Add standard way to embed other mode/highlighters

lib/ace/mode/text.js

@@ -140,6 +140,44 @@ var Mode = function() {
 
         editor.session.$selectionOccurrences = [];
     };
+    
+    this.createModeDelegates = function (mapping) {
+        if (!this.$embeds) {
+            return;
+        }
+        this.$modes = {};
+        for (var i = 0; i < this.$embeds.length; i++) {
+            this.$modes[this.$embeds[i]] = new mapping[this.$embeds[i]]();
+        }
+        
+        var delegations = ['toggleCommentLines', 'getNextLineIndent', 'checkOutdent', 'autoOutdent'];
+
+        for (var i = 0; i < delegations.length; i++) {
+            (function(scope) {
+              var functionName = delegations[i];
+              var defaultHandler = scope[functionName];
+              scope[delegations[i]] = function() {
+                  return this.$delegator(functionName, arguments, defaultHandler);
+              }
+            } (this));
+        }
+    }
+    
+    this.$delegator = function(method, args, defaultHandler) {
+        var state = args[0];
+        
+        for (var i = 0; i < this.$embeds.length; i++) {
+            var split = state.split(this.$embeds[i]);
+        
+            if (!split[0] && split[1]) {
+                args[0] = split[1];
+                var mode = this.$modes[this.$embeds[i]];
+                return mode[method].apply(mode, args);
+            }
+        }
+        
+        return defaultHandler ? defaultHandler.apply(this, args) : undefined;
+    };
 
 }).call(Mode.prototype);
 

lib/ace/mode/text_highlight_rules.js

@@ -73,6 +73,34 @@ var TextHighlightRules = function() {
     this.getRules = function() {
         return this.$rules;
     };
+    
+    this.embedRules = function (HighlightRules, prefix, escapeRules, states) {
+        var embedRules = new HighlightRules().getRules();
+        if (states) {
+            for (var i = 0; i < states.length; i++) {
+                states[i] = prefix + states[i];
+            }
+        } else {
+            states = [];
+            for (var key in embedRules) {
+                states.push(prefix + key);
+            }
+        }
+        this.addRules(embedRules, prefix);
+        
+        for (var i = 0; i < states.length; i++) {
+            Array.prototype.unshift.apply(this.$rules[states[i]], escapeRules);
+        }
+        
+        if (!this.$embeds) {
+            this.$embeds = [];
+        }
+        this.$embeds.push(prefix);
+    }
+    
+    this.getEmbeds = function() {
+        return this.$embeds;
+    }
 
 }).call(TextHighlightRules.prototype);