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emitter: Support std::string_view

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Accept Emitter::operator<<(std::string_view).

ABI remains C++11 compatible by exposing new method
Emitter::Write(const char*, size_t).

All affected calls optimized to pass std::string values as pointer + size
tuple into appropriate routines.
This commit is contained in:
Daniel Levin
2024-10-20 00:36:24 -05:00
committed by Jesse Beder
parent 8a9a7b74ef
commit 7470c2d871
9 changed files with 107 additions and 60 deletions
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15
include/yaml-cpp/emitter.h
View File

@@ -9,12 +9,17 @@
#include <cmath>
#include <cstddef>
#include <cstring>
#include <limits>
#include <memory>
#include <sstream>
#include <string>
#include <type_traits>
#if ((defined(_MSVC_LANG) && _MSVC_LANG >= 201703L) || __cplusplus >= 201703L)
#include <string_view>
#endif
#include "yaml-cpp/binary.h"
#include "yaml-cpp/dll.h"
#include "yaml-cpp/emitterdef.h"
@@ -68,6 +73,7 @@ class YAML_CPP_API Emitter {
Emitter& SetLocalPrecision(const _Precision& precision);
// overloads of write
Emitter& Write(const char* str, std::size_t size);
Emitter& Write(const std::string& str);
Emitter& Write(bool b);
Emitter& Write(char ch);
@@ -201,8 +207,13 @@ inline void Emitter::SetStreamablePrecision<double>(std::stringstream& stream) {
}
// overloads of insertion
#if ((defined(_MSVC_LANG) && _MSVC_LANG >= 201703L) || __cplusplus >= 201703L)
inline Emitter& operator<<(Emitter& emitter, const std::string_view& v) {
return emitter.Write(v.data(), v.size());
}
#endif
inline Emitter& operator<<(Emitter& emitter, const std::string& v) {
return emitter.Write(v);
return emitter.Write(v.data(), v.size());
}
inline Emitter& operator<<(Emitter& emitter, bool v) {
return emitter.Write(v);
@@ -233,7 +244,7 @@ inline Emitter& operator<<(Emitter& emitter, const Binary& b) {
}
inline Emitter& operator<<(Emitter& emitter, const char* v) {
return emitter.Write(std::string(v));
return emitter.Write(v, std::strlen(v));
}
inline Emitter& operator<<(Emitter& emitter, int v) {

4
include/yaml-cpp/null.h
View File

@@ -8,7 +8,7 @@
#endif
#include "yaml-cpp/dll.h"
#include <string>
#include <cstddef>
namespace YAML {
class Node;
@@ -18,7 +18,7 @@ inline bool operator==(const _Null&, const _Null&) { return true; }
inline bool operator!=(const _Null&, const _Null&) { return false; }
YAML_CPP_API bool IsNull(const Node& node); // old API only
YAML_CPP_API bool IsNullString(const std::string& str);
YAML_CPP_API bool IsNullString(const char* str, std::size_t size);
extern YAML_CPP_API _Null Null;
}