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/*
* Copyright (C) 2008 The Android Open Source Project
*
* 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.android.apicheck;
import java.util.*;
public class MethodInfo implements AbstractMethodInfo {
private String mName;
private String mReturn;
private boolean mIsAbstract;
private boolean mIsNative;
private boolean mIsSynchronized;
private boolean mIsStatic;
private boolean mIsFinal;
private String mDeprecated;
private String mScope;
private boolean mExistsInBoth;
private List<ParameterInfo> mParameters;
private List<String> mExceptions;
private SourcePositionInfo mSourcePosition;
private ClassInfo mClass;
public MethodInfo (String name, String returnType, boolean isAbstract, boolean isNative,
boolean isSynchronized, boolean isStatic, boolean isFinal, String deprecated
, String scope, SourcePositionInfo source, ClassInfo parent) {
mName = name;
mReturn = returnType;
mIsAbstract = isAbstract;
mIsNative = isNative;
mIsSynchronized = isSynchronized;
mIsStatic = isStatic;
mIsFinal = isFinal;
mDeprecated = deprecated;
mScope = scope;
mParameters = new ArrayList<ParameterInfo>();
mExceptions = new ArrayList<String>();
mExistsInBoth = false;
mSourcePosition = source;
mClass = parent;
}
public String name() {
return mName;
}
public String qualifiedName() {
String parentQName = (mClass != null)
? (mClass.qualifiedName() + ".")
: "";
return parentQName + name();
}
public String prettySignature() {
String params = "";
for (ParameterInfo pInfo : mParameters) {
if (params.length() > 0) {
params += ", ";
}
params += pInfo.getType();
}
return qualifiedName() + '(' + params + ')';
}
public SourcePositionInfo position() {
return mSourcePosition;
}
public ClassInfo containingClass() {
return mClass;
}
public boolean matches(MethodInfo other) {
return getSignature().equals(other.getSignature());
}
public boolean isConsistent(MethodInfo mInfo) {
mInfo.mExistsInBoth = true;
mExistsInBoth = true;
boolean consistent = true;
if (!mReturn.equals(mInfo.mReturn)) {
consistent = false;
Errors.error(Errors.CHANGED_TYPE, mInfo.position(),
"Method " + mInfo.qualifiedName() + " has changed return type from "
+ mReturn + " to " + mInfo.mReturn);
}
if (mIsAbstract != mInfo.mIsAbstract) {
consistent = false;
Errors.error(Errors.CHANGED_ABSTRACT, mInfo.position(),
"Method " + mInfo.qualifiedName() + " has changed 'abstract' qualifier");
}
if (mIsNative != mInfo.mIsNative) {
consistent = false;
Errors.error(Errors.CHANGED_NATIVE, mInfo.position(),
"Method " + mInfo.qualifiedName() + " has changed 'native' qualifier");
}
if (mIsFinal != mInfo.mIsFinal) {
// Compiler-generated methods vary in their 'final' qual between versions of
// the compiler, so this check needs to be quite narrow. A change in 'final'
// status of a method is only relevant if (a) the method is not declared 'static'
// and (b) the method's class is not itself 'final'.
if (!mIsStatic) {
if ((mClass == null) || (!mClass.isFinal())) {
consistent = false;
Errors.error(Errors.CHANGED_FINAL, mInfo.position(),
"Method " + mInfo.qualifiedName() + " has changed 'final' qualifier");
}
}
}
if (mIsStatic != mInfo.mIsStatic) {
consistent = false;
Errors.error(Errors.CHANGED_STATIC, mInfo.position(),
"Method " + mInfo.qualifiedName() + " has changed 'static' qualifier");
}
if (!mScope.equals(mInfo.mScope)) {
consistent = false;
Errors.error(Errors.CHANGED_SCOPE, mInfo.position(),
"Method " + mInfo.qualifiedName() + " changed scope from "
+ mScope + " to " + mInfo.mScope);
}
if (!mDeprecated.equals(mInfo.mDeprecated)) {
Errors.error(Errors.CHANGED_DEPRECATED, mInfo.position(),
"Method " + mInfo.qualifiedName() + " has changed deprecation state");
consistent = false;
}
if (mIsSynchronized != mInfo.mIsSynchronized) {
Errors.error(Errors.CHANGED_SYNCHRONIZED, mInfo.position(),
"Method " + mInfo.qualifiedName() + " has changed 'synchronized' qualifier from " + mIsSynchronized + " to " + mInfo.mIsSynchronized);
consistent = false;
}
for (String exec : mExceptions) {
if (!mInfo.mExceptions.contains(exec)) {
// exclude 'throws' changes to finalize() overrides with no arguments
if (!name().equals("finalize") || (mParameters.size() > 0)) {
Errors.error(Errors.CHANGED_THROWS, mInfo.position(),
"Method " + mInfo.qualifiedName() + " no longer throws exception "
+ exec);
consistent = false;
}
}
}
for (String exec : mInfo.mExceptions) {
// exclude 'throws' changes to finalize() overrides with no arguments
if (!mExceptions.contains(exec)) {
if (!name().equals("finalize") || (mParameters.size() > 0)) {
Errors.error(Errors.CHANGED_THROWS, mInfo.position(),
"Method " + mInfo.qualifiedName() + " added thrown exception "
+ exec);
consistent = false;
}
}
}
return consistent;
}
public void addParameter(ParameterInfo pInfo) {
mParameters.add(pInfo);
}
public void addException(String exc) {
mExceptions.add(exc);
}
public String getParameterHash() {
String hash = "";
for (ParameterInfo pInfo : mParameters) {
hash += ":" + pInfo.getType();
}
return hash;
}
public String getHashableName() {
return qualifiedName() + getParameterHash();
}
public String getSignature() {
return name() + getParameterHash();
}
public boolean isInBoth() {
return mExistsInBoth;
}
}
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