mirror of
https://github.com/RetroDECK/Duckstation.git
synced 2024-12-05 03:55:39 +00:00
100 lines
2.5 KiB
C++
100 lines
2.5 KiB
C++
|
#ifndef _C4_YML_PREPROCESS_HPP_
|
||
|
#define _C4_YML_PREPROCESS_HPP_
|
||
|
|
||
|
/** @file preprocess.hpp Functions for preprocessing YAML prior to parsing. */
|
||
|
|
||
|
/** @defgroup Preprocessors Preprocessor functions
|
||
|
*
|
||
|
* These are the existing preprocessors:
|
||
|
*
|
||
|
* @code{.cpp}
|
||
|
* size_t preprocess_json(csubstr json, substr buf)
|
||
|
* size_t preprocess_rxmap(csubstr json, substr buf)
|
||
|
* @endcode
|
||
|
*/
|
||
|
|
||
|
#ifndef _C4_YML_COMMON_HPP_
|
||
|
#include "./common.hpp"
|
||
|
#endif
|
||
|
#include <c4/substr.hpp>
|
||
|
|
||
|
|
||
|
namespace c4 {
|
||
|
namespace yml {
|
||
|
|
||
|
namespace detail {
|
||
|
using Preprocessor = size_t(csubstr, substr);
|
||
|
template<Preprocessor PP, class CharContainer>
|
||
|
substr preprocess_into_container(csubstr input, CharContainer *out)
|
||
|
{
|
||
|
// try to write once. the preprocessor will stop writing at the end of
|
||
|
// the container, but will process all the input to determine the
|
||
|
// required container size.
|
||
|
size_t sz = PP(input, to_substr(*out));
|
||
|
// if the container size is not enough, resize, and run again in the
|
||
|
// resized container
|
||
|
if(sz > out->size())
|
||
|
{
|
||
|
out->resize(sz);
|
||
|
sz = PP(input, to_substr(*out));
|
||
|
}
|
||
|
return to_substr(*out).first(sz);
|
||
|
}
|
||
|
} // namespace detail
|
||
|
|
||
|
|
||
|
//-----------------------------------------------------------------------------
|
||
|
|
||
|
/** @name preprocess_rxmap
|
||
|
* Convert flow-type relaxed maps (with implicit bools) into strict YAML
|
||
|
* flow map.
|
||
|
*
|
||
|
* @code{.yaml}
|
||
|
* {a, b, c, d: [e, f], g: {a, b}}
|
||
|
* # is converted into this:
|
||
|
* {a: 1, b: 1, c: 1, d: [e, f], g: {a, b}}
|
||
|
* @endcode
|
||
|
|
||
|
* @note this is NOT recursive - conversion happens only in the top-level map
|
||
|
* @param rxmap A relaxed map
|
||
|
* @param buf output buffer
|
||
|
* @param out output container
|
||
|
*/
|
||
|
|
||
|
//@{
|
||
|
|
||
|
/** Write into a given output buffer. This function is safe to call with
|
||
|
* empty or small buffers; it won't write beyond the end of the buffer.
|
||
|
*
|
||
|
* @return the number of characters required for output
|
||
|
*/
|
||
|
RYML_EXPORT size_t preprocess_rxmap(csubstr rxmap, substr buf);
|
||
|
|
||
|
|
||
|
/** Write into an existing container. It is resized to contained the output.
|
||
|
* @return a substr of the container
|
||
|
* @overload preprocess_rxmap */
|
||
|
template<class CharContainer>
|
||
|
substr preprocess_rxmap(csubstr rxmap, CharContainer *out)
|
||
|
{
|
||
|
return detail::preprocess_into_container<preprocess_rxmap>(rxmap, out);
|
||
|
}
|
||
|
|
||
|
|
||
|
/** Create a container with the result.
|
||
|
* @overload preprocess_rxmap */
|
||
|
template<class CharContainer>
|
||
|
CharContainer preprocess_rxmap(csubstr rxmap)
|
||
|
{
|
||
|
CharContainer out;
|
||
|
preprocess_rxmap(rxmap, &out);
|
||
|
return out;
|
||
|
}
|
||
|
|
||
|
//@}
|
||
|
|
||
|
} // namespace yml
|
||
|
} // namespace c4
|
||
|
|
||
|
#endif /* _C4_YML_PREPROCESS_HPP_ */
|