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.tool; 29324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 30324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruverimport org.antlr.analysis.DFAState; 31324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruverimport org.antlr.analysis.DecisionProbe; 32324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruverimport org.stringtemplate.v4.ST; 33324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 34324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruverimport java.util.ArrayList; 35324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruverimport java.util.Collections; 36324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruverimport java.util.List; 37324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 38324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver/** Reports a potential parsing issue with a decision; the decision is 39324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * nondeterministic in some way. 40324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver */ 41324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruverpublic class GrammarDanglingStateMessage extends Message { 42324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver public DecisionProbe probe; 43324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver public DFAState problemState; 44324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 45324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver public GrammarDanglingStateMessage(DecisionProbe probe, 46324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver DFAState problemState) 47324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver { 48324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver super(ErrorManager.MSG_DANGLING_STATE); 49324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver this.probe = probe; 50324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver this.problemState = problemState; 51324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 52324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 53324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver public String toString() { 54324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver GrammarAST decisionASTNode = probe.dfa.getDecisionASTNode(); 55324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver line = decisionASTNode.getLine(); 56324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver column = decisionASTNode.getCharPositionInLine(); 57324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver String fileName = probe.dfa.nfa.grammar.getFileName(); 58324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver if ( fileName!=null ) { 59324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver file = fileName; 60324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 61324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver List labels = probe.getSampleNonDeterministicInputSequence(problemState); 62324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver String input = probe.getInputSequenceDisplay(labels); 63324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver ST st = getMessageTemplate(); 64324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver List alts = new ArrayList(); 65324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver alts.addAll(problemState.getAltSet()); 66324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver Collections.sort(alts); 67324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver st.add("danglingAlts", alts); 68324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver st.add("input", input); 69324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 70324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver return super.toString(st); 71324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 72324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 73324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver} 74