| // Copyright (c) 2018, the R8 project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| package com.android.tools.r8.cf.code; |
| |
| import com.android.tools.r8.cf.CfPrinter; |
| import com.android.tools.r8.errors.Unreachable; |
| import com.android.tools.r8.graph.DexReference; |
| import com.android.tools.r8.graph.DexType; |
| import com.android.tools.r8.graph.UseRegistry; |
| import com.android.tools.r8.ir.conversion.CfSourceCode; |
| import com.android.tools.r8.ir.conversion.CfState; |
| import com.android.tools.r8.ir.conversion.IRBuilder; |
| import com.android.tools.r8.ir.optimize.ReflectionOptimizer.ClassNameComputationInfo; |
| import com.android.tools.r8.naming.NamingLens; |
| import org.objectweb.asm.MethodVisitor; |
| |
| public class CfDexItemBasedConstString extends CfInstruction { |
| |
| private final DexReference item; |
| private final ClassNameComputationInfo classNameComputationInfo; |
| |
| public CfDexItemBasedConstString( |
| DexReference item, ClassNameComputationInfo classNameComputationInfo) { |
| this.item = item; |
| this.classNameComputationInfo = classNameComputationInfo; |
| } |
| |
| public DexReference getItem() { |
| return item; |
| } |
| |
| public ClassNameComputationInfo getClassNameComputationInfo() { |
| return classNameComputationInfo; |
| } |
| |
| @Override |
| public CfDexItemBasedConstString asDexItemBasedConstString() { |
| return this; |
| } |
| |
| @Override |
| public boolean isDexItemBasedConstString() { |
| return true; |
| } |
| |
| @Override |
| public void write(MethodVisitor visitor, NamingLens lens) { |
| throw new Unreachable( |
| "CfDexItemBasedConstString instructions should always be rewritten into CfConstString"); |
| } |
| |
| @Override |
| public void print(CfPrinter printer) { |
| printer.print(this); |
| } |
| |
| @Override |
| public boolean canThrow() { |
| // const-string* may throw in dex. (Not in CF, see CfSourceCode.canThrowHelper) |
| return true; |
| } |
| |
| @Override |
| public void registerUse(UseRegistry registry, DexType clazz) { |
| if (item.isDexType() && classNameComputationInfo.needsToRegisterTypeReference()) { |
| registry.registerTypeReference(item.asDexType()); |
| } |
| } |
| |
| @Override |
| public void buildIR(IRBuilder builder, CfState state, CfSourceCode code) { |
| builder.addDexItemBasedConstString( |
| state.push(builder.appView.dexItemFactory().stringType).register, item); |
| } |
| } |