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
|
// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef V8_CRDTP_STATUS_H_
#define V8_CRDTP_STATUS_H_
#include <cassert>
#include <cstddef>
#include <limits>
#include <string>
#include "export.h"
namespace v8_crdtp {
// =============================================================================
// Status and Error codes
// =============================================================================
enum class Error {
OK = 0,
// JSON parsing errors; checked when parsing / converting from JSON.
// See json.{h,cc}.
JSON_PARSER_UNPROCESSED_INPUT_REMAINS = 0x01,
JSON_PARSER_STACK_LIMIT_EXCEEDED = 0x02,
JSON_PARSER_NO_INPUT = 0x03,
JSON_PARSER_INVALID_TOKEN = 0x04,
JSON_PARSER_INVALID_NUMBER = 0x05,
JSON_PARSER_INVALID_STRING = 0x06,
JSON_PARSER_UNEXPECTED_ARRAY_END = 0x07,
JSON_PARSER_COMMA_OR_ARRAY_END_EXPECTED = 0x08,
JSON_PARSER_STRING_LITERAL_EXPECTED = 0x09,
JSON_PARSER_COLON_EXPECTED = 0x0a,
JSON_PARSER_UNEXPECTED_MAP_END = 0x0b,
JSON_PARSER_COMMA_OR_MAP_END_EXPECTED = 0x0c,
JSON_PARSER_VALUE_EXPECTED = 0x0d,
// CBOR parsing errors; checked when parsing / converting from CBOR.
CBOR_INVALID_INT32 = 0x0e,
CBOR_INVALID_DOUBLE = 0x0f,
CBOR_INVALID_ENVELOPE = 0x10,
CBOR_ENVELOPE_CONTENTS_LENGTH_MISMATCH = 0x11,
CBOR_MAP_OR_ARRAY_EXPECTED_IN_ENVELOPE = 0x12,
CBOR_INVALID_STRING8 = 0x13,
CBOR_INVALID_STRING16 = 0x14,
CBOR_INVALID_BINARY = 0x15,
CBOR_UNSUPPORTED_VALUE = 0x16,
CBOR_UNEXPECTED_EOF_IN_ENVELOPE = 0x17,
CBOR_INVALID_START_BYTE = 0x18,
CBOR_UNEXPECTED_EOF_EXPECTED_VALUE = 0x19,
CBOR_UNEXPECTED_EOF_IN_ARRAY = 0x1a,
CBOR_UNEXPECTED_EOF_IN_MAP = 0x1b,
CBOR_INVALID_MAP_KEY = 0x1c,
CBOR_DUPLICATE_MAP_KEY = 0x1d,
CBOR_STACK_LIMIT_EXCEEDED = 0x1e,
CBOR_TRAILING_JUNK = 0x1f,
CBOR_MAP_START_EXPECTED = 0x20,
CBOR_MAP_STOP_EXPECTED = 0x21,
CBOR_ARRAY_START_EXPECTED = 0x22,
CBOR_ENVELOPE_SIZE_LIMIT_EXCEEDED = 0x23,
// Message errors are constraints we place on protocol messages coming
// from a protocol client; these are checked in crdtp::Dispatchable
// (see dispatch.h) as it performs a shallow parse.
MESSAGE_MUST_BE_AN_OBJECT = 0x24,
MESSAGE_MUST_HAVE_INTEGER_ID_PROPERTY = 0x25,
MESSAGE_MUST_HAVE_STRING_METHOD_PROPERTY = 0x26,
MESSAGE_MAY_HAVE_STRING_SESSION_ID_PROPERTY = 0x27,
MESSAGE_MAY_HAVE_OBJECT_PARAMS_PROPERTY = 0x28,
MESSAGE_HAS_UNKNOWN_PROPERTY = 0x29,
BINDINGS_MANDATORY_FIELD_MISSING = 0x30,
BINDINGS_BOOL_VALUE_EXPECTED = 0x31,
BINDINGS_INT32_VALUE_EXPECTED = 0x32,
BINDINGS_DOUBLE_VALUE_EXPECTED = 0x33,
BINDINGS_STRING_VALUE_EXPECTED = 0x34,
BINDINGS_STRING8_VALUE_EXPECTED = 0x35,
BINDINGS_BINARY_VALUE_EXPECTED = 0x36,
BINDINGS_DICTIONARY_VALUE_EXPECTED = 0x37,
BINDINGS_INVALID_BASE64_STRING = 0x38,
};
// A status value with position that can be copied. The default status
// is OK. Usually, error status values should come with a valid position.
struct Status {
static constexpr size_t npos() { return std::numeric_limits<size_t>::max(); }
bool ok() const { return error == Error::OK; }
Error error = Error::OK;
size_t pos = npos();
Status(Error error, size_t pos) : error(error), pos(pos) {}
Status() = default;
bool IsMessageError() const {
return error >= Error::MESSAGE_MUST_BE_AN_OBJECT &&
error <= Error::MESSAGE_HAS_UNKNOWN_PROPERTY;
}
// Returns 7 bit US-ASCII string, either "OK" or an error message without
// position.
std::string Message() const;
// Returns a 7 bit US-ASCII string, either "OK" or an error message that
// includes the position.
std::string ToASCIIString() const;
};
template <typename T>
class StatusOr {
public:
explicit StatusOr(const T& value) : value_(value) {}
explicit StatusOr(T&& value) : value_(std::move(value)) {}
explicit StatusOr(const Status& status) : status_(status) {}
bool ok() const { return status_.ok(); }
T& operator*() & {
assert(ok());
return value_;
}
const T& operator*() const& { return value(); }
T&& operator*() && { return value(); }
const Status& status() const { return status_; }
T& value() & { return *this; }
T&& value() && {
assert(ok());
return std::move(value_);
}
const T& value() const& { return *this; }
private:
Status status_;
T value_;
};
} // namespace v8_crdtp
#endif // V8_CRDTP_STATUS_H_
|
