planning

node_modules/micromark/lib/tokenize/factory-title.js

@@ -0,0 +1,92 @@
+'use strict'
+
+var assert = require('assert')
+var codes = require('../character/codes.js')
+var markdownLineEnding = require('../character/markdown-line-ending.js')
+var constants = require('../constant/constants.js')
+var types = require('../constant/types.js')
+var factorySpace = require('./factory-space.js')
+
+function _interopDefaultLegacy(e) {
+  return e && typeof e === 'object' && 'default' in e ? e : {default: e}
+}
+
+var assert__default = /*#__PURE__*/ _interopDefaultLegacy(assert)
+
+// eslint-disable-next-line max-params
+function titleFactory(effects, ok, nok, type, markerType, stringType) {
+  var marker
+
+  return start
+
+  function start(code) {
+    assert__default['default'](
+      code === codes.quotationMark ||
+        code === codes.apostrophe ||
+        code === codes.leftParenthesis,
+      'expected `"`, `\'`, or `(`'
+    )
+    effects.enter(type)
+    effects.enter(markerType)
+    effects.consume(code)
+    effects.exit(markerType)
+    marker = code === codes.leftParenthesis ? codes.rightParenthesis : code
+    return atFirstTitleBreak
+  }
+
+  function atFirstTitleBreak(code) {
+    if (code === marker) {
+      effects.enter(markerType)
+      effects.consume(code)
+      effects.exit(markerType)
+      effects.exit(type)
+      return ok
+    }
+
+    effects.enter(stringType)
+    return atTitleBreak(code)
+  }
+
+  function atTitleBreak(code) {
+    if (code === marker) {
+      effects.exit(stringType)
+      return atFirstTitleBreak(marker)
+    }
+
+    if (code === codes.eof) {
+      return nok(code)
+    }
+
+    // Note: blank lines can’t exist in content.
+    if (markdownLineEnding(code)) {
+      effects.enter(types.lineEnding)
+      effects.consume(code)
+      effects.exit(types.lineEnding)
+      return factorySpace(effects, atTitleBreak, types.linePrefix)
+    }
+
+    effects.enter(types.chunkString, {contentType: constants.contentTypeString})
+    return title(code)
+  }
+
+  function title(code) {
+    if (code === marker || code === codes.eof || markdownLineEnding(code)) {
+      effects.exit(types.chunkString)
+      return atTitleBreak(code)
+    }
+
+    effects.consume(code)
+    return code === codes.backslash ? titleEscape : title
+  }
+
+  function titleEscape(code) {
+    if (code === marker || code === codes.backslash) {
+      effects.consume(code)
+      return title
+    }
+
+    return title(code)
+  }
+}
+
+module.exports = titleFactory