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
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
|
//===--- TypeLoc.cpp - Type Source Info Wrapper -----------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines the TypeLoc subclasses implementations.
//
//===----------------------------------------------------------------------===//
#include "llvm/Support/raw_ostream.h"
#include "clang/AST/TypeLocVisitor.h"
#include "clang/AST/Expr.h"
#include "llvm/Support/ErrorHandling.h"
using namespace clang;
//===----------------------------------------------------------------------===//
// TypeLoc Implementation
//===----------------------------------------------------------------------===//
namespace {
class TypeLocRanger : public TypeLocVisitor<TypeLocRanger, SourceRange> {
public:
#define ABSTRACT_TYPELOC(CLASS, PARENT)
#define TYPELOC(CLASS, PARENT) \
SourceRange Visit##CLASS##TypeLoc(CLASS##TypeLoc TyLoc) { \
return TyLoc.getLocalSourceRange(); \
}
#include "clang/AST/TypeLocNodes.def"
};
}
SourceRange TypeLoc::getLocalSourceRangeImpl(TypeLoc TL) {
if (TL.isNull()) return SourceRange();
return TypeLocRanger().Visit(TL);
}
namespace {
class TypeSizer : public TypeLocVisitor<TypeSizer, unsigned> {
public:
#define ABSTRACT_TYPELOC(CLASS, PARENT)
#define TYPELOC(CLASS, PARENT) \
unsigned Visit##CLASS##TypeLoc(CLASS##TypeLoc TyLoc) { \
return TyLoc.getFullDataSize(); \
}
#include "clang/AST/TypeLocNodes.def"
};
}
/// \brief Returns the size of the type source info data block.
unsigned TypeLoc::getFullDataSizeForType(QualType Ty) {
if (Ty.isNull()) return 0;
return TypeSizer().Visit(TypeLoc(Ty, 0));
}
namespace {
class NextLoc : public TypeLocVisitor<NextLoc, TypeLoc> {
public:
#define ABSTRACT_TYPELOC(CLASS, PARENT)
#define TYPELOC(CLASS, PARENT) \
TypeLoc Visit##CLASS##TypeLoc(CLASS##TypeLoc TyLoc) { \
return TyLoc.getNextTypeLoc(); \
}
#include "clang/AST/TypeLocNodes.def"
};
}
/// \brief Get the next TypeLoc pointed by this TypeLoc, e.g for "int*" the
/// TypeLoc is a PointerLoc and next TypeLoc is for "int".
TypeLoc TypeLoc::getNextTypeLocImpl(TypeLoc TL) {
return NextLoc().Visit(TL);
}
/// \brief Initializes a type location, and all of its children
/// recursively, as if the entire tree had been written in the
/// given location.
void TypeLoc::initializeImpl(TypeLoc TL, SourceLocation Loc) {
while (true) {
switch (TL.getTypeLocClass()) {
#define ABSTRACT_TYPELOC(CLASS, PARENT)
#define TYPELOC(CLASS, PARENT) \
case CLASS: { \
CLASS##TypeLoc TLCasted = cast<CLASS##TypeLoc>(TL); \
TLCasted.initializeLocal(Loc); \
TL = TLCasted.getNextTypeLoc(); \
if (!TL) return; \
continue; \
}
#include "clang/AST/TypeLocNodes.def"
}
}
}
SourceLocation TypeLoc::getBeginLoc() const {
TypeLoc Cur = *this;
while (true) {
switch (Cur.getTypeLocClass()) {
// FIXME: Currently QualifiedTypeLoc does not have a source range
// case Qualified:
case Elaborated:
break;
default:
TypeLoc Next = Cur.getNextTypeLoc();
if (Next.isNull()) break;
Cur = Next;
continue;
}
break;
}
return Cur.getLocalSourceRange().getBegin();
}
SourceLocation TypeLoc::getEndLoc() const {
TypeLoc Cur = *this;
while (true) {
switch (Cur.getTypeLocClass()) {
default:
break;
case Qualified:
case Elaborated:
Cur = Cur.getNextTypeLoc();
continue;
}
break;
}
return Cur.getLocalSourceRange().getEnd();
}
namespace {
struct TSTChecker : public TypeLocVisitor<TSTChecker, bool> {
// Overload resolution does the real work for us.
static bool isTypeSpec(TypeSpecTypeLoc _) { return true; }
static bool isTypeSpec(TypeLoc _) { return false; }
#define ABSTRACT_TYPELOC(CLASS, PARENT)
#define TYPELOC(CLASS, PARENT) \
bool Visit##CLASS##TypeLoc(CLASS##TypeLoc TyLoc) { \
return isTypeSpec(TyLoc); \
}
#include "clang/AST/TypeLocNodes.def"
};
}
/// \brief Determines if the given type loc corresponds to a
/// TypeSpecTypeLoc. Since there is not actually a TypeSpecType in
/// the type hierarchy, this is made somewhat complicated.
///
/// There are a lot of types that currently use TypeSpecTypeLoc
/// because it's a convenient base class. Ideally we would not accept
/// those here, but ideally we would have better implementations for
/// them.
bool TypeSpecTypeLoc::classof(const TypeLoc *TL) {
if (TL->getType().hasLocalQualifiers()) return false;
return TSTChecker().Visit(*TL);
}
// Reimplemented to account for GNU/C++ extension
// typeof unary-expression
// where there are no parentheses.
SourceRange TypeOfExprTypeLoc::getLocalSourceRange() const {
if (getRParenLoc().isValid())
return SourceRange(getTypeofLoc(), getRParenLoc());
else
return SourceRange(getTypeofLoc(),
getUnderlyingExpr()->getSourceRange().getEnd());
}
TypeSpecifierType BuiltinTypeLoc::getWrittenTypeSpec() const {
if (needsExtraLocalData())
return static_cast<TypeSpecifierType>(getWrittenBuiltinSpecs().Type);
else {
switch (getTypePtr()->getKind()) {
case BuiltinType::Void:
return TST_void;
case BuiltinType::Bool:
return TST_bool;
case BuiltinType::Char_U:
case BuiltinType::Char_S:
return TST_char;
case BuiltinType::Char16:
return TST_char16;
case BuiltinType::Char32:
return TST_char32;
case BuiltinType::WChar:
return TST_wchar;
case BuiltinType::UndeducedAuto:
return TST_auto;
case BuiltinType::UChar:
case BuiltinType::UShort:
case BuiltinType::UInt:
case BuiltinType::ULong:
case BuiltinType::ULongLong:
case BuiltinType::UInt128:
case BuiltinType::SChar:
case BuiltinType::Short:
case BuiltinType::Int:
case BuiltinType::Long:
case BuiltinType::LongLong:
case BuiltinType::Int128:
case BuiltinType::Float:
case BuiltinType::Double:
case BuiltinType::LongDouble:
llvm_unreachable("Builtin type needs extra local data!");
// Fall through, if the impossible happens.
case BuiltinType::NullPtr:
case BuiltinType::Overload:
case BuiltinType::Dependent:
case BuiltinType::ObjCId:
case BuiltinType::ObjCClass:
case BuiltinType::ObjCSel:
return TST_unspecified;
}
}
return TST_unspecified;
}
|
