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
|
/*******************************************************************************
* Copyright (c) 2006, 2009 QNX Software Systems and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Doug Schaefer (QNX) - Initial API and implementation
* Markus Schorn (Wind River Systems)
* IBM Corporation
*******************************************************************************/
package org.eclipse.cdt.internal.core.pdom.dom.c;
import org.eclipse.cdt.core.CCorePlugin;
import org.eclipse.cdt.core.dom.ast.DOMException;
import org.eclipse.cdt.core.dom.ast.IBinding;
import org.eclipse.cdt.core.dom.ast.IFunctionType;
import org.eclipse.cdt.core.dom.ast.IType;
import org.eclipse.cdt.core.dom.ast.ITypedef;
import org.eclipse.cdt.core.parser.util.CharArrayUtils;
import org.eclipse.cdt.internal.core.Util;
import org.eclipse.cdt.internal.core.dom.parser.ITypeContainer;
import org.eclipse.cdt.internal.core.index.IIndexCBindingConstants;
import org.eclipse.cdt.internal.core.index.IIndexType;
import org.eclipse.cdt.internal.core.pdom.dom.PDOMBinding;
import org.eclipse.cdt.internal.core.pdom.dom.PDOMLinkage;
import org.eclipse.cdt.internal.core.pdom.dom.PDOMNode;
import org.eclipse.core.runtime.CoreException;
/**
* Typedefs for c
*/
class PDOMCTypedef extends PDOMBinding implements ITypedef, ITypeContainer, IIndexType {
private static final int TYPE = PDOMBinding.RECORD_SIZE + 0;
@SuppressWarnings("hiding")
protected static final int RECORD_SIZE = PDOMBinding.RECORD_SIZE + 4;
public PDOMCTypedef(PDOMLinkage linkage, PDOMNode parent, ITypedef typedef)
throws CoreException {
super(linkage, parent, typedef.getNameCharArray());
try {
IType type = typedef.getType();
setType(parent.getLinkage(), type);
} catch (DOMException e) {
throw new CoreException(Util.createStatus(e));
}
}
public PDOMCTypedef(PDOMLinkage linkage, int record) {
super(linkage, record);
}
@Override
public void update(final PDOMLinkage linkage, IBinding newBinding) throws CoreException {
if (newBinding instanceof ITypedef) {
ITypedef td= (ITypedef) newBinding;
IType mytype= getType();
try {
IType newType= td.getType();
setType(linkage, newType);
if (mytype != null) {
linkage.deleteType(mytype, record);
}
} catch (DOMException e) {
throw new CoreException(Util.createStatus(e));
}
}
}
private void setType(final PDOMLinkage linkage, IType newType) throws CoreException, DOMException {
PDOMNode typeNode = linkage.addType(this, newType);
if (introducesRecursion((IType) typeNode, getNameCharArray())) {
linkage.deleteType((IType) typeNode, record);
typeNode= null;
}
getDB().putInt(record + TYPE, typeNode != null ? typeNode.getRecord() : 0);
}
private boolean introducesRecursion(IType type, char[] tdname) throws DOMException {
int maxDepth= 50;
while (--maxDepth > 0) {
if (type instanceof ITypedef && CharArrayUtils.equals(((ITypedef) type).getNameCharArray(), tdname)) {
return true;
}
if (type instanceof ITypeContainer) {
type= ((ITypeContainer) type).getType();
}
else if (type instanceof IFunctionType) {
IFunctionType ft= (IFunctionType) type;
if (introducesRecursion(ft.getReturnType(), tdname)) {
return true;
}
IType[] params= ft.getParameterTypes();
for (int i = 0; i < params.length; i++) {
IType param = params[i];
if (introducesRecursion(param, tdname)) {
return true;
}
}
return false;
}
else {
return false;
}
}
return true;
}
@Override
protected int getRecordSize() {
return RECORD_SIZE;
}
@Override
public int getNodeType() {
return IIndexCBindingConstants.CTYPEDEF;
}
public IType getType() {
try {
int typeRec = getDB().getInt(record + TYPE);
return (IType)getLinkage().getNode(typeRec);
} catch (CoreException e) {
CCorePlugin.log(e);
return null;
}
}
public boolean isSameType(IType type) {
try {
IType myrtype = getType();
if (myrtype == null)
return false;
if (type instanceof ITypedef) {
type= ((ITypedef)type).getType();
}
return myrtype.isSameType(type);
} catch (DOMException e) {
}
return false;
}
@Override
protected String toStringBase() {
return getName() + ": " + super.toStringBase(); //$NON-NLS-1$
}
public void setType(IType type) {fail();}
@Override
public Object clone() {fail(); return null;}
}
|
