Isolated rules management & rules cache build

lib/linkifier.js

@@ -13,11 +13,9 @@ var _rules = [
 
 
 function Linkifier() {
-  this._rules = [];
-
   this.options  = {};
 
-  this.ruler = new Ruler(this.rulesUpdate.bind(this));
+  this.ruler = new Ruler();
 
   for (var i = 0; i < _rules.length; i++) {
     this.ruler.push(_rules[i][0], _rules[i][1]);
@@ -25,11 +23,6 @@ function Linkifier() {
 }
 
 
-Linkifier.prototype.rulesUpdate = function () {
-  this._rules = this.ruler.getRules();
-};
-
-
 Linkifier.prototype.set = function (options) {
   assign(this.options, options);
 };
@@ -38,7 +31,7 @@ Linkifier.prototype.set = function (options) {
 Linkifier.prototype.process = function (state) {
   var i, l, rules;
 
-  rules = this._rules;
+  rules = this.ruler.getRules('');
 
   for (i = 0, l = rules.length; i < l; i++) {
     rules[i](this, state);

lib/parser_block.js

@@ -25,12 +25,7 @@ var _rules = [
 // Block Parser class
 //
 function ParserBlock() {
-  this._rules = [];
-  this._rulesParagraphTerm  = [];
-  this._rulesBlockquoteTerm = [];
-  this._rulesListTerm       = [];
-
-  this.ruler = new Ruler(this.rulesUpdate.bind(this));
+  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() });
@@ -38,20 +33,12 @@ function ParserBlock() {
 }
 
 
-ParserBlock.prototype.rulesUpdate = function () {
-  this._rules = this.ruler.getRules();
-  this._rulesParagraphTerm  = this.ruler.getRules('paragraph');
-  this._rulesBlockquoteTerm = this.ruler.getRules('blockquote');
-  this._rulesListTerm       = this.ruler.getRules('list');
-};
-
-
 // Generate tokens for input range
 //
 ParserBlock.prototype.tokenize = function (state, startLine, endLine) {
   var ok, i,
-      rules = this._rules,
-      len = this._rules.length,
+      rules = this.ruler.getRules(''),
+      len = rules.length,
       line = startLine,
       hasEmptyLines = false;
 

lib/parser_inline.js

@@ -47,7 +47,6 @@ function validateLink(url) {
 // Inline Parser class
 //
 function ParserInline() {
-  this._rules = [];
 
   // Rule to skip pure text
   // - '{}$%@+=:' reserved for extentions
@@ -57,7 +56,7 @@ function ParserInline() {
   // If you need to restrict it - override this with your validator.
   this.validateLink = validateLink;
 
-  this.ruler = new Ruler(this.rulesUpdate.bind(this));
+  this.ruler = new Ruler();
 
   for (var i = 0; i < _rules.length; i++) {
     this.ruler.push(_rules[i][0], _rules[i][1]);
@@ -65,17 +64,13 @@ function ParserInline() {
 }
 
 
-ParserInline.prototype.rulesUpdate = function () {
-  this._rules = this.ruler.getRules();
-};
-
-
 // Skip single token by running all rules in validation mode;
 // returns `true` if any rule reported success
 //
 ParserInline.prototype.skipToken = function (state) {
   var i, cached_pos, pos = state.pos,
-      len = this._rules.length;
+      rules = this.ruler.getRules(''),
+      len = rules.length;
 
   if ((cached_pos = state.cacheGet(pos)) > 0) {
     state.pos = cached_pos;
@@ -83,7 +78,7 @@ ParserInline.prototype.skipToken = function (state) {
   }
 
   for (i = 0; i < len; i++) {
-    if (this._rules[i](state, true)) {
+    if (rules[i](state, true)) {
       state.cacheSet(pos, state.pos);
       return;
     }
@@ -98,7 +93,8 @@ ParserInline.prototype.skipToken = function (state) {
 //
 ParserInline.prototype.tokenize = function (state) {
   var ok, i,
-      len = this._rules.length,
+      rules = this.ruler.getRules(''),
+      len = rules.length,
       end = state.posMax;
 
   while (state.pos < end) {
@@ -111,7 +107,7 @@ ParserInline.prototype.tokenize = function (state) {
     // - return true
 
     for (i = 0; i < len; i++) {
-      ok = this._rules[i](state, false);
+      ok = rules[i](state, false);
       if (ok) { break; }
     }
 

lib/ruler.js

@@ -9,9 +9,7 @@
 
 ////////////////////////////////////////////////////////////////////////////////
 
-function Ruler(compileFn) {
-  this.compile = compileFn; // callback to call after each change
-
+function Ruler() {
   // List of added rules. Each element is:
   //
   // {
@@ -22,6 +20,13 @@ function Ruler(compileFn) {
   // }
   //
   this.rules = [];
+
+  // Cached rule chains.
+  //
+  // First level - chain name, '' for default.
+  // Second level - diginal anchor for fast filtering by charcodes.
+  //
+  this.cache = null;
 }
 
 
@@ -47,7 +52,7 @@ Ruler.prototype.at = function (name, fn, options) {
 
   this.rules[index].fn = fn;
   this.rules[index].alt = opt.alt || [];
-  this.compile();
+  this.cache = null;
 };
 
 
@@ -66,7 +71,7 @@ Ruler.prototype.before = function (beforeName, ruleName, fn, options) {
     alt: opt.alt || []
   });
 
-  this.compile();
+  this.cache = null;
 };
 
 
@@ -85,7 +90,7 @@ Ruler.prototype.after = function (afterName, ruleName, fn, options) {
     alt: opt.alt || []
   });
 
-  this.compile();
+  this.cache = null;
 };
 
 // Add rule to the end of chain.
@@ -100,30 +105,7 @@ Ruler.prototype.push = function (ruleName, fn, options) {
     alt: opt.alt || []
   });
 
-  this.compile();
-};
-
-
-// Get rules list as array of functions. By default returns main chain
-//
-Ruler.prototype.getRules = function (chainName) {
-  var result = [];
-
-  if (!chainName) {
-    this.rules.forEach(function (rule) {
-      if (rule.enabled) {
-        result.push(rule.fn);
-      }
-    });
-    return result;
-  }
-
-  this.rules.forEach(function (rule) {
-    if (rule.alt.indexOf(chainName) >= 0 && rule.enabled) {
-      result.push(rule.fn);
-    }
-  });
-  return result;
+  this.cache = null;
 };
 
 
@@ -151,7 +133,7 @@ Ruler.prototype.enable = function (list, strict) {
 
   }, this);
 
-  this.compile();
+  this.cache = null;
 };
 
 
@@ -171,8 +153,50 @@ Ruler.prototype.disable = function (list) {
 
   }, this);
 
-  this.compile();
+  this.cache = null;
+};
+
+
+// Build rules lookup cache
+//
+Ruler.prototype.compile = function () {
+  var self = this;
+  var chains = [ '' ];
+
+  // collect unique names
+  self.rules.forEach(function (rule) {
+    if (!rule.enabled) { return; }
+
+    rule.alt.forEach(function (altName) {
+      if (chains.indexOf(altName) < 0) {
+        chains.push(altName);
+      }
+    });
+  });
+
+  self.cache = {};
+
+  chains.forEach(function (chain) {
+    self.cache[chain] = [];
+    self.rules.forEach(function (rule) {
+      if (!rule.enabled) { return; }
+
+      if (chain && rule.alt.indexOf(chain) < 0) { return; }
+
+      self.cache[chain].push(rule.fn);
+    });
+  });
 };
 
 
+// Get rules list as array of functions.
+//
+Ruler.prototype.getRules = function (chainName) {
+  if (this.cache === null) {
+    this.compile();
+  }
+
+  return this.cache[chainName];
+};
+
 module.exports = Ruler;

lib/rules_block/blockquote.js

@@ -5,7 +5,8 @@
 
 module.exports = function blockquote(state, startLine, endLine, silent) {
   var nextLine, lastLineEmpty, oldTShift, oldBMarks, oldIndent, oldParentType, lines,
-      terminatorRules = state.parser._rulesBlockquoteTerm, i, l, terminate,
+      terminatorRules,
+      i, l, terminate,
       pos = state.bMarks[startLine] + state.tShift[startLine],
       max = state.eMarks[startLine];
 
@@ -36,6 +37,8 @@ module.exports = function blockquote(state, startLine, endLine, silent) {
   oldTShift = [ state.tShift[startLine] ];
   state.tShift[startLine] = pos - state.bMarks[startLine];
 
+  terminatorRules = state.parser.ruler.getRules('blockquote');
+
   // Search the end of the block
   //
   // Block ends with either:

lib/rules_block/list.js

@@ -102,7 +102,7 @@ module.exports = function list(state, startLine, endLine, silent) {
       listLines,
       itemLines,
       tight = true,
-      terminatorRules = state.parser._rulesListTerm,
+      terminatorRules,
       i, l, terminate;
 
   // Detect list type and position after marker
@@ -150,6 +150,7 @@ module.exports = function list(state, startLine, endLine, silent) {
 
   nextLine = startLine;
   prevEmptyEnd = false;
+  terminatorRules = state.parser.ruler.getRules('list');
 
   while (nextLine < endLine) {
     contentStart = state.skipSpaces(posAfterMarker);

lib/rules_block/paragraph.js

@@ -9,25 +9,29 @@ var parseRef = require('../parser_ref');
 module.exports = function paragraph(state, startLine/*, endLine*/) {
   var endLine, content, pos, terminate, i, l,
       nextLine = startLine + 1,
-      terminatorRules = state.parser._rulesParagraphTerm;
+      terminatorRules;
 
   endLine = state.lineMax;
 
   // jump line-by-line until empty one or EOF
-  for (; nextLine < endLine && !state.isEmpty(nextLine); nextLine++) {
-    // this would be a code block normally, but after paragraph
-    // it's considered a lazy continuation regardless of what's there
-    if (state.tShift[nextLine] - state.blkIndent > 3) { continue; }
+  if (nextLine < endLine && !state.isEmpty(nextLine)) {
+    terminatorRules = state.parser.ruler.getRules('paragraph');
 
-    // Some tags can terminate paragraph without empty line.
-    terminate = false;
-    for (i = 0, l = terminatorRules.length; i < l; i++) {
-      if (terminatorRules[i](state, nextLine, endLine, true)) {
-        terminate = true;
-        break;
+    for (; nextLine < endLine && !state.isEmpty(nextLine); nextLine++) {
+      // this would be a code block normally, but after paragraph
+      // it's considered a lazy continuation regardless of what's there
+      if (state.tShift[nextLine] - state.blkIndent > 3) { continue; }
+
+      // Some tags can terminate paragraph without empty line.
+      terminate = false;
+      for (i = 0, l = terminatorRules.length; i < l; i++) {
+        if (terminatorRules[i](state, nextLine, endLine, true)) {
+          terminate = true;
+          break;
+        }
       }
+      if (terminate) { break; }
     }
-    if (terminate) { break; }
   }
 
   content = state.getLines(startLine, nextLine, state.blkIndent, false).trim();

lib/typographer.js

@@ -18,11 +18,9 @@ var _rules = [
 
 
 function Typographer() {
-  this._rules = [];
-
   this.options = {};
 
-  this.ruler = new Ruler(this.rulesUpdate.bind(this));
+  this.ruler = new Ruler();
 
   for (var i = 0; i < _rules.length; i++) {
     this.ruler.push(_rules[i][0], _rules[i][1]);
@@ -30,11 +28,6 @@ function Typographer() {
 }
 
 
-Typographer.prototype.rulesUpdate = function () {
-  this._rules = this.ruler.getRules();
-};
-
-
 Typographer.prototype.set = function (options) {
   assign(this.options, options);
 };
@@ -43,7 +36,7 @@ Typographer.prototype.set = function (options) {
 Typographer.prototype.process = function (state) {
   var i, l, rules;
 
-  rules = this._rules;
+  rules = this.ruler.getRules('');
 
   for (i = 0, l = rules.length; i < l; i++) {
     rules[i](this, state);