Mercurial > jsparser

annotate parser-demo.js @ 14:95b27aa47788 default tip

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
parse tree now displays as html.
author Atul Varma <varmaa@toolness.com>
date Sun, 31 May 2009 03:57:37 -0700
parents 1b7ea033b3f6
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
10
8de776b8ed31 made the demo work on the web instead of the command line.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
1 var MyLexicon = [
8de776b8ed31 made the demo work on the web instead of the command line.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
2 new Parsing.BinaryOrUnaryOp({name: 'plus',
8de776b8ed31 made the demo work on the web instead of the command line.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
3 match: '+',
8de776b8ed31 made the demo work on the web instead of the command line.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
4 leftBindingPower: 60}),
8de776b8ed31 made the demo work on the web instead of the command line.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
5
8de776b8ed31 made the demo work on the web instead of the command line.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
6 new Parsing.BinaryOrUnaryOp({name: 'minus',
8de776b8ed31 made the demo work on the web instead of the command line.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
7 match: '-',
8de776b8ed31 made the demo work on the web instead of the command line.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
8 leftBindingPower: 60}),
8de776b8ed31 made the demo work on the web instead of the command line.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
9
8de776b8ed31 made the demo work on the web instead of the command line.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
10 new Parsing.Symbol({name: 'left parenthesis',
8de776b8ed31 made the demo work on the web instead of the command line.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
11 match: '(',
8de776b8ed31 made the demo work on the web instead of the command line.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
12 nullDenotation: function(parser) {
8de776b8ed31 made the demo work on the web instead of the command line.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
13 var contents = parser.expression(0);
8de776b8ed31 made the demo work on the web instead of the command line.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
14 parser.advance('right parenthesis');
8de776b8ed31 made the demo work on the web instead of the command line.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
15 return contents;
8de776b8ed31 made the demo work on the web instead of the command line.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
16 }}),
8de776b8ed31 made the demo work on the web instead of the command line.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
17
8de776b8ed31 made the demo work on the web instead of the command line.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
18 new Parsing.Symbol({name: 'right parenthesis',
8de776b8ed31 made the demo work on the web instead of the command line.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
19 match: ')'}),
8de776b8ed31 made the demo work on the web instead of the command line.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
20
8de776b8ed31 made the demo work on the web instead of the command line.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
21 new Parsing.BinaryOp({name: 'multiply',
8de776b8ed31 made the demo work on the web instead of the command line.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
22 match: '*',
8de776b8ed31 made the demo work on the web instead of the command line.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
23 leftBindingPower: 70}),
8de776b8ed31 made the demo work on the web instead of the command line.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
24
8de776b8ed31 made the demo work on the web instead of the command line.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
25 new Parsing.BinaryOp({name: 'divide',
8de776b8ed31 made the demo work on the web instead of the command line.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
26 match: '/',
8de776b8ed31 made the demo work on the web instead of the command line.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
27 leftBindingPower: 70}),
8de776b8ed31 made the demo work on the web instead of the command line.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
28
8de776b8ed31 made the demo work on the web instead of the command line.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
29 new Parsing.Symbol({name: 'number',
8de776b8ed31 made the demo work on the web instead of the command line.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
30 match: /^[0-9]+/,
14
95b27aa47788 parse tree now displays as html.
Atul Varma <varmaa@toolness.com>
parents: 13
diff changeset
31 toHtml: function() {
95b27aa47788 parse tree now displays as html.
Atul Varma <varmaa@toolness.com>
parents: 13
diff changeset
32 return document.createTextNode(this.value);
95b27aa47788 parse tree now displays as html.
Atul Varma <varmaa@toolness.com>
parents: 13
diff changeset
33 },
10
8de776b8ed31 made the demo work on the web instead of the command line.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
34 nullDenotation: function() {
8de776b8ed31 made the demo work on the web instead of the command line.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
35 return this;
8de776b8ed31 made the demo work on the web instead of the command line.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
36 },
8de776b8ed31 made the demo work on the web instead of the command line.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
37 toString: function() {
8de776b8ed31 made the demo work on the web instead of the command line.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
38 return this.value;
8de776b8ed31 made the demo work on the web instead of the command line.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
39 }}),
8de776b8ed31 made the demo work on the web instead of the command line.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
40
8de776b8ed31 made the demo work on the web instead of the command line.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
41 new Parsing.Symbol({name: 'whitespace',
8de776b8ed31 made the demo work on the web instead of the command line.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
42 match: /^\s+/,
8de776b8ed31 made the demo work on the web instead of the command line.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
43 ignore: true})
8de776b8ed31 made the demo work on the web instead of the command line.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
44 ];
8de776b8ed31 made the demo work on the web instead of the command line.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
45
13
1b7ea033b3f6 input is interactive now, and tokenization/parsing errors are displayed.
Atul Varma <varmaa@toolness.com>
parents: 11
diff changeset
46 function onInputChange() {
1b7ea033b3f6 input is interactive now, and tokenization/parsing errors are displayed.
Atul Varma <varmaa@toolness.com>
parents: 11
diff changeset
47 var code = $('.input').val();
1b7ea033b3f6 input is interactive now, and tokenization/parsing errors are displayed.
Atul Varma <varmaa@toolness.com>
parents: 11
diff changeset
48 $('.tokenization').empty();
1b7ea033b3f6 input is interactive now, and tokenization/parsing errors are displayed.
Atul Varma <varmaa@toolness.com>
parents: 11
diff changeset
49 $('.parse-tree').empty();
1b7ea033b3f6 input is interactive now, and tokenization/parsing errors are displayed.
Atul Varma <varmaa@toolness.com>
parents: 11
diff changeset
50
14
95b27aa47788 parse tree now displays as html.
Atul Varma <varmaa@toolness.com>
parents: 13
diff changeset
51 if (!code)
95b27aa47788 parse tree now displays as html.
Atul Varma <varmaa@toolness.com>
parents: 13
diff changeset
52 return;
95b27aa47788 parse tree now displays as html.
Atul Varma <varmaa@toolness.com>
parents: 13
diff changeset
53
13
1b7ea033b3f6 input is interactive now, and tokenization/parsing errors are displayed.
Atul Varma <varmaa@toolness.com>
parents: 11
diff changeset
54 try {
10
8de776b8ed31 made the demo work on the web instead of the command line.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
55 var tokens = Parsing.tokenize({lexicon: MyLexicon,
8de776b8ed31 made the demo work on the web instead of the command line.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
56 text: code});
13
1b7ea033b3f6 input is interactive now, and tokenization/parsing errors are displayed.
Atul Varma <varmaa@toolness.com>
parents: 11
diff changeset
57 } catch (e) {
1b7ea033b3f6 input is interactive now, and tokenization/parsing errors are displayed.
Atul Varma <varmaa@toolness.com>
parents: 11
diff changeset
58 $('.tokenization').text(e.message);
1b7ea033b3f6 input is interactive now, and tokenization/parsing errors are displayed.
Atul Varma <varmaa@toolness.com>
parents: 11
diff changeset
59 throw e;
1b7ea033b3f6 input is interactive now, and tokenization/parsing errors are displayed.
Atul Varma <varmaa@toolness.com>
parents: 11
diff changeset
60 }
10
8de776b8ed31 made the demo work on the web instead of the command line.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
61
13
1b7ea033b3f6 input is interactive now, and tokenization/parsing errors are displayed.
Atul Varma <varmaa@toolness.com>
parents: 11
diff changeset
62 jQuery.each(
1b7ea033b3f6 input is interactive now, and tokenization/parsing errors are displayed.
Atul Varma <varmaa@toolness.com>
parents: 11
diff changeset
63 tokens,
1b7ea033b3f6 input is interactive now, and tokenization/parsing errors are displayed.
Atul Varma <varmaa@toolness.com>
parents: 11
diff changeset
64 function() {
1b7ea033b3f6 input is interactive now, and tokenization/parsing errors are displayed.
Atul Varma <varmaa@toolness.com>
parents: 11
diff changeset
65 var token = this;
1b7ea033b3f6 input is interactive now, and tokenization/parsing errors are displayed.
Atul Varma <varmaa@toolness.com>
parents: 11
diff changeset
66 var node = $('<span class="token"></span>');
1b7ea033b3f6 input is interactive now, and tokenization/parsing errors are displayed.
Atul Varma <varmaa@toolness.com>
parents: 11
diff changeset
67 node.text(token.value);
1b7ea033b3f6 input is interactive now, and tokenization/parsing errors are displayed.
Atul Varma <varmaa@toolness.com>
parents: 11
diff changeset
68 node.hover(
1b7ea033b3f6 input is interactive now, and tokenization/parsing errors are displayed.
Atul Varma <varmaa@toolness.com>
parents: 11
diff changeset
69 function onIn() {
1b7ea033b3f6 input is interactive now, and tokenization/parsing errors are displayed.
Atul Varma <varmaa@toolness.com>
parents: 11
diff changeset
70 var overlay = $('<div class="overlay"></div>');
1b7ea033b3f6 input is interactive now, and tokenization/parsing errors are displayed.
Atul Varma <varmaa@toolness.com>
parents: 11
diff changeset
71 overlay.text(token.name);
1b7ea033b3f6 input is interactive now, and tokenization/parsing errors are displayed.
Atul Varma <varmaa@toolness.com>
parents: 11
diff changeset
72 overlay.css({left: $(this).position().left});
1b7ea033b3f6 input is interactive now, and tokenization/parsing errors are displayed.
Atul Varma <varmaa@toolness.com>
parents: 11
diff changeset
73 $(this).append(overlay);
1b7ea033b3f6 input is interactive now, and tokenization/parsing errors are displayed.
Atul Varma <varmaa@toolness.com>
parents: 11
diff changeset
74 $(this).addClass("highlight");
1b7ea033b3f6 input is interactive now, and tokenization/parsing errors are displayed.
Atul Varma <varmaa@toolness.com>
parents: 11
diff changeset
75 },
1b7ea033b3f6 input is interactive now, and tokenization/parsing errors are displayed.
Atul Varma <varmaa@toolness.com>
parents: 11
diff changeset
76 function onOut() {
1b7ea033b3f6 input is interactive now, and tokenization/parsing errors are displayed.
Atul Varma <varmaa@toolness.com>
parents: 11
diff changeset
77 $(".overlay", this).remove();
1b7ea033b3f6 input is interactive now, and tokenization/parsing errors are displayed.
Atul Varma <varmaa@toolness.com>
parents: 11
diff changeset
78 $(this).removeClass("highlight");
1b7ea033b3f6 input is interactive now, and tokenization/parsing errors are displayed.
Atul Varma <varmaa@toolness.com>
parents: 11
diff changeset
79 });
1b7ea033b3f6 input is interactive now, and tokenization/parsing errors are displayed.
Atul Varma <varmaa@toolness.com>
parents: 11
diff changeset
80 $('.tokenization').append(node);
1b7ea033b3f6 input is interactive now, and tokenization/parsing errors are displayed.
Atul Varma <varmaa@toolness.com>
parents: 11
diff changeset
81 });
10
8de776b8ed31 made the demo work on the web instead of the command line.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
82
13
1b7ea033b3f6 input is interactive now, and tokenization/parsing errors are displayed.
Atul Varma <varmaa@toolness.com>
parents: 11
diff changeset
83 var parser = new Parsing.Parser(tokens);
1b7ea033b3f6 input is interactive now, and tokenization/parsing errors are displayed.
Atul Varma <varmaa@toolness.com>
parents: 11
diff changeset
84 var parseTree;
1b7ea033b3f6 input is interactive now, and tokenization/parsing errors are displayed.
Atul Varma <varmaa@toolness.com>
parents: 11
diff changeset
85 try {
1b7ea033b3f6 input is interactive now, and tokenization/parsing errors are displayed.
Atul Varma <varmaa@toolness.com>
parents: 11
diff changeset
86 parseTree = parser.parse();
1b7ea033b3f6 input is interactive now, and tokenization/parsing errors are displayed.
Atul Varma <varmaa@toolness.com>
parents: 11
diff changeset
87 } catch (e) {
1b7ea033b3f6 input is interactive now, and tokenization/parsing errors are displayed.
Atul Varma <varmaa@toolness.com>
parents: 11
diff changeset
88 $('.parse-tree').text(e.message);
1b7ea033b3f6 input is interactive now, and tokenization/parsing errors are displayed.
Atul Varma <varmaa@toolness.com>
parents: 11
diff changeset
89 throw e;
1b7ea033b3f6 input is interactive now, and tokenization/parsing errors are displayed.
Atul Varma <varmaa@toolness.com>
parents: 11
diff changeset
90 }
1b7ea033b3f6 input is interactive now, and tokenization/parsing errors are displayed.
Atul Varma <varmaa@toolness.com>
parents: 11
diff changeset
91
14
95b27aa47788 parse tree now displays as html.
Atul Varma <varmaa@toolness.com>
parents: 13
diff changeset
92 $('.parse-tree').append(parseTree.toHtml());
13
1b7ea033b3f6 input is interactive now, and tokenization/parsing errors are displayed.
Atul Varma <varmaa@toolness.com>
parents: 11
diff changeset
93 }
1b7ea033b3f6 input is interactive now, and tokenization/parsing errors are displayed.
Atul Varma <varmaa@toolness.com>
parents: 11
diff changeset
94
1b7ea033b3f6 input is interactive now, and tokenization/parsing errors are displayed.
Atul Varma <varmaa@toolness.com>
parents: 11
diff changeset
95 $(window).ready(
1b7ea033b3f6 input is interactive now, and tokenization/parsing errors are displayed.
Atul Varma <varmaa@toolness.com>
parents: 11
diff changeset
96 function() {
1b7ea033b3f6 input is interactive now, and tokenization/parsing errors are displayed.
Atul Varma <varmaa@toolness.com>
parents: 11
diff changeset
97 $('.input').keyup(onInputChange);
1b7ea033b3f6 input is interactive now, and tokenization/parsing errors are displayed.
Atul Varma <varmaa@toolness.com>
parents: 11
diff changeset
98 onInputChange();
10
8de776b8ed31 made the demo work on the web instead of the command line.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
99 });