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
|
// file : build2/prerequisite.cxx -*- C++ -*-
// copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
// license : MIT; see accompanying LICENSE file
#include <build2/prerequisite>
#include <build2/scope>
#include <build2/target> // target_type
#include <build2/context>
#include <build2/diagnostics>
using namespace std;
namespace build2
{
// prerequisite_key
//
const optional<string> prerequisite_key::nullproj = nullopt;
ostream&
operator<< (ostream& os, const prerequisite_key& pk)
{
if (pk.proj)
os << *pk.proj << '%';
//
// Don't print scope if we are project-qualified or the prerequisite's
// directory is absolute. In both these cases the scope is not used to
// resolve it to target.
//
else if (!pk.tk.dir->absolute ())
{
// Avoid printing './' in './:...', similar to what we do for the
// directory in target_key.
//
const dir_path& s (pk.scope->out_path ());
if (stream_verb (os) < 2)
{
const string& r (diag_relative (s, false));
if (!r.empty ())
os << r << ':';
}
else
os << s << ':';
}
return os << pk.tk;
}
// prerequisite_set
//
auto prerequisite_set::
insert (optional<string> proj,
const target_type& tt,
dir_path dir,
dir_path out,
string name,
optional<string> ext,
scope& s,
tracer& trace) -> pair<prerequisite&, bool>
{
//@@ OPT: would be nice to somehow first check if this prerequisite is
// already in the set before allocating a new instance. Something with
// bounds and insert hints?
// Find or insert.
//
auto r (emplace (move (proj),
tt,
move (dir),
move (out),
move (name),
ext, // Note: cannot move.
s));
prerequisite& p (const_cast<prerequisite&> (*r.first));
// Update extension if the existing prerequisite has it unspecified.
//
if (p.ext != ext)
{
l5 ([&]{
diag_record r (trace);
r << "assuming prerequisite " << p << " is the same as the "
<< "one with ";
if (!ext)
r << "unspecified extension";
else if (ext->empty ())
r << "no extension";
else
r << "extension " << *ext;
});
if (ext)
const_cast<optional<string>&> (p.ext) = move (ext);
}
return pair<prerequisite&, bool> (p, r.second);
}
}
|
