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ANTLR Runtime Source Code
ANTLR is a powerful parser generator for multiple programming languages including Java.
ANTLR contains 2 major modules:
ANTLR Runtime Source Code files are provided in the distribution packge (antlr4-4.10.1.zip). You can download them at ANTLR Website.
You can also browse the source code below:
✍: FYIcenter
⏎ org/antlr/v4/runtime/atn/ArrayPredictionContext.java
/* * Copyright (c) 2012-2017 The ANTLR Project. All rights reserved. * Use of this file is governed by the BSD 3-clause license that * can be found in the LICENSE.txt file in the project root. */ package org.antlr.v4.runtime.atn; import java.util.Arrays; public class ArrayPredictionContext extends PredictionContext { /** Parent can be null only if full ctx mode and we make an array * from {@link #EMPTY} and non-empty. We merge {@link #EMPTY} by using null parent and * returnState == {@link #EMPTY_RETURN_STATE}. */ public final PredictionContext[] parents; /** Sorted for merge, no duplicates; if present, * {@link #EMPTY_RETURN_STATE} is always last. */ public final int[] returnStates; public ArrayPredictionContext(SingletonPredictionContext a) { this(new PredictionContext[] {a.parent}, new int[] {a.returnState}); } public ArrayPredictionContext(PredictionContext[] parents, int[] returnStates) { super(calculateHashCode(parents, returnStates)); assert parents!=null && parents.length>0; assert returnStates!=null && returnStates.length>0; // System.err.println("CREATE ARRAY: "+Arrays.toString(parents)+", "+Arrays.toString(returnStates)); this.parents = parents; this.returnStates = returnStates; } @Override public boolean isEmpty() { // since EMPTY_RETURN_STATE can only appear in the last position, we // don't need to verify that size==1 return returnStates[0]==EMPTY_RETURN_STATE; } @Override public int size() { return returnStates.length; } @Override public PredictionContext getParent(int index) { return parents[index]; } @Override public int getReturnState(int index) { return returnStates[index]; } // @Override // public int findReturnState(int returnState) { // return Arrays.binarySearch(returnStates, returnState); // } @Override public boolean equals(Object o) { if (this == o) { return true; } else if ( !(o instanceof ArrayPredictionContext) ) { return false; } if ( this.hashCode() != o.hashCode() ) { return false; // can't be same if hash is different } ArrayPredictionContext a = (ArrayPredictionContext)o; return Arrays.equals(returnStates, a.returnStates) && Arrays.equals(parents, a.parents); } @Override public String toString() { if ( isEmpty() ) return "[]"; StringBuilder buf = new StringBuilder(); buf.append("["); for (int i=0; i<returnStates.length; i++) { if ( i>0 ) buf.append(", "); if ( returnStates[i]==EMPTY_RETURN_STATE ) { buf.append("$"); continue; } buf.append(returnStates[i]); if ( parents[i]!=null ) { buf.append(' '); buf.append(parents[i].toString()); } else { buf.append("null"); } } buf.append("]"); return buf.toString(); } }
⏎ org/antlr/v4/runtime/atn/ArrayPredictionContext.java
Or download all of them as a single archive file:
File name: antlr-runtime-4.10.1-sources.jar File size: 308953 bytes Release date: 2022-04-15 Download
⇐ What Is ANTLR Parser Generator
2018-10-21, 31318👍, 0💬
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