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Changed the way we read different types of scalars.

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It's better organized now, I think - nodes only offer a single main way of getting the fundamental scalar (as a string), and now we can specialize a single template to read specific types.
This commit is contained in:
jbeder
2009-05-23 23:51:01 +00:00
parent 0c34137d84
commit 51457eece9
12 changed files with 158 additions and 270 deletions
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27
include/node.h
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@@ -7,6 +7,7 @@
#include "parserstate.h"
#include "exceptions.h"
#include "iterator.h"
#include "conversion.h"
namespace YAML
{
@@ -37,18 +38,11 @@ namespace YAML
unsigned size() const;
// extraction of scalars
bool Read(std::string& s) const;
bool Read(int& i) const;
bool Read(unsigned& u) const;
bool Read(long& l) const;
bool Read(float& f) const;
bool Read(double& d) const;
bool Read(char& c) const;
bool Read(bool& b) const;
bool GetScalar(std::string& s) const;
// so you can specialize for other values
// we can specialize this for other values
template <typename T>
friend bool Read(const Node& node, T& value);
bool Read(T& value) const;
template <typename T>
friend void operator >> (const Node& node, T& value);
@@ -100,15 +94,18 @@ namespace YAML
// templated things we need to keep inline in the header
template <typename T>
inline bool Read(const Node& node, T& value)
{
return node.Read(value);
inline bool Node::Read(T& value) const {
std::string scalar;
if(!GetScalar(scalar))
return false;
return Convert(scalar, value);
}
template <typename T>
inline void operator >> (const Node& node, T& value)
{
if(!Read(node, value))
if(!node.Read(value))
throw InvalidScalar(node.m_line, node.m_column);
}
@@ -120,7 +117,7 @@ namespace YAML
for(Iterator it=begin();it!=end();++it) {
T t;
if(YAML::Read(it.first(), t)) {
if(it.first().Read(t)) {
if(key == t)
return it.second();
}