combinators.inl
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#ifndef CRUCIBLE_PARSING_COMBINATORS_INL
#define CRUCIBLE_PARSING_COMBINATORS_INL
#include "crucible/parsing/combinators.hpp"
#include "crucible/parsing/result.inl"
#include <sstream>
namespace crucible::parsing::combinators {
template<typename LHS_PARSER, typename RHS_PARSER>
BothMatch<LHS_PARSER, RHS_PARSER>::BothMatch(StateType const &initial_state, StateType const &lhs_next_state, StateType const &rhs_next_state) :
my_initial_state { initial_state },
my_lhs_next_state { lhs_next_state },
my_rhs_next_state { rhs_next_state } {
}
template<typename LHS_PARSER, typename RHS_PARSER>
auto BothMatch<LHS_PARSER, RHS_PARSER>::format() const -> std::string {
std::ostringstream buffer {};
buffer
<< "Range of first match: ["
<< my_initial_state.format_location()
<< ", "
<< my_lhs_next_state.format_location()
<< "]; Range of second match: ["
<< my_initial_state.format_location()
<< ", "
<< my_rhs_next_state.format_location()
<< "]";
return buffer.str();
}
template<typename LHS_PARSER, typename RHS_PARSER>
NeitherMatch<LHS_PARSER, RHS_PARSER>::NeitherMatch(LHSErrorType const &lhs_error, RHSErrorType const &rhs_error) :
my_lhs_error { lhs_error },
my_rhs_error { rhs_error } {
}
template<typename LHS_PARSER, typename RHS_PARSER>
auto NeitherMatch<LHS_PARSER, RHS_PARSER>::format() const -> std::string {
std::ostringstream buffer {};
buffer
<< "First rejection: '"
<< my_lhs_error.format()
<< "'; Second rejection: '"
<< my_rhs_error.format()
<< "'";
return buffer.str();
}
template<typename LHS_PARSER, typename RHS_PARSER>
OneOf<LHS_PARSER, RHS_PARSER>::OneOf(LHS_PARSER const &lhs_parser, RHS_PARSER const &rhs_parser) :
my_lhs_parser { lhs_parser },
my_rhs_parser { rhs_parser } {
}
template<typename LHS_PARSER, typename RHS_PARSER>
auto OneOf<LHS_PARSER, RHS_PARSER>::operator()(StateType const &state) const -> ResultType {
auto const lhs_result { my_lhs_parser(state) };
auto const rhs_result { my_rhs_parser(state) };
if (lhs_result.has_success() && rhs_result.has_success()) {
auto const &lhs_accept { lhs_result.get_success() };
auto const &lhs_next_state { lhs_accept.get_state() };
auto const &rhs_accept { rhs_result.get_success() };
auto const &rhs_next_state { rhs_accept.get_state() };
return result::reject(state, OneOfError<LHS_PARSER, RHS_PARSER> { BothMatch<LHS_PARSER, RHS_PARSER> { state, lhs_next_state, rhs_next_state } });
} else if (lhs_result.has_success()) {
return lhs_result;
} else if (rhs_result.has_success()) {
return rhs_result;
} else {
auto const &lhs_reject { lhs_result.get_failure() };
auto const &lhs_error { lhs_reject.get_error() };
auto const &rhs_reject { rhs_result.get_failure() };
auto const &rhs_error { rhs_reject.get_error() };
return result::reject(state, OneOfError<LHS_PARSER, RHS_PARSER> { NeitherMatch<LHS_PARSER, RHS_PARSER> { lhs_error, rhs_error } });
}
}
template<typename LHS_PARSER, typename RHS_PARSER>
AndThenError<LHS_PARSER, RHS_PARSER>::AndThenError(core::either::LHS<LHSErrorType> const &lhs_error) :
my_storage { lhs_error } {
}
template<typename LHS_PARSER, typename RHS_PARSER>
AndThenError<LHS_PARSER, RHS_PARSER>::AndThenError(core::either::RHS<RHSErrorType> const &rhs_error) :
my_storage { rhs_error } {
}
template<typename LHS_PARSER, typename RHS_PARSER>
auto AndThenError<LHS_PARSER, RHS_PARSER>::has_lhs_error() const -> bool {
return my_storage.has_lhs();
}
template<typename LHS_PARSER, typename RHS_PARSER>
auto AndThenError<LHS_PARSER, RHS_PARSER>::has_rhs_error() const -> bool {
return my_storage.has_rhs();
}
template<typename LHS_PARSER, typename RHS_PARSER>
auto AndThenError<LHS_PARSER, RHS_PARSER>::get_lhs_error() const -> LHSErrorType {
return my_storage.get_lhs();
}
template<typename LHS_PARSER, typename RHS_PARSER>
auto AndThenError<LHS_PARSER, RHS_PARSER>::get_rhs_error() const -> RHSErrorType {
return my_storage.get_rhs();
}
template<typename LHS_PARSER, typename RHS_PARSER>
auto AndThenError<LHS_PARSER, RHS_PARSER>::format() const -> std::string {
if (my_storage.has_lhs()) {
auto const &lhs_error = my_storage.get_lhs();
return lhs_error.format();
} else {
auto const &rhs_error = my_storage.get_rhs();
return rhs_error.format();
}
}
template<typename LHS_PARSER, typename RHS_PARSER>
AndThen<LHS_PARSER, RHS_PARSER>::AndThen(LHS_PARSER const &lhs_parser, RHS_PARSER const &rhs_parser) :
my_lhs_parser { lhs_parser },
my_rhs_parser { rhs_parser } {
}
template<typename LHS_PARSER, typename RHS_PARSER>
auto AndThen<LHS_PARSER, RHS_PARSER>::operator()(StateType const &state) const -> ResultType {
auto const lhs_result { my_lhs_parser(state) };
if (lhs_result.has_failure()) {
auto const &lhs_reject { lhs_result.get_failure() };
auto const &lhs_error { lhs_reject.get_error() };
return result::reject(state, AndThenError<LHS_PARSER, RHS_PARSER> { core::either::make_lhs(lhs_error) });
}
auto const &lhs_accept { lhs_result.get_success() };
auto const &lhs_next_state { lhs_accept.get_state() };
auto const rhs_result { my_rhs_parser(lhs_next_state) };
if (rhs_result.has_failure()) {
auto const &rhs_reject { rhs_result.get_failure() };
auto const &rhs_error { rhs_reject.get_error() };
return result::reject(state, AndThenError<LHS_PARSER, RHS_PARSER> { core::either::make_rhs(rhs_error) });
}
auto const &rhs_accept { rhs_result.get_success() };
auto const &rhs_next_state { rhs_accept.get_state() };
auto const &lhs_value { lhs_accept.get_value() };
auto const &rhs_value { rhs_accept.get_value() };
return result::accept(rhs_next_state, std::make_pair(lhs_value, rhs_value));
}
template<typename LHS_PARSER, typename RHS_PARSER>
IntoError<LHS_PARSER, RHS_PARSER>::IntoError(core::either::LHS<LHSErrorType> const &lhs_error) :
my_storage { lhs_error } {
}
template<typename LHS_PARSER, typename RHS_PARSER>
IntoError<LHS_PARSER, RHS_PARSER>::IntoError(core::either::RHS<RHSErrorType> const &rhs_error) :
my_storage { rhs_error } {
}
template<typename LHS_PARSER, typename RHS_PARSER>
auto IntoError<LHS_PARSER, RHS_PARSER>::has_lhs_error() const -> bool {
return my_storage.has_lhs();
}
template<typename LHS_PARSER, typename RHS_PARSER>
auto IntoError<LHS_PARSER, RHS_PARSER>::has_rhs_error() const -> bool {
return my_storage.has_rhs();
}
template<typename LHS_PARSER, typename RHS_PARSER>
auto IntoError<LHS_PARSER, RHS_PARSER>::get_lhs_error() const -> LHSErrorType {
return my_storage.get_lhs();
}
template<typename LHS_PARSER, typename RHS_PARSER>
auto IntoError<LHS_PARSER, RHS_PARSER>::get_rhs_error() const -> RHSErrorType {
return my_storage.get_rhs();
}
template<typename LHS_PARSER, typename RHS_PARSER>
auto IntoError<LHS_PARSER, RHS_PARSER>::format() const -> std::string {
if (my_storage.has_lhs()) {
auto const &lhs_error = my_storage.get_lhs();
return lhs_error.format();
} else {
auto const &rhs_error = my_storage.get_rhs();
return rhs_error.format();
}
}
template<typename PARSER, typename FUNCTION>
Into<PARSER, FUNCTION>::Into(PARSER const &parser, FUNCTION const &function) :
my_parser { parser },
my_function { function } {
}
template<typename PARSER, typename FUNCTION>
auto Into<PARSER, FUNCTION>::operator()(StateType const &state) const -> ResultType {
auto const lhs_result = my_parser(state);
if (lhs_result.has_failure()) {
auto const &lhs_reject = lhs_result.get_failure();
auto const &lhs_error = lhs_reject.get_error();
return result::reject(state, IntoError<LHSParserType, RHSParserType> { core::either::make_lhs(lhs_error) });
}
auto const &lhs_accept = lhs_result.get_success();
auto const rhs_parser = my_function(lhs_accept.get_value());
auto const rhs_result = rhs_parser(lhs_accept.get_state());
if (rhs_result.has_failure()) {
auto const &rhs_reject = rhs_result.get_failure();
auto const &rhs_error = rhs_reject.get_error();
return result::reject(state, IntoError<LHSParserType, RHSParserType> { core::either::make_rhs(rhs_error) });
}
auto const &rhs_accept = rhs_result.get_success();
return result::accept(rhs_accept.get_state(), rhs_accept.get_value());
}
namespace operators {
template<typename LHS_PARSER, typename RHS_PARSER>
auto operator^(LHS_PARSER const &lhs_parser, RHS_PARSER const &rhs_parser) -> OneOf<LHS_PARSER, RHS_PARSER> {
return { lhs_parser, rhs_parser };
}
template<typename LHS_PARSER, typename RHS_PARSER>
auto operator&(LHS_PARSER const &lhs_parser, RHS_PARSER const &rhs_parser) -> AndThen<LHS_PARSER, RHS_PARSER> {
return { lhs_parser, rhs_parser };
}
template<typename PARSER, typename FUNCTION>
auto operator>>(PARSER const &parser, FUNCTION const &function) -> Into<PARSER, FUNCTION> {
return { parser, function };
}
}
}
#endif // CRUCIBLE_PARSING_COMBINATORS_INL