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
|
// file : libbuild2/types-parsers.cxx -*- C++ -*-
// license : MIT; see accompanying LICENSE file
#include <libbuild2/types-parsers.hxx>
#include <sstream>
#include <libbuild2/lexer.hxx>
#include <libbuild2/parser.hxx>
namespace build2
{
namespace build
{
namespace cli
{
template <typename T>
static void
parse_path (T& x, scanner& s)
{
const char* o (s.next ());
if (!s.more ())
throw missing_value (o);
const char* v (s.next ());
try
{
x = T (v);
if (x.empty ())
throw invalid_value (o, v);
}
catch (const invalid_path&)
{
throw invalid_value (o, v);
}
}
void parser<path>::
parse (path& x, bool& xs, scanner& s)
{
xs = true;
parse_path (x, s);
}
void parser<dir_path>::
parse (dir_path& x, bool& xs, scanner& s)
{
xs = true;
parse_path (x, s);
}
static names
parse_names (const char* o, const char* v)
{
using build2::parser;
using std::istringstream;
istringstream is (v);
is.exceptions (istringstream::failbit | istringstream::badbit);
// @@ TODO: currently this issues diagnostics to diag_stream.
// Perhaps we should redirect it? Also below.
//
path_name in (o);
lexer l (is, in, 1 /* line */, "\'\"\\$("); // Effective.
parser p (nullptr);
return p.parse_names (l, nullptr, parser::pattern_mode::preserve);
}
void parser<name>::
parse (name& x, bool& xs, scanner& s)
{
const char* o (s.next ());
if (!s.more ())
throw missing_value (o);
const char* v (s.next ());
try
{
names r (parse_names (o, v));
if (r.size () != 1)
throw invalid_value (o, v);
x = move (r.front ());
xs = true;
}
catch (const failed&)
{
throw invalid_value (o, v);
}
}
void parser<pair<name, optional<name>>>::
parse (pair<name, optional<name>>& x, bool& xs, scanner& s)
{
const char* o (s.next ());
if (!s.more ())
throw missing_value (o);
const char* v (s.next ());
try
{
names r (parse_names (o, v));
if (r.size () == 1)
{
x.first = move (r.front ());
x.second = nullopt;
}
else if (r.size () == 2 && r.front ().pair == '@')
{
x.first = move (r.front ());
x.second = move (r.back ());
}
else
throw invalid_value (o, v);
xs = true;
}
catch (const failed&)
{
throw invalid_value (o, v);
}
}
void parser<structured_result_format>::
parse (structured_result_format& x, bool& xs, scanner& s)
{
xs = true;
const char* o (s.next ());
if (!s.more ())
throw missing_value (o);
const string v (s.next ());
if (v == "lines")
x = structured_result_format::lines;
else if (v == "json")
x = structured_result_format::json;
else
throw invalid_value (o, v);
}
}
}
}
|
