toml11/toml/value.hpp
2021-08-27 19:52:45 -04:00

2036 lines
80 KiB
C++

// Copyright Toru Niina 2017.
// Distributed under the MIT License.
#ifndef TOML11_VALUE_HPP
#define TOML11_VALUE_HPP
#include <cassert>
#include "comments.hpp"
#include "exception.hpp"
#include "into.hpp"
#include "region.hpp"
#include "source_location.hpp"
#include "storage.hpp"
#include "traits.hpp"
#include "types.hpp"
#include "utility.hpp"
namespace toml
{
namespace detail
{
// to show error messages. not recommended for users.
template<typename Value>
inline region_base const* get_region(const Value& v)
{
return v.region_info_.get();
}
template<typename Value>
void change_region(Value& v, region reg)
{
v.region_info_ = std::make_shared<region>(std::move(reg));
return;
}
template<value_t Expected, typename Value>
[[noreturn]] inline void
throw_bad_cast(const std::string& funcname, value_t actual, const Value& v)
{
throw type_error(detail::format_underline(
concat_to_string(funcname, "bad_cast to ", Expected), {
{v.location(), concat_to_string("the actual type is ", actual)}
}), v.location());
}
// Throw `out_of_range` from `toml::value::at()` and `toml::find()`
// after generating an error message.
//
// The implementation is a bit complicated and there are many edge-cases.
// If you are not interested in the error message generation, just skip this.
template<typename Value>
[[noreturn]] void
throw_key_not_found_error(const Value& v, const key& ky)
{
// The top-level table has its region at the first character of the file.
// That means that, in the case when a key is not found in the top-level
// table, the error message points to the first character. If the file has
// its first table at the first line, the error message would be like this.
// ```console
// [error] key "a" not found
// --> example.toml
// |
// 1 | [table]
// | ^------ in this table
// ```
// It actually points to the top-level table at the first character,
// not `[table]`. But it is too confusing. To avoid the confusion, the error
// message should explicitly say "key not found in the top-level table",
// or "the parsed file is empty" if there is no content at all (0 bytes in file).
const auto loc = v.location();
if(loc.line() == 1 && loc.region() == 0)
{
// First line with a zero-length region means "empty file".
// The region will be generated at `parse_toml_file` function
// if the file contains no bytes.
throw std::out_of_range(format_underline(concat_to_string(
"key \"", ky, "\" not found in the top-level table"), {
{loc, "the parsed file is empty"}
}));
}
else if(loc.line() == 1 && loc.region() == 1)
{
// Here it assumes that top-level table starts at the first character.
// The region corresponds to the top-level table will be generated at
// `parse_toml_file` function.
// It also assumes that the top-level table size is just one and
// the line number is `1`. It is always satisfied. And those conditions
// are satisfied only if the table is the top-level table.
//
// 1. one-character dot-key at the first line
// ```toml
// a.b = "c"
// ```
// toml11 counts whole key as the table key. Here, `a.b` is the region
// of the table "a". It could be counter intuitive, but it works.
// The size of the region is 3, not 1. The above example is the shortest
// dot-key example. The size cannot be 1.
//
// 2. one-character inline-table at the first line
// ```toml
// a = {b = "c"}
// ```
// toml11 considers the inline table body as the table region. Here,
// `{b = "c"}` is the region of the table "a". The size of the region
// is 9, not 1. The shotest inline table still has two characters, `{`
// and `}`. The size cannot be 1.
//
// 3. one-character table declaration at the first line
// ```toml
// [a]
// ```
// toml11 considers the whole table key as the table region. Here,
// `[a]` is the table region. The size is 3, not 1.
//
throw std::out_of_range(format_underline(concat_to_string(
"key \"", ky, "\" not found in the top-level table"), {
{loc, "the top-level table starts here"}
}));
}
else
{
// normal table.
throw std::out_of_range(format_underline(concat_to_string(
"key \"", ky, "\" not found"), { {loc, "in this table"} }));
}
}
// switch by `value_t` at the compile time.
template<value_t T>
struct switch_cast {};
#define TOML11_GENERATE_SWITCH_CASTER(TYPE) \
template<> \
struct switch_cast<value_t::TYPE> \
{ \
template<typename Value> \
static typename Value::TYPE##_type& invoke(Value& v) \
{ \
return v.as_##TYPE(); \
} \
template<typename Value> \
static typename Value::TYPE##_type const& invoke(const Value& v) \
{ \
return v.as_##TYPE(); \
} \
template<typename Value> \
static typename Value::TYPE##_type&& invoke(Value&& v) \
{ \
return std::move(v).as_##TYPE(); \
} \
}; \
/**/
TOML11_GENERATE_SWITCH_CASTER(boolean)
TOML11_GENERATE_SWITCH_CASTER(integer)
TOML11_GENERATE_SWITCH_CASTER(floating)
TOML11_GENERATE_SWITCH_CASTER(string)
TOML11_GENERATE_SWITCH_CASTER(offset_datetime)
TOML11_GENERATE_SWITCH_CASTER(local_datetime)
TOML11_GENERATE_SWITCH_CASTER(local_date)
TOML11_GENERATE_SWITCH_CASTER(local_time)
TOML11_GENERATE_SWITCH_CASTER(array)
TOML11_GENERATE_SWITCH_CASTER(table)
#undef TOML11_GENERATE_SWITCH_CASTER
}// detail
template<typename Comment, // discard/preserve_comment
template<typename ...> class Table = std::unordered_map,
template<typename ...> class Array = std::vector>
class basic_value
{
template<typename T, typename U>
static void assigner(T& dst, U&& v)
{
const auto tmp = ::new(std::addressof(dst)) T(std::forward<U>(v));
assert(tmp == std::addressof(dst));
(void)tmp;
}
using region_base = detail::region_base;
template<typename C, template<typename ...> class T,
template<typename ...> class A>
friend class basic_value;
public:
using comment_type = Comment;
using key_type = ::toml::key;
using value_type = basic_value<comment_type, Table, Array>;
using boolean_type = ::toml::boolean;
using integer_type = ::toml::integer;
using floating_type = ::toml::floating;
using string_type = ::toml::string;
using local_time_type = ::toml::local_time;
using local_date_type = ::toml::local_date;
using local_datetime_type = ::toml::local_datetime;
using offset_datetime_type = ::toml::offset_datetime;
using array_type = Array<value_type>;
using table_type = Table<key_type, value_type>;
public:
basic_value() noexcept
: type_(value_t::empty),
region_info_(std::make_shared<region_base>(region_base{}))
{}
~basic_value() noexcept {this->cleanup();}
basic_value(const basic_value& v)
: type_(v.type()), region_info_(v.region_info_), comments_(v.comments_)
{
switch(v.type())
{
case value_t::boolean : assigner(boolean_ , v.boolean_ ); break;
case value_t::integer : assigner(integer_ , v.integer_ ); break;
case value_t::floating : assigner(floating_ , v.floating_ ); break;
case value_t::string : assigner(string_ , v.string_ ); break;
case value_t::offset_datetime: assigner(offset_datetime_, v.offset_datetime_); break;
case value_t::local_datetime : assigner(local_datetime_ , v.local_datetime_ ); break;
case value_t::local_date : assigner(local_date_ , v.local_date_ ); break;
case value_t::local_time : assigner(local_time_ , v.local_time_ ); break;
case value_t::array : assigner(array_ , v.array_ ); break;
case value_t::table : assigner(table_ , v.table_ ); break;
default: break;
}
}
basic_value(basic_value&& v)
: type_(v.type()), region_info_(std::move(v.region_info_)),
comments_(std::move(v.comments_))
{
switch(this->type_) // here this->type_ is already initialized
{
case value_t::boolean : assigner(boolean_ , std::move(v.boolean_ )); break;
case value_t::integer : assigner(integer_ , std::move(v.integer_ )); break;
case value_t::floating : assigner(floating_ , std::move(v.floating_ )); break;
case value_t::string : assigner(string_ , std::move(v.string_ )); break;
case value_t::offset_datetime: assigner(offset_datetime_, std::move(v.offset_datetime_)); break;
case value_t::local_datetime : assigner(local_datetime_ , std::move(v.local_datetime_ )); break;
case value_t::local_date : assigner(local_date_ , std::move(v.local_date_ )); break;
case value_t::local_time : assigner(local_time_ , std::move(v.local_time_ )); break;
case value_t::array : assigner(array_ , std::move(v.array_ )); break;
case value_t::table : assigner(table_ , std::move(v.table_ )); break;
default: break;
}
}
basic_value& operator=(const basic_value& v)
{
this->cleanup();
this->region_info_ = v.region_info_;
this->comments_ = v.comments_;
this->type_ = v.type();
switch(this->type_)
{
case value_t::boolean : assigner(boolean_ , v.boolean_ ); break;
case value_t::integer : assigner(integer_ , v.integer_ ); break;
case value_t::floating : assigner(floating_ , v.floating_ ); break;
case value_t::string : assigner(string_ , v.string_ ); break;
case value_t::offset_datetime: assigner(offset_datetime_, v.offset_datetime_); break;
case value_t::local_datetime : assigner(local_datetime_ , v.local_datetime_ ); break;
case value_t::local_date : assigner(local_date_ , v.local_date_ ); break;
case value_t::local_time : assigner(local_time_ , v.local_time_ ); break;
case value_t::array : assigner(array_ , v.array_ ); break;
case value_t::table : assigner(table_ , v.table_ ); break;
default: break;
}
return *this;
}
basic_value& operator=(basic_value&& v)
{
this->cleanup();
this->region_info_ = std::move(v.region_info_);
this->comments_ = std::move(v.comments_);
this->type_ = v.type();
switch(this->type_)
{
case value_t::boolean : assigner(boolean_ , std::move(v.boolean_ )); break;
case value_t::integer : assigner(integer_ , std::move(v.integer_ )); break;
case value_t::floating : assigner(floating_ , std::move(v.floating_ )); break;
case value_t::string : assigner(string_ , std::move(v.string_ )); break;
case value_t::offset_datetime: assigner(offset_datetime_, std::move(v.offset_datetime_)); break;
case value_t::local_datetime : assigner(local_datetime_ , std::move(v.local_datetime_ )); break;
case value_t::local_date : assigner(local_date_ , std::move(v.local_date_ )); break;
case value_t::local_time : assigner(local_time_ , std::move(v.local_time_ )); break;
case value_t::array : assigner(array_ , std::move(v.array_ )); break;
case value_t::table : assigner(table_ , std::move(v.table_ )); break;
default: break;
}
return *this;
}
// overwrite comments ----------------------------------------------------
basic_value(const basic_value& v, std::vector<std::string> com)
: type_(v.type()), region_info_(v.region_info_),
comments_(std::move(com))
{
switch(v.type())
{
case value_t::boolean : assigner(boolean_ , v.boolean_ ); break;
case value_t::integer : assigner(integer_ , v.integer_ ); break;
case value_t::floating : assigner(floating_ , v.floating_ ); break;
case value_t::string : assigner(string_ , v.string_ ); break;
case value_t::offset_datetime: assigner(offset_datetime_, v.offset_datetime_); break;
case value_t::local_datetime : assigner(local_datetime_ , v.local_datetime_ ); break;
case value_t::local_date : assigner(local_date_ , v.local_date_ ); break;
case value_t::local_time : assigner(local_time_ , v.local_time_ ); break;
case value_t::array : assigner(array_ , v.array_ ); break;
case value_t::table : assigner(table_ , v.table_ ); break;
default: break;
}
}
basic_value(basic_value&& v, std::vector<std::string> com)
: type_(v.type()), region_info_(std::move(v.region_info_)),
comments_(std::move(com))
{
switch(this->type_) // here this->type_ is already initialized
{
case value_t::boolean : assigner(boolean_ , std::move(v.boolean_ )); break;
case value_t::integer : assigner(integer_ , std::move(v.integer_ )); break;
case value_t::floating : assigner(floating_ , std::move(v.floating_ )); break;
case value_t::string : assigner(string_ , std::move(v.string_ )); break;
case value_t::offset_datetime: assigner(offset_datetime_, std::move(v.offset_datetime_)); break;
case value_t::local_datetime : assigner(local_datetime_ , std::move(v.local_datetime_ )); break;
case value_t::local_date : assigner(local_date_ , std::move(v.local_date_ )); break;
case value_t::local_time : assigner(local_time_ , std::move(v.local_time_ )); break;
case value_t::array : assigner(array_ , std::move(v.array_ )); break;
case value_t::table : assigner(table_ , std::move(v.table_ )); break;
default: break;
}
}
// -----------------------------------------------------------------------
// conversion between different basic_values.
template<typename C,
template<typename ...> class T,
template<typename ...> class A>
basic_value(const basic_value<C, T, A>& v)
: type_(v.type()), region_info_(v.region_info_), comments_(v.comments())
{
switch(v.type())
{
case value_t::boolean : assigner(boolean_ , v.boolean_ ); break;
case value_t::integer : assigner(integer_ , v.integer_ ); break;
case value_t::floating : assigner(floating_ , v.floating_ ); break;
case value_t::string : assigner(string_ , v.string_ ); break;
case value_t::offset_datetime: assigner(offset_datetime_, v.offset_datetime_); break;
case value_t::local_datetime : assigner(local_datetime_ , v.local_datetime_ ); break;
case value_t::local_date : assigner(local_date_ , v.local_date_ ); break;
case value_t::local_time : assigner(local_time_ , v.local_time_ ); break;
case value_t::array :
{
array_type tmp(v.as_array(std::nothrow).begin(),
v.as_array(std::nothrow).end());
assigner(array_, std::move(tmp));
break;
}
case value_t::table :
{
table_type tmp(v.as_table(std::nothrow).begin(),
v.as_table(std::nothrow).end());
assigner(table_, std::move(tmp));
break;
}
default: break;
}
}
template<typename C,
template<typename ...> class T,
template<typename ...> class A>
basic_value(const basic_value<C, T, A>& v, std::vector<std::string> com)
: type_(v.type()), region_info_(v.region_info_),
comments_(std::move(com))
{
switch(v.type())
{
case value_t::boolean : assigner(boolean_ , v.boolean_ ); break;
case value_t::integer : assigner(integer_ , v.integer_ ); break;
case value_t::floating : assigner(floating_ , v.floating_ ); break;
case value_t::string : assigner(string_ , v.string_ ); break;
case value_t::offset_datetime: assigner(offset_datetime_, v.offset_datetime_); break;
case value_t::local_datetime : assigner(local_datetime_ , v.local_datetime_ ); break;
case value_t::local_date : assigner(local_date_ , v.local_date_ ); break;
case value_t::local_time : assigner(local_time_ , v.local_time_ ); break;
case value_t::array :
{
array_type tmp(v.as_array(std::nothrow).begin(),
v.as_array(std::nothrow).end());
assigner(array_, std::move(tmp));
break;
}
case value_t::table :
{
table_type tmp(v.as_table(std::nothrow).begin(),
v.as_table(std::nothrow).end());
assigner(table_, std::move(tmp));
break;
}
default: break;
}
}
template<typename C,
template<typename ...> class T,
template<typename ...> class A>
basic_value& operator=(const basic_value<C, T, A>& v)
{
this->region_info_ = v.region_info_;
this->comments_ = comment_type(v.comments());
this->type_ = v.type();
switch(v.type())
{
case value_t::boolean : assigner(boolean_ , v.boolean_ ); break;
case value_t::integer : assigner(integer_ , v.integer_ ); break;
case value_t::floating : assigner(floating_ , v.floating_ ); break;
case value_t::string : assigner(string_ , v.string_ ); break;
case value_t::offset_datetime: assigner(offset_datetime_, v.offset_datetime_); break;
case value_t::local_datetime : assigner(local_datetime_ , v.local_datetime_ ); break;
case value_t::local_date : assigner(local_date_ , v.local_date_ ); break;
case value_t::local_time : assigner(local_time_ , v.local_time_ ); break;
case value_t::array :
{
array_type tmp(v.as_array(std::nothrow).begin(),
v.as_array(std::nothrow).end());
assigner(array_, std::move(tmp));
break;
}
case value_t::table :
{
table_type tmp(v.as_table(std::nothrow).begin(),
v.as_table(std::nothrow).end());
assigner(table_, std::move(tmp));
break;
}
default: break;
}
return *this;
}
// boolean ==============================================================
basic_value(boolean b)
: type_(value_t::boolean),
region_info_(std::make_shared<region_base>(region_base{}))
{
assigner(this->boolean_, b);
}
basic_value& operator=(boolean b)
{
this->cleanup();
this->type_ = value_t::boolean;
this->region_info_ = std::make_shared<region_base>(region_base{});
assigner(this->boolean_, b);
return *this;
}
basic_value(boolean b, std::vector<std::string> com)
: type_(value_t::boolean),
region_info_(std::make_shared<region_base>(region_base{})),
comments_(std::move(com))
{
assigner(this->boolean_, b);
}
// integer ==============================================================
template<typename T, typename std::enable_if<detail::conjunction<
std::is_integral<T>, detail::negation<std::is_same<T, boolean>>>::value,
std::nullptr_t>::type = nullptr>
basic_value(T i)
: type_(value_t::integer),
region_info_(std::make_shared<region_base>(region_base{}))
{
assigner(this->integer_, static_cast<integer>(i));
}
template<typename T, typename std::enable_if<detail::conjunction<
std::is_integral<T>, detail::negation<std::is_same<T, boolean>>>::value,
std::nullptr_t>::type = nullptr>
basic_value& operator=(T i)
{
this->cleanup();
this->type_ = value_t::integer;
this->region_info_ = std::make_shared<region_base>(region_base{});
assigner(this->integer_, static_cast<integer>(i));
return *this;
}
template<typename T, typename std::enable_if<detail::conjunction<
std::is_integral<T>, detail::negation<std::is_same<T, boolean>>>::value,
std::nullptr_t>::type = nullptr>
basic_value(T i, std::vector<std::string> com)
: type_(value_t::integer),
region_info_(std::make_shared<region_base>(region_base{})),
comments_(std::move(com))
{
assigner(this->integer_, static_cast<integer>(i));
}
// floating =============================================================
template<typename T, typename std::enable_if<
std::is_floating_point<T>::value, std::nullptr_t>::type = nullptr>
basic_value(T f)
: type_(value_t::floating),
region_info_(std::make_shared<region_base>(region_base{}))
{
assigner(this->floating_, static_cast<floating>(f));
}
template<typename T, typename std::enable_if<
std::is_floating_point<T>::value, std::nullptr_t>::type = nullptr>
basic_value& operator=(T f)
{
this->cleanup();
this->type_ = value_t::floating;
this->region_info_ = std::make_shared<region_base>(region_base{});
assigner(this->floating_, static_cast<floating>(f));
return *this;
}
template<typename T, typename std::enable_if<
std::is_floating_point<T>::value, std::nullptr_t>::type = nullptr>
basic_value(T f, std::vector<std::string> com)
: type_(value_t::floating),
region_info_(std::make_shared<region_base>(region_base{})),
comments_(std::move(com))
{
assigner(this->floating_, f);
}
// string ===============================================================
basic_value(toml::string s)
: type_(value_t::string),
region_info_(std::make_shared<region_base>(region_base{}))
{
assigner(this->string_, std::move(s));
}
basic_value& operator=(toml::string s)
{
this->cleanup();
this->type_ = value_t::string ;
this->region_info_ = std::make_shared<region_base>(region_base{});
assigner(this->string_, s);
return *this;
}
basic_value(toml::string s, std::vector<std::string> com)
: type_(value_t::string),
region_info_(std::make_shared<region_base>(region_base{})),
comments_(std::move(com))
{
assigner(this->string_, std::move(s));
}
basic_value(std::string s)
: type_(value_t::string),
region_info_(std::make_shared<region_base>(region_base{}))
{
assigner(this->string_, toml::string(std::move(s)));
}
basic_value& operator=(std::string s)
{
this->cleanup();
this->type_ = value_t::string ;
this->region_info_ = std::make_shared<region_base>(region_base{});
assigner(this->string_, toml::string(std::move(s)));
return *this;
}
basic_value(std::string s, string_t kind)
: type_(value_t::string),
region_info_(std::make_shared<region_base>(region_base{}))
{
assigner(this->string_, toml::string(std::move(s), kind));
}
basic_value(std::string s, std::vector<std::string> com)
: type_(value_t::string),
region_info_(std::make_shared<region_base>(region_base{})),
comments_(std::move(com))
{
assigner(this->string_, toml::string(std::move(s)));
}
basic_value(std::string s, string_t kind, std::vector<std::string> com)
: type_(value_t::string),
region_info_(std::make_shared<region_base>(region_base{})),
comments_(std::move(com))
{
assigner(this->string_, toml::string(std::move(s), kind));
}
basic_value(const char* s)
: type_(value_t::string),
region_info_(std::make_shared<region_base>(region_base{}))
{
assigner(this->string_, toml::string(std::string(s)));
}
basic_value& operator=(const char* s)
{
this->cleanup();
this->type_ = value_t::string ;
this->region_info_ = std::make_shared<region_base>(region_base{});
assigner(this->string_, toml::string(std::string(s)));
return *this;
}
basic_value(const char* s, string_t kind)
: type_(value_t::string),
region_info_(std::make_shared<region_base>(region_base{}))
{
assigner(this->string_, toml::string(std::string(s), kind));
}
basic_value(const char* s, std::vector<std::string> com)
: type_(value_t::string),
region_info_(std::make_shared<region_base>(region_base{})),
comments_(std::move(com))
{
assigner(this->string_, toml::string(std::string(s)));
}
basic_value(const char* s, string_t kind, std::vector<std::string> com)
: type_(value_t::string),
region_info_(std::make_shared<region_base>(region_base{})),
comments_(std::move(com))
{
assigner(this->string_, toml::string(std::string(s), kind));
}
#if __cplusplus >= 201703L
basic_value(std::string_view s)
: type_(value_t::string),
region_info_(std::make_shared<region_base>(region_base{}))
{
assigner(this->string_, toml::string(s));
}
basic_value& operator=(std::string_view s)
{
this->cleanup();
this->type_ = value_t::string ;
this->region_info_ = std::make_shared<region_base>(region_base{});
assigner(this->string_, toml::string(s));
return *this;
}
basic_value(std::string_view s, std::vector<std::string> com)
: type_(value_t::string),
region_info_(std::make_shared<region_base>(region_base{})),
comments_(std::move(com))
{
assigner(this->string_, toml::string(s));
}
basic_value(std::string_view s, string_t kind)
: type_(value_t::string),
region_info_(std::make_shared<region_base>(region_base{}))
{
assigner(this->string_, toml::string(s, kind));
}
basic_value(std::string_view s, string_t kind, std::vector<std::string> com)
: type_(value_t::string),
region_info_(std::make_shared<region_base>(region_base{})),
comments_(std::move(com))
{
assigner(this->string_, toml::string(s, kind));
}
#endif
// local date ===========================================================
basic_value(const local_date& ld)
: type_(value_t::local_date),
region_info_(std::make_shared<region_base>(region_base{}))
{
assigner(this->local_date_, ld);
}
basic_value& operator=(const local_date& ld)
{
this->cleanup();
this->type_ = value_t::local_date;
this->region_info_ = std::make_shared<region_base>(region_base{});
assigner(this->local_date_, ld);
return *this;
}
basic_value(const local_date& ld, std::vector<std::string> com)
: type_(value_t::local_date),
region_info_(std::make_shared<region_base>(region_base{})),
comments_(std::move(com))
{
assigner(this->local_date_, ld);
}
// local time ===========================================================
basic_value(const local_time& lt)
: type_(value_t::local_time),
region_info_(std::make_shared<region_base>(region_base{}))
{
assigner(this->local_time_, lt);
}
basic_value(const local_time& lt, std::vector<std::string> com)
: type_(value_t::local_time),
region_info_(std::make_shared<region_base>(region_base{})),
comments_(std::move(com))
{
assigner(this->local_time_, lt);
}
basic_value& operator=(const local_time& lt)
{
this->cleanup();
this->type_ = value_t::local_time;
this->region_info_ = std::make_shared<region_base>(region_base{});
assigner(this->local_time_, lt);
return *this;
}
template<typename Rep, typename Period>
basic_value(const std::chrono::duration<Rep, Period>& dur)
: type_(value_t::local_time),
region_info_(std::make_shared<region_base>(region_base{}))
{
assigner(this->local_time_, local_time(dur));
}
template<typename Rep, typename Period>
basic_value(const std::chrono::duration<Rep, Period>& dur,
std::vector<std::string> com)
: type_(value_t::local_time),
region_info_(std::make_shared<region_base>(region_base{})),
comments_(std::move(com))
{
assigner(this->local_time_, local_time(dur));
}
template<typename Rep, typename Period>
basic_value& operator=(const std::chrono::duration<Rep, Period>& dur)
{
this->cleanup();
this->type_ = value_t::local_time;
this->region_info_ = std::make_shared<region_base>(region_base{});
assigner(this->local_time_, local_time(dur));
return *this;
}
// local datetime =======================================================
basic_value(const local_datetime& ldt)
: type_(value_t::local_datetime),
region_info_(std::make_shared<region_base>(region_base{}))
{
assigner(this->local_datetime_, ldt);
}
basic_value(const local_datetime& ldt, std::vector<std::string> com)
: type_(value_t::local_datetime),
region_info_(std::make_shared<region_base>(region_base{})),
comments_(std::move(com))
{
assigner(this->local_datetime_, ldt);
}
basic_value& operator=(const local_datetime& ldt)
{
this->cleanup();
this->type_ = value_t::local_datetime;
this->region_info_ = std::make_shared<region_base>(region_base{});
assigner(this->local_datetime_, ldt);
return *this;
}
// offset datetime ======================================================
basic_value(const offset_datetime& odt)
: type_(value_t::offset_datetime),
region_info_(std::make_shared<region_base>(region_base{}))
{
assigner(this->offset_datetime_, odt);
}
basic_value(const offset_datetime& odt, std::vector<std::string> com)
: type_(value_t::offset_datetime),
region_info_(std::make_shared<region_base>(region_base{})),
comments_(std::move(com))
{
assigner(this->offset_datetime_, odt);
}
basic_value& operator=(const offset_datetime& odt)
{
this->cleanup();
this->type_ = value_t::offset_datetime;
this->region_info_ = std::make_shared<region_base>(region_base{});
assigner(this->offset_datetime_, odt);
return *this;
}
basic_value(const std::chrono::system_clock::time_point& tp)
: type_(value_t::offset_datetime),
region_info_(std::make_shared<region_base>(region_base{}))
{
assigner(this->offset_datetime_, offset_datetime(tp));
}
basic_value(const std::chrono::system_clock::time_point& tp,
std::vector<std::string> com)
: type_(value_t::offset_datetime),
region_info_(std::make_shared<region_base>(region_base{})),
comments_(std::move(com))
{
assigner(this->offset_datetime_, offset_datetime(tp));
}
basic_value& operator=(const std::chrono::system_clock::time_point& tp)
{
this->cleanup();
this->type_ = value_t::offset_datetime;
this->region_info_ = std::make_shared<region_base>(region_base{});
assigner(this->offset_datetime_, offset_datetime(tp));
return *this;
}
// array ================================================================
basic_value(const array_type& ary)
: type_(value_t::array),
region_info_(std::make_shared<region_base>(region_base{}))
{
assigner(this->array_, ary);
}
basic_value(const array_type& ary, std::vector<std::string> com)
: type_(value_t::array),
region_info_(std::make_shared<region_base>(region_base{})),
comments_(std::move(com))
{
assigner(this->array_, ary);
}
basic_value& operator=(const array_type& ary)
{
this->cleanup();
this->type_ = value_t::array ;
this->region_info_ = std::make_shared<region_base>(region_base{});
assigner(this->array_, ary);
return *this;
}
// array (initializer_list) ----------------------------------------------
template<typename T, typename std::enable_if<
std::is_convertible<T, value_type>::value,
std::nullptr_t>::type = nullptr>
basic_value(std::initializer_list<T> list)
: type_(value_t::array),
region_info_(std::make_shared<region_base>(region_base{}))
{
array_type ary(list.begin(), list.end());
assigner(this->array_, std::move(ary));
}
template<typename T, typename std::enable_if<
std::is_convertible<T, value_type>::value,
std::nullptr_t>::type = nullptr>
basic_value(std::initializer_list<T> list, std::vector<std::string> com)
: type_(value_t::array),
region_info_(std::make_shared<region_base>(region_base{})),
comments_(std::move(com))
{
array_type ary(list.begin(), list.end());
assigner(this->array_, std::move(ary));
}
template<typename T, typename std::enable_if<
std::is_convertible<T, value_type>::value,
std::nullptr_t>::type = nullptr>
basic_value& operator=(std::initializer_list<T> list)
{
this->cleanup();
this->type_ = value_t::array;
this->region_info_ = std::make_shared<region_base>(region_base{});
array_type ary(list.begin(), list.end());
assigner(this->array_, std::move(ary));
return *this;
}
// array (STL Containers) ------------------------------------------------
template<typename T, typename std::enable_if<detail::conjunction<
detail::negation<std::is_same<T, array_type>>,
detail::is_container<T>
>::value, std::nullptr_t>::type = nullptr>
basic_value(const T& list)
: type_(value_t::array),
region_info_(std::make_shared<region_base>(region_base{}))
{
static_assert(std::is_convertible<typename T::value_type, value_type>::value,
"elements of a container should be convertible to toml::value");
array_type ary(list.size());
std::copy(list.begin(), list.end(), ary.begin());
assigner(this->array_, std::move(ary));
}
template<typename T, typename std::enable_if<detail::conjunction<
detail::negation<std::is_same<T, array_type>>,
detail::is_container<T>
>::value, std::nullptr_t>::type = nullptr>
basic_value(const T& list, std::vector<std::string> com)
: type_(value_t::array),
region_info_(std::make_shared<region_base>(region_base{})),
comments_(std::move(com))
{
static_assert(std::is_convertible<typename T::value_type, value_type>::value,
"elements of a container should be convertible to toml::value");
array_type ary(list.size());
std::copy(list.begin(), list.end(), ary.begin());
assigner(this->array_, std::move(ary));
}
template<typename T, typename std::enable_if<detail::conjunction<
detail::negation<std::is_same<T, array_type>>,
detail::is_container<T>
>::value, std::nullptr_t>::type = nullptr>
basic_value& operator=(const T& list)
{
static_assert(std::is_convertible<typename T::value_type, value_type>::value,
"elements of a container should be convertible to toml::value");
this->cleanup();
this->type_ = value_t::array;
this->region_info_ = std::make_shared<region_base>(region_base{});
array_type ary(list.size());
std::copy(list.begin(), list.end(), ary.begin());
assigner(this->array_, std::move(ary));
return *this;
}
// table ================================================================
basic_value(const table_type& tab)
: type_(value_t::table),
region_info_(std::make_shared<region_base>(region_base{}))
{
assigner(this->table_, tab);
}
basic_value(const table_type& tab, std::vector<std::string> com)
: type_(value_t::table),
region_info_(std::make_shared<region_base>(region_base{})),
comments_(std::move(com))
{
assigner(this->table_, tab);
}
basic_value& operator=(const table_type& tab)
{
this->cleanup();
this->type_ = value_t::table;
this->region_info_ = std::make_shared<region_base>(region_base{});
assigner(this->table_, tab);
return *this;
}
// initializer-list ------------------------------------------------------
basic_value(std::initializer_list<std::pair<key, basic_value>> list)
: type_(value_t::table),
region_info_(std::make_shared<region_base>(region_base{}))
{
table_type tab;
for(const auto& elem : list) {tab[elem.first] = elem.second;}
assigner(this->table_, std::move(tab));
}
basic_value(std::initializer_list<std::pair<key, basic_value>> list,
std::vector<std::string> com)
: type_(value_t::table),
region_info_(std::make_shared<region_base>(region_base{})),
comments_(std::move(com))
{
table_type tab;
for(const auto& elem : list) {tab[elem.first] = elem.second;}
assigner(this->table_, std::move(tab));
}
basic_value& operator=(std::initializer_list<std::pair<key, basic_value>> list)
{
this->cleanup();
this->type_ = value_t::table;
this->region_info_ = std::make_shared<region_base>(region_base{});
table_type tab;
for(const auto& elem : list) {tab[elem.first] = elem.second;}
assigner(this->table_, std::move(tab));
return *this;
}
// other table-like -----------------------------------------------------
template<typename Map, typename std::enable_if<detail::conjunction<
detail::negation<std::is_same<Map, table_type>>,
detail::is_map<Map>
>::value, std::nullptr_t>::type = nullptr>
basic_value(const Map& mp)
: type_(value_t::table),
region_info_(std::make_shared<region_base>(region_base{}))
{
table_type tab;
for(const auto& elem : mp) {tab[elem.first] = elem.second;}
assigner(this->table_, std::move(tab));
}
template<typename Map, typename std::enable_if<detail::conjunction<
detail::negation<std::is_same<Map, table_type>>,
detail::is_map<Map>
>::value, std::nullptr_t>::type = nullptr>
basic_value(const Map& mp, std::vector<std::string> com)
: type_(value_t::table),
region_info_(std::make_shared<region_base>(region_base{})),
comments_(std::move(com))
{
table_type tab;
for(const auto& elem : mp) {tab[elem.first] = elem.second;}
assigner(this->table_, std::move(tab));
}
template<typename Map, typename std::enable_if<detail::conjunction<
detail::negation<std::is_same<Map, table_type>>,
detail::is_map<Map>
>::value, std::nullptr_t>::type = nullptr>
basic_value& operator=(const Map& mp)
{
this->cleanup();
this->type_ = value_t::table;
this->region_info_ = std::make_shared<region_base>(region_base{});
table_type tab;
for(const auto& elem : mp) {tab[elem.first] = elem.second;}
assigner(this->table_, std::move(tab));
return *this;
}
// user-defined =========================================================
// convert using into_toml() method -------------------------------------
template<typename T, typename std::enable_if<
detail::has_into_toml_method<T>::value, std::nullptr_t>::type = nullptr>
basic_value(const T& ud): basic_value(ud.into_toml()) {}
template<typename T, typename std::enable_if<
detail::has_into_toml_method<T>::value, std::nullptr_t>::type = nullptr>
basic_value(const T& ud, std::vector<std::string> com)
: basic_value(ud.into_toml(), std::move(com))
{}
template<typename T, typename std::enable_if<
detail::has_into_toml_method<T>::value, std::nullptr_t>::type = nullptr>
basic_value& operator=(const T& ud)
{
*this = ud.into_toml();
return *this;
}
// convert using into<T> struct -----------------------------------------
template<typename T, std::size_t S = sizeof(::toml::into<T>)>
basic_value(const T& ud): basic_value(::toml::into<T>::into_toml(ud)) {}
template<typename T, std::size_t S = sizeof(::toml::into<T>)>
basic_value(const T& ud, std::vector<std::string> com)
: basic_value(::toml::into<T>::into_toml(ud), std::move(com))
{}
template<typename T, std::size_t S = sizeof(::toml::into<T>)>
basic_value& operator=(const T& ud)
{
*this = ::toml::into<T>::into_toml(ud);
return *this;
}
// for internal use ------------------------------------------------------
//
// Those constructors take detail::region that contains parse result.
basic_value(boolean b, detail::region reg, std::vector<std::string> cm)
: type_(value_t::boolean),
region_info_(std::make_shared<detail::region>(std::move(reg))),
comments_(std::move(cm))
{
assigner(this->boolean_, b);
}
template<typename T, typename std::enable_if<
detail::conjunction<
std::is_integral<T>, detail::negation<std::is_same<T, boolean>>
>::value, std::nullptr_t>::type = nullptr>
basic_value(T i, detail::region reg, std::vector<std::string> cm)
: type_(value_t::integer),
region_info_(std::make_shared<detail::region>(std::move(reg))),
comments_(std::move(cm))
{
assigner(this->integer_, static_cast<integer>(i));
}
template<typename T, typename std::enable_if<
std::is_floating_point<T>::value, std::nullptr_t>::type = nullptr>
basic_value(T f, detail::region reg, std::vector<std::string> cm)
: type_(value_t::floating),
region_info_(std::make_shared<detail::region>(std::move(reg))),
comments_(std::move(cm))
{
assigner(this->floating_, static_cast<floating>(f));
}
basic_value(toml::string s, detail::region reg,
std::vector<std::string> cm)
: type_(value_t::string),
region_info_(std::make_shared<detail::region>(std::move(reg))),
comments_(std::move(cm))
{
assigner(this->string_, std::move(s));
}
basic_value(const local_date& ld, detail::region reg,
std::vector<std::string> cm)
: type_(value_t::local_date),
region_info_(std::make_shared<detail::region>(std::move(reg))),
comments_(std::move(cm))
{
assigner(this->local_date_, ld);
}
basic_value(const local_time& lt, detail::region reg,
std::vector<std::string> cm)
: type_(value_t::local_time),
region_info_(std::make_shared<detail::region>(std::move(reg))),
comments_(std::move(cm))
{
assigner(this->local_time_, lt);
}
basic_value(const local_datetime& ldt, detail::region reg,
std::vector<std::string> cm)
: type_(value_t::local_datetime),
region_info_(std::make_shared<detail::region>(std::move(reg))),
comments_(std::move(cm))
{
assigner(this->local_datetime_, ldt);
}
basic_value(const offset_datetime& odt, detail::region reg,
std::vector<std::string> cm)
: type_(value_t::offset_datetime),
region_info_(std::make_shared<detail::region>(std::move(reg))),
comments_(std::move(cm))
{
assigner(this->offset_datetime_, odt);
}
basic_value(const array_type& ary, detail::region reg,
std::vector<std::string> cm)
: type_(value_t::array),
region_info_(std::make_shared<detail::region>(std::move(reg))),
comments_(std::move(cm))
{
assigner(this->array_, ary);
}
basic_value(const table_type& tab, detail::region reg,
std::vector<std::string> cm)
: type_(value_t::table),
region_info_(std::make_shared<detail::region>(std::move(reg))),
comments_(std::move(cm))
{
assigner(this->table_, tab);
}
template<typename T, typename std::enable_if<
detail::is_exact_toml_type<T, value_type>::value,
std::nullptr_t>::type = nullptr>
basic_value(std::pair<T, detail::region> parse_result, std::vector<std::string> com)
: basic_value(std::move(parse_result.first),
std::move(parse_result.second),
std::move(com))
{}
// type checking and casting ============================================
template<typename T, typename std::enable_if<
detail::is_exact_toml_type<T, value_type>::value,
std::nullptr_t>::type = nullptr>
bool is() const noexcept
{
return detail::type_to_enum<T, value_type>::value == this->type_;
}
bool is(value_t t) const noexcept {return t == this->type_;}
bool is_uninitialized() const noexcept {return this->is(value_t::empty );}
bool is_boolean() const noexcept {return this->is(value_t::boolean );}
bool is_integer() const noexcept {return this->is(value_t::integer );}
bool is_floating() const noexcept {return this->is(value_t::floating );}
bool is_string() const noexcept {return this->is(value_t::string );}
bool is_offset_datetime() const noexcept {return this->is(value_t::offset_datetime);}
bool is_local_datetime() const noexcept {return this->is(value_t::local_datetime );}
bool is_local_date() const noexcept {return this->is(value_t::local_date );}
bool is_local_time() const noexcept {return this->is(value_t::local_time );}
bool is_array() const noexcept {return this->is(value_t::array );}
bool is_table() const noexcept {return this->is(value_t::table );}
value_t type() const noexcept {return type_;}
template<value_t T>
typename detail::enum_to_type<T, value_type>::type& cast() &
{
if(this->type_ != T)
{
detail::throw_bad_cast<T>("toml::value::cast: ", this->type_, *this);
}
return detail::switch_cast<T>::invoke(*this);
}
template<value_t T>
typename detail::enum_to_type<T, value_type>::type const& cast() const&
{
if(this->type_ != T)
{
detail::throw_bad_cast<T>("toml::value::cast: ", this->type_, *this);
}
return detail::switch_cast<T>::invoke(*this);
}
template<value_t T>
typename detail::enum_to_type<T, value_type>::type&& cast() &&
{
if(this->type_ != T)
{
detail::throw_bad_cast<T>("toml::value::cast: ", this->type_, *this);
}
return detail::switch_cast<T>::invoke(std::move(*this));
}
// ------------------------------------------------------------------------
// nothrow version
boolean const& as_boolean (const std::nothrow_t&) const& noexcept {return this->boolean_;}
integer const& as_integer (const std::nothrow_t&) const& noexcept {return this->integer_;}
floating const& as_floating (const std::nothrow_t&) const& noexcept {return this->floating_;}
string const& as_string (const std::nothrow_t&) const& noexcept {return this->string_;}
offset_datetime const& as_offset_datetime(const std::nothrow_t&) const& noexcept {return this->offset_datetime_;}
local_datetime const& as_local_datetime (const std::nothrow_t&) const& noexcept {return this->local_datetime_;}
local_date const& as_local_date (const std::nothrow_t&) const& noexcept {return this->local_date_;}
local_time const& as_local_time (const std::nothrow_t&) const& noexcept {return this->local_time_;}
array_type const& as_array (const std::nothrow_t&) const& noexcept {return this->array_.value();}
table_type const& as_table (const std::nothrow_t&) const& noexcept {return this->table_.value();}
boolean & as_boolean (const std::nothrow_t&) & noexcept {return this->boolean_;}
integer & as_integer (const std::nothrow_t&) & noexcept {return this->integer_;}
floating & as_floating (const std::nothrow_t&) & noexcept {return this->floating_;}
string & as_string (const std::nothrow_t&) & noexcept {return this->string_;}
offset_datetime& as_offset_datetime(const std::nothrow_t&) & noexcept {return this->offset_datetime_;}
local_datetime & as_local_datetime (const std::nothrow_t&) & noexcept {return this->local_datetime_;}
local_date & as_local_date (const std::nothrow_t&) & noexcept {return this->local_date_;}
local_time & as_local_time (const std::nothrow_t&) & noexcept {return this->local_time_;}
array_type & as_array (const std::nothrow_t&) & noexcept {return this->array_.value();}
table_type & as_table (const std::nothrow_t&) & noexcept {return this->table_.value();}
boolean && as_boolean (const std::nothrow_t&) && noexcept {return std::move(this->boolean_);}
integer && as_integer (const std::nothrow_t&) && noexcept {return std::move(this->integer_);}
floating && as_floating (const std::nothrow_t&) && noexcept {return std::move(this->floating_);}
string && as_string (const std::nothrow_t&) && noexcept {return std::move(this->string_);}
offset_datetime&& as_offset_datetime(const std::nothrow_t&) && noexcept {return std::move(this->offset_datetime_);}
local_datetime && as_local_datetime (const std::nothrow_t&) && noexcept {return std::move(this->local_datetime_);}
local_date && as_local_date (const std::nothrow_t&) && noexcept {return std::move(this->local_date_);}
local_time && as_local_time (const std::nothrow_t&) && noexcept {return std::move(this->local_time_);}
array_type && as_array (const std::nothrow_t&) && noexcept {return std::move(this->array_.value());}
table_type && as_table (const std::nothrow_t&) && noexcept {return std::move(this->table_.value());}
// ========================================================================
// throw version
// ------------------------------------------------------------------------
// const reference {{{
boolean const& as_boolean() const&
{
if(this->type_ != value_t::boolean)
{
detail::throw_bad_cast<value_t::boolean>(
"toml::value::as_boolean(): ", this->type_, *this);
}
return this->boolean_;
}
integer const& as_integer() const&
{
if(this->type_ != value_t::integer)
{
detail::throw_bad_cast<value_t::integer>(
"toml::value::as_integer(): ", this->type_, *this);
}
return this->integer_;
}
floating const& as_floating() const&
{
if(this->type_ != value_t::floating)
{
detail::throw_bad_cast<value_t::floating>(
"toml::value::as_floating(): ", this->type_, *this);
}
return this->floating_;
}
string const& as_string() const&
{
if(this->type_ != value_t::string)
{
detail::throw_bad_cast<value_t::string>(
"toml::value::as_string(): ", this->type_, *this);
}
return this->string_;
}
offset_datetime const& as_offset_datetime() const&
{
if(this->type_ != value_t::offset_datetime)
{
detail::throw_bad_cast<value_t::offset_datetime>(
"toml::value::as_offset_datetime(): ", this->type_, *this);
}
return this->offset_datetime_;
}
local_datetime const& as_local_datetime() const&
{
if(this->type_ != value_t::local_datetime)
{
detail::throw_bad_cast<value_t::local_datetime>(
"toml::value::as_local_datetime(): ", this->type_, *this);
}
return this->local_datetime_;
}
local_date const& as_local_date() const&
{
if(this->type_ != value_t::local_date)
{
detail::throw_bad_cast<value_t::local_date>(
"toml::value::as_local_date(): ", this->type_, *this);
}
return this->local_date_;
}
local_time const& as_local_time() const&
{
if(this->type_ != value_t::local_time)
{
detail::throw_bad_cast<value_t::local_time>(
"toml::value::as_local_time(): ", this->type_, *this);
}
return this->local_time_;
}
array_type const& as_array() const&
{
if(this->type_ != value_t::array)
{
detail::throw_bad_cast<value_t::array>(
"toml::value::as_array(): ", this->type_, *this);
}
return this->array_.value();
}
table_type const& as_table() const&
{
if(this->type_ != value_t::table)
{
detail::throw_bad_cast<value_t::table>(
"toml::value::as_table(): ", this->type_, *this);
}
return this->table_.value();
}
// }}}
// ------------------------------------------------------------------------
// nonconst reference {{{
boolean & as_boolean() &
{
if(this->type_ != value_t::boolean)
{
detail::throw_bad_cast<value_t::boolean>(
"toml::value::as_boolean(): ", this->type_, *this);
}
return this->boolean_;
}
integer & as_integer() &
{
if(this->type_ != value_t::integer)
{
detail::throw_bad_cast<value_t::integer>(
"toml::value::as_integer(): ", this->type_, *this);
}
return this->integer_;
}
floating & as_floating() &
{
if(this->type_ != value_t::floating)
{
detail::throw_bad_cast<value_t::floating>(
"toml::value::as_floating(): ", this->type_, *this);
}
return this->floating_;
}
string & as_string() &
{
if(this->type_ != value_t::string)
{
detail::throw_bad_cast<value_t::string>(
"toml::value::as_string(): ", this->type_, *this);
}
return this->string_;
}
offset_datetime & as_offset_datetime() &
{
if(this->type_ != value_t::offset_datetime)
{
detail::throw_bad_cast<value_t::offset_datetime>(
"toml::value::as_offset_datetime(): ", this->type_, *this);
}
return this->offset_datetime_;
}
local_datetime & as_local_datetime() &
{
if(this->type_ != value_t::local_datetime)
{
detail::throw_bad_cast<value_t::local_datetime>(
"toml::value::as_local_datetime(): ", this->type_, *this);
}
return this->local_datetime_;
}
local_date & as_local_date() &
{
if(this->type_ != value_t::local_date)
{
detail::throw_bad_cast<value_t::local_date>(
"toml::value::as_local_date(): ", this->type_, *this);
}
return this->local_date_;
}
local_time & as_local_time() &
{
if(this->type_ != value_t::local_time)
{
detail::throw_bad_cast<value_t::local_time>(
"toml::value::as_local_time(): ", this->type_, *this);
}
return this->local_time_;
}
array_type & as_array() &
{
if(this->type_ != value_t::array)
{
detail::throw_bad_cast<value_t::array>(
"toml::value::as_array(): ", this->type_, *this);
}
return this->array_.value();
}
table_type & as_table() &
{
if(this->type_ != value_t::table)
{
detail::throw_bad_cast<value_t::table>(
"toml::value::as_table(): ", this->type_, *this);
}
return this->table_.value();
}
// }}}
// ------------------------------------------------------------------------
// rvalue reference {{{
boolean && as_boolean() &&
{
if(this->type_ != value_t::boolean)
{
detail::throw_bad_cast<value_t::boolean>(
"toml::value::as_boolean(): ", this->type_, *this);
}
return std::move(this->boolean_);
}
integer && as_integer() &&
{
if(this->type_ != value_t::integer)
{
detail::throw_bad_cast<value_t::integer>(
"toml::value::as_integer(): ", this->type_, *this);
}
return std::move(this->integer_);
}
floating && as_floating() &&
{
if(this->type_ != value_t::floating)
{
detail::throw_bad_cast<value_t::floating>(
"toml::value::as_floating(): ", this->type_, *this);
}
return std::move(this->floating_);
}
string && as_string() &&
{
if(this->type_ != value_t::string)
{
detail::throw_bad_cast<value_t::string>(
"toml::value::as_string(): ", this->type_, *this);
}
return std::move(this->string_);
}
offset_datetime && as_offset_datetime() &&
{
if(this->type_ != value_t::offset_datetime)
{
detail::throw_bad_cast<value_t::offset_datetime>(
"toml::value::as_offset_datetime(): ", this->type_, *this);
}
return std::move(this->offset_datetime_);
}
local_datetime && as_local_datetime() &&
{
if(this->type_ != value_t::local_datetime)
{
detail::throw_bad_cast<value_t::local_datetime>(
"toml::value::as_local_datetime(): ", this->type_, *this);
}
return std::move(this->local_datetime_);
}
local_date && as_local_date() &&
{
if(this->type_ != value_t::local_date)
{
detail::throw_bad_cast<value_t::local_date>(
"toml::value::as_local_date(): ", this->type_, *this);
}
return std::move(this->local_date_);
}
local_time && as_local_time() &&
{
if(this->type_ != value_t::local_time)
{
detail::throw_bad_cast<value_t::local_time>(
"toml::value::as_local_time(): ", this->type_, *this);
}
return std::move(this->local_time_);
}
array_type && as_array() &&
{
if(this->type_ != value_t::array)
{
detail::throw_bad_cast<value_t::array>(
"toml::value::as_array(): ", this->type_, *this);
}
return std::move(this->array_.value());
}
table_type && as_table() &&
{
if(this->type_ != value_t::table)
{
detail::throw_bad_cast<value_t::table>(
"toml::value::as_table(): ", this->type_, *this);
}
return std::move(this->table_.value());
}
// }}}
// accessors =============================================================
//
// may throw type_error or out_of_range
//
value_type& at(const key& k)
{
if(!this->is_table())
{
detail::throw_bad_cast<value_t::table>(
"toml::value::at(key): ", this->type_, *this);
}
if(this->as_table(std::nothrow).count(k) == 0)
{
detail::throw_key_not_found_error(*this, k);
}
return this->as_table(std::nothrow).at(k);
}
value_type const& at(const key& k) const
{
if(!this->is_table())
{
detail::throw_bad_cast<value_t::table>(
"toml::value::at(key): ", this->type_, *this);
}
if(this->as_table(std::nothrow).count(k) == 0)
{
detail::throw_key_not_found_error(*this, k);
}
return this->as_table(std::nothrow).at(k);
}
value_type& operator[](const key& k)
{
if(this->is_uninitialized())
{
*this = table_type{};
}
else if(!this->is_table()) // initialized, but not a table
{
detail::throw_bad_cast<value_t::table>(
"toml::value::operator[](key): ", this->type_, *this);
}
return this->as_table(std::nothrow)[k];
}
value_type& at(const std::size_t idx)
{
if(!this->is_array())
{
detail::throw_bad_cast<value_t::array>(
"toml::value::at(idx): ", this->type_, *this);
}
if(this->as_array(std::nothrow).size() <= idx)
{
throw std::out_of_range(detail::format_underline(
"toml::value::at(idx): no element corresponding to the index", {
{this->location(), concat_to_string("the length is ",
this->as_array(std::nothrow).size(),
", and the specified index is ", idx)}
}));
}
return this->as_array().at(idx);
}
value_type const& at(const std::size_t idx) const
{
if(!this->is_array())
{
detail::throw_bad_cast<value_t::array>(
"toml::value::at(idx): ", this->type_, *this);
}
if(this->as_array(std::nothrow).size() <= idx)
{
throw std::out_of_range(detail::format_underline(
"toml::value::at(idx): no element corresponding to the index", {
{this->location(), concat_to_string("the length is ",
this->as_array(std::nothrow).size(),
", and the specified index is ", idx)}
}));
}
return this->as_array(std::nothrow).at(idx);
}
value_type& operator[](const std::size_t idx) noexcept
{
// no check...
return this->as_array(std::nothrow)[idx];
}
value_type const& operator[](const std::size_t idx) const noexcept
{
// no check...
return this->as_array(std::nothrow)[idx];
}
void push_back(const value_type& x)
{
if(!this->is_array())
{
detail::throw_bad_cast<value_t::array>(
"toml::value::push_back(value): ", this->type_, *this);
}
this->as_array(std::nothrow).push_back(x);
return;
}
void push_back(value_type&& x)
{
if(!this->is_array())
{
detail::throw_bad_cast<value_t::array>(
"toml::value::push_back(value): ", this->type_, *this);
}
this->as_array(std::nothrow).push_back(std::move(x));
return;
}
template<typename ... Ts>
value_type& emplace_back(Ts&& ... args)
{
if(!this->is_array())
{
detail::throw_bad_cast<value_t::array>(
"toml::value::emplace_back(...): ", this->type_, *this);
}
this->as_array(std::nothrow).emplace_back(std::forward<Ts>(args) ...);
return this->as_array(std::nothrow).back();
}
std::size_t size() const
{
switch(this->type_)
{
case value_t::array:
{
return this->as_array(std::nothrow).size();
}
case value_t::table:
{
return this->as_table(std::nothrow).size();
}
case value_t::string:
{
return this->as_string(std::nothrow).str.size();
}
default:
{
throw type_error(detail::format_underline(
"toml::value::size(): bad_cast to container types", {
{this->location(),
concat_to_string("the actual type is ", this->type_)}
}), this->location());
}
}
}
std::size_t count(const key_type& k) const
{
if(!this->is_table())
{
detail::throw_bad_cast<value_t::table>(
"toml::value::count(key): ", this->type_, *this);
}
return this->as_table(std::nothrow).count(k);
}
bool contains(const key_type& k) const
{
if(!this->is_table())
{
detail::throw_bad_cast<value_t::table>(
"toml::value::contains(key): ", this->type_, *this);
}
return (this->as_table(std::nothrow).count(k) != 0);
}
source_location location() const
{
return source_location(this->region_info_.get());
}
comment_type const& comments() const noexcept {return this->comments_;}
comment_type& comments() noexcept {return this->comments_;}
private:
void cleanup() noexcept
{
switch(this->type_)
{
case value_t::string : {string_.~string(); return;}
case value_t::array : {array_.~array_storage(); return;}
case value_t::table : {table_.~table_storage(); return;}
default : return;
}
}
// for error messages
template<typename Value>
friend region_base const* detail::get_region(const Value& v);
template<typename Value>
friend void detail::change_region(Value& v, detail::region reg);
private:
using array_storage = detail::storage<array_type>;
using table_storage = detail::storage<table_type>;
value_t type_;
union
{
boolean boolean_;
integer integer_;
floating floating_;
string string_;
offset_datetime offset_datetime_;
local_datetime local_datetime_;
local_date local_date_;
local_time local_time_;
array_storage array_;
table_storage table_;
};
std::shared_ptr<region_base> region_info_;
comment_type comments_;
};
// default toml::value and default array/table.
// TOML11_DEFAULT_COMMENT_STRATEGY is defined in comments.hpp
using value = basic_value<TOML11_DEFAULT_COMMENT_STRATEGY, std::unordered_map, std::vector>;
using array = typename value::array_type;
using table = typename value::table_type;
template<typename C, template<typename ...> class T, template<typename ...> class A>
inline bool
operator==(const basic_value<C, T, A>& lhs, const basic_value<C, T, A>& rhs)
{
if(lhs.type() != rhs.type()) {return false;}
if(lhs.comments() != rhs.comments()) {return false;}
switch(lhs.type())
{
case value_t::boolean :
{
return lhs.as_boolean() == rhs.as_boolean();
}
case value_t::integer :
{
return lhs.as_integer() == rhs.as_integer();
}
case value_t::floating :
{
return lhs.as_floating() == rhs.as_floating();
}
case value_t::string :
{
return lhs.as_string() == rhs.as_string();
}
case value_t::offset_datetime:
{
return lhs.as_offset_datetime() == rhs.as_offset_datetime();
}
case value_t::local_datetime:
{
return lhs.as_local_datetime() == rhs.as_local_datetime();
}
case value_t::local_date:
{
return lhs.as_local_date() == rhs.as_local_date();
}
case value_t::local_time:
{
return lhs.as_local_time() == rhs.as_local_time();
}
case value_t::array :
{
return lhs.as_array() == rhs.as_array();
}
case value_t::table :
{
return lhs.as_table() == rhs.as_table();
}
case value_t::empty : {return true; }
default: {return false;}
}
}
template<typename C, template<typename ...> class T, template<typename ...> class A>
inline bool operator!=(const basic_value<C, T, A>& lhs, const basic_value<C, T, A>& rhs)
{
return !(lhs == rhs);
}
template<typename C, template<typename ...> class T, template<typename ...> class A>
typename std::enable_if<detail::conjunction<
detail::is_comparable<typename basic_value<C, T, A>::array_type>,
detail::is_comparable<typename basic_value<C, T, A>::table_type>
>::value, bool>::type
operator<(const basic_value<C, T, A>& lhs, const basic_value<C, T, A>& rhs)
{
if(lhs.type() != rhs.type()){return (lhs.type() < rhs.type());}
switch(lhs.type())
{
case value_t::boolean :
{
return lhs.as_boolean() < rhs.as_boolean() ||
(lhs.as_boolean() == rhs.as_boolean() &&
lhs.comments() < rhs.comments());
}
case value_t::integer :
{
return lhs.as_integer() < rhs.as_integer() ||
(lhs.as_integer() == rhs.as_integer() &&
lhs.comments() < rhs.comments());
}
case value_t::floating :
{
return lhs.as_floating() < rhs.as_floating() ||
(lhs.as_floating() == rhs.as_floating() &&
lhs.comments() < rhs.comments());
}
case value_t::string :
{
return lhs.as_string() < rhs.as_string() ||
(lhs.as_string() == rhs.as_string() &&
lhs.comments() < rhs.comments());
}
case value_t::offset_datetime:
{
return lhs.as_offset_datetime() < rhs.as_offset_datetime() ||
(lhs.as_offset_datetime() == rhs.as_offset_datetime() &&
lhs.comments() < rhs.comments());
}
case value_t::local_datetime:
{
return lhs.as_local_datetime() < rhs.as_local_datetime() ||
(lhs.as_local_datetime() == rhs.as_local_datetime() &&
lhs.comments() < rhs.comments());
}
case value_t::local_date:
{
return lhs.as_local_date() < rhs.as_local_date() ||
(lhs.as_local_date() == rhs.as_local_date() &&
lhs.comments() < rhs.comments());
}
case value_t::local_time:
{
return lhs.as_local_time() < rhs.as_local_time() ||
(lhs.as_local_time() == rhs.as_local_time() &&
lhs.comments() < rhs.comments());
}
case value_t::array :
{
return lhs.as_array() < rhs.as_array() ||
(lhs.as_array() == rhs.as_array() &&
lhs.comments() < rhs.comments());
}
case value_t::table :
{
return lhs.as_table() < rhs.as_table() ||
(lhs.as_table() == rhs.as_table() &&
lhs.comments() < rhs.comments());
}
case value_t::empty :
{
return lhs.comments() < rhs.comments();
}
default:
{
return lhs.comments() < rhs.comments();
}
}
}
template<typename C, template<typename ...> class T, template<typename ...> class A>
typename std::enable_if<detail::conjunction<
detail::is_comparable<typename basic_value<C, T, A>::array_type>,
detail::is_comparable<typename basic_value<C, T, A>::table_type>
>::value, bool>::type
operator<=(const basic_value<C, T, A>& lhs, const basic_value<C, T, A>& rhs)
{
return (lhs < rhs) || (lhs == rhs);
}
template<typename C, template<typename ...> class T, template<typename ...> class A>
typename std::enable_if<detail::conjunction<
detail::is_comparable<typename basic_value<C, T, A>::array_type>,
detail::is_comparable<typename basic_value<C, T, A>::table_type>
>::value, bool>::type
operator>(const basic_value<C, T, A>& lhs, const basic_value<C, T, A>& rhs)
{
return !(lhs <= rhs);
}
template<typename C, template<typename ...> class T, template<typename ...> class A>
typename std::enable_if<detail::conjunction<
detail::is_comparable<typename basic_value<C, T, A>::array_type>,
detail::is_comparable<typename basic_value<C, T, A>::table_type>
>::value, bool>::type
operator>=(const basic_value<C, T, A>& lhs, const basic_value<C, T, A>& rhs)
{
return !(lhs < rhs);
}
template<typename C, template<typename ...> class T, template<typename ...> class A>
inline std::string format_error(const std::string& err_msg,
const basic_value<C, T, A>& v, const std::string& comment,
std::vector<std::string> hints = {},
const bool colorize = TOML11_ERROR_MESSAGE_COLORIZED)
{
return detail::format_underline(err_msg, {{v.location(), comment}},
std::move(hints), colorize);
}
template<typename C, template<typename ...> class T, template<typename ...> class A>
inline std::string format_error(const std::string& err_msg,
const toml::basic_value<C, T, A>& v1, const std::string& comment1,
const toml::basic_value<C, T, A>& v2, const std::string& comment2,
std::vector<std::string> hints = {},
const bool colorize = TOML11_ERROR_MESSAGE_COLORIZED)
{
return detail::format_underline(err_msg, {
{v1.location(), comment1}, {v2.location(), comment2}
}, std::move(hints), colorize);
}
template<typename C, template<typename ...> class T, template<typename ...> class A>
inline std::string format_error(const std::string& err_msg,
const toml::basic_value<C, T, A>& v1, const std::string& comment1,
const toml::basic_value<C, T, A>& v2, const std::string& comment2,
const toml::basic_value<C, T, A>& v3, const std::string& comment3,
std::vector<std::string> hints = {},
const bool colorize = TOML11_ERROR_MESSAGE_COLORIZED)
{
return detail::format_underline(err_msg, {{v1.location(), comment1},
{v2.location(), comment2}, {v3.location(), comment3}
}, std::move(hints), colorize);
}
template<typename Visitor, typename C,
template<typename ...> class T, template<typename ...> class A>
detail::return_type_of_t<Visitor, const toml::boolean&>
visit(Visitor&& visitor, const toml::basic_value<C, T, A>& v)
{
switch(v.type())
{
case value_t::boolean : {return visitor(v.as_boolean ());}
case value_t::integer : {return visitor(v.as_integer ());}
case value_t::floating : {return visitor(v.as_floating ());}
case value_t::string : {return visitor(v.as_string ());}
case value_t::offset_datetime: {return visitor(v.as_offset_datetime());}
case value_t::local_datetime : {return visitor(v.as_local_datetime ());}
case value_t::local_date : {return visitor(v.as_local_date ());}
case value_t::local_time : {return visitor(v.as_local_time ());}
case value_t::array : {return visitor(v.as_array ());}
case value_t::table : {return visitor(v.as_table ());}
case value_t::empty : break;
default: break;
}
throw std::runtime_error(format_error("[error] toml::visit: toml::basic_value "
"does not have any valid basic_value.", v, "here"));
}
template<typename Visitor, typename C,
template<typename ...> class T, template<typename ...> class A>
detail::return_type_of_t<Visitor, toml::boolean&>
visit(Visitor&& visitor, toml::basic_value<C, T, A>& v)
{
switch(v.type())
{
case value_t::boolean : {return visitor(v.as_boolean ());}
case value_t::integer : {return visitor(v.as_integer ());}
case value_t::floating : {return visitor(v.as_floating ());}
case value_t::string : {return visitor(v.as_string ());}
case value_t::offset_datetime: {return visitor(v.as_offset_datetime());}
case value_t::local_datetime : {return visitor(v.as_local_datetime ());}
case value_t::local_date : {return visitor(v.as_local_date ());}
case value_t::local_time : {return visitor(v.as_local_time ());}
case value_t::array : {return visitor(v.as_array ());}
case value_t::table : {return visitor(v.as_table ());}
case value_t::empty : break;
default: break;
}
throw std::runtime_error(format_error("[error] toml::visit: toml::basic_value "
"does not have any valid basic_value.", v, "here"));
}
template<typename Visitor, typename C,
template<typename ...> class T, template<typename ...> class A>
detail::return_type_of_t<Visitor, toml::boolean&&>
visit(Visitor&& visitor, toml::basic_value<C, T, A>&& v)
{
switch(v.type())
{
case value_t::boolean : {return visitor(std::move(v.as_boolean ()));}
case value_t::integer : {return visitor(std::move(v.as_integer ()));}
case value_t::floating : {return visitor(std::move(v.as_floating ()));}
case value_t::string : {return visitor(std::move(v.as_string ()));}
case value_t::offset_datetime: {return visitor(std::move(v.as_offset_datetime()));}
case value_t::local_datetime : {return visitor(std::move(v.as_local_datetime ()));}
case value_t::local_date : {return visitor(std::move(v.as_local_date ()));}
case value_t::local_time : {return visitor(std::move(v.as_local_time ()));}
case value_t::array : {return visitor(std::move(v.as_array ()));}
case value_t::table : {return visitor(std::move(v.as_table ()));}
case value_t::empty : break;
default: break;
}
throw std::runtime_error(format_error("[error] toml::visit: toml::basic_value "
"does not have any valid basic_value.", v, "here"));
}
}// toml
#endif// TOML11_VALUE