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
|
// file : libbuild2/build/script/runner.hxx -*- C++ -*-
// license : MIT; see accompanying LICENSE file
#ifndef LIBBUILD2_BUILD_SCRIPT_RUNNER_HXX
#define LIBBUILD2_BUILD_SCRIPT_RUNNER_HXX
#include <libbuild2/types.hxx>
#include <libbuild2/utility.hxx>
#include <libbuild2/build/script/script.hxx>
namespace build2
{
namespace build
{
struct common;
namespace script
{
class runner
{
public:
// Location is the script start location (for diagnostics, etc).
//
virtual void
enter (environment&, const location&) = 0;
// Index is the 1-base index of this command line in the command list.
// If it is 0 then it means there is only one command. This
// information can be used, for example, to derive file names.
//
// Location is the start position of this command line in the script.
// It can be used in diagnostics.
//
virtual void
run (environment&,
const command_expr&,
size_t index,
const location&) = 0;
virtual bool
run_if (environment&,
const command_expr&,
size_t,
const location&) = 0;
// Location is the script end location (for diagnostics, etc).
//
virtual void
leave (environment&, const location&) = 0;
};
// Run command expressions.
//
// In dry-run mode don't run the expressions unless they are if-
// conditions or execute the set or exit builtins, but print them at
// verbosity level 2 and up.
//
class default_runner: public runner
{
public:
virtual void
enter (environment&, const location&) override;
virtual void
run (environment&,
const command_expr&,
size_t,
const location&) override;
virtual bool
run_if (environment&,
const command_expr&,
size_t,
const location&) override;
virtual void
leave (environment&, const location&) override;
};
}
}
}
#endif // LIBBUILD2_BUILD_SCRIPT_RUNNER_HXX
|
