-/**
-Loads a statement by calling a function that takes one argument.
-*/
-template<typename L, typename A0>
-class LoaderFunc1: public LoaderAction
-{
-public:
- typedef void (L::*FuncType)(A0);
-
- LoaderFunc1(FuncType f): func(f) { }
- void execute(Loader &l, const Statement &st) const
- {
- if(st.args.size()!=1) throw TypeError(st.get_location()+": Wrong number of arguments");
- (dynamic_cast<L &>(l).*func)(st.args[0].get<A0>());
- }
-private:
- FuncType func;
-};
-
-
-/**
-Loads a statement by calling a function that takes an array of values.
-*/
-template<typename L, typename A0>
-class LoaderFunc1<L, const std::vector<A0> &>: public LoaderAction
-{
-public:
- typedef void (L::*FuncType)(const std::vector<A0> &);
-
- LoaderFunc1(FuncType f): func(f) { }
- 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)
- values.push_back(i->get<A0>());
- (dynamic_cast<L &>(l).*func)(values);
- }
-private:
- FuncType func;
-};
-
-
-template<typename L, typename A0, typename A1>
-class LoaderFunc2: public LoaderAction
-{
-public:
- typedef void (L::*FuncType)(A0, A1);
-
- LoaderFunc2(FuncType f): func(f) { }
- void execute(Loader &l, const Statement &st) const
- {
- if(st.args.size()!=2) throw TypeError(st.get_location()+": Wrong number of arguments");
- (dynamic_cast<L &>(l).*func)(st.args[0].get<A0>(), st.args[1].get<A1>());
- }
-private:
- FuncType func;
-};
-
-
-template<typename L, typename A0, typename A1, typename A2>
-class LoaderFunc3: public LoaderAction
-{
-public:
- typedef void (L::*FuncType)(A0, A1, A2);
-
- LoaderFunc3(FuncType f): func(f) { }
- void execute(Loader &l, const Statement &st) const
- {
- if(st.args.size()!=3) throw TypeError(st.get_location()+": 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;
-};
-
-
-template<typename L, typename A0, typename A1, typename A2, typename A3>
-class LoaderFunc4: public LoaderAction
-{
-public:
- typedef void (L::*FuncType)(A0, A1, A2, A3);
-
- LoaderFunc4(FuncType f): func(f) { }
- void execute(Loader &l, const Statement &st) const
- {
- if(st.args.size()!=4) throw TypeError(st.get_location()+": 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;
-};
-
-
-template<typename L, typename T0>
-class LoadValue1: public LoaderAction
-{
-public:
- typedef T0 L::*Pointer0Type;
-
- LoadValue1(Pointer0Type p0): ptr0(p0) { }
- void execute(Loader &l, const Statement &st) const
- {
- if(st.args.size()!=1) throw TypeError(st.get_location()+": Wrong number of arguments");
- dynamic_cast<typename L::Loader &>(l).get_object().*ptr0=st.args[0].get<T0>();
- }
-private:
- Pointer0Type ptr0;
-};
-
-
-template<typename L, typename T0, typename T1>
-class LoadValue2: public LoaderAction
-{
-public:
- typedef T0 L::*Pointer0Type;
- typedef T1 L::*Pointer1Type;
-
- LoadValue2(Pointer0Type p0, Pointer1Type p1): ptr0(p0), ptr1(p1) { }
- void execute(Loader &l, const Statement &st) const
- {
- if(st.args.size()!=2) throw TypeError(st.get_location()+": 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>();
- }
-private:
- Pointer0Type ptr0;
- Pointer1Type ptr1;
-};
-
-
-/**
-Base class for data loaders. To enable objects of a certain class to be loaded
-from datafiles, create a public Loader class in it, derived from this class.
-Typically the Loader class contains a reference to the object being loaded. If
-you want to load data members of the object directly, the Loader class must
-have a member function get_object() returning that reference.