blob: 9a079e71cfdcdd583eff004bd112938ea1aec7ea [file] [log] [blame]
// Copyright (c) 2017, 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.graph.AppView;
import com.android.tools.r8.graph.CfCode;
import com.android.tools.r8.graph.CfCompareHelper;
import com.android.tools.r8.graph.DexItemFactory;
import com.android.tools.r8.graph.DexString;
import com.android.tools.r8.graph.DexType;
import com.android.tools.r8.graph.GraphLens;
import com.android.tools.r8.graph.InitClassLens;
import com.android.tools.r8.graph.ProgramMethod;
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.conversion.LensCodeRewriterUtils;
import com.android.tools.r8.ir.optimize.Inliner.ConstraintWithTarget;
import com.android.tools.r8.ir.optimize.InliningConstraints;
import com.android.tools.r8.naming.NamingLens;
import com.android.tools.r8.utils.structural.CompareToVisitor;
import org.objectweb.asm.MethodVisitor;
public class CfConstString extends CfInstruction {
private DexString string;
public CfConstString(DexString string) {
this.string = string;
}
@Override
public int getCompareToId() {
return CfCompareHelper.CONST_STRING_COMPARE_ID;
}
@Override
public int internalAcceptCompareTo(
CfInstruction other, CompareToVisitor visitor, CfCompareHelper helper) {
return string.acceptCompareTo(other.asConstString().string, visitor);
}
public DexString getString() {
return string;
}
public void setString(DexString string) {
this.string = string;
}
@Override
public CfConstString asConstString() {
return this;
}
@Override
public boolean isConstString() {
return true;
}
@Override
public void write(
AppView<?> appView,
ProgramMethod context,
DexItemFactory dexItemFactory,
GraphLens graphLens,
InitClassLens initClassLens,
NamingLens namingLens,
LensCodeRewriterUtils rewriter,
MethodVisitor visitor) {
visitor.visitLdcInsn(string.toString());
}
@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 buildIR(IRBuilder builder, CfState state, CfSourceCode code) {
builder.addConstString(
state.push(builder.appView.dexItemFactory().stringType).register, string);
}
@Override
public ConstraintWithTarget inliningConstraint(
InliningConstraints inliningConstraints, CfCode code, ProgramMethod context) {
return inliningConstraints.forConstInstruction();
}
@Override
public void evaluate(
CfFrameVerificationHelper frameBuilder,
DexType context,
DexType returnType,
DexItemFactory factory,
InitClassLens initClassLens) {
// ... →
// ..., value
frameBuilder.push(factory.stringType);
}
}