planning

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

@@ -0,0 +1,102 @@
+'use strict'
+
+var assert = require('assert')
+var codes = require('../character/codes.js')
+var markdownLineEnding = require('../character/markdown-line-ending.js')
+var markdownSpace = require('../character/markdown-space.js')
+var constants = require('../constant/constants.js')
+var types = require('../constant/types.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 labelFactory(effects, ok, nok, type, markerType, stringType) {
+  var self = this
+  var size = 0
+  var data
+
+  return start
+
+  function start(code) {
+    assert__default['default'](code === codes.leftSquareBracket, 'expected `[`')
+    effects.enter(type)
+    effects.enter(markerType)
+    effects.consume(code)
+    effects.exit(markerType)
+    effects.enter(stringType)
+    return atBreak
+  }
+
+  function atBreak(code) {
+    if (
+      code === codes.eof ||
+      code === codes.leftSquareBracket ||
+      (code === codes.rightSquareBracket && !data) ||
+      /* c8 ignore next */
+      (code === codes.caret &&
+        /* c8 ignore next */
+        !size &&
+        /* c8 ignore next */
+        '_hiddenFootnoteSupport' in self.parser.constructs) ||
+      size > constants.linkReferenceSizeMax
+    ) {
+      return nok(code)
+    }
+
+    if (code === codes.rightSquareBracket) {
+      effects.exit(stringType)
+      effects.enter(markerType)
+      effects.consume(code)
+      effects.exit(markerType)
+      effects.exit(type)
+      return ok
+    }
+
+    if (markdownLineEnding(code)) {
+      effects.enter(types.lineEnding)
+      effects.consume(code)
+      effects.exit(types.lineEnding)
+      return atBreak
+    }
+
+    effects.enter(types.chunkString, {contentType: constants.contentTypeString})
+    return label(code)
+  }
+
+  function label(code) {
+    if (
+      code === codes.eof ||
+      code === codes.leftSquareBracket ||
+      code === codes.rightSquareBracket ||
+      markdownLineEnding(code) ||
+      size++ > constants.linkReferenceSizeMax
+    ) {
+      effects.exit(types.chunkString)
+      return atBreak(code)
+    }
+
+    effects.consume(code)
+    data = data || !markdownSpace(code)
+    return code === codes.backslash ? labelEscape : label
+  }
+
+  function labelEscape(code) {
+    if (
+      code === codes.leftSquareBracket ||
+      code === codes.backslash ||
+      code === codes.rightSquareBracket
+    ) {
+      effects.consume(code)
+      size++
+      return label
+    }
+
+    return label(code)
+  }
+}
+
+module.exports = labelFactory