-/* $Id$
-
-This file is part of libmspdatafile
-Copyright © 2008, 2010 Mikko Rasa, Mikkosoft Productions
-Distributed under the LGPL
-*/
-
#ifndef MSP_DATAFILE_LOADERACTION_H_
#define MSP_DATAFILE_LOADERACTION_H_
-#include "except.h"
+#include <msp/core/meta.h>
+#include "argumentstore.h"
#include "statement.h"
namespace Msp {
namespace DataFile {
+template<typename T>
+std::string create_signature(const std::string &prefix = std::string())
+{ return prefix+std::string(1, TypeInfo<T>::signature); }
+
+template<typename T0, typename T1, typename... Tail>
+std::string create_signature(const std::string &prefix = std::string())
+{ return create_signature<T1, Tail...>(prefix+std::string(1, TypeInfo<T0>::signature)); }
+
class Loader;
/**
*/
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());
values.push_back(i->get<A0>());
(dynamic_cast<L &>(l).*func)(values);
}
-private:
- FuncType func;
+
+ 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;
+ }
};
template<typename L>
class LoaderFunc1<L, const Statement &>: public LoaderAction
{
-public:
+private:
typedef void (L::*FuncType)(const Statement &);
+ 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
{
(dynamic_cast<L &>(l).*func)(st);
}
-private:
- FuncType func;
+
+ 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
+template<unsigned I, typename... Args>
+struct Apply;
+
+template<unsigned I>
+struct Apply<I>
{
-public:
- typedef void (L::*FuncType)(A0, A1);
+ template<typename L, typename F, typename... Args>
+ static void apply(L &l, F func, const Statement &, Args... args)
+ {
+ (l.*func)(args...);
+ }
- LoaderFunc2(FuncType f): func(f) { }
- void execute(Loader &l, const Statement &st) const
+ template<typename L, typename F, typename... Args>
+ static void apply(L &l, F func, const ArgumentStore &, Args... args)
{
- 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>());
+ (l.*func)(args...);
}
-private:
- FuncType func;
};
-
-template<typename L, typename A0, typename A1, typename A2>
-class LoaderFunc3: public LoaderAction
+template<unsigned I, typename Head, typename... Tail>
+struct Apply<I, Head, Tail...>
{
-public:
- typedef void (L::*FuncType)(A0, A1, A2);
+ template<typename L, typename F, typename... Args>
+ static void apply(L &l, F func, const Statement &st, Args... args)
+ {
+ Apply<I+1, Tail...>::apply(l, func, st, args..., st.args[I].get<Head>());
+ }
- LoaderFunc3(FuncType f): func(f) { }
- void execute(Loader &l, const Statement &st) const
+ template<typename L, typename F, typename... Args>
+ static void apply(L &l, F func, const ArgumentStore &as, Args... args)
{
- 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>());
+ Apply<I+1, Tail...>::apply(l, func, as, args..., as.get<Head>(I));
}
-private:
- FuncType func;
};
-template<typename L, typename A0, typename A1, typename A2, typename A3>
-class LoaderFunc4: public LoaderAction
+template<typename L, typename... Args>
+class LoaderFuncN: public LoaderAction
{
+protected:
+ typedef void (L::*FuncType)(Args...);
+
+ FuncType func;
+
public:
- typedef void (L::*FuncType)(A0, A1, A2, A3);
+ LoaderFuncN(FuncType f): func(f) { }
- 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>());
+ Apply<0, Args...>::apply(dynamic_cast<L &>(l), func, st);
}
-private:
- FuncType func;
+
+ virtual void execute(Loader &l, const ArgumentStore &as) const
+ {
+ Apply<0, Args...>::apply(dynamic_cast<L &>(l), func, as);
+ }
+
+ virtual std::string get_signature() const
+ { return create_signature<Args...>(); }
};
-template<typename L, typename A0, typename A1, typename A2, typename A3, typename A4>
-class LoaderFunc5: public LoaderAction
+template<typename L, typename B0, typename... Args>
+class LoaderFuncNBound1: public LoaderAction
{
+protected:
+ typedef void (L::*FuncType)(B0, Args...);
+ typedef typename RemoveReference<B0>::Type Bound0Type;
+
+ FuncType func;
+ Bound0Type bound0;
+
public:
- typedef void (L::*FuncType)(A0, A1, A2, A3, A4);
+ LoaderFuncNBound1(FuncType f, const Bound0Type &b0): func(f), bound0(b0) { }
- 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>());
+ Apply<0, Args...>::apply(dynamic_cast<L &>(l), func, st, bound0);
}
-private:
- FuncType func;
+
+ virtual void execute(Loader &l, const ArgumentStore &as) const
+ {
+ Apply<0, Args...>::apply(dynamic_cast<L &>(l), func, as, bound0);
+ }
+
+ virtual std::string get_signature() const
+ { return create_signature<Args...>(); }
};
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
projects / libs / datafile.git / blobdiff