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Add support for arbitrary output iterators

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This commit is contained in:
Victor Zverovich
2018-01-15 12:46:44 -08:00
parent 1029119497
commit 322736d3bb
3 changed files with 38 additions and 23 deletions
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21
include/fmt/format.h
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@@ -2023,7 +2023,7 @@ class arg_formatter: public internal::arg_formatter_base<Range> {
\endrst
*/
arg_formatter(basic_context<Range> &ctx, format_specs &spec)
: base(Range(internal::get_container(ctx.begin())), spec), ctx_(ctx) {}
: base(Range(ctx.begin()), spec), ctx_(ctx) {}
using base::operator();
@@ -3036,6 +3036,13 @@ inline void format_to(wmemory_buffer &buf, wstring_view format_str,
vformat_to(buf, format_str, make_args<wcontext>(args...));
}
template <typename Container, typename Context>
typename std::enable_if<!is_contiguous<Container>::value>::type
vformat_to(std::back_insert_iterator<Container> out,
string_view format_str,
basic_format_args<Context> args) {
}
template <typename Container, typename... Args>
inline typename std::enable_if<is_contiguous<Container>::value>::type
format_to(std::back_insert_iterator<Container> out,
@@ -3043,15 +3050,13 @@ inline typename std::enable_if<is_contiguous<Container>::value>::type
vformat_to(out, format_str, make_args(args...));
}
template <typename Container, typename... Args>
inline typename std::enable_if<!is_contiguous<Container>::value>::type
format_to(std::back_insert_iterator<Container> out,
string_view format_str, const Args & ... args) {
using range = back_insert_range<Container>;
template <typename OutputIt, typename... Args>
inline void format_to(OutputIt out, string_view format_str,
const Args & ... args) {
using range = output_range<OutputIt, char>;
auto store = make_args<basic_context<range>>(args...);
do_vformat_to<arg_formatter<range>>(
range(internal::get_container(out)), format_str,
basic_format_args<basic_context<range>>(store));
range(out), format_str, basic_format_args<basic_context<range>>(store));
}
inline std::string vformat(string_view format_str, format_args args) {