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
|
// file : libbuild2/cc/types.hxx -*- C++ -*-
// license : MIT; see accompanying LICENSE file
#ifndef LIBBUILD2_CC_TYPES_HXX
#define LIBBUILD2_CC_TYPES_HXX
#include <unordered_map>
#include <libbuild2/types.hxx>
#include <libbuild2/utility.hxx>
#include <libbuild2/target-type.hxx>
#include <libbuild2/bin/types.hxx>
namespace build2
{
namespace cc
{
using bin::otype;
using bin::ltype;
using bin::lorder;
using bin::linfo;
using bin::lflags;
using bin::lflag_whole;
// Translation unit information.
//
// We use absolute and normalized header path as the header unit module
// name.
//
// Note that our terminology doesn't exactly align with the (current)
// standard where a header unit is not a module (that is, you either
// import a "module [interface translation unit]" or a "[synthesized]
// header [translation] unit"). On the other hand, lots of the underlying
// mechanics suggest that a header unit is module-like; they end up having
// BMIs (which stand for "binary module interface"), etc. In a sense, a
// header unit is an "interface unit" for (a part of) the global module
// (maybe a partition).
//
// Note also that implementation paritions produce BMIs and are, in a
// sense, module-private interfaces.
//
enum class unit_type
{
non_modular,
module_intf,
module_impl,
module_intf_part,
module_impl_part,
module_header
};
// Note that an interface partition can be imported both as an interface
// (with export) and as implementation (without export).
//
enum class import_type
{
module_intf,
module_part,
module_header
};
struct module_import
{
import_type type;
string name;
bool exported; // True if re-exported (export import M;).
size_t score; // Match score (see compile::search_modules()).
};
using module_imports = vector<module_import>;
struct module_info
{
string name; // Empty if non-modular.
module_imports imports; // Imported modules.
};
struct unit
{
unit_type type = unit_type::non_modular;
build2::cc::module_info module_info;
};
// Ad hoc (as opposed to marked with x.importable) importable headers.
//
// Note that these are only searched for in the system header search
// directories (sys_hdr_dirs).
//
struct importable_headers
{
mutable shared_mutex mutex;
using groups = small_vector<string, 3>;
// Map of groups (e.g., std, <vector>, <boost/*.hpp>) that have already
// been inserted.
//
// For angle-bracket file groups (e.g., <vector>), the value is a
// pointer to the corresponding header_map element. For angle-bracket
// file pattern groups (e.g., <boost/**.hpp>), the value is the number
// of files in the group.
//
// Note that while the case-sensitivity of header names in #include
// directives is implementation-defined, our group names are case-
// sensitive (playing loose with the case will lead to portability
// issues sooner or later so we don't bother with any more elborate
// solutions).
//
std::unordered_map<string, uintptr_t> group_map;
// Map of absolute and normalized header paths to groups (e.g., std,
// <vector>, <boost/**.hpp>) to which they belong. The groups are
// ordered from the most to least specific (e.g., <vector> then std).
//
std::unordered_map<path, groups> header_map;
// Note that all these functions assume the instance is unique-locked.
//
// Search for and insert an angle-bracket file, for example <vector>,
// making it belong to the angle-bracket file group itself. Return the
// pointer to the corresponding header_map element if the file has been
// found and NULL otherwise (so can be used as bool).
//
pair<const path, groups>*
insert_angle (const dir_paths& sys_hdr_dirs, const string& file);
// As above but for a manually-searched absolute and normalized path.
//
pair<const path, groups>&
insert_angle (path, const string& file);
// Search for and insert an angle-bracket file pattern, for example
// <boost/**.hpp>, making each header belong to the angle-bracket file
// group (e.g., <boost/any.hpp>) and the angle-bracket file pattern
// group itself. Return the number of files found that match the
// pattern.
//
size_t
insert_angle_pattern (const dir_paths& sys_hdr_dirs, const string& pat);
};
// Headers and header groups whose inclusion should or should not be
// translated to the corresponding header unit imports.
//
// The key is either an absolute and normalized header path or a reference
// to an importable_headers group (e.g., <vector>, std).
//
using translatable_headers = map<string, optional<bool>>;
// Special translatable header groups.
//
extern const string header_group_all;
extern const string header_group_all_importable;
extern const string header_group_std;
extern const string header_group_std_importable;
// Compiler language.
//
enum class lang {c, cxx};
inline ostream&
operator<< (ostream& os, lang l)
{
return os << (l == lang::c ? "C" : "C++");
}
// Compile target types.
//
struct compile_target_types
{
const target_type& obj;
const target_type& bmi;
const target_type& hbmi;
};
}
}
#endif // LIBBUILD2_CC_TYPES_HXX
|
