-/* $Id$
-
-This file is part of libmspdatafile
-Copyright © 2006-2008 Mikko Rasa, Mikkosoft Productions
-Distributed under the LGPL
-*/
-
#ifndef MSP_DATAFILE_LOADERACTION_H_
#define MSP_DATAFILE_LOADERACTION_H_
-#include "except.h"
+#include "argumentstore.h"
#include "statement.h"
namespace Msp {
*/
class LoaderAction
{
-public:
- /**
- Called when a statement is to be loaded.
- */
- virtual void execute(Loader &, const Statement &) const=0;
- virtual ~LoaderAction() { }
protected:
LoaderAction() { }
+public:
+ virtual ~LoaderAction() { }
+
+ /** Called to process a statement. */
+ virtual void execute(Loader &, const Statement &) const = 0;
+
+ virtual void execute(Loader &, const ArgumentStore &) const = 0;
+
+ virtual std::string get_signature() const = 0;
};
template<typename L>
class LoaderFunc0: public LoaderAction
{
-public:
+private:
typedef void (L::*FuncType)();
+ FuncType func;
+
+public:
LoaderFunc0(FuncType f): func(f) { }
- void execute(Loader &l, const Statement &st) const
+
+ virtual void execute(Loader &l, const Statement &) const
{
- if(st.args.size()!=0) throw TypeError("Wrong number of arguments");
(dynamic_cast<L &>(l).*func)();
};
-private:
- FuncType func;
+
+ virtual void execute(Loader &l, const ArgumentStore &) const
+ {
+ (dynamic_cast<L &>(l).*func)();
+ };
+
+ virtual std::string get_signature() const
+ { return std::string(); }
};
template<typename L, typename A0>
class LoaderFunc1: public LoaderAction
{
-public:
+private:
typedef void (L::*FuncType)(A0);
+ FuncType func;
+
+public:
LoaderFunc1(FuncType f): func(f) { }
- void execute(Loader &l, const Statement &st) const
+
+ virtual void execute(Loader &l, const Statement &st) const
{
- if(st.args.size()!=1) throw TypeError("Wrong number of arguments");
(dynamic_cast<L &>(l).*func)(st.args[0].get<A0>());
}
-private:
- FuncType func;
+
+ virtual void execute(Loader &l, const ArgumentStore &as) const
+ {
+ (dynamic_cast<L &>(l).*func)(as.get<A0>(0));
+ }
+
+ virtual std::string get_signature() const
+ { return std::string(1, TypeInfo<A0>::signature); }
};
template<typename L, typename A0>
class LoaderFunc1<L, const std::vector<A0> &>: public LoaderAction
{
-public:
+private:
typedef void (L::*FuncType)(const std::vector<A0> &);
+ FuncType func;
+
+public:
LoaderFunc1(FuncType f): func(f) { }
- void execute(Loader &l, const Statement &st) const
+
+ virtual void execute(Loader &l, const Statement &st) const
{
std::vector<A0> values;
values.reserve(st.args.size());
- for(ValueArray::const_iterator i=st.args.begin(); i!=st.args.end(); ++i)
+ for(Statement::Arguments::const_iterator i=st.args.begin(); i!=st.args.end(); ++i)
values.push_back(i->get<A0>());
(dynamic_cast<L &>(l).*func)(values);
}
+
+ virtual void execute(Loader &l, const ArgumentStore &as) const
+ {
+ std::vector<A0> values;
+ unsigned n_args = as.get_info().key.signature.size();
+ values.reserve(n_args);
+ for(unsigned i=0; i<n_args; ++i)
+ values.push_back(as.get<A0>(i));
+ (dynamic_cast<L &>(l).*func)(values);
+ }
+
+ virtual std::string get_signature() const
+ {
+ std::string result;
+ result += TypeInfo<A0>::signature;
+ result += '*';
+ return result;
+ }
+};
+
+
+/**
+Loads a statement by calling a function with the statement itself as argument.
+*/
+template<typename L>
+class LoaderFunc1<L, const Statement &>: public LoaderAction
+{
private:
+ typedef void (L::*FuncType)(const Statement &);
+
FuncType func;
+
+public:
+ LoaderFunc1(FuncType f): func(f) { }
+
+ virtual void execute(Loader &l, const Statement &st) const
+ {
+ (dynamic_cast<L &>(l).*func)(st);
+ }
+
+ virtual void execute(Loader &, const ArgumentStore &) const
+ {
+ throw std::logic_error("incompatible format");
+ }
+
+ virtual std::string get_signature() const
+ { return "*"; }
};
template<typename L, typename A0, typename A1>
class LoaderFunc2: public LoaderAction
{
-public:
+private:
typedef void (L::*FuncType)(A0, A1);
+ FuncType func;
+
+public:
LoaderFunc2(FuncType f): func(f) { }
- void execute(Loader &l, const Statement &st) const
+
+ virtual void execute(Loader &l, const Statement &st) const
{
- if(st.args.size()!=2) throw TypeError("Wrong number of arguments");
(dynamic_cast<L &>(l).*func)(st.args[0].get<A0>(), st.args[1].get<A1>());
}
-private:
- FuncType func;
+
+ virtual void execute(Loader &l, const ArgumentStore &as) const
+ {
+ (dynamic_cast<L &>(l).*func)(as.get<A0>(0), as.get<A1>(1));
+ }
+
+ virtual std::string get_signature() const
+ {
+ std::string result;
+ result += TypeInfo<A0>::signature;
+ result += TypeInfo<A1>::signature;
+ return result;
+ }
};
template<typename L, typename A0, typename A1, typename A2>
class LoaderFunc3: public LoaderAction
{
-public:
+private:
typedef void (L::*FuncType)(A0, A1, A2);
+ FuncType func;
+
+public:
LoaderFunc3(FuncType f): func(f) { }
- void execute(Loader &l, const Statement &st) const
+
+ virtual void execute(Loader &l, const Statement &st) const
{
- if(st.args.size()!=3) throw TypeError("Wrong number of arguments");
(dynamic_cast<L &>(l).*func)(st.args[0].get<A0>(), st.args[1].get<A1>(), st.args[2].get<A2>());
}
-private:
- FuncType func;
+
+ virtual void execute(Loader &l, const ArgumentStore &as) const
+ {
+ (dynamic_cast<L &>(l).*func)(as.get<A0>(0), as.get<A1>(1), as.get<A2>(2));
+ }
+
+ virtual std::string get_signature() const
+ {
+ std::string result;
+ result += TypeInfo<A0>::signature;
+ result += TypeInfo<A1>::signature;
+ result += TypeInfo<A2>::signature;
+ return result;
+ }
};
template<typename L, typename A0, typename A1, typename A2, typename A3>
class LoaderFunc4: public LoaderAction
{
-public:
+private:
typedef void (L::*FuncType)(A0, A1, A2, A3);
+ FuncType func;
+
+public:
LoaderFunc4(FuncType f): func(f) { }
- void execute(Loader &l, const Statement &st) const
+
+ virtual void execute(Loader &l, const Statement &st) const
{
- if(st.args.size()!=4) throw TypeError("Wrong number of arguments");
(dynamic_cast<L &>(l).*func)(st.args[0].get<A0>(), st.args[1].get<A1>(), st.args[2].get<A2>(), st.args[3].get<A3>());
}
-private:
- FuncType func;
+
+ virtual void execute(Loader &l, const ArgumentStore &as) const
+ {
+ (dynamic_cast<L &>(l).*func)(as.get<A0>(0), as.get<A1>(1), as.get<A2>(2), as.get<A3>(3));
+ }
+
+ virtual std::string get_signature() const
+ {
+ std::string result;
+ result += TypeInfo<A0>::signature;
+ result += TypeInfo<A1>::signature;
+ result += TypeInfo<A2>::signature;
+ result += TypeInfo<A3>::signature;
+ return result;
+ }
};
template<typename L, typename A0, typename A1, typename A2, typename A3, typename A4>
class LoaderFunc5: public LoaderAction
{
-public:
+private:
typedef void (L::*FuncType)(A0, A1, A2, A3, A4);
+ FuncType func;
+
+public:
LoaderFunc5(FuncType f): func(f) { }
- void execute(Loader &l, const Statement &st) const
+
+ virtual void execute(Loader &l, const Statement &st) const
{
- if(st.args.size()!=5) throw TypeError("Wrong number of arguments");
(dynamic_cast<L &>(l).*func)(st.args[0].get<A0>(), st.args[1].get<A1>(), st.args[2].get<A2>(), st.args[3].get<A3>(), st.args[4].get<A4>());
}
-private:
- FuncType func;
+
+ virtual void execute(Loader &l, const ArgumentStore &as) const
+ {
+ (dynamic_cast<L &>(l).*func)(as.get<A0>(0), as.get<A1>(1), as.get<A2>(2), as.get<A3>(3), as.get<A4>(4));
+ }
+
+ virtual std::string get_signature() const
+ {
+ std::string result;
+ result += TypeInfo<A0>::signature;
+ result += TypeInfo<A1>::signature;
+ result += TypeInfo<A2>::signature;
+ result += TypeInfo<A3>::signature;
+ result += TypeInfo<A4>::signature;
+ return result;
+ }
};
template<typename L, typename T0>
class LoadValue1: public LoaderAction
{
-public:
+private:
typedef T0 L::*Pointer0Type;
+ Pointer0Type ptr0;
+
+public:
LoadValue1(Pointer0Type p0): ptr0(p0) { }
- void execute(Loader &l, const Statement &st) const
+
+ virtual void execute(Loader &l, const Statement &st) const
{
- if(st.args.size()!=1) throw TypeError("Wrong number of arguments");
- dynamic_cast<typename L::Loader &>(l).get_object().*ptr0=st.args[0].get<T0>();
+ dynamic_cast<typename L::Loader &>(l).get_object().*ptr0 = st.args[0].get<T0>();
}
-private:
- Pointer0Type ptr0;
+
+ virtual void execute(Loader &l, const ArgumentStore &as) const
+ {
+ dynamic_cast<typename L::Loader &>(l).get_object().*ptr0 = as.get<T0>(0);
+ }
+
+ virtual std::string get_signature() const
+ { return std::string(1, TypeInfo<T0>::signature); }
};
template<typename L, typename T0>
class LoadValue1<L, T0 *>: public LoaderAction
{
-public:
+private:
typedef T0 *L::*Pointer0Type;
+ Pointer0Type ptr0;
+
+public:
LoadValue1(Pointer0Type p0): ptr0(p0) { }
- void execute(Loader &l, const Statement &st) const
+
+ virtual void execute(Loader &l, const Statement &st) const
{
- if(st.args.size()!=1) throw TypeError("Wrong number of arguments");
- typename L::Loader &ldr=dynamic_cast<typename L::Loader &>(l);
- ldr.get_object().*ptr0=ldr.get_collection().template get<T0>(st.args[0].get<std::string>());
+ typename L::Loader &ldr = dynamic_cast<typename L::Loader &>(l);
+ ldr.get_object().*ptr0 = &ldr.get_collection().template get<T0>(st.args[0].get<std::string>());
}
-private:
- Pointer0Type ptr0;
+
+ virtual void execute(Loader &l, const ArgumentStore &as) const
+ {
+ typename L::Loader &ldr = dynamic_cast<typename L::Loader &>(l);
+ ldr.get_object().*ptr0 = &ldr.get_collection().template get<T0>(as.get<std::string>(0));
+ }
+
+ virtual std::string get_signature() const
+ { return std::string(1, TypeInfo<std::string>::signature); }
};
template<typename L, typename T0, typename T1>
class LoadValue2: public LoaderAction
{
-public:
+private:
typedef T0 L::*Pointer0Type;
typedef T1 L::*Pointer1Type;
+ Pointer0Type ptr0;
+ Pointer1Type ptr1;
+
+public:
LoadValue2(Pointer0Type p0, Pointer1Type p1): ptr0(p0), ptr1(p1) { }
- void execute(Loader &l, const Statement &st) const
+
+ virtual void execute(Loader &l, const Statement &st) const
{
- if(st.args.size()!=2) throw TypeError("Wrong number of arguments");
- dynamic_cast<typename L::Loader &>(l).get_object().*ptr0=st.args[0].get<T0>();
- dynamic_cast<typename L::Loader &>(l).get_object().*ptr1=st.args[1].get<T1>();
+ dynamic_cast<typename L::Loader &>(l).get_object().*ptr0 = st.args[0].get<T0>();
+ dynamic_cast<typename L::Loader &>(l).get_object().*ptr1 = st.args[1].get<T1>();
+ }
+
+ virtual void execute(Loader &l, const ArgumentStore &as) const
+ {
+ dynamic_cast<typename L::Loader &>(l).get_object().*ptr0 = as.get<T0>(0);
+ dynamic_cast<typename L::Loader &>(l).get_object().*ptr1 = as.get<T1>(1);
+ }
+
+ virtual std::string get_signature() const
+ {
+ std::string result;
+ result += TypeInfo<T0>::signature;
+ result += TypeInfo<T1>::signature;
+ return result;
}
-private:
- Pointer0Type ptr0;
- Pointer1Type ptr1;
};
} // namespace DataFile