--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/parser-demo.js	Sat May 30 16:08:25 2009 -0700
@@ -0,0 +1,68 @@
+var MyLexicon = [
+  new Parsing.BinaryOrUnaryOp({name: 'plus',
+                               match: '+',
+                               leftBindingPower: 60}),
+
+  new Parsing.BinaryOrUnaryOp({name: 'minus',
+                               match: '-',
+                               leftBindingPower: 60}),
+
+  new Parsing.Symbol({name: 'left parenthesis',
+                      match: '(',
+                      nullDenotation: function(parser) {
+                        var contents = parser.expression(0);
+                        parser.advance('right parenthesis');
+                        return contents;
+                      }}),
+
+  new Parsing.Symbol({name: 'right parenthesis',
+                      match: ')'}),
+
+  new Parsing.BinaryOp({name: 'multiply',
+                        match: '*',
+                        leftBindingPower: 70}),
+
+  new Parsing.BinaryOp({name: 'divide',
+                        match: '/',
+                        leftBindingPower: 70}),
+
+  new Parsing.Symbol({name: 'number',
+                      match: /^[0-9]+/,
+                      nullDenotation: function() {
+                        return this;
+                      },
+                      toString: function() {
+                        return this.value;
+                      }}),
+
+  new Parsing.Symbol({name: 'whitespace',
+                      match: /^\s+/,
+                      ignore: true})
+];
+
+$(window).ready(
+  function() {
+    function print(text) {
+      var node = document.createTextNode(text.toString() + '\n');
+      $('.output').append(node);
+    }
+
+    var code = $('.input').text();
+    var tokens = Parsing.tokenize({lexicon: MyLexicon,
+                                   text: code});
+
+    function printTokens(tokens) {
+      tokens.forEach(
+        function(token) {
+          var repr = token.name;
+          if (token.value)
+            repr += ":" + token.value;
+          repr += " @L" + token.lineNo + ":" + token.charNo;
+          print(repr);
+        });
+    }
+
+    printTokens(tokens);
+    var parser = new Parsing.Parser(tokens);
+    print(parser.parse());
+  });