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Diffstat (limited to 'src/proguard/optimize/evaluation/StoringInvocationUnit.java')
| -rw-r--r-- | src/proguard/optimize/evaluation/StoringInvocationUnit.java | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/src/proguard/optimize/evaluation/StoringInvocationUnit.java b/src/proguard/optimize/evaluation/StoringInvocationUnit.java new file mode 100644 index 0000000..bcbb69f --- /dev/null +++ b/src/proguard/optimize/evaluation/StoringInvocationUnit.java @@ -0,0 +1,207 @@ +/* + * ProGuard -- shrinking, optimization, obfuscation, and preverification + * of Java bytecode. + * + * Copyright (c) 2002-2009 Eric Lafortune (eric@graphics.cornell.edu) + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the Free + * Software Foundation; either version 2 of the License, or (at your option) + * any later version. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ +package proguard.optimize.evaluation; + +import proguard.classfile.*; +import proguard.classfile.constant.RefConstant; +import proguard.evaluation.BasicInvocationUnit; +import proguard.evaluation.value.*; +import proguard.optimize.info.*; + +/** + * This InvocationUbit stores parameter values and return values with the + * methods that are invoked. + * + * @see LoadingInvocationUnit + * @author Eric Lafortune + */ +public class StoringInvocationUnit +extends BasicInvocationUnit +{ + private boolean storeFieldValues; + private boolean storeMethodParameterValues; + private boolean storeMethodReturnValues; + + + /** + * Creates a new StoringInvocationUnit with the given value factory. + */ + public StoringInvocationUnit(ValueFactory valueFactory) + { + this(valueFactory, true, true, true); + } + + + /** + * Creates a new StoringInvocationUnit with the given value factory, for + * storing the specified values. + */ + public StoringInvocationUnit(ValueFactory valueFactory, + boolean storeFieldValues, + boolean storeMethodParameterValues, + boolean storeMethodReturnValues) + { + super(valueFactory); + + this.storeFieldValues = storeFieldValues; + this.storeMethodParameterValues = storeMethodParameterValues; + this.storeMethodReturnValues = storeMethodReturnValues; + } + + + // Implementations for BasicInvocationUnit. + + protected void setFieldClassValue(Clazz clazz, + RefConstant refConstant, + ReferenceValue value) + { + if (storeFieldValues) + { + Member referencedMember = refConstant.referencedMember; + if (referencedMember != null) + { + generalizeFieldClassValue((Field)referencedMember, value); + } + } + } + + + protected void setFieldValue(Clazz clazz, + RefConstant refConstant, + Value value) + { + if (storeFieldValues) + { + Member referencedMember = refConstant.referencedMember; + if (referencedMember != null) + { + generalizeFieldValue((Field)referencedMember, value); + } + } + } + + + protected void setMethodParameterValue(Clazz clazz, + RefConstant refConstant, + int parameterIndex, + Value value) + { + if (storeMethodParameterValues) + { + Member referencedMember = refConstant.referencedMember; + if (referencedMember != null) + { + generalizeMethodParameterValue((Method)referencedMember, + parameterIndex, + value); + } + } + } + + + protected void setMethodReturnValue(Clazz clazz, + Method method, + Value value) + { + if (storeMethodReturnValues) + { + generalizeMethodReturnValue(method, value); + } + } + + + // Small utility methods. + + private static void generalizeFieldClassValue(Field field, ReferenceValue value) + { + FieldOptimizationInfo info = FieldOptimizationInfo.getFieldOptimizationInfo(field); + if (info != null) + { + info.generalizeReferencedClass(value); + } + } + + + public static ReferenceValue getFieldClassValue(Field field) + { + FieldOptimizationInfo info = FieldOptimizationInfo.getFieldOptimizationInfo(field); + return info != null ? + info.getReferencedClass() : + null; + } + + + private static void generalizeFieldValue(Field field, Value value) + { + FieldOptimizationInfo info = FieldOptimizationInfo.getFieldOptimizationInfo(field); + if (info != null) + { + info.generalizeValue(value); + } + } + + + public static Value getFieldValue(Field field) + { + FieldOptimizationInfo info = FieldOptimizationInfo.getFieldOptimizationInfo(field); + return info != null ? + info.getValue() : + null; + } + + + private static void generalizeMethodParameterValue(Method method, int parameterIndex, Value value) + { + MethodOptimizationInfo info = MethodOptimizationInfo.getMethodOptimizationInfo(method); + if (info != null) + { + info.generalizeParameter(parameterIndex, value); + } + } + + + public static Value getMethodParameterValue(Method method, int parameterIndex) + { + MethodOptimizationInfo info = MethodOptimizationInfo.getMethodOptimizationInfo(method); + return info != null ? + info.getParameter(parameterIndex) : + null; + } + + + private static void generalizeMethodReturnValue(Method method, Value value) + { + MethodOptimizationInfo info = MethodOptimizationInfo.getMethodOptimizationInfo(method); + if (info != null) + { + info.generalizeReturnValue(value); + } + } + + + public static Value getMethodReturnValue(Method method) + { + MethodOptimizationInfo info = MethodOptimizationInfo.getMethodOptimizationInfo(method); + return info != null ? + info.getReturnValue() : + null; + } +} |