+'use strict';
+
+module.exports = atxHeading;
+
+var C_NEWLINE = '\n';
+var C_TAB = '\t';
+var C_SPACE = ' ';
+var C_HASH = '#';
+
+var MAX_ATX_COUNT = 6;
+
+function atxHeading(eat, value, silent) {
+ var self = this;
+ var settings = self.options;
+ var length = value.length + 1;
+ var index = -1;
+ var now = eat.now();
+ var subvalue = '';
+ var content = '';
+ var character;
+ var queue;
+ var depth;
+
+ /* Eat initial spacing. */
+ while (++index < length) {
+ character = value.charAt(index);
+
+ if (character !== C_SPACE && character !== C_TAB) {
+ index--;
+ break;
+ }
+
+ subvalue += character;
+ }
+
+ /* Eat hashes. */
+ depth = 0;
+
+ while (++index <= length) {
+ character = value.charAt(index);
+
+ if (character !== C_HASH) {
+ index--;
+ break;
+ }
+
+ subvalue += character;
+ depth++;
+ }
+
+ if (depth > MAX_ATX_COUNT) {
+ return;
+ }
+
+ if (
+ !depth ||
+ (!settings.pedantic && value.charAt(index + 1) === C_HASH)
+ ) {
+ return;
+ }
+
+ length = value.length + 1;
+
+ /* Eat intermediate white-space. */
+ queue = '';
+
+ while (++index < length) {
+ character = value.charAt(index);
+
+ if (character !== C_SPACE && character !== C_TAB) {
+ index--;
+ break;
+ }
+
+ queue += character;
+ }
+
+ /* Exit when not in pedantic mode without spacing. */
+ if (
+ !settings.pedantic &&
+ queue.length === 0 &&
+ character &&
+ character !== C_NEWLINE
+ ) {
+ return;
+ }
+
+ if (silent) {
+ return true;
+ }
+
+ /* Eat content. */
+ subvalue += queue;
+ queue = '';
+ content = '';
+
+ while (++index < length) {
+ character = value.charAt(index);
+
+ if (!character || character === C_NEWLINE) {
+ break;
+ }
+
+ if (
+ character !== C_SPACE &&
+ character !== C_TAB &&
+ character !== C_HASH
+ ) {
+ content += queue + character;
+ queue = '';
+ continue;
+ }
+
+ while (character === C_SPACE || character === C_TAB) {
+ queue += character;
+ character = value.charAt(++index);
+ }
+
+ while (character === C_HASH) {
+ queue += character;
+ character = value.charAt(++index);
+ }
+
+ while (character === C_SPACE || character === C_TAB) {
+ queue += character;
+ character = value.charAt(++index);
+ }
+
+ index--;
+ }
+
+ now.column += subvalue.length;
+ now.offset += subvalue.length;
+ subvalue += content + queue;
+
+ return eat(subvalue)({
+ type: 'heading',
+ depth: depth,
+ children: self.tokenizeInline(content, now)
+ });
+}