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
|
//===-- UnresolvedSet.h - Unresolved sets of declarations ------*- 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 UnresolvedSet class, which is used to store
// collections of declarations in the AST.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_AST_UNRESOLVEDSET_H
#define LLVM_CLANG_AST_UNRESOLVEDSET_H
#include <iterator>
#include "llvm/ADT/SmallVector.h"
#include "clang/AST/DeclAccessPair.h"
namespace clang {
/// The iterator over UnresolvedSets. Serves as both the const and
/// non-const iterator.
class UnresolvedSetIterator {
private:
typedef llvm::SmallVectorImpl<DeclAccessPair> DeclsTy;
typedef DeclsTy::iterator IteratorTy;
IteratorTy ir;
friend class UnresolvedSetImpl;
explicit UnresolvedSetIterator(DeclsTy::iterator ir) : ir(ir) {}
explicit UnresolvedSetIterator(DeclsTy::const_iterator ir) :
ir(const_cast<DeclsTy::iterator>(ir)) {}
public:
UnresolvedSetIterator() {}
typedef std::iterator_traits<IteratorTy>::difference_type difference_type;
typedef NamedDecl *value_type;
typedef NamedDecl **pointer;
typedef NamedDecl *reference;
typedef std::iterator_traits<IteratorTy>::iterator_category iterator_category;
NamedDecl *getDecl() const { return ir->getDecl(); }
AccessSpecifier getAccess() const { return ir->getAccess(); }
DeclAccessPair getPair() const { return *ir; }
NamedDecl *operator*() const { return getDecl(); }
UnresolvedSetIterator &operator++() { ++ir; return *this; }
UnresolvedSetIterator operator++(int) { return UnresolvedSetIterator(ir++); }
UnresolvedSetIterator &operator--() { --ir; return *this; }
UnresolvedSetIterator operator--(int) { return UnresolvedSetIterator(ir--); }
UnresolvedSetIterator &operator+=(difference_type d) {
ir += d; return *this;
}
UnresolvedSetIterator operator+(difference_type d) const {
return UnresolvedSetIterator(ir + d);
}
UnresolvedSetIterator &operator-=(difference_type d) {
ir -= d; return *this;
}
UnresolvedSetIterator operator-(difference_type d) const {
return UnresolvedSetIterator(ir - d);
}
value_type operator[](difference_type d) const { return *(*this + d); }
difference_type operator-(const UnresolvedSetIterator &o) const {
return ir - o.ir;
}
bool operator==(const UnresolvedSetIterator &o) const { return ir == o.ir; }
bool operator!=(const UnresolvedSetIterator &o) const { return ir != o.ir; }
bool operator<(const UnresolvedSetIterator &o) const { return ir < o.ir; }
bool operator<=(const UnresolvedSetIterator &o) const { return ir <= o.ir; }
bool operator>=(const UnresolvedSetIterator &o) const { return ir >= o.ir; }
bool operator>(const UnresolvedSetIterator &o) const { return ir > o.ir; }
};
/// UnresolvedSet - A set of unresolved declarations. This is needed
/// in a lot of places, but isn't really worth breaking into its own
/// header right now.
class UnresolvedSetImpl {
typedef UnresolvedSetIterator::DeclsTy DeclsTy;
// Don't allow direct construction, and only permit subclassing by
// UnresolvedSet.
private:
template <unsigned N> friend class UnresolvedSet;
UnresolvedSetImpl() {}
UnresolvedSetImpl(const UnresolvedSetImpl &) {}
public:
// We don't currently support assignment through this iterator, so we might
// as well use the same implementation twice.
typedef UnresolvedSetIterator iterator;
typedef UnresolvedSetIterator const_iterator;
iterator begin() { return iterator(decls().begin()); }
iterator end() { return iterator(decls().end()); }
const_iterator begin() const { return const_iterator(decls().begin()); }
const_iterator end() const { return const_iterator(decls().end()); }
void addDecl(NamedDecl *D) {
addDecl(D, AS_none);
}
void addDecl(NamedDecl *D, AccessSpecifier AS) {
decls().push_back(DeclAccessPair::make(D, AS));
}
/// Replaces the given declaration with the new one, once.
///
/// \return true if the set changed
bool replace(const NamedDecl* Old, NamedDecl *New) {
for (DeclsTy::iterator I = decls().begin(), E = decls().end(); I != E; ++I)
if (I->getDecl() == Old)
return (I->setDecl(New), true);
return false;
}
/// Replaces the declaration at the given iterator with the new one,
/// preserving the original access bits.
void replace(iterator I, NamedDecl *New) {
I.ir->setDecl(New);
}
void replace(iterator I, NamedDecl *New, AccessSpecifier AS) {
I.ir->set(New, AS);
}
void erase(unsigned I) {
decls()[I] = decls().back();
decls().pop_back();
}
void erase(iterator I) {
*I.ir = decls().back();
decls().pop_back();
}
void setAccess(iterator I, AccessSpecifier AS) {
I.ir->setAccess(AS);
}
void clear() { decls().clear(); }
void set_size(unsigned N) { decls().set_size(N); }
bool empty() const { return decls().empty(); }
unsigned size() const { return decls().size(); }
void append(iterator I, iterator E) {
decls().append(I.ir, E.ir);
}
DeclAccessPair &operator[](unsigned I) { return decls()[I]; }
const DeclAccessPair &operator[](unsigned I) const { return decls()[I]; }
private:
// These work because the only permitted subclass is UnresolvedSetImpl
DeclsTy &decls() {
return *reinterpret_cast<DeclsTy*>(this);
}
const DeclsTy &decls() const {
return *reinterpret_cast<const DeclsTy*>(this);
}
};
/// A set of unresolved declarations
template <unsigned InlineCapacity> class UnresolvedSet :
public UnresolvedSetImpl {
llvm::SmallVector<DeclAccessPair, InlineCapacity> Decls;
};
} // namespace clang
#endif
|
