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
|
#pragma once
#ifdef __GNUC__
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wunused-parameter"
#endif
//===--- DirectoryLookup.h - Info for searching for headers -----*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file defines the DirectoryLookup interface.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_LEX_DIRECTORYLOOKUP_H
#define LLVM_CLANG_LEX_DIRECTORYLOOKUP_H
#include "clang/Basic/LLVM.h"
#include "clang/Basic/FileManager.h"
#include "clang/Basic/SourceManager.h"
#include "clang/Lex/ModuleMap.h"
namespace clang {
class HeaderMap;
class HeaderSearch;
class Module;
/// DirectoryLookup - This class represents one entry in the search list that
/// specifies the search order for directories in \#include directives. It
/// represents either a directory, a framework, or a headermap.
///
class DirectoryLookup {
public:
enum LookupType_t {
LT_NormalDir,
LT_Framework,
LT_HeaderMap
};
private:
union DLU { // This union is discriminated by isHeaderMap.
/// Dir - This is the actual directory that we're referring to for a normal
/// directory or a framework.
DirectoryEntryRef Dir;
/// Map - This is the HeaderMap if this is a headermap lookup.
///
const HeaderMap *Map;
DLU(DirectoryEntryRef Dir) : Dir(Dir) {}
DLU(const HeaderMap *Map) : Map(Map) {}
} u;
/// DirCharacteristic - The type of directory this is: this is an instance of
/// SrcMgr::CharacteristicKind.
unsigned DirCharacteristic : 2;
/// LookupType - This indicates whether this DirectoryLookup object is a
/// normal directory, a framework, or a headermap.
unsigned LookupType : 2;
/// Whether this is a header map used when building a framework.
unsigned IsIndexHeaderMap : 1;
/// Whether we've performed an exhaustive search for module maps
/// within the subdirectories of this directory.
unsigned SearchedAllModuleMaps : 1;
public:
/// This ctor *does not take ownership* of 'Dir'.
DirectoryLookup(DirectoryEntryRef Dir, SrcMgr::CharacteristicKind DT,
bool isFramework)
: u(Dir), DirCharacteristic(DT),
LookupType(isFramework ? LT_Framework : LT_NormalDir),
IsIndexHeaderMap(false), SearchedAllModuleMaps(false) {}
/// This ctor *does not take ownership* of 'Map'.
DirectoryLookup(const HeaderMap *Map, SrcMgr::CharacteristicKind DT,
bool isIndexHeaderMap)
: u(Map), DirCharacteristic(DT), LookupType(LT_HeaderMap),
IsIndexHeaderMap(isIndexHeaderMap), SearchedAllModuleMaps(false) {}
/// getLookupType - Return the kind of directory lookup that this is: either a
/// normal directory, a framework path, or a HeaderMap.
LookupType_t getLookupType() const { return (LookupType_t)LookupType; }
/// getName - Return the directory or filename corresponding to this lookup
/// object.
StringRef getName() const;
/// getDir - Return the directory that this entry refers to.
///
const DirectoryEntry *getDir() const {
return isNormalDir() ? &u.Dir.getDirEntry() : nullptr;
}
/// getFrameworkDir - Return the directory that this framework refers to.
///
const DirectoryEntry *getFrameworkDir() const {
return isFramework() ? &u.Dir.getDirEntry() : nullptr;
}
Optional<DirectoryEntryRef> getFrameworkDirRef() const {
return isFramework() ? Optional<DirectoryEntryRef>(u.Dir) : None;
}
/// getHeaderMap - Return the directory that this entry refers to.
///
const HeaderMap *getHeaderMap() const {
return isHeaderMap() ? u.Map : nullptr;
}
/// isNormalDir - Return true if this is a normal directory, not a header map.
bool isNormalDir() const { return getLookupType() == LT_NormalDir; }
/// isFramework - True if this is a framework directory.
///
bool isFramework() const { return getLookupType() == LT_Framework; }
/// isHeaderMap - Return true if this is a header map, not a normal directory.
bool isHeaderMap() const { return getLookupType() == LT_HeaderMap; }
/// Determine whether we have already searched this entire
/// directory for module maps.
bool haveSearchedAllModuleMaps() const { return SearchedAllModuleMaps; }
/// Specify whether we have already searched all of the subdirectories
/// for module maps.
void setSearchedAllModuleMaps(bool SAMM) {
SearchedAllModuleMaps = SAMM;
}
/// DirCharacteristic - The type of directory this is, one of the DirType enum
/// values.
SrcMgr::CharacteristicKind getDirCharacteristic() const {
return (SrcMgr::CharacteristicKind)DirCharacteristic;
}
/// Whether this describes a system header directory.
bool isSystemHeaderDirectory() const {
return getDirCharacteristic() != SrcMgr::C_User;
}
/// Whether this header map is building a framework or not.
bool isIndexHeaderMap() const {
return isHeaderMap() && IsIndexHeaderMap;
}
/// LookupFile - Lookup the specified file in this search path, returning it
/// if it exists or returning null if not.
///
/// \param Filename The file to look up relative to the search paths.
///
/// \param HS The header search instance to search with.
///
/// \param IncludeLoc the source location of the #include or #import
/// directive.
///
/// \param SearchPath If not NULL, will be set to the search path relative
/// to which the file was found.
///
/// \param RelativePath If not NULL, will be set to the path relative to
/// SearchPath at which the file was found. This only differs from the
/// Filename for framework includes.
///
/// \param RequestingModule The module in which the lookup was performed.
///
/// \param SuggestedModule If non-null, and the file found is semantically
/// part of a known module, this will be set to the module that should
/// be imported instead of preprocessing/parsing the file found.
///
/// \param [out] InUserSpecifiedSystemFramework If the file is found,
/// set to true if the file is located in a framework that has been
/// user-specified to be treated as a system framework.
///
/// \param [out] IsFrameworkFound For a framework directory set to true if
/// specified '.framework' directory is found.
///
/// \param [out] MappedName if this is a headermap which maps the filename to
/// a framework include ("Foo.h" -> "Foo/Foo.h"), set the new name to this
/// vector and point Filename to it.
Optional<FileEntryRef>
LookupFile(StringRef &Filename, HeaderSearch &HS, SourceLocation IncludeLoc,
SmallVectorImpl<char> *SearchPath,
SmallVectorImpl<char> *RelativePath, Module *RequestingModule,
ModuleMap::KnownHeader *SuggestedModule,
bool &InUserSpecifiedSystemFramework, bool &IsFrameworkFound,
bool &IsInHeaderMap, SmallVectorImpl<char> &MappedName) const;
private:
Optional<FileEntryRef> DoFrameworkLookup(
StringRef Filename, HeaderSearch &HS, SmallVectorImpl<char> *SearchPath,
SmallVectorImpl<char> *RelativePath, Module *RequestingModule,
ModuleMap::KnownHeader *SuggestedModule,
bool &InUserSpecifiedSystemFramework, bool &IsFrameworkFound) const;
};
} // end namespace clang
#endif
#ifdef __GNUC__
#pragma GCC diagnostic pop
#endif
|
