X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fargumentstore.h;fp=source%2Fargumentstore.h;h=c2d5d76f3dbb473c613840c7f92dd9320fa07d5b;hb=3b78eeb8b92dc3524d6a0456b4daf0a0f3dbf813;hp=0000000000000000000000000000000000000000;hpb=a82776d980239e48d2b509d33b56e77a1ea44dda;p=libs%2Fdatafile.git

diff --git a/source/argumentstore.h b/source/argumentstore.h
new file mode 100644
index 0000000..c2d5d76
--- /dev/null
+++ b/source/argumentstore.h
@@ -0,0 +1,56 @@
+#ifndef MSP_DATAFILE_ARGUMENTSTORE_H_
+#define MSP_DATAFILE_ARGUMENTSTORE_H_
+
+#include "statement.h"
+
+namespace Msp {
+namespace DataFile {
+
+class ArgumentStore
+{
+private:
+	const StatementInfo &info;
+	char *store;
+
+public:
+	ArgumentStore(const StatementInfo &);
+	~ArgumentStore();
+
+	const StatementInfo &get_info() const { return info; }
+
+	template<typename T>
+	void set(unsigned i, const T &v)
+	{
+		*reinterpret_cast<typename TypeInfo<T>::Store *>(store+info.arg_offsets[i]) = v;
+	}
+
+	template<typename T>
+	typename TypeInfo<T>::Load get(unsigned i) const
+	{
+		return extract<typename TypeInfo<T>::Store>(store+info.arg_offsets[i], info.key.signature[i]);
+	}
+
+private:
+	template<typename T>
+	T extract(const char *, char) const;
+};
+
+template<typename T>
+inline T ArgumentStore::extract(const char *p, char) const
+{
+	return *reinterpret_cast<const T *>(p);
+}
+
+template<>
+inline FloatType::Store ArgumentStore::extract<FloatType::Store>(const char *p, char s) const
+{
+	if(s==IntType::signature)
+		return *reinterpret_cast<const IntType::Store *>(p);
+	else
+		return *reinterpret_cast<const FloatType::Store *>(p);
+}
+
+} // namespace DataFile
+} // namespace Msp
+
+#endif