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tristan/test.html

Created September 30, 2010 13:16
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test.html
<html>
<head>
<script type="text/javascript" src="antlr3-all.js"></script>
<script type="text/javascript" src="SimpleCalcLexer.js"></script>
<script type="text/javascript" src="SimpleCalcParser.js"></script>
<script type="text/javascript" src="SimpleCalcWalker.js"></script>
<script type="text/javascript">
function parse() {
var input = document.getElementById("expr").value;
cstream = new org.antlr.runtime.ANTLRStringStream(input);
lexer = new SimpleCalcLexer(cstream);
tstream = new org.antlr.runtime.CommonTokenStream(lexer);
parser = new SimpleCalcParser(tstream);
r = parser.evaluate();
var nodes = new org.antlr.runtime.tree.CommonTreeNodeStream(r.getTree());
nodes.setTokenStream(tstream);
var walker = new SimpleCalcWalker(nodes);
var result = walker.eval();
console.log(result);
document.getElementById("res").value = result;
}
</script>
</head>
<body>
<input id="expr" type="text" value="1+1"/><input type="submit" value="go" onclick="parse();"/><br/>
<input id="res" type="text" value=""/>
</body>
</html>
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