1 /* 2 * [The "BSD license"] 3 * Copyright (c) 2010 Terence Parr 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 package org.antlr.tool; 29 30 import org.antlr.analysis.DecisionProbe; 31 import org.stringtemplate.v4.ST; 32 33 import java.util.ArrayList; 34 import java.util.Collections; 35 import java.util.List; 36 import java.util.Set; 37 38 /** More a single alternative recurses so this decision is not regular. */ 39 public class NonRegularDecisionMessage extends Message { 40 public DecisionProbe probe; 41 public Set<Integer> altsWithRecursion; 42 NonRegularDecisionMessage(DecisionProbe probe, Set<Integer> altsWithRecursion)43 public NonRegularDecisionMessage(DecisionProbe probe, Set<Integer> altsWithRecursion) { 44 super(ErrorManager.MSG_NONREGULAR_DECISION); 45 this.probe = probe; 46 this.altsWithRecursion = altsWithRecursion; 47 } 48 toString()49 public String toString() { 50 GrammarAST decisionASTNode = probe.dfa.getDecisionASTNode(); 51 line = decisionASTNode.getLine(); 52 column = decisionASTNode.getCharPositionInLine(); 53 String fileName = probe.dfa.nfa.grammar.getFileName(); 54 if ( fileName!=null ) { 55 file = fileName; 56 } 57 58 ST st = getMessageTemplate(); 59 String ruleName = probe.dfa.getNFADecisionStartState().enclosingRule.name; 60 st.add("ruleName", ruleName); 61 List sortedAlts = new ArrayList(); 62 sortedAlts.addAll(altsWithRecursion); 63 Collections.sort(sortedAlts); // make sure it's 1, 2, ... 64 st.add("alts", sortedAlts); 65 66 return super.toString(st); 67 } 68 69 } 70