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/*
* Copyright 2000-2012 JetBrains s.r.o.
*
* 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.intellij.codeInsight.daemon.impl.quickfix;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.util.text.StringUtil;
import com.intellij.psi.*;
import com.intellij.psi.codeStyle.JavaCodeStyleManager;
import com.intellij.psi.util.TypeConversionUtil;
import com.intellij.refactoring.changeSignature.ParameterInfoImpl;
import com.intellij.refactoring.util.RefactoringUtil;
import org.jetbrains.annotations.NotNull;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
/**
* User: anna
* Date: 2/9/12
*/
public class ChangeMethodSignatureFromUsageReverseOrderFix extends ChangeMethodSignatureFromUsageFix {
public ChangeMethodSignatureFromUsageReverseOrderFix(@NotNull PsiMethod targetMethod,
@NotNull PsiExpression[] expressions,
@NotNull PsiSubstitutor substitutor,
@NotNull PsiElement context,
boolean changeAllUsages,
int minUsagesNumberToShowDialog) {
super(targetMethod, expressions, substitutor, context, changeAllUsages, minUsagesNumberToShowDialog);
}
@Override
public boolean isAvailable(@NotNull Project project, Editor editor, PsiFile file) {
if (myTargetMethod.isValid() && myExpressions.length > myTargetMethod.getParameterList().getParametersCount()) {
if (super.isAvailable(project, editor, file)) {
final ArrayList<ParameterInfoImpl> result = new ArrayList<ParameterInfoImpl>();
if (super.findNewParamsPlace(myExpressions, myTargetMethod, mySubstitutor,
new StringBuilder(), new HashSet<ParameterInfoImpl>(), myTargetMethod.getParameterList().getParameters(), result)) {
if (myNewParametersInfo.length != result.size()) return true;
for (int i = 0, size = result.size(); i < size; i++) {
ParameterInfoImpl info = result.get(i);
if (!myNewParametersInfo[i].equals(info)) return true;
}
}
}
}
return false;
}
@Override
protected boolean findNewParamsPlace(PsiExpression[] expressions,
PsiMethod targetMethod,
PsiSubstitutor substitutor,
StringBuilder buf,
HashSet<ParameterInfoImpl> newParams,
PsiParameter[] parameters,
List<ParameterInfoImpl> result) {
// find which parameters to introduce and where
Set<String> existingNames = new HashSet<String>();
for (PsiParameter parameter : parameters) {
existingNames.add(parameter.getName());
}
int ei = expressions.length - 1;
int pi = parameters.length - 1;
final PsiParameter varargParam = targetMethod.isVarArgs() ? parameters[parameters.length - 1] : null;
final List<String> params = new ArrayList<String>();
while (ei >= 0 || pi >= 0) {
PsiExpression expression = ei >=0 ? expressions[ei] : null;
PsiParameter parameter = pi >= 0 ? parameters[pi] : null;
PsiType paramType = parameter == null ? null : substitutor.substitute(parameter.getType());
boolean parameterAssignable = paramType != null && (expression == null || TypeConversionUtil
.areTypesAssignmentCompatible(paramType, expression));
if (parameterAssignable) {
final PsiType type = parameter.getType();
result.add(0, new ParameterInfoImpl(pi, parameter.getName(), type));
params.add(0, escapePresentableType(type));
pi--;
ei--;
}
else if (isArgumentInVarargPosition(expressions, ei, varargParam, substitutor)) {
if (pi == parameters.length - 1) {
assert varargParam != null;
final PsiType type = varargParam.getType();
result.add(0, new ParameterInfoImpl(pi, varargParam.getName(), type));
params.add(0, escapePresentableType(type));
}
pi--;
ei--;
}
else if (expression != null) {
if (varargParam != null && pi >= parameters.length) return false;
PsiType exprType = RefactoringUtil.getTypeByExpression(expression);
if (exprType == null) return false;
JavaCodeStyleManager codeStyleManager = JavaCodeStyleManager.getInstance(expression.getProject());
String name = suggestUniqueParameterName(codeStyleManager, expression, exprType, existingNames);
final ParameterInfoImpl newParameterInfo = new ParameterInfoImpl(-1, name, exprType, expression.getText().replace('\n', ' '));
result.add(0, newParameterInfo);
newParams.add(newParameterInfo);
params.add(0, "<b>" + escapePresentableType(exprType) + "</b>");
ei--;
}
}
if (result.size() != expressions.length && varargParam == null) return false;
buf.append(StringUtil.join(params, ", "));
return true;
}
}
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