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
|
// file : build/prerequisite.cxx -*- C++ -*-
// copyright : Copyright (c) 2014-2015 Code Synthesis Ltd
// license : MIT; see accompanying LICENSE file
#include <build/prerequisite>
#include <ostream>
#include <build/scope>
#include <build/target> // target_type
#include <build/context>
#include <build/diagnostics>
using namespace std;
namespace build
{
ostream&
operator<< (ostream& os, const prerequisite_key& pk)
{
// Print scope unless the prerequisite's directory is absolute.
//
if (!pk.tk.dir->absolute ())
{
string s (diag_relative (pk.scope->path (), false));
if (!s.empty ())
os << s << ':';
}
return os << pk.tk;
}
// prerequisite_set
//
auto prerequisite_set::
insert (const target_type& tt,
dir_path dir,
std::string name,
const std::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.
// Find or insert.
//
auto r (emplace (tt, move (dir), move (name), ext, s));
prerequisite& p (const_cast<prerequisite&> (*r.first));
// Update extension if the existing prerequisite has it unspecified.
//
if (p.ext != ext)
{
level4 ([&]{
diag_record r (trace);
r << "assuming prerequisite " << p << " is the same as the "
<< "one with ";
if (ext == nullptr)
r << "unspecified extension";
else if (ext->empty ())
r << "no extension";
else
r << "extension " << *ext;
});
if (ext != nullptr)
p.ext = ext;
}
return pair<prerequisite&, bool> (p, r.second);
}
}
|
