planning

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

@@ -0,0 +1,84 @@
+export default titleFactory
+
+import assert from 'assert'
+import codes from '../character/codes.mjs'
+import markdownLineEnding from '../character/markdown-line-ending.mjs'
+import constants from '../constant/constants.mjs'
+import types from '../constant/types.mjs'
+import spaceFactory from './factory-space.mjs'
+
+// eslint-disable-next-line max-params
+function titleFactory(effects, ok, nok, type, markerType, stringType) {
+  var marker
+
+  return start
+
+  function start(code) {
+    assert(
+      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 spaceFactory(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)
+  }
+}