small refactor.

lib/marked.js

@@ -89,11 +89,11 @@ Lexer.lex = function(src, options) {
 };
 
 Lexer.prototype.lex = function(src) {
-  this.src = src
+  src = src
     .replace(/\r\n|\r/g, '\n')
     .replace(/\t/g, '    ');
 
-  return this.token(this.src, true);
+  return this.token(src, true);
 };
 
 Lexer.prototype.token = function(src, top) {
@@ -562,9 +562,6 @@ Parser.prototype.parse = function(src) {
     out += this.tok();
   }
 
-  this.tokens = [];
-  this.token = null;
-
   return out;
 };
 
@@ -572,12 +569,14 @@ Parser.prototype.next = function() {
   return this.token = this.tokens.pop();
 };
 
-Parser.prototype.parseText = function() {
-  var body = this.token.text
-    , top;
+Parser.prototype.peek = function() {
+  return this.tokens[this.tokens.length-1] || 0;
+};
 
-  while ((top = this.tokens[this.tokens.length-1])
-         && top.type === 'text') {
+Parser.prototype.parseText = function() {
+  var body = this.token.text;
+
+  while (this.peek().type === 'text') {
     body += '\n' + this.next().text;
   }