/*
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 org.apache.flex.compiler.problems;
import org.apache.flex.abc.graph.IBasicBlock;
import org.apache.flex.abc.graph.IFlowgraph;
import org.apache.flex.abc.semantics.Block;
import org.apache.flex.compiler.common.ISourceLocation;
import org.apache.flex.compiler.common.SourceLocation;
import org.apache.flex.compiler.problems.annotations.DefaultSeverity;
/**
* Base class for internal compiler problems that are created
* when AET determined the code generator produced obviously
* invalid byte code.
*/
@DefaultSeverity(CompilerProblemSeverity.ERROR)
public abstract class InvalidByteCodeGeneratedProblem extends CompilerProblem
{
protected InvalidByteCodeGeneratedProblem(ISourceLocation location)
{
super(location);
}
/**
* Helper method that will use debug op code information to deduce a source
* location from an instruction offset in a {@link Block} in a
* {@link IFlowgraph}.
*
* @param cfg {@link IFlowgraph} containing the specified
* {@link Block}.
* @param b {@link Block} containing the instruction to deduce a
* {@link ISourceLocation} for.
* @param instructionIndex Offset in the specified {@link Block} of the
* instruction to deduce a {@link ISourceLocation} for.
* @return The deduced {@link ISourceLocation}.
*/
public static ISourceLocation computeSourceLocationForBlockAndInstruction(IFlowgraph cfg, IBasicBlock b, int instructionIndex)
{
String currentFileName = cfg.findSourcePath(b, instructionIndex);
int currentLine = cfg.findLineNumber(b, instructionIndex);
if ( currentFileName != null && currentLine != -1 )
return new SourceLocation(currentFileName, ISourceLocation.UNKNOWN, ISourceLocation.UNKNOWN, currentLine, ISourceLocation.UNKNOWN);
else
return new SourceLocation();
}
}