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
|
/*
* Copyright 2000-2014 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.psi.impl.source.tree.java;
import com.intellij.lang.ASTNode;
import com.intellij.openapi.diagnostic.Logger;
import com.intellij.psi.codeStyle.CodeStyleManager;
import com.intellij.psi.impl.source.Constants;
import com.intellij.psi.impl.source.tree.ChildRole;
import com.intellij.psi.impl.source.tree.CompositeElement;
import com.intellij.psi.impl.source.tree.JavaSourceUtil;
import com.intellij.psi.impl.source.tree.TreeElement;
import com.intellij.psi.tree.ChildRoleBase;
import com.intellij.psi.tree.IElementType;
import com.intellij.psi.tree.TokenSet;
import com.intellij.util.IncorrectOperationException;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
public class ParameterListElement extends CompositeElement implements Constants {
private static final Logger LOG = Logger.getInstance("#com.intellij.psi.impl.source.tree.java.ParameterListElement");
private static final TokenSet PARAMETER_SET = TokenSet.create(PARAMETER);
public ParameterListElement() {
super(PARAMETER_LIST);
}
@Override
public TreeElement addInternal(TreeElement first, ASTNode last, ASTNode anchor, Boolean before) {
if (anchor == null) {
if (before == null || before.booleanValue()) {
anchor = findChildByRole(ChildRole.RPARENTH);
before = Boolean.TRUE;
}
else {
anchor = findChildByRole(ChildRole.LPARENTH);
before = Boolean.FALSE;
}
}
TreeElement firstAdded = super.addInternal(first, last, anchor, before);
if (first == last && first.getElementType() == PARAMETER) {
JavaSourceUtil.addSeparatingComma(this, first, PARAMETER_SET);
}
//todo[max] hack?
try {
CodeStyleManager.getInstance(getManager().getProject()).reformat(getPsi());
}
catch (IncorrectOperationException e) {
LOG.error(e);
}
return firstAdded;
}
@Override
public void deleteChildInternal(@NotNull ASTNode child) {
final TreeElement oldLastNodeInsideParens = getLastNodeInsideParens();
final TreeElement oldFirstNodeInsideParens = getFirstNodeInsideParens();
if (child.getElementType() == PARAMETER) {
JavaSourceUtil.deleteSeparatingComma(this, child);
}
super.deleteChildInternal(child);
// We may want to fix trailing white space processing here - there is a following possible case:
// *) this parameter list is like (arg1, <white-space-containing-line-breaks>, arg2);
// *) 'arg2' is to be removed;
// We don't want to keep trailing white space then
TreeElement newLastNodeInsideParens = getLastNodeInsideParens();
if (newLastNodeInsideParens != null && newLastNodeInsideParens.getElementType() == WHITE_SPACE) {
if (oldLastNodeInsideParens.getElementType() != WHITE_SPACE) {
deleteChildInternal(newLastNodeInsideParens);
} else {
replaceChild(newLastNodeInsideParens, (ASTNode)oldLastNodeInsideParens.clone());
}
}
final TreeElement newFirstNodeInsideParens = getFirstNodeInsideParens();
if (newFirstNodeInsideParens != null && newFirstNodeInsideParens.getElementType() == WHITE_SPACE) {
if (oldFirstNodeInsideParens == null || oldFirstNodeInsideParens.getElementType() != WHITE_SPACE) {
deleteChildInternal(newFirstNodeInsideParens);
} else {
replaceChild(newFirstNodeInsideParens, (ASTNode)oldFirstNodeInsideParens.clone());
}
}
//todo[max] hack?
try {
CodeStyleManager.getInstance(getManager().getProject()).reformat(getPsi());
}
catch (IncorrectOperationException e) {
LOG.error(e);
}
}
@Override
public ASTNode findChildByRole(int role) {
LOG.assertTrue(ChildRole.isUnique(role));
switch (role) {
default:
return null;
case ChildRole.LPARENTH:
TreeElement firstNode = getFirstChildNode();
return firstNode.getElementType() == LPARENTH ? firstNode : null;
case ChildRole.RPARENTH:
TreeElement lastNode = getLastChildNode();
return lastNode.getElementType() == RPARENTH ? lastNode : null;
}
}
@Override
public int getChildRole(ASTNode child) {
LOG.assertTrue(child.getTreeParent() == this);
IElementType i = child.getElementType();
if (i == PARAMETER) {
return ChildRole.PARAMETER;
}
else if (i == COMMA) {
return ChildRole.COMMA;
}
else if (i == LPARENTH) {
return getChildRole(child, ChildRole.LPARENTH);
}
else if (i == RPARENTH) {
return getChildRole(child, ChildRole.RPARENTH);
}
else {
return ChildRoleBase.NONE;
}
}
/**
* @return last node before closing right paren if possible; <code>null</code> otherwise
*/
@Nullable
private TreeElement getLastNodeInsideParens() {
TreeElement lastNode = getLastChildNode();
return lastNode.getElementType() == RPARENTH ? lastNode.getTreePrev() : null;
}
/**
* @return first node after opening left paren if possible; <code>null</code> otherwise
*/
@Nullable
private TreeElement getFirstNodeInsideParens() {
TreeElement firstNode = getFirstChildNode();
return firstNode.getElementType() == LPARENTH ? firstNode.getTreeNext() : null;
}
}
|
