1 /* 2 * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 package org.graalvm.compiler.code; 24 25 import static jdk.vm.ci.meta.MetaUtil.identityHashCodeString; 26 27 import org.graalvm.compiler.graph.NodeSourcePosition; 28 29 /** 30 * This provides a mapping between a half-open range of PCs in the generated code and a 31 * {@link NodeSourcePosition} in the original program. Depending on the backend this information may 32 * be represented in different ways or not at all. 33 */ 34 public final class SourceMapping { 35 36 private final int startOffset; 37 38 private final int endOffset; 39 40 private final NodeSourcePosition sourcePosition; 41 42 public SourceMapping(int startOffset, int endOffset, NodeSourcePosition sourcePosition) { 43 this.startOffset = startOffset; 44 this.endOffset = endOffset; 45 this.sourcePosition = sourcePosition; 46 } 47 48 public int getStartOffset() { 49 return startOffset; 50 } 51 52 public int getEndOffset() { 53 return endOffset; 54 } 55 56 public NodeSourcePosition getSourcePosition() { 57 return sourcePosition; 58 } 59 60 @Override 61 public String toString() { 62 return identityHashCodeString(this); 63 } 64 65 @Override 66 public int hashCode() { 67 throw new UnsupportedOperationException("hashCode"); 68 } 69 70 @Override 71 public boolean equals(Object obj) { 72 if (obj instanceof SourceMapping) { 73 SourceMapping other = (SourceMapping) obj; 74 return other.startOffset == startOffset && other.endOffset == endOffset && other.sourcePosition.equals(sourcePosition); 75 } 76 return false; 77 } 78 79 public boolean contains(int offset) { 80 return startOffset <= offset && offset < endOffset; 81 } 82 83 }