1324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver/* 2324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * [The "BSD license"] 3324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * Copyright (c) 2010 Terence Parr 4324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * All rights reserved. 5324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * 6324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * Redistribution and use in source and binary forms, with or without 7324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * modification, are permitted provided that the following conditions 8324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * are met: 9324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * 1. Redistributions of source code must retain the above copyright 10324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * notice, this list of conditions and the following disclaimer. 11324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * 2. Redistributions in binary form must reproduce the above copyright 12324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * notice, this list of conditions and the following disclaimer in the 13324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * documentation and/or other materials provided with the distribution. 14324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * 3. The name of the author may not be used to endorse or promote products 15324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * derived from this software without specific prior written permission. 16324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * 17324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver */ 28324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruverpackage org.antlr.test; 29324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 30324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruverimport org.antlr.runtime.CommonToken; 31324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruverimport org.antlr.runtime.tree.BufferedTreeNodeStream; 32324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruverimport org.antlr.runtime.tree.CommonTree; 33324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruverimport org.antlr.runtime.tree.Tree; 34324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruverimport org.antlr.runtime.tree.TreeNodeStream; 35324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruverimport org.junit.Test; 36324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 37324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruverpublic class TestBufferedTreeNodeStream extends TestTreeNodeStream { 38324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver // inherits tests; these methods make it use a new buffer 39324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 40324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver public TreeNodeStream newStream(Object t) { 41324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver return new BufferedTreeNodeStream(t); 42324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 43324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 44324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver public String toTokenTypeString(TreeNodeStream stream) { 45324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver return ((BufferedTreeNodeStream)stream).toTokenTypeString(); 46324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 47324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 48324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver @Test public void testSeek() throws Exception { 49324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver // ^(101 ^(102 103 ^(106 107) ) 104 105) 50324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver // stream has 7 real + 6 nav nodes 51324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver // Sequence of types: 101 DN 102 DN 103 106 DN 107 UP UP 104 105 UP EOF 52324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver Tree r0 = new CommonTree(new CommonToken(101)); 53324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver Tree r1 = new CommonTree(new CommonToken(102)); 54324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver r0.addChild(r1); 55324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver r1.addChild(new CommonTree(new CommonToken(103))); 56324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver Tree r2 = new CommonTree(new CommonToken(106)); 57324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver r2.addChild(new CommonTree(new CommonToken(107))); 58324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver r1.addChild(r2); 59324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver r0.addChild(new CommonTree(new CommonToken(104))); 60324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver r0.addChild(new CommonTree(new CommonToken(105))); 61324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 62324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver TreeNodeStream stream = newStream(r0); 63324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver stream.consume(); // consume 101 64324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver stream.consume(); // consume DN 65324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver stream.consume(); // consume 102 66324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver stream.seek(7); // seek to 107 67324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver assertEquals(107, ((Tree)stream.LT(1)).getType()); 68324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver stream.consume(); // consume 107 69324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver stream.consume(); // consume UP 70324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver stream.consume(); // consume UP 71324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver assertEquals(104, ((Tree)stream.LT(1)).getType()); 72324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 73324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver} 74