Moved nesting check from rules to upper level

lib/parser_block.js

@@ -49,7 +49,8 @@ ParserBlock.prototype.tokenize = function (state, startLine, endLine) {
       rules = this.ruler.getRules(''),
       len = rules.length,
       line = startLine,
-      hasEmptyLines = false;
+      hasEmptyLines = false,
+      maxNesting = state.md.options.maxNesting;
 
   while (line < endLine) {
     state.line = line = state.skipEmptyLines(line);
@@ -59,6 +60,13 @@ ParserBlock.prototype.tokenize = function (state, startLine, endLine) {
     // Nested calls currently used for blockquotes & lists
     if (state.tShift[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:
     //

lib/parser_inline.js

@@ -85,21 +85,30 @@ function ParserInline() {
 ParserInline.prototype.skipToken = function (state) {
   var i, cached_pos, pos = state.pos,
       rules = this.ruler.getRules(''),
-      len = rules.length;
+      len = rules.length,
+      maxNesting = state.md.options.maxNesting;
+
 
   if ((cached_pos = state.cacheGet(pos)) > 0) {
     state.pos = cached_pos;
     return;
   }
 
+  if (state.level < maxNesting) {
     for (i = 0; i < len; i++) {
       if (rules[i](state, true)) {
         state.cacheSet(pos, state.pos);
         return;
       }
     }
-
     state.pos++;
+
+  } else {
+    // If nesting level exceeded - skip tail to the end. That's not ordinary
+    // situation and we should not care about content.
+    state.pos = state.max;
+  }
+
   state.cacheSet(pos, state.pos);
 };
 
@@ -110,10 +119,17 @@ ParserInline.prototype.tokenize = function (state) {
   var ok, i,
       rules = this.ruler.getRules(''),
       len = rules.length,
-      end = state.posMax;
+      end = state.posMax,
+      maxNesting = state.md.options.maxNesting;
 
   while (state.pos < end) {
 
+    // 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.pos = end;
+      break;
+    }
     // Try all possible rules.
     // On success, rule should:
     //

lib/rules_block/blockquote.js

@@ -15,8 +15,6 @@ module.exports = function blockquote(state, startLine, endLine, silent) {
   // check the block quote marker
   if (state.src.charCodeAt(pos++) !== 0x3E/* > */) { return false; }
 
-  if (state.level >= state.md.options.maxNesting) { return false; }
-
   // we know that it's going to be a valid blockquote,
   // so no point trying to find the end of it in silent mode
   if (silent) { return true; }

lib/rules_block/deflist.js

@@ -71,8 +71,6 @@ module.exports = function deflist(state, startLine, endLine, silent) {
   contentStart = skipMarker(state, nextLine);
   if (contentStart < 0) { return false; }
 
-  if (state.level >= state.md.options.maxNesting) { return false; }
-
   // Start list
   listTokIdx = state.tokens.length;
 

lib/rules_block/footnote.js

@@ -13,7 +13,6 @@ module.exports = function footnote(state, startLine, endLine, silent) {
 
   if (state.src.charCodeAt(start) !== 0x5B/* [ */) { return false; }
   if (state.src.charCodeAt(start + 1) !== 0x5E/* ^ */) { return false; }
-  if (state.level >= state.md.options.maxNesting) { return false; }
 
   for (pos = start + 2; pos < max; pos++) {
     if (state.src.charCodeAt(pos) === 0x20) { return false; }

lib/rules_block/list.js

@@ -114,8 +114,6 @@ module.exports = function list(state, startLine, endLine, silent) {
     return false;
   }
 
-  if (state.level >= state.md.options.maxNesting) { return false; }
-
   // We should terminate list on style change. Remember first one to compare.
   markerCharCode = state.src.charCodeAt(posAfterMarker - 1);
 

lib/rules_inline/del.js

@@ -51,7 +51,6 @@ module.exports = function(state, silent) {
     return true;
   }
 
-  if (state.level >= state.md.options.maxNesting) { return false; }
   stack = Math.floor(startCount / 2);
   if (stack <= 0) { return false; }
   state.pos = start + startCount;

lib/rules_inline/emphasis.js

@@ -66,8 +66,6 @@ module.exports = function emphasis(state, silent) {
     return true;
   }
 
-  if (state.level >= state.md.options.maxNesting) { return false; }
-
   state.pos = start + startCount;
   stack = [ startCount ];
 

lib/rules_inline/footnote_inline.js

@@ -16,7 +16,6 @@ module.exports = function footnote_inline(state, silent) {
   if (start + 2 >= max) { return false; }
   if (state.src.charCodeAt(start) !== 0x5E/* ^ */) { return false; }
   if (state.src.charCodeAt(start + 1) !== 0x5B/* [ */) { return false; }
-  if (state.level >= state.md.options.maxNesting) { return false; }
 
   labelStart = start + 2;
   labelEnd = parseLinkLabel(state, start + 1);

lib/rules_inline/footnote_ref.js

@@ -17,7 +17,6 @@ module.exports = function footnote_ref(state, silent) {
   if (!state.env.footnotes || !state.env.footnotes.refs) { return false; }
   if (state.src.charCodeAt(start) !== 0x5B/* [ */) { return false; }
   if (state.src.charCodeAt(start + 1) !== 0x5E/* ^ */) { return false; }
-  if (state.level >= state.md.options.maxNesting) { return false; }
 
   for (pos = start + 2; pos < max; pos++) {
     if (state.src.charCodeAt(pos) === 0x20) { return false; }

lib/rules_inline/ins.js

@@ -51,7 +51,6 @@ module.exports = function(state, silent) {
     return true;
   }
 
-  if (state.level >= state.md.options.maxNesting) { return false; }
   stack = Math.floor(startCount / 2);
   if (stack <= 0) { return false; }
   state.pos = start + startCount;

lib/rules_inline/links.js

@@ -30,7 +30,6 @@ module.exports = function links(state, silent) {
   }
 
   if (marker !== 0x5B/* [ */) { return false; }
-  if (state.level >= state.md.options.maxNesting) { return false; }
 
   labelStart = start + 1;
   labelEnd = parseLinkLabel(state, start, !isImage);

lib/rules_inline/mark.js

@@ -51,7 +51,6 @@ module.exports = function(state, silent) {
     return true;
   }
 
-  if (state.level >= state.md.options.maxNesting) { return false; }
   stack = Math.floor(startCount / 2);
   if (stack <= 0) { return false; }
   state.pos = start + startCount;

lib/rules_inline/sub.js

@@ -14,7 +14,6 @@ module.exports = function sub(state, silent) {
   if (state.src.charCodeAt(start) !== 0x7E/* ~ */) { return false; }
   if (silent) { return false; } // don't run any pairs in validation mode
   if (start + 2 >= max) { return false; }
-  if (state.level >= state.md.options.maxNesting) { return false; }
 
   state.pos = start + 1;
 

lib/rules_inline/sup.js

@@ -14,7 +14,6 @@ module.exports = function sup(state, silent) {
   if (state.src.charCodeAt(start) !== 0x5E/* ^ */) { return false; }
   if (silent) { return false; } // don't run any pairs in validation mode
   if (start + 2 >= max) { return false; }
-  if (state.level >= state.md.options.maxNesting) { return false; }
 
   state.pos = start + 1;