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/**
* Copyright (C) 2006 Google Inc.
*
* 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.inject.internal.util;
import com.google.common.base.Function;
import com.google.common.collect.MapMaker;
import java.io.IOException;
import java.lang.reflect.Constructor;
import java.lang.reflect.Member;
import java.util.Map;
/**
* Creates stack trace elements for members.
*
* @author crazybob@google.com (Bob Lee)
*/
public class StackTraceElements {
/*if[AOP]*/
static final Map<Class<?>, LineNumbers> lineNumbersCache = new MapMaker().weakKeys().softValues()
.makeComputingMap(new Function<Class<?>, LineNumbers>() {
public LineNumbers apply(Class<?> key) {
try {
return new LineNumbers(key);
}
catch (IOException e) {
throw new RuntimeException(e);
}
}
});
/*end[AOP]*/
public static Object forMember(Member member) {
if (member == null) {
return SourceProvider.UNKNOWN_SOURCE;
}
Class declaringClass = member.getDeclaringClass();
/*if[AOP]*/
LineNumbers lineNumbers = lineNumbersCache.get(declaringClass);
String fileName = lineNumbers.getSource();
Integer lineNumberOrNull = lineNumbers.getLineNumber(member);
int lineNumber = lineNumberOrNull == null ? lineNumbers.getFirstLine() : lineNumberOrNull;
/*end[AOP]*/
/*if[NO_AOP]
String fileName = null;
int lineNumber = -1;
end[NO_AOP]*/
Class<? extends Member> memberType = Classes.memberType(member);
String memberName = memberType == Constructor.class ? "<init>" : member.getName();
return new StackTraceElement(declaringClass.getName(), memberName, fileName, lineNumber);
}
public static Object forType(Class<?> implementation) {
/*if[AOP]*/
LineNumbers lineNumbers = lineNumbersCache.get(implementation);
int lineNumber = lineNumbers.getFirstLine();
String fileName = lineNumbers.getSource();
/*end[AOP]*/
/*if[NO_AOP]
String fileName = null;
int lineNumber = -1;
end[NO_AOP]*/
return new StackTraceElement(implementation.getName(), "class", fileName, lineNumber);
}
}
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