<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<meta http-equiv="content-type" content="text/html;charset=utf-8" />
<title>t048rewrite</title>

<!-- ANTLR includes -->
<script type="text/javascript" src="../../lib/antlr3-all.js"></script>
<script type="text/javascript" src="t048rewrite.js"></script>

<!-- JsUnit include -->
<script type="text/javascript" src="../jsunit/app/jsUnitCore.js"></script>

<!-- Test Code -->
<script type="text/javascript">
    var TLexer = function() {
        TLexer.superclass.constructor.apply(this, arguments);
    };
    org.antlr.lang.extend(TLexer, t048rewrite, {
        recover: function(re) {
            /* don't recover, just crash */
            throw re;
        }
    });

    function _parse(xinput) {
        var cstream = new org.antlr.runtime.ANTLRStringStream(xinput),
            lexer = new TLexer(cstream),
            tstream = new org.antlr.runtime.TokenRewriteStream(lexer);
        tstream.LT(1); // fill buffer
        return tstream;
    }

    function testInsertBeforeIndex0() {
        var tokens = _parse("abc");
        tokens.insertBefore(0,"0");

        var result = tokens.toString(),
            expecting = "0abc";
        assertEquals(result, expecting);
    }

    function testInsertAfterLastIndex() {
        var tokens = _parse("abc");
        tokens.insertAfter(2,"x");

        var result = tokens.toString(),
            expecting = "abcx";
        assertEquals(result, expecting);
    }

    function test2InsertBeforeAfterMiddleIndex() {
        var tokens = _parse("abc");
        tokens.insertBefore(1,"x");
        tokens.insertAfter(1, "x");

        var result = tokens.toString(),
            expecting = "axbxc";
        assertEquals(result, expecting);
    }

    function testReplaceIndex0() {
        var tokens = _parse("abc");
        tokens.replace(0,"x");

        var result = tokens.toString(),
            expecting = "xbc";
        assertEquals(result, expecting);
    }

    function testReplaceLastIndex() {
        var tokens = _parse("abc");
        tokens.replace(2,"x");

        var result = tokens.toString(),
            expecting = "abx";
        assertEquals(result, expecting);
    }

    function testReplaceMiddleIndex() {
        var tokens = _parse("abc");
        tokens.replace(1,"x");

        var result = tokens.toString(),
            expecting = "axc";
        assertEquals(result, expecting);
    }

    function test2ReplaceMiddleIndex() {
        var tokens = _parse("abc");
        tokens.replace(1,"x");
        tokens.replace(1,"y");

        var result = tokens.toString(),
            expecting = "ayc";
        assertEquals(result, expecting);
    }

    function testReplaceThenDeleteMiddleIndex() {
        var tokens = _parse("abc");
        tokens.replace(1,"x");
        tokens.remove(1);

        var result = tokens.toString(),
            expecting = "ac";
        assertEquals(result, expecting);
    }

    function testReplaceThenInsertSameIndex() {
        var tokens = _parse("abc");
        tokens.replace(0,"x");
        tokens.insertBefore(0,"0");

        var result = tokens.toString(),
            expecting = "0xbc";
        assertEquals(result, expecting);
    }

    function testReplaceThen2InsertSameIndex() {
        var tokens = _parse("abc");
        tokens.replace(0,"x");
        tokens.insertBefore(0,"y");
        tokens.insertBefore(0,"z");

        var result = tokens.toString(),
            expecting = "zyxbc";
        assertEquals(result, expecting);
    }

    function testInsertThenReplaceSameIndex() {
        var tokens = _parse("abc");
        tokens.insertBefore(0,"0");
        tokens.replace(0,"x");

        var result = tokens.toString(),
            expecting = "0xbc";
        assertEquals(result, expecting);
    }

    function test2InsertMiddleIndex() {
        var tokens = _parse("abc");
        tokens.insertBefore(1,"x");
        tokens.insertBefore(1,"y");

        var result = tokens.toString(),
            expecting = "ayxbc";
        assertEquals(result, expecting);
    }

    function test2InsertThenReplaceIndex0() {
        var tokens = _parse("abc");
        tokens.insertBefore(0,"x");
        tokens.insertBefore(0,"y");
        tokens.replace(0,"z");

        var result = tokens.toString(),
            expecting = "yxzbc";
        assertEquals(result, expecting);
    }

    function testReplaceThenInsertBeforeLastIndex() {
        var tokens = _parse("abc");
        tokens.replace(2,"x");
        tokens.insertBefore(2,"y");

        var result = tokens.toString(),
            expecting = "abyx";
        assertEquals(result, expecting);
    }

    function testInsertThenReplaceLastIndex() {
        var tokens = _parse("abc");
        tokens.insertBefore(2,"y");
        tokens.replace(2,"x");

        var result = tokens.toString(),
            expecting = "abyx";
        assertEquals(result, expecting);
    }

    function testReplaceThenInsertLastIndex() {
        var tokens = _parse("abc");
        tokens.replace(2,"x");
        tokens.insertAfter(2,"y");

        var result = tokens.toString(),
            expecting = "abxy";
        assertEquals(result, expecting);
    }

    function testReplaceRangeThenInsertInMiddle() {
        var tokens = _parse("abcccba");
        tokens.replace(2,4,"x");
        tokens.insertBefore(3,"y");

        var result = tokens.toString(),
            expecting = "abxba";
        assertEquals(result, expecting);
    }

    function testReplaceRangeThenInsertAtLeftEdge() {
        var tokens = _parse("abcccba");
        tokens.replace(2,4,"x");
        tokens.insertBefore(2,"y");

        var result = tokens.toString(),
            expecting = "abyxba";
        assertEquals(result, expecting);
    }

    function testReplaceRangeThenInsertAtRightEdge() {
        var tokens = _parse("abcccba");
        tokens.replace(2,4,"x");
        tokens.insertBefore(4,"y");

        var result = tokens.toString(),
            expecting = "abxba";
        assertEquals(result, expecting);
    }

    function testReplaceRangeThenInsertAfterRightEdge() {
        var tokens = _parse("abcccba");
        tokens.replace(2,4,"x");
        tokens.insertAfter(4,"y");

        var result = tokens.toString(),
            expecting = "abxyba";
        assertEquals(result, expecting);
    }

    function testReplaceAll() {
        var tokens = _parse("abcccba");
        tokens.replace(0,6,"x");

        var result = tokens.toString(),
            expecting = "x";
        assertEquals(result, expecting);
    }

    function testReplaceSubsetThenFetch() {
        var tokens = _parse("abcccba");
        tokens.replace(2,4,"xyz");

        var result = tokens.toString(0,6),
            expecting = "abxyzba";
        assertEquals(result, expecting);
    }

    function testReplaceThenReplaceSuperset() {
        var tokens = _parse("abcccba");
        tokens.replace(2,4,"xyz");
        tokens.replace(2,5,"foo");

        var result = tokens.toString(),
            expecting = "abfooa";
        assertEquals(result, expecting);
    }

    function testReplaceThenReplaceLowerIndexedSuperset() {
        var tokens = _parse("abcccba");
        tokens.replace(2,4,"xyz");
        tokens.replace(1,3,"foo");

        var result = tokens.toString(),
            expecting = "afoocba";
        assertEquals(result, expecting);
    }

    function testReplaceSingleMiddleThenOverlappingSuperset() {
        var tokens = _parse("abcba");
        tokens.replace(2,2,"xyz");
        tokens.replace(0,3,"foo");

        var result = tokens.toString(),
            expecting = "fooa";
        assertEquals(result, expecting);
    }

</script>

</head>
<body>
    <h1>t048rewrite</h1>
</body>
</html>