1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
|
/*
* 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.
*/
/**
* Created by IntelliJ IDEA.
* User: cdr
* Date: Nov 13, 2002
* Time: 3:26:50 PM
* To change this template use Options | File Templates.
*/
package com.intellij.codeInsight.daemon.impl.quickfix;
import com.intellij.codeInsight.FileModificationService;
import com.intellij.codeInsight.daemon.impl.HighlightInfo;
import com.intellij.codeInsight.intention.HighPriorityAction;
import com.intellij.codeInsight.intention.IntentionAction;
import com.intellij.openapi.diagnostic.Logger;
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.impl.source.resolve.DefaultParameterTypeInferencePolicy;
import com.intellij.psi.util.PsiTreeUtil;
import com.intellij.psi.util.TypeConversionUtil;
import com.intellij.util.Function;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
public class ChangeTypeArgumentsFix implements IntentionAction, HighPriorityAction {
private final PsiMethod myTargetMethod;
private final PsiClass myPsiClass;
private final PsiExpression[] myExpressions;
private static final Logger LOG = Logger.getInstance("#" + ChangeTypeArgumentsFix.class.getName());
private final PsiNewExpression myNewExpression;
ChangeTypeArgumentsFix(@NotNull PsiMethod targetMethod,
PsiClass psiClass,
@NotNull PsiExpression[] expressions,
@NotNull PsiElement context) {
myTargetMethod = targetMethod;
myPsiClass = psiClass;
myExpressions = expressions;
myNewExpression = PsiTreeUtil.getParentOfType(context, PsiNewExpression.class);
}
@Override
@NotNull
public String getText() {
final PsiSubstitutor substitutor = inferTypeArguments();
return "Change type arguments to <" + StringUtil.join(myPsiClass.getTypeParameters(), new Function<PsiTypeParameter, String>() {
@Override
public String fun(PsiTypeParameter typeParameter) {
final PsiType substituted = substitutor.substitute(typeParameter);
return substituted != null ? substituted.getPresentableText() : CommonClassNames.JAVA_LANG_OBJECT;
}
}, ", ") + ">";
}
@Override
@NotNull
public String getFamilyName() {
return "Change type arguments";
}
@Override
public boolean isAvailable(@NotNull Project project, Editor editor, PsiFile file) {
final PsiTypeParameter[] typeParameters = myPsiClass.getTypeParameters();
if (typeParameters.length > 0) {
if (myNewExpression != null && myNewExpression.isValid() && myNewExpression.getArgumentList() != null) {
final PsiJavaCodeReferenceElement reference = myNewExpression.getClassOrAnonymousClassReference();
if (reference != null) {
final PsiReferenceParameterList parameterList = reference.getParameterList();
if (parameterList != null) {
final PsiSubstitutor substitutor = inferTypeArguments();
final PsiParameter[] parameters = myTargetMethod.getParameterList().getParameters();
if (parameters.length != myExpressions.length) return false;
for (int i = 0, length = parameters.length; i < length; i++) {
PsiParameter parameter = parameters[i];
final PsiType expectedType = substitutor.substitute(parameter.getType());
if (!myExpressions[i].isValid()) return false;
final PsiType actualType = myExpressions[i].getType();
if (expectedType == null || actualType == null || !TypeConversionUtil.isAssignable(expectedType, actualType)) return false;
}
for (PsiTypeParameter parameter : typeParameters) {
if (substitutor.substitute(parameter) == null) return false;
}
return true;
}
}
}
}
return false;
}
@Override
public void invoke(@NotNull final Project project, Editor editor, final PsiFile file) {
if (!FileModificationService.getInstance().prepareFileForWrite(file)) return;
final PsiTypeParameter[] typeParameters = myPsiClass.getTypeParameters();
final PsiSubstitutor psiSubstitutor = inferTypeArguments();
final PsiJavaCodeReferenceElement reference = myNewExpression.getClassOrAnonymousClassReference();
LOG.assertTrue(reference != null, myNewExpression);
final PsiReferenceParameterList parameterList = reference.getParameterList();
LOG.assertTrue(parameterList != null, myNewExpression);
PsiTypeElement[] elements = parameterList.getTypeParameterElements();
for (int i = elements.length - 1; i >= 0; i--) {
PsiTypeElement typeElement = elements[i];
final PsiType typeArg = psiSubstitutor.substitute(typeParameters[i]);
typeElement.replace(JavaPsiFacade.getElementFactory(project).createTypeElement(typeArg));
}
}
private PsiSubstitutor inferTypeArguments() {
final JavaPsiFacade facade = JavaPsiFacade.getInstance(myNewExpression.getProject());
final PsiResolveHelper resolveHelper = facade.getResolveHelper();
final PsiParameter[] parameters = myTargetMethod.getParameterList().getParameters();
final PsiExpressionList argumentList = myNewExpression.getArgumentList();
LOG.assertTrue(argumentList != null);
final PsiExpression[] expressions = argumentList.getExpressions();
return resolveHelper.inferTypeArguments(myPsiClass.getTypeParameters(), parameters, expressions,
PsiSubstitutor.EMPTY,
myNewExpression.getParent(),
DefaultParameterTypeInferencePolicy.INSTANCE);
}
public static void registerIntentions(@NotNull JavaResolveResult[] candidates,
@NotNull PsiExpressionList list,
@Nullable HighlightInfo highlightInfo,
PsiClass psiClass) {
if (candidates.length == 0) return;
PsiExpression[] expressions = list.getExpressions();
for (JavaResolveResult candidate : candidates) {
registerIntention(expressions, highlightInfo, psiClass, candidate, list);
}
}
private static void registerIntention(@NotNull PsiExpression[] expressions,
@Nullable HighlightInfo highlightInfo,
PsiClass psiClass,
@NotNull JavaResolveResult candidate,
@NotNull PsiElement context) {
if (!candidate.isStaticsScopeCorrect()) return;
PsiMethod method = (PsiMethod)candidate.getElement();
if (method != null && context.getManager().isInProject(method)) {
final ChangeTypeArgumentsFix fix = new ChangeTypeArgumentsFix(method, psiClass, expressions, context);
QuickFixAction.registerQuickFixAction(highlightInfo, null, fix);
}
}
@Override
public boolean startInWriteAction() {
return true;
}
}
|
