Echo Writes Code

errors.cpp

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#include "crucible/boba/errors.hpp"

namespace crucible::boba::errors {
  namespace {
    struct DescribeForBobaError final {
      auto operator()(const ParsingFailed &e) const -> std::string {
        return "Failed to parse Boba metadata: " + e.parsing_error.describe();
      }
    };

    struct FormatForBobaError final {
      auto operator()(const ParsingFailed &e) const -> std::string {
        return "ParsingFailed { " + e.parsing_error.format() + " }";
      }
    };

    struct SourceForBobaError final {
      auto operator()(const ParsingFailed &e) const -> std::optional<std::reference_wrapper<core::errors::AbstractError const>> {
        return std::cref<core::errors::AbstractError>(e.parsing_error);
      }
    };
  }

  BobaError::BobaError(ParsingFailed const &variant) :
    my_variant { variant } {
  }

  BobaError::~BobaError() = default;

  auto BobaError::describe() const -> std::string {
    return std::visit(DescribeForBobaError {}, my_variant);
  }

  auto BobaError::format() const -> std::string {
    return "BobaError { " + std::visit(FormatForBobaError {}, my_variant) + " }";
  }

  auto BobaError::source() const & -> std::optional<std::reference_wrapper<core::errors::AbstractError const>> {
    return std::visit(SourceForBobaError {}, my_variant);
  }
}