| /* |
| * ProGuard -- shrinking, optimization, obfuscation, and preverification |
| * of Java bytecode. |
| * |
| * Copyright (c) 2002-2014 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.info; |
| |
| import proguard.classfile.*; |
| import proguard.classfile.util.*; |
| import proguard.evaluation.value.Value; |
| |
| /** |
| * This class stores some optimization information that can be attached to |
| * a method. |
| * |
| * @author Eric Lafortune |
| */ |
| public class MethodOptimizationInfo |
| { |
| private boolean hasNoSideEffects = false; |
| private boolean hasSideEffects = false; |
| private boolean canBeMadePrivate = true; |
| private boolean catchesExceptions = false; |
| private boolean branchesBackward = false; |
| private boolean invokesSuperMethods = false; |
| private boolean invokesDynamically = false; |
| private boolean accessesPrivateCode = false; |
| private boolean accessesPackageCode = false; |
| private boolean accessesProtectedCode = false; |
| private int invocationCount = 0; |
| private int parameterSize = 0; |
| private long usedParameters = 0L; |
| private Value[] parameters; |
| private Value returnValue; |
| |
| |
| /** |
| * Creates a new MethodOptimizationInfo for the given method. |
| */ |
| public MethodOptimizationInfo(Clazz clazz, Method method) |
| { |
| // Set up an array of the right size for storing information about the |
| // passed parameters. |
| int parameterCount = |
| ClassUtil.internalMethodParameterCount(method.getDescriptor(clazz)); |
| |
| if ((method.getAccessFlags() & ClassConstants.ACC_STATIC) == 0) |
| { |
| parameterCount++; |
| } |
| |
| if (parameterCount > 0) |
| { |
| parameters = new Value[parameterCount]; |
| } |
| } |
| |
| |
| public void setNoSideEffects() |
| { |
| hasNoSideEffects = true; |
| } |
| |
| |
| public boolean hasNoSideEffects() |
| { |
| return hasNoSideEffects; |
| } |
| |
| |
| public void setSideEffects() |
| { |
| hasSideEffects = true; |
| } |
| |
| |
| public boolean hasSideEffects() |
| { |
| return hasSideEffects; |
| } |
| |
| |
| public void setCanNotBeMadePrivate() |
| { |
| canBeMadePrivate = false; |
| } |
| |
| |
| public boolean canBeMadePrivate() |
| { |
| return canBeMadePrivate; |
| } |
| |
| |
| public void setCatchesExceptions() |
| { |
| catchesExceptions = true; |
| } |
| |
| |
| public boolean catchesExceptions() |
| { |
| return catchesExceptions; |
| } |
| |
| |
| public void setBranchesBackward() |
| { |
| branchesBackward = true; |
| } |
| |
| |
| public boolean branchesBackward() |
| { |
| return branchesBackward; |
| } |
| |
| |
| public void setInvokesSuperMethods() |
| { |
| invokesSuperMethods = true; |
| } |
| |
| |
| public boolean invokesSuperMethods() |
| { |
| return invokesSuperMethods; |
| } |
| |
| |
| public void setInvokesDynamically() |
| { |
| invokesDynamically = true; |
| } |
| |
| |
| public boolean invokesDynamically() |
| { |
| return invokesDynamically; |
| } |
| |
| |
| public void setAccessesPrivateCode() |
| { |
| accessesPrivateCode = true; |
| } |
| |
| |
| public boolean accessesPrivateCode() |
| { |
| return accessesPrivateCode; |
| } |
| |
| |
| public void setAccessesPackageCode() |
| { |
| accessesPackageCode = true; |
| } |
| |
| |
| public boolean accessesPackageCode() |
| { |
| return accessesPackageCode; |
| } |
| |
| |
| public void setAccessesProtectedCode() |
| { |
| accessesProtectedCode = true; |
| } |
| |
| |
| public boolean accessesProtectedCode() |
| { |
| return accessesProtectedCode; |
| } |
| |
| |
| public void incrementInvocationCount() |
| { |
| invocationCount++; |
| } |
| |
| |
| public int getInvocationCount() |
| { |
| return invocationCount; |
| } |
| |
| |
| public void setParameterSize(int parameterSize) |
| { |
| this.parameterSize = parameterSize; |
| } |
| |
| |
| public int getParameterSize() |
| { |
| return parameterSize; |
| } |
| |
| |
| public void setParameterUsed(int parameterIndex) |
| { |
| usedParameters |= 1L << parameterIndex; |
| } |
| |
| |
| public void setUsedParameters(long usedParameters) |
| { |
| this.usedParameters = usedParameters; |
| } |
| |
| |
| public boolean isParameterUsed(int parameterIndex) |
| { |
| return parameterIndex >= 64 || (usedParameters & (1L << parameterIndex)) != 0; |
| } |
| |
| |
| public long getUsedParameters() |
| { |
| return usedParameters; |
| } |
| |
| |
| public void generalizeParameter(int parameterIndex, Value parameter) |
| { |
| parameters[parameterIndex] = parameters[parameterIndex] != null ? |
| parameters[parameterIndex].generalize(parameter) : |
| parameter; |
| } |
| |
| |
| public Value getParameter(int parameterIndex) |
| { |
| return parameters != null ? |
| parameters[parameterIndex] : |
| null; |
| } |
| |
| |
| public void generalizeReturnValue(Value returnValue) |
| { |
| this.returnValue = this.returnValue != null ? |
| this.returnValue.generalize(returnValue) : |
| returnValue; |
| } |
| |
| |
| public Value getReturnValue() |
| { |
| return returnValue; |
| } |
| |
| |
| // For setting enum return values. |
| public void setReturnValue(Value returnValue) |
| { |
| this.returnValue = returnValue; |
| } |
| |
| |
| public void merge(MethodOptimizationInfo other) |
| { |
| if (other != null) |
| { |
| this.hasNoSideEffects &= other.hasNoSideEffects; |
| this.hasSideEffects |= other.hasSideEffects; |
| //this.canBeMadePrivate &= other.canBeMadePrivate; |
| this.catchesExceptions |= other.catchesExceptions; |
| this.branchesBackward |= other.branchesBackward; |
| this.invokesSuperMethods |= other.invokesSuperMethods; |
| this.invokesDynamically |= other.invokesDynamically; |
| this.accessesPrivateCode |= other.accessesPrivateCode; |
| this.accessesPackageCode |= other.accessesPackageCode; |
| this.accessesProtectedCode |= other.accessesProtectedCode; |
| } |
| else |
| { |
| this.hasNoSideEffects = false; |
| this.hasSideEffects = true; |
| //this.canBeMadePrivate = false; |
| this.catchesExceptions = true; |
| this.branchesBackward = true; |
| this.invokesSuperMethods = true; |
| this.accessesPrivateCode = true; |
| this.accessesPackageCode = true; |
| this.accessesProtectedCode = true; |
| } |
| } |
| |
| |
| public static void setMethodOptimizationInfo(Clazz clazz, Method method) |
| { |
| MethodLinker.lastMember(method).setVisitorInfo(new MethodOptimizationInfo(clazz, method)); |
| } |
| |
| |
| public static MethodOptimizationInfo getMethodOptimizationInfo(Method method) |
| { |
| Object visitorInfo = MethodLinker.lastMember(method).getVisitorInfo(); |
| |
| return visitorInfo instanceof MethodOptimizationInfo ? |
| (MethodOptimizationInfo)visitorInfo : |
| null; |
| } |
| } |