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Updated new API conversion to handle nan/inf and to throw when the conversion didn't use the entire string (e.g., parsing 1.2 as an integer)

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beder
2012-01-12 23:49:05 -06:00
parent 924bb8b00e
commit 60fa4d7f63
2 changed files with 53 additions and 3 deletions
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39
include/yaml-cpp/node/convert.h
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@@ -9,6 +9,7 @@
#include "yaml-cpp/node/node.h"
#include "yaml-cpp/node/iterator.h"
#include "yaml-cpp/null.h"
#include <limits>
#include <list>
#include <map>
#include <sstream>
@@ -16,6 +17,20 @@
namespace YAML
{
namespace conversion {
inline bool IsInfinity(const std::string& input) {
return input == ".inf" || input == ".Inf" || input == ".INF" || input == "+.inf" || input == "+.Inf" || input == "+.INF";
}
inline bool IsNegativeInfinity(const std::string& input) {
return input == "-.inf" || input == "-.Inf" || input == "-.INF";
}
inline bool IsNaN(const std::string& input) {
return input == ".nan" || input == ".NaN" || input == ".NAN";
}
}
// std::string
template<>
struct convert<std::string> {
@@ -54,9 +69,27 @@ namespace YAML
static bool decode(const Node& node, type& rhs) {\
if(node.Type() != NodeType::Scalar)\
return false;\
std::stringstream stream(node.Scalar());\
stream >> rhs;\
return !!stream;\
const std::string& input = node.Scalar();\
std::stringstream stream(input);\
stream.unsetf(std::ios::dec);\
if((stream >> rhs) && (stream >> std::ws).eof())\
return true;\
if(std::numeric_limits<type>::has_infinity) {\
if(conversion::IsInfinity(input)) {\
rhs = std::numeric_limits<type>::infinity();\
return true;\
} else if(conversion::IsNegativeInfinity(input)) {\
rhs = -std::numeric_limits<type>::infinity();\
return true;\
}\
}\
\
if(std::numeric_limits<type>::has_quiet_NaN && conversion::IsNaN(input)) {\
rhs = std::numeric_limits<type>::quiet_NaN();\
return true;\
}\
\
return false;\
}\
}