errors.cpp
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#include "crucible/parsing/errors.inl"
#include "crucible/core/format.inl"
namespace crucible::parsing::errors {
namespace {
struct ParsingErrorDescribeVisitor 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";
}
auto operator()(ExpectedExactBytes const &e) const -> std::string {
std::string result { "Expected exact sequence of bytes: " };
auto current { e.bytes.begin() };
auto const end { e.bytes.end() };
if (current != end) {
result += core::format::format_unsigned_hexadecimal(std::to_integer<std::uint8_t>(*current));
++current;
}
while (current != end) {
result += " ";
result += core::format::format_unsigned_hexadecimal(std::to_integer<std::uint8_t>(*current));
++current;
}
return result;
}
auto operator()(InsufficientInput const &e) const -> std::string {
return "Expected " + std::to_string(e.count) + " more bytes of input";
}
};
struct ParsingErrorFormatVisitor 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 {}";
}
auto operator()(ExpectedExactBytes const &e) const -> std::string {
return "ExpectedExactBytes { " + core::format::format_anything(e.bytes) + " }";
}
auto operator()(InsufficientInput const &e) const -> std::string {
return "InsufficientInput { " + core::format::format_anything(e.count) + " }";
}
};
struct ParsingErrorSourceVisitor 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;
}
auto operator()(ExpectedExactBytes const &) const -> std::optional<std::reference_wrapper<core::errors::AbstractError const>> {
return std::nullopt;
}
auto operator()(InsufficientInput 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(ExpectedExactBytes const &variant) :
my_variant { variant } {
}
ParsingError::ParsingError(InsufficientInput const &variant) :
my_variant { variant } {
}
ParsingError::~ParsingError() = default;
auto ParsingError::describe() const -> std::string {
static ParsingErrorDescribeVisitor visitor {};
return std::visit(visitor, my_variant);
}
auto ParsingError::format() const -> std::string {
static ParsingErrorFormatVisitor visitor {};
return "ParsingError { " + std::visit(visitor, my_variant) + " }";
}
auto ParsingError::source() const & -> std::optional<std::reference_wrapper<core::errors::AbstractError const>> {
static ParsingErrorSourceVisitor visitor {};
return std::visit(visitor, my_variant);
}
}