1 /* 2 * [The "BSD license"] 3 * Copyright (c) 2014 Terence Parr 4 * Copyright (c) 2014 Sam Harwell 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 module antlr.v4.runtime.atn.PredicateEvalInfo; 32 33 import antlr.v4.runtime.TokenStream; 34 import antlr.v4.runtime.atn.ATNConfigSet; 35 import antlr.v4.runtime.atn.DecisionEventInfo; 36 import antlr.v4.runtime.atn.SemanticContext; 37 38 /** 39 * This class represents profiling event information for semantic predicate 40 * evaluations which occur during prediction. 41 * 42 * @see ParserATNSimulator#evalSemanticContext 43 * 44 * @since 4.3 45 */ 46 class PredicateEvalInfo : DecisionEventInfo 47 { 48 49 /** 50 * The semantic context which was evaluated. 51 */ 52 public SemanticContext semctx; 53 54 /** 55 * The alternative number for the decision which is guarded by the semantic 56 * context {@link #semctx}. Note that other ATN 57 * configurations may predict the same alternative which are guarded by 58 * other semantic contexts and/or {@link SemanticContext#NONE}. 59 */ 60 public int predictedAlt; 61 62 /** 63 * The result of evaluating the semantic context {@link #semctx}. 64 */ 65 public bool evalResult; 66 67 /** 68 * Constructs a new instance of the {@link PredicateEvalInfo} class with the 69 * specified detailed predicate evaluation information. 70 * 71 * @param decision The decision number 72 * @param input The input token stream 73 * @param startIndex The start index for the current prediction 74 * @param stopIndex The index at which the predicate evaluation was 75 * triggered. Note that the input stream may be reset to other positions for 76 * the actual evaluation of individual predicates. 77 * @param semctx The semantic context which was evaluated 78 * @param evalResult The results of evaluating the semantic context 79 * @param predictedAlt The alternative number for the decision which is 80 * guarded by the semantic context {@code semctx}. See {@link #predictedAlt} 81 * for more information. 82 * @param fullCtx {@code true} if the semantic context was 83 * evaluated during LL prediction; otherwise, {@code false} if the semantic 84 * context was evaluated during SLL prediction 85 * 86 * @see ParserATNSimulator#evalSemanticContext(SemanticContext, ParserRuleContext, int, boolean) 87 * @see SemanticContext#eval(Recognizer, RuleContext) 88 */ 89 public this(int decision, TokenStream input, int startIndex, int stopIndex, SemanticContext semctx, 90 bool evalResult, int predictedAlt, bool fullCtx) 91 { 92 super(decision, new ATNConfigSet(), input, startIndex, stopIndex, fullCtx); 93 this.semctx = semctx; 94 this.evalResult = evalResult; 95 this.predictedAlt = predictedAlt; 96 } 97 98 }