parse_error.hpp

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// # This file is a part of toml++ and is subject to the the terms of the MIT license.
// # Copyright (c) Mark Gillard <mark.gillard@outlook.com.au>
// # See https://github.com/marzer/tomlplusplus/blob/master/LICENSE for the full license text.
//  SPDX-License-Identifier: MIT
#pragma once
 
#include "preprocessor.hpp"
#if TOML_ENABLE_PARSER
 
#include "header_start.hpp"
#include "print_to_stream.hpp"
#include "source_region.hpp"
#include "std_except.hpp"
 
#if TOML_DOXYGEN || !TOML_EXCEPTIONS
#define TOML_PARSE_ERROR_BASE
#else
#define TOML_PARSE_ERROR_BASE    : public std::runtime_error
#endif
 
TOML_NAMESPACE_START {
  TOML_ABI_NAMESPACE_BOOL(TOML_EXCEPTIONS, ex, noex);
 
  class parse_error TOML_PARSE_ERROR_BASE {
   private:
#if !TOML_EXCEPTIONS
    std::string description_;
#endif
    source_region source_;
 
   public:
#if TOML_EXCEPTIONS
 
    TOML_NODISCARD_CTOR
    TOML_ATTR(nonnull)
    parse_error(const char* desc, source_region&& src) noexcept  //
        : std::runtime_error{desc}, source_{std::move(src)} {}
 
    TOML_NODISCARD_CTOR
    TOML_ATTR(nonnull)
    parse_error(const char* desc, const source_region& src) noexcept  //
        : parse_error{desc, source_region{src}} {}
 
    TOML_NODISCARD_CTOR
    TOML_ATTR(nonnull)
    parse_error(const char* desc, const source_position& position,
                const source_path_ptr& path = {}) noexcept
        : parse_error{desc, source_region{position, position, path}} {}
 
#else
 
    TOML_NODISCARD_CTOR
    parse_error(std::string&& desc, source_region&& src) noexcept  //
        : description_{std::move(desc)}, source_{std::move(src)} {}
 
    TOML_NODISCARD_CTOR
    parse_error(std::string&& desc, const source_region& src) noexcept  //
        : parse_error{std::move(desc), source_region{src}} {}
 
    TOML_NODISCARD_CTOR
    parse_error(std::string&& desc, const source_position& position,
                const source_path_ptr& path = {}) noexcept
        : parse_error{std::move(desc), source_region{position, position, path}} {}
 
#endif
 
    TOML_NODISCARD
    std::string_view description() const noexcept {
#if TOML_EXCEPTIONS
      return std::string_view{what()};
#else
      return description_;
#endif
    }
 
    TOML_NODISCARD
    const source_region& source() const noexcept { return source_; }
 
    friend std::ostream& operator<<(std::ostream& lhs, const parse_error& rhs) {
      impl::print_to_stream(lhs, rhs.description());
      impl::print_to_stream(lhs, "\n\t(error occurred at "sv);
      impl::print_to_stream(lhs, rhs.source());
      impl::print_to_stream(lhs, ")"sv);
      return lhs;
    }
  };
 
  TOML_ABI_NAMESPACE_END;  // TOML_EXCEPTIONS
}
TOML_NAMESPACE_END;
 
#undef TOML_PARSE_ERROR_BASE
 
#include "header_end.hpp"
#endif  // TOML_ENABLE_PARSER