diff jsparser.js @ 10:8de776b8ed31

made the demo work on the web instead of the command line.
author Atul Varma <varmaa@toolness.com>
date Sat, 30 May 2009 16:08:25 -0700
parents bc6f30e0f948
children 95b27aa47788
line wrap: on
line diff
--- a/jsparser.js	Sat May 30 15:38:03 2009 -0700
+++ b/jsparser.js	Sat May 30 16:08:25 2009 -0700
@@ -168,68 +168,3 @@
     return value;
   };
 };
-
-function testParsing(print) {
-  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})
-  ];
-
-  var code = '5+(1-3) * 4+       \n     -4';
-  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());
-}
-
-testParsing(print);