEach|this)\b'
      scope: keyword.control
    - match: '\b(?:true|false|null|undefined)\b'
      scope: constant.language
    - match: '\b(?:0[xX][0-9a-fA-F_]+|0[bB][01_]+|\d[\d_]*(?:\.\d[\d_]*)?(?:[eE][+-]?\d+)?)\b'
      scope: constant.numeric
    - match: '[-+*/%=<>!&|^~?:.,]+'
      scope: keyword.operator
  expr-dq:
    - meta_scope: string.quoted.double
    - match: '\\.'
      scope: constant.character.escape
    - match: '"'
      scope: punctuation.definition.string.end
      pop: true
    - match: '(?=\n)'
      pop: true
  expr-sq:
    - meta_scope: string.quoted.single
    - match: '\\.'
      scope: constant.character.escape
    - match: ''''
      scope: punctuation.definition.string.end
      pop: true
    - match: '(?=\n)'
      pop: true
  expr-bt:
    - meta_scope: string.quoted.backtick
    - match: '\\.'
      scope: constant.character.escape
    - match: '`'
      scope: punctuation.definition.string.end
      pop: true
    - match: '(?=\n)'
      pop: true