| // Copyright 2015 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.lib.syntax.compiler; |
| |
| import net.bytebuddy.implementation.Implementation.Context; |
| import net.bytebuddy.implementation.bytecode.StackManipulation; |
| |
| import org.objectweb.asm.MethodVisitor; |
| |
| /** |
| * A {@link StackManipulation} that increases a given integer variable of the method by a given |
| * amount. |
| */ |
| public final class IntegerVariableIncrease implements StackManipulation { |
| |
| private final Variable variable; |
| private final int increment; |
| |
| public IntegerVariableIncrease(Variable variable, int increment) { |
| this.variable = variable; |
| this.increment = increment; |
| } |
| |
| @Override |
| public Size apply(MethodVisitor methodVisitor, Context implementationContext) { |
| methodVisitor.visitIincInsn(variable.index, increment); |
| return new Size(0, 0); |
| } |
| |
| @Override |
| public boolean isValid() { |
| return true; |
| } |
| |
| @Override |
| public String toString() { |
| return "IntInc(" + variable.index + ", " + increment + ")"; |
| } |
| } |