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
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
#include "orcus/json_parser_base.hpp"
#include "orcus/cell_buffer.hpp"
#include "numeric_parser.hpp"
#include <cassert>
#include <cmath>
namespace orcus { namespace json {
namespace {
const char* parse_numeric_json(const char* p, const char* p_end, double& value)
{
using numeric_parser_type = detail::numeric_parser<detail::json_parser_trait>;
numeric_parser_type parser(p, p_end);
double v = parser.parse();
if (!std::isnan(v))
p = parser.get_char_position();
value = v;
return p;
};
} // anonymous namespace
struct parser_base::impl
{
cell_buffer m_buffer;
};
parser_base::parser_base(std::string_view content) :
orcus::parser_base(content.data(), content.size()), mp_impl(std::make_unique<impl>())
{
set_numeric_parser(parse_numeric_json);
}
parser_base::~parser_base() {}
void parser_base::skip_ws()
{
skip(" \n\r\t");
}
void parser_base::parse_true()
{
if (!parse_expected("true"))
throw parse_error("parse_true: boolean 'true' expected.", offset());
skip_ws();
}
void parser_base::parse_false()
{
if (!parse_expected("false"))
throw parse_error("parse_false: boolean 'false' expected.", offset());
skip_ws();
}
void parser_base::parse_null()
{
if (!parse_expected("null"))
throw parse_error("parse_null: null expected.", offset());
skip_ws();
}
double parser_base::parse_double_or_throw()
{
double v = parse_double();
if (std::isnan(v))
throw parse_error("parse_double_or_throw: failed to parse double precision value.", offset());
return v;
}
parse_quoted_string_state parser_base::parse_string()
{
assert(cur_char() == '"');
size_t max_length = remaining_size();
const char* p = mp_char;
parse_quoted_string_state ret = parse_double_quoted_string(p, max_length, mp_impl->m_buffer);
if (ret.has_control_character)
throw parse_error("parse_string: string contains a control character.", offset());
mp_char = p;
if (ret.str)
skip_ws();
return ret;
}
}}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
