blob: 6e85375ed22f91814b90f5798ebd7574bf8bb04a (
plain)
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
|
//===--- StmtIterator.cpp - Iterators for Statements ------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines internal methods for StmtIterator.
//
//===----------------------------------------------------------------------===//
#include "clang/AST/StmtIterator.h"
#include "clang/AST/Decl.h"
using namespace clang;
// FIXME: Add support for dependent-sized array types in C++?
// Does it even make sense to build a CFG for an uninstantiated template?
static inline const VariableArrayType *FindVA(const Type* t) {
while (const ArrayType *vt = dyn_cast<ArrayType>(t)) {
if (const VariableArrayType *vat = dyn_cast<VariableArrayType>(vt))
if (vat->getSizeExpr())
return vat;
t = vt->getElementType().getTypePtr();
}
return NULL;
}
void StmtIteratorBase::NextVA() {
assert (getVAPtr());
const VariableArrayType *p = getVAPtr();
p = FindVA(p->getElementType().getTypePtr());
setVAPtr(p);
if (p)
return;
if (inDeclGroup()) {
if (VarDecl* VD = dyn_cast<VarDecl>(*DGI))
if (VD->Init)
return;
NextDecl();
}
else {
assert(inSizeOfTypeVA());
RawVAPtr = 0;
}
}
void StmtIteratorBase::NextDecl(bool ImmediateAdvance) {
assert (getVAPtr() == NULL);
assert(inDeclGroup());
if (ImmediateAdvance)
++DGI;
for ( ; DGI != DGE; ++DGI)
if (HandleDecl(*DGI))
return;
RawVAPtr = 0;
}
bool StmtIteratorBase::HandleDecl(Decl* D) {
if (VarDecl* VD = dyn_cast<VarDecl>(D)) {
if (const VariableArrayType* VAPtr = FindVA(VD->getType().getTypePtr())) {
setVAPtr(VAPtr);
return true;
}
if (VD->getInit())
return true;
}
else if (TypedefNameDecl* TD = dyn_cast<TypedefNameDecl>(D)) {
if (const VariableArrayType* VAPtr =
FindVA(TD->getUnderlyingType().getTypePtr())) {
setVAPtr(VAPtr);
return true;
}
}
else if (EnumConstantDecl* ECD = dyn_cast<EnumConstantDecl>(D)) {
if (ECD->getInitExpr())
return true;
}
return false;
}
StmtIteratorBase::StmtIteratorBase(Decl** dgi, Decl** dge)
: stmt(0), DGI(dgi), RawVAPtr(DeclGroupMode), DGE(dge) {
NextDecl(false);
}
StmtIteratorBase::StmtIteratorBase(const VariableArrayType* t)
: stmt(0), DGI(0), RawVAPtr(SizeOfTypeVAMode) {
RawVAPtr |= reinterpret_cast<uintptr_t>(t);
}
Stmt*& StmtIteratorBase::GetDeclExpr() const {
if (const VariableArrayType* VAPtr = getVAPtr()) {
assert (VAPtr->SizeExpr);
return const_cast<Stmt*&>(VAPtr->SizeExpr);
}
assert (inDeclGroup());
VarDecl* VD = cast<VarDecl>(*DGI);
return *VD->getInitAddress();
}
|
