| /* |
| * Copyright 2019 The Bazel Authors. All rights reserved. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.google.devtools.build.android.desugar.langmodel; |
| |
| import static com.google.common.base.Preconditions.checkState; |
| |
| import com.google.auto.value.AutoValue; |
| import org.objectweb.asm.Type; |
| |
| /** The key to index a class or interface field. */ |
| @AutoValue |
| public abstract class FieldKey extends ClassMemberKey<FieldKey> { |
| |
| /** The factory method for {@link FieldKey}. */ |
| public static FieldKey create(ClassName owner, String name, String descriptor) { |
| checkState( |
| !descriptor.startsWith("("), |
| "Expected a type descriptor for field instead of a method descriptor. Actual: (%s#%s:%s)", |
| owner, |
| name, |
| descriptor); |
| return new AutoValue_FieldKey(owner, name, descriptor); |
| } |
| |
| @Override |
| public FieldKey acceptTypeMapper(TypeMapper typeMapper) { |
| return FieldKey.create(typeMapper.map(owner()), name(), typeMapper.mapDesc(descriptor())); |
| } |
| |
| /** |
| * Accepts {@link FieldInstrVisitor} to perform distinct operations based on different invocation |
| * codes. |
| */ |
| public final <R, P> R accept( |
| MemberUseKind fieldUseKind, FieldInstrVisitor<R, ? super FieldKey, P> visitor, P param) { |
| switch (fieldUseKind) { |
| case GETSTATIC: |
| return visitor.visitGetStatic(this, param); |
| case PUTSTATIC: |
| return visitor.visitPutStatic(this, param); |
| case GETFIELD: |
| return visitor.visitGetField(this, param); |
| case PUTFIELD: |
| return visitor.visitPutField(this, param); |
| default: |
| throw new AssertionError( |
| String.format( |
| "Unexpected opcode(%s): Expect one of {GETSTATIC, PUTSTATIC, GETFIELD, PUTFIELD}" |
| + " for field instructions.", |
| fieldUseKind)); |
| } |
| } |
| |
| /** |
| * Returns the bridge method for reading a static field, identified by (getstatic) instruction. |
| */ |
| public final MethodKey bridgeOfStaticRead() { |
| return MethodKey.create( |
| owner(), nameWithSuffix("bridge_getter"), Type.getMethodDescriptor(getFieldType())); |
| } |
| |
| /** |
| * Returns the bridge method for reading an instance field, identified by (getfield) instruction. |
| */ |
| public final MethodKey bridgeOfInstanceRead() { |
| return MethodKey.create( |
| owner(), |
| nameWithSuffix("bridge_getter"), |
| Type.getMethodDescriptor(getFieldType(), Type.getObjectType(ownerName()))); |
| } |
| |
| /** |
| * Returns the bridge method for writing a static field, identified by (putstatic) instruction. |
| */ |
| public final MethodKey bridgeOfStaticWrite() { |
| return MethodKey.create( |
| owner(), |
| nameWithSuffix("bridge_setter"), |
| Type.getMethodDescriptor(getFieldType(), getFieldType())); |
| } |
| |
| /** |
| * Returns the bridge method for writing an instance field, identified by (putfield) instruction. |
| */ |
| public final MethodKey bridgeOfInstanceWrite() { |
| return MethodKey.create( |
| owner(), |
| nameWithSuffix("bridge_setter"), |
| Type.getMethodDescriptor(getFieldType(), Type.getObjectType(ownerName()), getFieldType())); |
| } |
| |
| public Type getFieldType() { |
| return Type.getType(descriptor()); |
| } |
| } |