blob: f2f33a21780f4a9967a426333ca7cfb629ae98e6 (
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
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
|
//===- CXString.cpp - Routines for manipulating CXStrings -----------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines routines for manipulating CXStrings. It should be the
// only file that has internal knowledge of the encoding of the data in
// CXStrings.
//
//===----------------------------------------------------------------------===//
#include "CXString.h"
#include "CXTranslationUnit.h"
#include "clang-c/Index.h"
#include "clang/Frontend/ASTUnit.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/Support/ErrorHandling.h"
using namespace clang;
using namespace clang::cxstring;
enum CXStringFlag { CXS_Unmanaged, CXS_Malloc, CXS_StringBuf };
//===----------------------------------------------------------------------===//
// Basic generation of CXStrings.
//===----------------------------------------------------------------------===//
CXString cxstring::createEmpty() {
CXString Str;
Str.data = "";
Str.private_flags = CXS_Unmanaged;
return Str;
}
CXString cxstring::createNull() {
CXString Str;
Str.data = 0;
Str.private_flags = CXS_Unmanaged;
return Str;
}
CXString cxstring::createCXString(const char *String, bool DupString){
CXString Str;
if (DupString) {
Str.data = strdup(String);
Str.private_flags = (unsigned) CXS_Malloc;
} else {
Str.data = String;
Str.private_flags = (unsigned) CXS_Unmanaged;
}
return Str;
}
CXString cxstring::createCXString(StringRef String, bool DupString) {
CXString Result;
if (DupString || (!String.empty() && String.data()[String.size()] != 0)) {
char *Spelling = static_cast<char *>(malloc(String.size() + 1));
memmove(Spelling, String.data(), String.size());
Spelling[String.size()] = 0;
Result.data = Spelling;
Result.private_flags = (unsigned) CXS_Malloc;
} else {
Result.data = String.data();
Result.private_flags = (unsigned) CXS_Unmanaged;
}
return Result;
}
CXString cxstring::createCXString(CXStringBuf *buf) {
CXString Str;
Str.data = buf;
Str.private_flags = (unsigned) CXS_StringBuf;
return Str;
}
//===----------------------------------------------------------------------===//
// String pools.
//===----------------------------------------------------------------------===//
cxstring::CXStringPool::~CXStringPool() {
for (std::vector<CXStringBuf *>::iterator I = Pool.begin(), E = Pool.end();
I != E; ++I) {
delete *I;
}
}
CXStringBuf *cxstring::CXStringPool::getCXStringBuf(CXTranslationUnit TU) {
if (Pool.empty())
return new CXStringBuf(TU);
CXStringBuf *Buf = Pool.back();
Buf->Data.clear();
Pool.pop_back();
return Buf;
}
CXStringBuf *cxstring::getCXStringBuf(CXTranslationUnit TU) {
return TU->StringPool->getCXStringBuf(TU);
}
void cxstring::CXStringBuf::dispose() {
TU->StringPool->Pool.push_back(this);
}
bool cxstring::isManagedByPool(CXString str) {
return ((CXStringFlag) str.private_flags) == CXS_StringBuf;
}
//===----------------------------------------------------------------------===//
// libClang public APIs.
//===----------------------------------------------------------------------===//
extern "C" {
const char *clang_getCString(CXString string) {
if (string.private_flags == (unsigned) CXS_StringBuf) {
return static_cast<const CXStringBuf *>(string.data)->Data.data();
}
return static_cast<const char *>(string.data);
}
void clang_disposeString(CXString string) {
switch ((CXStringFlag) string.private_flags) {
case CXS_Unmanaged:
break;
case CXS_Malloc:
if (string.data)
free(const_cast<void *>(string.data));
break;
case CXS_StringBuf:
static_cast<CXStringBuf *>(
const_cast<void *>(string.data))->dispose();
break;
}
}
} // end: extern "C"
|
