Mercurial > hg > Members > kono > jpf-core

annotate src/main/gov/nasa/jpf/vm/LocalVarInfo.java @ 0:61d41facf527

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initial v8 import (history reset)
author Peter Mehlitz <Peter.C.Mehlitz@nasa.gov>
date Fri, 23 Jan 2015 10:14:01 -0800
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1 /*
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2 * Copyright (C) 2014, United States Government, as represented by the
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3 * Administrator of the National Aeronautics and Space Administration.
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4 * All rights reserved.
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5 *
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6 * The Java Pathfinder core (jpf-core) platform is licensed under the
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7 * Apache License, Version 2.0 (the "License"); you may not use this file except
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8 * in compliance with the License. You may obtain a copy of the License at
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9 *
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10 * http://www.apache.org/licenses/LICENSE-2.0.
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11 *
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12 * Unless required by applicable law or agreed to in writing, software
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13 * distributed under the License is distributed on an "AS IS" BASIS,
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14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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15 * See the License for the specific language governing permissions and
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16 * limitations under the License.
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17 */
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18
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19 package gov.nasa.jpf.vm;
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20
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21 public class LocalVarInfo extends InfoObject {
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22 private final String name;
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23 private String type; // lazy initialized FQN according to JLS 6.7 (e.g. "int", "x.Y[]")
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24 private final String signature; // e.g. "I", "[Lx/Y;"
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25 private final String genericSignature; // non-type erased generic signature(s)
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26 private final int startPC;
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27 private final int endPC;
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28 private final int slotIndex;
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29
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30 public LocalVarInfo(String name, String signature, String genericSignature, int startPC, int endPC, int slotIndex){
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31
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32 this.name = name;
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33 this.signature = signature;
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34 this.genericSignature = genericSignature;
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35 this.startPC = startPC;
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36 this.endPC = endPC;
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37 this.slotIndex = slotIndex;
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38 }
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39
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40 @Override
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41 public String toString(){
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42 StringBuilder sb = new StringBuilder();
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43 sb.append("LocalVarInfo[");
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44 sb.append("name=\"");
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45 sb.append(name);
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46 sb.append("\",signature=\"");
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47 sb.append(signature);
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48 sb.append("\",startPC=");
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49 sb.append(startPC);
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50 sb.append(",endPC=");
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51 sb.append(endPC);
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52 sb.append(",slotIndex=");
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53 sb.append(slotIndex);
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54 sb.append("]");
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55
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56 return sb.toString();
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57 }
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58
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59 public String getName() {
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60 return name;
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61 }
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62
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63 public String getType() {
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64 if (type == null){
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65 type = Types.getTypeName(signature);
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66 }
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67 return type;
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68 }
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69
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70 public String getSignature() {
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71 return signature;
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72 }
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73
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74 public String getGenericSignature() {
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75 return genericSignature;
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76 }
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77
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78 public int getStartPC() {
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79 return startPC;
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80 }
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81
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82 public int getLength() {
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83 return endPC - startPC +1;
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84 }
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85
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86 public int getSlotIndex() {
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87 return slotIndex;
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88 }
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89
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90 public boolean matches (String name, int pc){
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91 return (startPC <= pc && endPC >= pc && this.name.equals(name));
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92 }
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93
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94 public boolean matches (int slotIdx, int pc){
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95 return (slotIdx == slotIndex) && (pc >= startPC) && (pc <= endPC);
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96 }
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97
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98 public boolean isNumeric(){
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99 char c = signature.charAt(0);
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100 return (c == 'B' || c == 'S' || c == 'I' || c == 'J' || c == 'F' || c == 'D');
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101 }
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102
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103 public boolean isBoolean(){
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104 char c = signature.charAt(0);
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105 return (c == 'Z');
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106 }
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107
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108 public int getSlotSize(){
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109 char c = signature.charAt(0);
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110 if (c == 'J' || c == 'D'){
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111 return 2;
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112 } else {
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113 return 1;
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114 }
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115 }
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116
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117 public boolean isFloatingPoint(){
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118 char c = signature.charAt(0);
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119 return (c == 'F' || c == 'D');
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120 }
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121 }
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122