| // 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.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.code.Position; |
| 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 CfPosition extends CfInstruction { |
| |
| private final CfLabel label; |
| private final Position position; |
| |
| |
| |
| public CfPosition(CfLabel label, Position position) { |
| this.label = label; |
| this.position = position; |
| } |
| |
| @Override |
| public int getCompareToId() { |
| return CfCompareHelper.POSITION_COMPARE_ID; |
| } |
| |
| @Override |
| public int internalAcceptCompareTo( |
| CfInstruction other, CompareToVisitor visitor, CfCompareHelper helper) { |
| return visitor.visit( |
| this, |
| (CfPosition) other, |
| spec -> |
| spec.withInt(p -> p.position.line) |
| .withCustomItem(p -> p.label, helper.labelAcceptor())); |
| } |
| |
| @Override |
| public void write( |
| AppView<?> appView, |
| ProgramMethod context, |
| DexItemFactory dexItemFactory, |
| GraphLens graphLens, |
| InitClassLens initClassLens, |
| NamingLens namingLens, |
| LensCodeRewriterUtils rewriter, |
| MethodVisitor visitor) { |
| visitor.visitLineNumber(position.line, label.getLabel()); |
| } |
| |
| @Override |
| public void print(CfPrinter printer) { |
| printer.print(this); |
| } |
| |
| public Position getPosition() { |
| return position; |
| } |
| |
| public CfLabel getLabel() { |
| return label; |
| } |
| |
| @Override |
| public boolean emitsIR() { |
| return false; |
| } |
| |
| @Override |
| public boolean isPosition() { |
| return true; |
| } |
| |
| @Override |
| public CfPosition asPosition() { |
| return this; |
| } |
| |
| @Override |
| public void buildIR(IRBuilder builder, CfState state, CfSourceCode code) { |
| Position canonical = code.getCanonicalPosition(position); |
| state.setPosition(canonical); |
| builder.addDebugPosition(canonical); |
| } |
| |
| @Override |
| public ConstraintWithTarget inliningConstraint( |
| InliningConstraints inliningConstraints, CfCode code, ProgramMethod context) { |
| return ConstraintWithTarget.ALWAYS; |
| } |
| |
| @Override |
| public void evaluate( |
| CfFrameVerificationHelper frameBuilder, |
| DexType context, |
| DexType returnType, |
| DexItemFactory factory, |
| InitClassLens initClassLens) { |
| // This is a no-op. |
| } |
| } |