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
|
// file : build/operation.cxx -*- C++ -*-
// copyright : Copyright (c) 2014-2015 Code Synthesis Tools CC
// license : MIT; see accompanying LICENSE file
#include <build/operation>
#include <ostream>
#include <cassert>
#include <functional> // reference_wrapper
#include <build/scope>
#include <build/target>
#include <build/file>
#include <build/algorithm>
#include <build/diagnostics>
#include <build/dump>
using namespace std;
namespace build
{
// action
//
ostream&
operator<< (ostream& os, action a)
{
return os << '('
<< static_cast<uint16_t> (a.meta_operation ()) << ','
<< static_cast<uint16_t> (a.operation ())
<< ')';
}
// perform
//
void
load (const path& bf,
scope& root,
const path& out_base,
const path& src_base,
const location&)
{
// Load project's root[-pre].build.
//
load_root_pre (root);
// Create the base scope. Note that its existence doesn't
// mean it was already processed as a base scope; it can
// be the same as root.
//
scope& base (scopes[out_base]);
base.variables["out_base"] = out_base;
auto v (base.variables["src_base"] = src_base);
base.src_path_ = &v.as<const path&> ();
// Load the buildfile unless it has already been loaded.
//
source_once (bf, root, base, root);
}
void
match (action a,
scope&,
const target_key& tk,
const location& l,
action_targets& ts)
{
tracer trace ("match");
auto i (targets.find (tk, trace));
if (i == targets.end ())
fail (l) << "unknown target " << tk;
target& t (**i);
if (verb >= 5)
dump ();
level4 ([&]{trace << "matching " << t;});
match (a, t);
if (verb >= 5)
dump ();
ts.push_back (&t);
}
void
execute (action a, const action_targets& ts)
{
tracer trace ("execute");
// Build collecting postponed targets (to be re-examined later).
//
vector<reference_wrapper<target>> psp;
for (void* v: ts)
{
target& t (*static_cast<target*> (v));
level4 ([&]{trace << diag_doing (a, t);});
switch (execute (a, t))
{
case target_state::postponed:
{
info << diag_doing (a, t) << " is postponed";
psp.push_back (t);
break;
}
case target_state::unchanged:
{
info << diag_already_done (a, t);
break;
}
case target_state::changed:
break;
case target_state::failed:
//@@ This could probably happen in a parallel build.
default:
assert (false);
}
}
// Re-examine postponed targets.
//
for (target& t: psp)
{
switch (t.state)
{
case target_state::postponed:
{
info << "unable to " << diag_do (a, t) << " at this time";
break;
}
case target_state::unchanged:
{
info << diag_already_done (a, t);
break;
}
case target_state::unknown: // Assume something was done to it.
case target_state::changed:
break;
case target_state::failed:
//@@ This could probably happen in a parallel build.
default:
assert (false);
}
}
}
meta_operation_info perform {
"perform",
"",
"",
"",
nullptr, // meta-operation pre
nullptr, // operation pre
&load,
&match,
&execute,
nullptr, // operation post
nullptr // meta-operation post
};
// operations
//
operation_info default_ {
"<default>",
"",
"",
"",
execution_mode::first
};
operation_info update {
"update",
"update",
"updating",
"up to date",
execution_mode::first
};
operation_info clean {
"clean",
"clean",
"cleaning",
"clean",
execution_mode::last};
}
|
