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
|
/*
* 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.completion;
import com.intellij.psi.*;
import com.intellij.psi.filters.FilterPositionUtil;
import com.intellij.psi.impl.source.jsp.jspJava.JspClassLevelDeclarationStatement;
import com.intellij.psi.javadoc.PsiDocComment;
import com.intellij.psi.util.PsiTreeUtil;
import com.intellij.util.ArrayUtil;
import com.intellij.util.containers.ContainerUtil;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.util.ArrayList;
import java.util.List;
/**
* @author ik
* @since 17.02.2003
*/
public class ModifierChooser {
private static final String[][] CLASS_MODIFIERS = {
{PsiKeyword.PUBLIC},
{PsiKeyword.FINAL, PsiKeyword.ABSTRACT}
};
private static final String[][] CLASS_MEMBER_MODIFIERS = {
{PsiKeyword.PUBLIC, PsiKeyword.PROTECTED, PsiKeyword.PRIVATE},
{PsiKeyword.STATIC},
{PsiKeyword.FINAL, PsiKeyword.ABSTRACT},
{PsiKeyword.NATIVE},
{PsiKeyword.SYNCHRONIZED},
{PsiKeyword.STRICTFP},
{PsiKeyword.VOLATILE},
{PsiKeyword.TRANSIENT}
};
private static final String[][] INTERFACE_MEMBER_MODIFIERS = {
{PsiKeyword.PUBLIC, PsiKeyword.PROTECTED},
{PsiKeyword.STATIC},
{PsiKeyword.FINAL, PsiKeyword.ABSTRACT}
};
static String[] getKeywords(@NotNull PsiElement position) {
final PsiModifierList list = findModifierList(position);
if (list == null && !shouldSuggestModifiers(position)) {
return ArrayUtil.EMPTY_STRING_ARRAY;
}
PsiElement scope = position.getParent();
while (scope != null) {
if (scope instanceof PsiJavaFile) {
return addClassModifiers(list);
}
if (scope instanceof PsiClass) {
return addMemberModifiers(list, ((PsiClass)scope).isInterface());
}
scope = scope.getParent();
if (scope instanceof PsiDirectory) break;
}
return ArrayUtil.EMPTY_STRING_ARRAY;
}
public static String[] addClassModifiers(PsiModifierList list) {
return addKeywords(list, CLASS_MODIFIERS);
}
public static String[] addMemberModifiers(PsiModifierList list, final boolean inInterface) {
return addKeywords(list, inInterface ? INTERFACE_MEMBER_MODIFIERS : CLASS_MEMBER_MODIFIERS);
}
private static String[] addKeywords(PsiModifierList list, String[][] keywordSets) {
final List<String> ret = new ArrayList<String>();
for (int i = 0; i < keywordSets.length; i++) {
final String[] keywords = keywordSets[keywordSets.length - i - 1];
boolean containModifierFlag = false;
if (list != null) {
for (@PsiModifier.ModifierConstant String keyword : keywords) {
if (list.hasExplicitModifier(keyword)) {
containModifierFlag = true;
break;
}
}
}
if (!containModifierFlag) {
ContainerUtil.addAll(ret, keywords);
}
}
return ArrayUtil.toStringArray(ret);
}
@Nullable
public static PsiModifierList findModifierList(@NotNull PsiElement element) {
if(element.getParent() instanceof PsiModifierList) {
return (PsiModifierList)element.getParent();
}
return PsiTreeUtil.getParentOfType(FilterPositionUtil.searchNonSpaceNonCommentBack(element), PsiModifierList.class);
}
private static boolean shouldSuggestModifiers(PsiElement element) {
PsiElement parent = element.getParent();
while (parent != null && (parent instanceof PsiJavaCodeReferenceElement ||
parent instanceof PsiErrorElement || parent instanceof PsiTypeElement ||
parent instanceof PsiMethod || parent instanceof PsiVariable ||
parent instanceof PsiDeclarationStatement || parent instanceof PsiImportList ||
parent instanceof PsiDocComment ||
element.getText().equals(parent.getText()))) {
parent = parent.getParent();
if (parent instanceof JspClassLevelDeclarationStatement) {
parent = parent.getContext();
}
}
if (parent == null) return false;
PsiElement prev = FilterPositionUtil.searchNonSpaceNonCommentBack(element);
if (parent instanceof PsiJavaFile || parent instanceof PsiClass) {
if (prev == null || JavaCompletionData.END_OF_BLOCK.isAcceptable(element, prev.getParent())) {
return true;
}
}
return false;
}
}
|
