errors.cpp
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
#include "crucible/parsing/errors.inl"
namespace crucible::parsing::errors {
namespace {
struct DescribeForParsingError final {
auto operator()(AmbiguousMatch const &) const -> std::string {
return "Ambiguous match";
}
auto operator()(UnexpectedInput const &) const -> std::string {
return "Unexpected input";
}
auto operator()(UnexpectedEndOfInput const &) const -> std::string {
return "Unexpected end of input";
}
};
struct FormatForParsingError final {
auto operator()(AmbiguousMatch const &) const -> std::string {
return "AmbiguousMatch {}";
}
auto operator()(UnexpectedInput const &) const -> std::string {
return "UnexpectedInput {}";
}
auto operator()(UnexpectedEndOfInput const &) const -> std::string {
return "UnexpectedEndOfInput {}";
}
};
struct SourceForParsingError final {
auto operator()(AmbiguousMatch const &) const -> std::optional<std::reference_wrapper<core::errors::AbstractError const>> {
return std::nullopt;
}
auto operator()(UnexpectedInput const &) const -> std::optional<std::reference_wrapper<core::errors::AbstractError const>> {
return std::nullopt;
}
auto operator()(UnexpectedEndOfInput const &) const -> std::optional<std::reference_wrapper<core::errors::AbstractError const>> {
return std::nullopt;
}
};
}
ParsingError::ParsingError(AmbiguousMatch const &variant) :
my_variant { variant } {
}
ParsingError::ParsingError(UnexpectedInput const &variant) :
my_variant { variant } {
}
ParsingError::ParsingError(UnexpectedEndOfInput const &variant) :
my_variant { variant } {
}
ParsingError::~ParsingError() = default;
auto ParsingError::describe() const -> std::string {
return std::visit(DescribeForParsingError {}, my_variant);
}
auto ParsingError::format() const -> std::string {
return "ParsingError { " + std::visit(FormatForParsingError {}, my_variant) + " }";
}
auto ParsingError::source() const & -> std::optional<std::reference_wrapper<core::errors::AbstractError const>> {
return std::visit(SourceForParsingError {}, my_variant);
}
}