Renderer rules are now modifiable

lib/parser.js

@@ -3,6 +3,9 @@
 'use strict';
 
 
+var assign = require('object-assign');
+
+
 var State       = require('./state');
 var Renderer    = require('./renderer');
 var LexerBlock  = require('./lexer_block');
@@ -24,9 +27,7 @@ function Parser(options) {
 
 
 Parser.prototype.set = function (options) {
-  Object.keys(options).forEach(function (key) {
-    this.options[key] = options[key];
-  }, this);
+  assign(this.options, options);
 };
 
 

lib/renderer.js

@@ -1,6 +1,9 @@
 'use strict';
 
 
+var assign = require('object-assign');
+
+
 function escapeHtml(str) {
   return str.replace(/&/g, '&')
             .replace(/</g, '&lt;')
@@ -85,13 +88,16 @@ rules.text = function (state, token) {
 };
 
 
-// TODO: Stub. Do extendable.
+// Renderer class
 function Renderer() {
+  // Clone rules object to allow local modifications
+  this.rules = assign({}, rules);
 }
 
 Renderer.prototype.render = function (state) {
   var i, len, rule,
-      tokens = state.tokens;
+      tokens = state.tokens,
+      rules = this.rules;
 
   for (i = 0, len = tokens.length; i < len; i++) {
     rule = rules[tokens[i].type];

package.json

@@ -17,7 +17,8 @@
   ],
   "main": "index.js",
   "dependencies": {
-    "argparse": "~ 0.1.15"
+    "argparse": "~ 0.1.15",
+    "object-assign": "^1.0.0"
   },
   "devDependencies": {
     "ansi": "^0.3.0",