785 lines
26 KiB
C++
785 lines
26 KiB
C++
// Formatting library for C++ - format string compilation
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//
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// Copyright (c) 2012 - present, Victor Zverovich and fmt contributors
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// All rights reserved.
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//
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// For the license information refer to format.h.
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#ifndef FMT_PREPARE_H_
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#define FMT_PREPARE_H_
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#ifndef FMT_HAS_CONSTRUCTIBLE_TRAITS
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# define FMT_HAS_CONSTRUCTIBLE_TRAITS \
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(FMT_GCC_VERSION >= 407 || FMT_CLANG_VERSION || FMT_MSC_VER)
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#endif
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#include "format.h"
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#include <vector>
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FMT_BEGIN_NAMESPACE
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template <typename Char> struct format_part {
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public:
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struct named_argument_id {
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FMT_CONSTEXPR named_argument_id(internal::string_view_metadata id)
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: id(id) {}
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internal::string_view_metadata id;
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};
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struct argument_id {
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FMT_CONSTEXPR argument_id() : argument_id(0u) {}
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FMT_CONSTEXPR argument_id(unsigned id)
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: which(which_arg_id::index), val(id) {}
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FMT_CONSTEXPR argument_id(internal::string_view_metadata id)
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: which(which_arg_id::named_index), val(id) {}
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enum class which_arg_id { index, named_index };
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which_arg_id which;
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FMT_UNRESTRICTED_UNION value {
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FMT_CONSTEXPR value() : index(0u) {}
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FMT_CONSTEXPR value(unsigned id) : index(id) {}
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FMT_CONSTEXPR value(internal::string_view_metadata id)
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: named_index(id) {}
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unsigned index;
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internal::string_view_metadata named_index;
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}
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val;
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};
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struct specification {
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FMT_CONSTEXPR specification() : arg_id(0u) {}
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FMT_CONSTEXPR specification(unsigned id) : arg_id(id) {}
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FMT_CONSTEXPR specification(internal::string_view_metadata id)
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: arg_id(id) {}
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argument_id arg_id;
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internal::dynamic_format_specs<Char> parsed_specs;
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};
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FMT_CONSTEXPR format_part()
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: which(which_value::argument_id), end_of_argument_id(0u), val(0u) {}
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FMT_CONSTEXPR format_part(internal::string_view_metadata text)
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: which(which_value::text), end_of_argument_id(0u), val(text) {}
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FMT_CONSTEXPR format_part(unsigned id)
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: which(which_value::argument_id), end_of_argument_id(0u), val(id) {}
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FMT_CONSTEXPR format_part(named_argument_id arg_id)
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: which(which_value::named_argument_id),
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end_of_argument_id(0u),
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val(arg_id) {}
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FMT_CONSTEXPR format_part(specification spec)
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: which(which_value::specification), end_of_argument_id(0u), val(spec) {}
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enum class which_value {
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argument_id,
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named_argument_id,
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text,
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specification
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};
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which_value which;
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std::size_t end_of_argument_id;
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FMT_UNRESTRICTED_UNION value {
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FMT_CONSTEXPR value() : arg_id(0u) {}
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FMT_CONSTEXPR value(unsigned id) : arg_id(id) {}
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FMT_CONSTEXPR value(named_argument_id named_id)
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: named_arg_id(named_id.id) {}
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FMT_CONSTEXPR value(internal::string_view_metadata t) : text(t) {}
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FMT_CONSTEXPR value(specification s) : spec(s) {}
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unsigned arg_id;
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internal::string_view_metadata named_arg_id;
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internal::string_view_metadata text;
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specification spec;
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}
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val;
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};
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namespace internal {
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template <typename Char, typename PartsContainer>
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class format_preparation_handler : public internal::error_handler {
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private:
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typedef format_part<Char> part;
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public:
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typedef internal::null_terminating_iterator<Char> iterator;
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FMT_CONSTEXPR format_preparation_handler(basic_string_view<Char> format,
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PartsContainer& parts)
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: parts_(parts), format_(format), parse_context_(format) {}
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FMT_CONSTEXPR void on_text(const Char* begin, const Char* end) {
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if (begin == end) {
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return;
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}
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const auto offset = begin - format_.data();
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const auto size = end - begin;
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parts_.add(part(string_view_metadata(offset, size)));
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}
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FMT_CONSTEXPR void on_arg_id() {
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parts_.add(part(parse_context_.next_arg_id()));
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}
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FMT_CONSTEXPR void on_arg_id(unsigned id) {
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parse_context_.check_arg_id(id);
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parts_.add(part(id));
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}
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FMT_CONSTEXPR void on_arg_id(basic_string_view<Char> id) {
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const auto view = string_view_metadata(format_, id);
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const auto arg_id = typename part::named_argument_id(view);
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parts_.add(part(arg_id));
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}
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FMT_CONSTEXPR void on_replacement_field(const Char* ptr) {
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auto last_part = parts_.last();
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last_part.end_of_argument_id = ptr - format_.begin();
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parts_.substitute_last(last_part);
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}
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FMT_CONSTEXPR const Char* on_format_specs(const Char* begin,
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const Char* end) {
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const auto specs_offset = to_unsigned(begin - format_.begin());
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typedef basic_parse_context<Char> parse_context;
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internal::dynamic_format_specs<Char> parsed_specs;
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dynamic_specs_handler<parse_context> handler(parsed_specs, parse_context_);
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begin = parse_format_specs(begin, end, handler);
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if (*begin != '}') {
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on_error("missing '}' in format string");
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}
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const auto last_part = parts_.last();
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auto specs = last_part.which == part::which_value::argument_id
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? typename part::specification(last_part.val.arg_id)
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: typename part::specification(last_part.val.named_arg_id);
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specs.parsed_specs = parsed_specs;
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auto new_part = part(specs);
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new_part.end_of_argument_id = specs_offset;
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parts_.substitute_last(new_part);
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return begin;
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}
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private:
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PartsContainer& parts_;
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basic_string_view<Char> format_;
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basic_parse_context<Char> parse_context_;
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};
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template <typename Format, typename PreparedPartsProvider, typename... Args>
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class prepared_format {
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public:
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typedef FMT_CHAR(Format) char_type;
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typedef format_part<char_type> format_part_t;
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prepared_format(Format f)
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: format_(std::move(f)), parts_provider_(to_string_view(format_)) {}
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prepared_format() = delete;
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std::size_t formatted_size(const Args&... args) const {
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const auto it = this->format_to(counting_iterator<char_type>(), args...);
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return it.count();
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}
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template <typename OutputIt,
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FMT_ENABLE_IF(internal::is_output_iterator<OutputIt>::value)>
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inline format_to_n_result<OutputIt> format_to_n(OutputIt out, unsigned n,
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const Args&... args) const {
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format_arg_store<typename format_to_n_context<OutputIt, char_type>::type,
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Args...>
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as(args...);
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typedef truncating_iterator<OutputIt> trunc_it;
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typedef output_range<trunc_it, char_type> range;
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range r(trunc_it(out, n));
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auto it = this->vformat_to(
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r, typename format_to_n_args<OutputIt, char_type>::type(as));
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return {it.base(), it.count()};
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}
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std::basic_string<char_type> format(const Args&... args) const {
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basic_memory_buffer<char_type> buffer;
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typedef back_insert_range<internal::buffer<char_type>> range;
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this->vformat_to(range(buffer), make_args_checked(format_, args...));
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return to_string(buffer);
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}
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template <typename Container, FMT_ENABLE_IF(is_contiguous<Container>::value)>
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inline std::back_insert_iterator<Container> format_to(
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std::back_insert_iterator<Container> out, const Args&... args) const {
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internal::container_buffer<Container> buffer(internal::get_container(out));
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typedef back_insert_range<internal::buffer<char_type>> range;
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this->vformat_to(range(buffer), make_args_checked(format_, args...));
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return out;
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}
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template <typename OutputIt>
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inline OutputIt format_to(OutputIt out, const Args&... args) const {
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typedef typename format_context_t<OutputIt, char_type>::type context;
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typedef output_range<OutputIt, char_type> range;
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format_arg_store<context, Args...> as(args...);
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return this->vformat_to(range(out), basic_format_args<context>(as));
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}
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template <std::size_t SIZE = inline_buffer_size>
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inline typename buffer_context<char_type>::type::iterator format_to(
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basic_memory_buffer<char_type, SIZE>& buf, const Args&... args) const {
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typedef back_insert_range<internal::buffer<char_type>> range;
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return this->vformat_to(range(buf), make_args_checked(format_, args...));
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}
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private:
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typedef typename buffer_context<char_type>::type context;
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template <typename Range>
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typename context::iterator vformat_to(Range out,
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basic_format_args<context> args) const {
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const auto format_view = internal::to_string_view(format_);
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basic_parse_context<char_type> parse_ctx(format_view);
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context ctx(out.begin(), args);
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const auto& parts = parts_provider_.parts();
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for (auto part_it = parts.begin(); part_it != parts.end(); ++part_it) {
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const auto& part = *part_it;
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const auto& value = part.val;
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switch (part.which) {
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case format_part_t::which_value::text: {
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const auto text = value.text.to_view(format_view);
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auto output = ctx.out();
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auto&& it = internal::reserve(output, text.size());
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it = std::copy_n(text.begin(), text.size(), it);
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ctx.advance_to(output);
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} break;
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case format_part_t::which_value::argument_id: {
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advance_parse_context_to_specification(parse_ctx, part);
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format_arg<Range>(parse_ctx, ctx, value.arg_id);
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} break;
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case format_part_t::which_value::named_argument_id: {
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advance_parse_context_to_specification(parse_ctx, part);
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const auto named_arg_id = value.named_arg_id.to_view(format_view);
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format_arg<Range>(parse_ctx, ctx, named_arg_id);
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} break;
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case format_part_t::which_value::specification: {
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const auto& arg_id_value = value.spec.arg_id.val;
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const auto arg =
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value.spec.arg_id.which ==
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format_part_t::argument_id::which_arg_id::index
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? ctx.arg(arg_id_value.index)
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: ctx.arg(arg_id_value.named_index.to_view(format_));
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auto specs = value.spec.parsed_specs;
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handle_dynamic_spec<internal::width_checker>(
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specs.width_, specs.width_ref, ctx, format_view.begin());
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handle_dynamic_spec<internal::precision_checker>(
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specs.precision, specs.precision_ref, ctx, format_view.begin());
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check_prepared_specs(specs, arg.type());
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advance_parse_context_to_specification(parse_ctx, part);
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ctx.advance_to(
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visit_format_arg(arg_formatter<Range>(ctx, FMT_NULL, &specs), arg));
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} break;
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}
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}
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return ctx.out();
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}
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void advance_parse_context_to_specification(
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basic_parse_context<char_type>& parse_ctx,
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const format_part_t& part) const {
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const auto view = to_string_view(format_);
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const auto specification_begin = view.data() + part.end_of_argument_id;
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parse_ctx.advance_to(specification_begin);
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}
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template <typename Range, typename Context, typename Id>
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void format_arg(basic_parse_context<char_type>& parse_ctx, Context& ctx,
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Id arg_id) const {
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parse_ctx.check_arg_id(arg_id);
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const auto stopped_at =
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visit_format_arg(arg_formatter<Range>(ctx), ctx.arg(arg_id));
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ctx.advance_to(stopped_at);
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}
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template <typename Char>
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void check_prepared_specs(const basic_format_specs<Char>& specs,
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internal::type arg_type) const {
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internal::error_handler h;
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numeric_specs_checker<internal::error_handler> checker(h, arg_type);
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if (specs.align_ == ALIGN_NUMERIC) {
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checker.require_numeric_argument();
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}
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if (specs.has(PLUS_FLAG | MINUS_FLAG | SIGN_FLAG)) {
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checker.check_sign();
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}
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if (specs.has(HASH_FLAG)) {
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checker.require_numeric_argument();
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}
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if (specs.has_precision()) {
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checker.check_precision();
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}
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}
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private:
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Format format_;
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PreparedPartsProvider parts_provider_;
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};
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template <typename Format> class compiletime_prepared_parts_type_provider {
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private:
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typedef FMT_CHAR(Format) char_type;
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class count_handler {
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private:
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typedef internal::null_terminating_iterator<char_type> iterator;
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public:
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FMT_CONSTEXPR count_handler() : counter_(0u) {}
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FMT_CONSTEXPR void on_text(const char_type* begin, const char_type* end) {
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if (begin != end) {
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++counter_;
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}
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}
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FMT_CONSTEXPR void on_arg_id() { ++counter_; }
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FMT_CONSTEXPR void on_arg_id(unsigned) { ++counter_; }
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FMT_CONSTEXPR void on_arg_id(basic_string_view<char_type>) { ++counter_; }
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FMT_CONSTEXPR void on_replacement_field(const char_type*) {}
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FMT_CONSTEXPR const char_type* on_format_specs(const char_type* begin,
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const char_type* end) {
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return find_matching_brace(begin, end);
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}
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FMT_CONSTEXPR void on_error(const char*) {}
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FMT_CONSTEXPR unsigned result() const { return counter_; }
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private:
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FMT_CONSTEXPR const char_type* find_matching_brace(const char_type* begin,
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const char_type* end) {
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unsigned braces_counter{0u};
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for (; begin != end; ++begin) {
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if (*begin == '{') {
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++braces_counter;
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} else if (*begin == '}') {
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if (braces_counter == 0u) {
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break;
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}
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--braces_counter;
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}
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}
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return begin;
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}
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private:
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unsigned counter_;
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};
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static FMT_CONSTEXPR unsigned count_parts() {
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FMT_CONSTEXPR_DECL const auto text = to_string_view(Format{});
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count_handler handler;
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internal::parse_format_string</*IS_CONSTEXPR=*/true>(text, handler);
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return handler.result();
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}
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// Workaround for old compilers. Compiletime parts preparation will not be
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// performed with them anyway.
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#if FMT_USE_CONSTEXPR
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static FMT_CONSTEXPR_DECL const unsigned number_of_format_parts =
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compiletime_prepared_parts_type_provider::count_parts();
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#else
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static const unsigned number_of_format_parts = 0u;
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#endif
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public:
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template <unsigned N> struct format_parts_array {
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typedef format_part<char_type> value_type;
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FMT_CONSTEXPR format_parts_array() : arr{} {}
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FMT_CONSTEXPR value_type& operator[](unsigned ind) { return arr[ind]; }
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FMT_CONSTEXPR const value_type* begin() const { return arr; }
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FMT_CONSTEXPR const value_type* end() const { return begin() + N; }
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private:
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value_type arr[N];
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};
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struct empty {
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// Parts preparator will search for it
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typedef format_part<char_type> value_type;
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};
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typedef typename std::conditional<static_cast<bool>(number_of_format_parts),
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format_parts_array<number_of_format_parts>,
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empty>::type type;
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};
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template <typename Parts> class compiletime_prepared_parts_collector {
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private:
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typedef typename Parts::value_type format_part;
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public:
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FMT_CONSTEXPR explicit compiletime_prepared_parts_collector(Parts& parts)
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: parts_{parts}, counter_{0u} {}
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FMT_CONSTEXPR void add(format_part part) { parts_[counter_++] = part; }
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FMT_CONSTEXPR void substitute_last(format_part part) {
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parts_[counter_ - 1] = part;
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}
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FMT_CONSTEXPR format_part last() { return parts_[counter_ - 1]; }
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private:
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Parts& parts_;
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unsigned counter_;
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};
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template <typename PartsContainer, typename Char>
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FMT_CONSTEXPR PartsContainer prepare_parts(basic_string_view<Char> format) {
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PartsContainer parts;
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internal::parse_format_string</*IS_CONSTEXPR=*/false>(
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format, format_preparation_handler<Char, PartsContainer>(format, parts));
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return parts;
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}
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template <typename PartsContainer, typename Char>
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FMT_CONSTEXPR PartsContainer
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prepare_compiletime_parts(basic_string_view<Char> format) {
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typedef compiletime_prepared_parts_collector<PartsContainer> collector;
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PartsContainer parts;
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collector c(parts);
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internal::parse_format_string</*IS_CONSTEXPR=*/true>(
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format, format_preparation_handler<Char, collector>(format, c));
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return parts;
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}
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template <typename PartsContainer> class runtime_parts_provider {
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public:
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runtime_parts_provider() = delete;
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template <typename Char>
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runtime_parts_provider(basic_string_view<Char> format)
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: parts_(prepare_parts<PartsContainer>(format)) {}
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const PartsContainer& parts() const { return parts_; }
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private:
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PartsContainer parts_;
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};
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template <typename Format, typename PartsContainer>
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struct compiletime_parts_provider {
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compiletime_parts_provider() = delete;
|
|
template <typename Char>
|
|
FMT_CONSTEXPR compiletime_parts_provider(basic_string_view<Char>) {}
|
|
|
|
const PartsContainer& parts() const {
|
|
static FMT_CONSTEXPR_DECL const PartsContainer prepared_parts =
|
|
prepare_compiletime_parts<PartsContainer>(
|
|
internal::to_string_view(Format{}));
|
|
|
|
return prepared_parts;
|
|
}
|
|
};
|
|
|
|
template <typename PartsContainer>
|
|
struct parts_container_concept_check : std::true_type {
|
|
#if FMT_HAS_CONSTRUCTIBLE_TRAITS
|
|
static_assert(std::is_copy_constructible<PartsContainer>::value,
|
|
"PartsContainer is not copy constructible");
|
|
static_assert(std::is_move_constructible<PartsContainer>::value,
|
|
"PartsContainer is not move constructible");
|
|
#endif
|
|
|
|
template <typename T, typename = void>
|
|
struct has_format_part_type : std::false_type {};
|
|
template <typename T>
|
|
struct has_format_part_type<
|
|
T, typename void_<typename T::format_part_type>::type> : std::true_type {
|
|
};
|
|
|
|
static_assert(has_format_part_type<PartsContainer>::value,
|
|
"PartsContainer doesn't provide format_part_type typedef");
|
|
|
|
struct check_second {};
|
|
struct check_first : check_second {};
|
|
|
|
template <typename T> static std::false_type has_add_check(check_second);
|
|
template <typename T>
|
|
static decltype(
|
|
(void)declval<T>().add(declval<typename T::format_part_type>()),
|
|
std::true_type()) has_add_check(check_first);
|
|
typedef decltype(has_add_check<PartsContainer>(check_first())) has_add;
|
|
static_assert(has_add::value, "PartsContainer doesn't provide add() method");
|
|
|
|
template <typename T> static std::false_type has_last_check(check_second);
|
|
template <typename T>
|
|
static decltype((void)declval<T>().last(),
|
|
std::true_type()) has_last_check(check_first);
|
|
typedef decltype(has_last_check<PartsContainer>(check_first())) has_last;
|
|
static_assert(has_last::value,
|
|
"PartsContainer doesn't provide last() method");
|
|
|
|
template <typename T>
|
|
static std::false_type has_substitute_last_check(check_second);
|
|
template <typename T>
|
|
static decltype((void)declval<T>().substitute_last(
|
|
declval<typename T::format_part_type>()),
|
|
std::true_type()) has_substitute_last_check(check_first);
|
|
typedef decltype(has_substitute_last_check<PartsContainer>(
|
|
check_first())) has_substitute_last;
|
|
static_assert(has_substitute_last::value,
|
|
"PartsContainer doesn't provide substitute_last() method");
|
|
|
|
template <typename T> static std::false_type has_begin_check(check_second);
|
|
template <typename T>
|
|
static decltype((void)declval<T>().begin(),
|
|
std::true_type()) has_begin_check(check_first);
|
|
typedef decltype(has_begin_check<PartsContainer>(check_first())) has_begin;
|
|
static_assert(has_begin::value,
|
|
"PartsContainer doesn't provide begin() method");
|
|
|
|
template <typename T> static std::false_type has_end_check(check_second);
|
|
template <typename T>
|
|
static decltype((void)declval<T>().end(),
|
|
std::true_type()) has_end_check(check_first);
|
|
typedef decltype(has_end_check<PartsContainer>(check_first())) has_end;
|
|
static_assert(has_end::value, "PartsContainer doesn't provide end() method");
|
|
};
|
|
|
|
template <bool IS_CONSTEXPR, typename Format, typename /*PartsContainer*/>
|
|
struct parts_provider_type {
|
|
typedef compiletime_parts_provider<
|
|
Format, typename compiletime_prepared_parts_type_provider<Format>::type>
|
|
type;
|
|
};
|
|
|
|
template <typename Format, typename PartsContainer>
|
|
struct parts_provider_type</*IS_CONSTEXPR=*/false, Format, PartsContainer> {
|
|
static_assert(parts_container_concept_check<PartsContainer>::value,
|
|
"Parts container doesn't meet the concept");
|
|
typedef runtime_parts_provider<PartsContainer> type;
|
|
};
|
|
|
|
template <typename Format, typename PreparedPartsContainer, typename... Args>
|
|
struct basic_prepared_format {
|
|
typedef internal::prepared_format<Format,
|
|
typename internal::parts_provider_type<
|
|
is_compile_string<Format>::value,
|
|
Format, PreparedPartsContainer>::type,
|
|
Args...>
|
|
type;
|
|
};
|
|
|
|
template <typename Char>
|
|
std::basic_string<Char> to_runtime_format(basic_string_view<Char> format) {
|
|
return std::basic_string<Char>(format.begin(), format.size());
|
|
}
|
|
|
|
template <typename Char>
|
|
std::basic_string<Char> to_runtime_format(const Char* format) {
|
|
return std::basic_string<Char>(format);
|
|
}
|
|
|
|
template <typename Char, typename Container = std::vector<format_part<Char>>>
|
|
class parts_container {
|
|
public:
|
|
typedef format_part<Char> format_part_type;
|
|
|
|
void add(format_part_type part) { parts_.push_back(std::move(part)); }
|
|
|
|
void substitute_last(format_part_type part) {
|
|
parts_.back() = std::move(part);
|
|
}
|
|
|
|
format_part_type last() { return parts_.back(); }
|
|
|
|
auto begin() -> decltype(internal::declval<Container>().begin()) {
|
|
return parts_.begin();
|
|
}
|
|
|
|
auto begin() const -> decltype(internal::declval<const Container>().begin()) {
|
|
return parts_.begin();
|
|
}
|
|
|
|
auto end() -> decltype(internal::declval<Container>().end()) {
|
|
return parts_.end();
|
|
}
|
|
|
|
auto end() const -> decltype(internal::declval<const Container>().end()) {
|
|
return parts_.end();
|
|
}
|
|
|
|
private:
|
|
Container parts_;
|
|
};
|
|
|
|
// Delegate preparing to preparator, to take advantage of a partial
|
|
// specialization.
|
|
template <typename Format, typename... Args> struct preparator {
|
|
typedef parts_container<FMT_CHAR(Format)> container;
|
|
typedef typename basic_prepared_format<Format, container, Args...>::type
|
|
prepared_format_type;
|
|
|
|
static auto prepare(Format format) -> prepared_format_type {
|
|
return prepared_format_type(std::move(format));
|
|
}
|
|
};
|
|
|
|
template <typename PassedFormat, typename PreparedFormatFormat,
|
|
typename PartsContainer, typename... Args>
|
|
struct preparator<PassedFormat, prepared_format<PreparedFormatFormat,
|
|
PartsContainer, Args...>> {
|
|
typedef prepared_format<PreparedFormatFormat, PartsContainer, Args...>
|
|
prepared_format_type;
|
|
|
|
static auto prepare(PassedFormat format) -> prepared_format_type {
|
|
return prepared_format_type(std::move(format));
|
|
}
|
|
};
|
|
|
|
struct compiletime_format_tag {};
|
|
struct runtime_format_tag {};
|
|
|
|
template <typename Format> struct format_tag {
|
|
typedef typename std::conditional<is_compile_string<Format>::value,
|
|
compiletime_format_tag,
|
|
runtime_format_tag>::type type;
|
|
};
|
|
|
|
#if FMT_USE_CONSTEXPR
|
|
template <typename Format, typename... Args>
|
|
auto do_prepare(runtime_format_tag, Format format) {
|
|
return preparator<Format, Args...>::prepare(std::move(format));
|
|
}
|
|
|
|
template <typename Format, typename... Args>
|
|
FMT_CONSTEXPR auto do_prepare(compiletime_format_tag, const Format& format) {
|
|
return typename basic_prepared_format<Format, void, Args...>::type(format);
|
|
}
|
|
#else
|
|
template <typename Format, typename... Args>
|
|
auto do_prepare(const Format& format)
|
|
-> decltype(preparator<Format, Args...>::prepare(format)) {
|
|
return preparator<Format, Args...>::prepare(format);
|
|
}
|
|
#endif
|
|
} // namespace internal
|
|
|
|
template <typename Char, typename Container = std::vector<format_part<Char>>>
|
|
struct parts_container {
|
|
typedef internal::parts_container<Char, Container> type;
|
|
};
|
|
|
|
template <typename Format, typename PartsContainer, typename... Args>
|
|
struct basic_prepared_format {
|
|
typedef typename internal::basic_prepared_format<Format, PartsContainer,
|
|
Args...>::type type;
|
|
};
|
|
|
|
template <typename... Args> struct prepared_format {
|
|
typedef typename basic_prepared_format<
|
|
std::string, typename parts_container<char>::type, Args...>::type type;
|
|
};
|
|
|
|
template <typename... Args> struct wprepared_format {
|
|
typedef
|
|
typename basic_prepared_format<std::wstring,
|
|
typename parts_container<wchar_t>::type,
|
|
Args...>::type type;
|
|
};
|
|
|
|
#if FMT_USE_ALIAS_TEMPLATES
|
|
|
|
template <typename Char, typename Container = std::vector<format_part<Char>>>
|
|
using parts_container_t = typename parts_container<Char, Container>::type;
|
|
|
|
template <typename Format, typename PreparedPartsContainer, typename... Args>
|
|
using basic_prepared_format_t =
|
|
typename basic_prepared_format<Format, PreparedPartsContainer,
|
|
Args...>::type;
|
|
|
|
template <typename... Args>
|
|
using prepared_format_t =
|
|
basic_prepared_format_t<std::string, parts_container<char>, Args...>;
|
|
|
|
template <typename... Args>
|
|
using wprepared_format_t =
|
|
basic_prepared_format_t<std::wstring, parts_container<wchar_t>, Args...>;
|
|
|
|
#endif
|
|
|
|
#if FMT_USE_CONSTEXPR
|
|
|
|
template <typename... Args, typename Format>
|
|
FMT_CONSTEXPR auto prepare(Format format) {
|
|
return internal::do_prepare<Format, Args...>(
|
|
typename internal::format_tag<Format>::type{}, std::move(format));
|
|
}
|
|
#else
|
|
|
|
template <typename... Args, typename Format>
|
|
auto prepare(Format format) ->
|
|
typename internal::preparator<Format, Args...>::prepared_format_type {
|
|
return internal::preparator<Format, Args...>::prepare(std::move(format));
|
|
}
|
|
#endif
|
|
|
|
template <typename... Args, typename Char>
|
|
auto prepare(const Char* format) ->
|
|
typename internal::preparator<std::basic_string<Char>,
|
|
Args...>::prepared_format_type {
|
|
return prepare<Args...>(internal::to_runtime_format(format));
|
|
}
|
|
|
|
template <typename... Args, typename Char, unsigned N>
|
|
auto prepare(const Char(format)[N]) ->
|
|
typename internal::preparator<std::basic_string<Char>,
|
|
Args...>::prepared_format_type {
|
|
const auto view = basic_string_view<Char>(format, N);
|
|
return prepare<Args...>(internal::to_runtime_format(view));
|
|
}
|
|
|
|
template <typename... Args, typename Char>
|
|
auto prepare(basic_string_view<Char> format) ->
|
|
typename internal::preparator<std::basic_string<Char>,
|
|
Args...>::prepared_format_type {
|
|
return prepare<Args...>(internal::to_runtime_format(format));
|
|
}
|
|
|
|
FMT_END_NAMESPACE
|
|
|
|
#endif // FMT_PREPARE_H_
|