update

node_modules/markdown-it/lib/parser_block.js

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+/** internal
+ * class ParserBlock
+ *
+ * Block-level tokenizer.
+ **/
+'use strict';
+
+
+var Ruler           = require('./ruler');
+
+
+var _rules = [
+  // First 2 params - rule name & source. Secondary array - list of rules,
+  // which can be terminated by this one.
+  [ 'table',      require('./rules_block/table'),      [ 'paragraph', 'reference' ] ],
+  [ 'code',       require('./rules_block/code') ],
+  [ 'fence',      require('./rules_block/fence'),      [ 'paragraph', 'reference', 'blockquote', 'list' ] ],
+  [ 'blockquote', require('./rules_block/blockquote'), [ 'paragraph', 'reference', 'blockquote', 'list' ] ],
+  [ 'hr',         require('./rules_block/hr'),         [ 'paragraph', 'reference', 'blockquote', 'list' ] ],
+  [ 'list',       require('./rules_block/list'),       [ 'paragraph', 'reference', 'blockquote' ] ],
+  [ 'reference',  require('./rules_block/reference') ],
+  [ 'heading',    require('./rules_block/heading'),    [ 'paragraph', 'reference', 'blockquote' ] ],
+  [ 'lheading',   require('./rules_block/lheading') ],
+  [ 'html_block', require('./rules_block/html_block'), [ 'paragraph', 'reference', 'blockquote' ] ],
+  [ 'paragraph',  require('./rules_block/paragraph') ]
+];
+
+
+/**
+ * new ParserBlock()
+ **/
+function ParserBlock() {
+  /**
+   * ParserBlock#ruler -> Ruler
+   *
+   * [[Ruler]] instance. Keep configuration of block rules.
+   **/
+  this.ruler = new Ruler();
+
+  for (var i = 0; i < _rules.length; i++) {
+    this.ruler.push(_rules[i][0], _rules[i][1], { alt: (_rules[i][2] || []).slice() });
+  }
+}
+
+
+// Generate tokens for input range
+//
+ParserBlock.prototype.tokenize = function (state, startLine, endLine) {
+  var ok, i,
+      rules = this.ruler.getRules(''),
+      len = rules.length,
+      line = startLine,
+      hasEmptyLines = false,
+      maxNesting = state.md.options.maxNesting;
+
+  while (line < endLine) {
+    state.line = line = state.skipEmptyLines(line);
+    if (line >= endLine) { break; }
+
+    // Termination condition for nested calls.
+    // Nested calls currently used for blockquotes & lists
+    if (state.sCount[line] < state.blkIndent) { break; }
+
+    // If nesting level exceeded - skip tail to the end. That's not ordinary
+    // situation and we should not care about content.
+    if (state.level >= maxNesting) {
+      state.line = endLine;
+      break;
+    }
+
+    // Try all possible rules.
+    // On success, rule should:
+    //
+    // - update `state.line`
+    // - update `state.tokens`
+    // - return true
+
+    for (i = 0; i < len; i++) {
+      ok = rules[i](state, line, endLine, false);
+      if (ok) { break; }
+    }
+
+    // set state.tight if we had an empty line before current tag
+    // i.e. latest empty line should not count
+    state.tight = !hasEmptyLines;
+
+    // paragraph might "eat" one newline after it in nested lists
+    if (state.isEmpty(state.line - 1)) {
+      hasEmptyLines = true;
+    }
+
+    line = state.line;
+
+    if (line < endLine && state.isEmpty(line)) {
+      hasEmptyLines = true;
+      line++;
+      state.line = line;
+    }
+  }
+};
+
+
+/**
+ * ParserBlock.parse(str, md, env, outTokens)
+ *
+ * Process input string and push block tokens into `outTokens`
+ **/
+ParserBlock.prototype.parse = function (src, md, env, outTokens) {
+  var state;
+
+  if (!src) { return; }
+
+  state = new this.State(src, md, env, outTokens);
+
+  this.tokenize(state, state.line, state.lineMax);
+};
+
+
+ParserBlock.prototype.State = require('./rules_block/state_block');
+
+
+module.exports = ParserBlock;