planning

node_modules/remark-parse/lib/tokenize/emphasis.js

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+'use strict'
+
+var trim = require('trim')
+var word = require('is-word-character')
+var whitespace = require('is-whitespace-character')
+var locate = require('../locate/emphasis')
+
+module.exports = emphasis
+emphasis.locator = locate
+
+var asterisk = '*'
+var underscore = '_'
+var backslash = '\\'
+
+function emphasis(eat, value, silent) {
+  var self = this
+  var index = 0
+  var character = value.charAt(index)
+  var now
+  var pedantic
+  var marker
+  var queue
+  var subvalue
+  var length
+  var prev
+
+  if (character !== asterisk && character !== underscore) {
+    return
+  }
+
+  pedantic = self.options.pedantic
+  subvalue = character
+  marker = character
+  length = value.length
+  index++
+  queue = ''
+  character = ''
+
+  if (pedantic && whitespace(value.charAt(index))) {
+    return
+  }
+
+  while (index < length) {
+    prev = character
+    character = value.charAt(index)
+
+    if (character === marker && (!pedantic || !whitespace(prev))) {
+      character = value.charAt(++index)
+
+      if (character !== marker) {
+        if (!trim(queue) || prev === marker) {
+          return
+        }
+
+        if (!pedantic && marker === underscore && word(character)) {
+          queue += marker
+          continue
+        }
+
+        /* istanbul ignore if - never used (yet) */
+        if (silent) {
+          return true
+        }
+
+        now = eat.now()
+        now.column++
+        now.offset++
+
+        return eat(subvalue + queue + marker)({
+          type: 'emphasis',
+          children: self.tokenizeInline(queue, now)
+        })
+      }
+
+      queue += marker
+    }
+
+    if (!pedantic && character === backslash) {
+      queue += character
+      character = value.charAt(++index)
+    }
+
+    queue += character
+    index++
+  }
+}