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Merge pull request #46 from ToruNiina/toml-literal

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feat: add ""_toml literal
This commit is contained in:
Toru Niina
2019-03-20 10:12:56 +09:00
committed by GitHub
parent 55e3d70869 b51a8d5966
commit 65b10b6537
5 changed files with 188 additions and 2 deletions
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4
toml/get.hpp
View File

@@ -113,7 +113,7 @@ inline std::string get(value&& v)
template<typename T, typename std::enable_if<
detail::is_chrono_duration<T>::value, std::nullptr_t>::type = nullptr>
inline T get(value& v)
inline T get(const value& v)
{
return std::chrono::duration_cast<T>(
std::chrono::nanoseconds(v.cast<value_t::LocalTime>()));
@@ -125,7 +125,7 @@ inline T get(value& v)
template<typename T, typename std::enable_if<
std::is_same<std::chrono::system_clock::time_point, T>::value,
std::nullptr_t>::type = nullptr>
inline T get(value& v)
inline T get(const value& v)
{
switch(v.type())
{

55
toml/literal.hpp Normal file
View File

@@ -0,0 +1,55 @@
// Copyright Toru Niina 2019.
// Distributed under the MIT License.
#ifndef TOML11_LITERAL_HPP
#define TOML11_LITERAL_HPP
#include "parser.hpp"
namespace toml
{
inline namespace literals
{
inline namespace toml_literals
{
inline ::toml::value operator""_toml(const char* str, std::size_t len)
{
::toml::detail::location<std::vector<char>>
loc(/* filename = */ std::string("TOML literal encoded in a C++ code"),
/* contents = */ std::vector<char>(str, str + len));
// if there are some comments or empty lines, skip them.
using skip_line = ::toml::detail::repeat<toml::detail::sequence<
::toml::detail::maybe<::toml::detail::lex_ws>,
::toml::detail::maybe<::toml::detail::lex_comment>,
::toml::detail::lex_newline
>, ::toml::detail::at_least<1>>;
skip_line::invoke(loc);
// if there are some whitespaces before a value, skip them.
using skip_ws = ::toml::detail::repeat<
::toml::detail::lex_ws, ::toml::detail::at_least<1>>;
skip_ws::invoke(loc);
// literal may be a bare value. try them first.
if(auto data = ::toml::detail::parse_value(loc))
{
return data.unwrap();
}
// literal is a TOML file (i.e. multiline table).
if(auto data = ::toml::detail::parse_toml_file(loc))
{
loc.iter() = loc.begin(); // rollback to the top of the literal
return ::toml::value(std::move(data.unwrap()),
::toml::detail::region<std::vector<char>>(std::move(loc)));
}
else // none of them.
{
throw ::toml::syntax_error(data.unwrap_err());
}
}
} // toml_literals
} // literals
} // toml
#endif//TOML11_LITERAL_HPP