class Loader
{
private:
- /**
- Loads data from a statement.
- */
- void load(const Statement &st);
+ typedef std::map<std::string, LoaderAction *> ActionMap;
+
+ ActionMap actions;
+ const Statement *cur_st;
+protected:
+ Loader(): cur_st(0) { }
public:
- /**
- Loads statements from a parser.
- */
+ virtual ~Loader();
+
+ /** Loads statements from a parser. */
void load(Parser &p);
- virtual ~Loader();
+private:
+ /** Loads data from a statement. */
+ void load(const Statement &st);
+
+ /** Processes a single statement */
+ void load_statement(const Statement &st);
+
protected:
- Loader(): cur_st(0) { }
+ /** Loads a sub-object from the statement being processed. The Loader class
+ of the sub-object is automatically used. */
+ template<typename S>
+ void load_sub(S &s)
+ {
+ typename S::Loader ldr(s);
+ load_sub_with(ldr);
+ }
+
+ /** Loads a sub-object from the statement being processed with an extra
+ parameter for the Loader. The Loader class of the sub-object is
+ automatically used. */
+ template<typename S, typename T>
+ void load_sub(S &s, T &p)
+ {
+ typename S::Loader ldr(s, p);
+ load_sub_with(ldr);
+ }
- /**
- Adds a keyword that is loaded with a zero-argument function.
- */
+ /** Processes the current statement's substatements with another Loader. */
+ void load_sub_with(Loader &);
+
+ /** Adds a keyword that is loaded by calling a function. */
template<typename L>
void add(const std::string &k, void (L::*func)())
{ add(k, new LoaderFunc0<L>(func)); }
void add(const std::string &k, void (L::*func)(A0, A1, A2, A3, A4))
{ add(k, new LoaderFunc5<L, A0, A1, A2, A3, A4>(func)); }
- /**
- Adds a keyword that is loaded into a variable of the loaded object.
- */
+ /** Adds a keyword that is loaded into a member of the loaded object. */
template<typename L, typename T0>
void add(const std::string &k, T0 L::*p0)
{ add(k, new LoadValue1<L, T0>(p0)); }
void add(const std::string &k, T0 L::*p0, T1 L::*p1)
{ add(k, new LoadValue2<L, T0, T1>(p0, p1)); }
- /**
- Adds a keyword that is recognized but ignored.
- */
+ /** Adds a keyword that is recognized but ignored. */
void add(const std::string &k)
{ add(k, 0); }
- /**
- Loads a sub-object from the statement being processed. The Loader class of
- the sub-object is automatically used.
- */
- template<typename S>
- void load_sub(S &s)
- {
- typename S::Loader ldr(s);
- load_sub_with(ldr);
- }
-
- /**
- Loads a sub-object from the statement being processed with an extra parameter
- for the Loader. The Loader class of the sub-object is automatically used.
- */
- template<typename S, typename T>
- void load_sub(S &s, T &p)
- {
- typename S::Loader ldr(s, p);
- load_sub_with(ldr);
- }
-
- /**
- Processes the current statement's substatements with another Loader.
- */
- void load_sub_with(Loader &);
+private:
+ void add(const std::string &, LoaderAction *);
- /**
- Returns the source of the statement being processed. This can be used to
- implement relative paths in include-like statements. Note that the source
- may not necessarily be a file.
- */
+protected:
+ /** Returns the source of the statement being processed. This can be used
+ to implement relative paths in include-like statements. Note that the
+ source may not necessarily be a file. */
const std::string &get_source() const
{
if(!cur_st)
}
virtual void finish() { }
-private:
- typedef std::map<std::string, LoaderAction *> ActionMap;
-
- ActionMap actions;
- const Statement *cur_st;
-
- void add(const std::string &, LoaderAction *);
- void load_statement(const Statement &st);
};
*/
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;
};
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 &st) const
{
if(st.args.size()!=0) throw TypeError("Wrong number of arguments");
(dynamic_cast<L &>(l).*func)();
};
-private:
- FuncType func;
};
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;
};
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;
};
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;
};
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;
};
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;
};
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;
};
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;
};
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>();
}
-private:
- Pointer0Type ptr0;
};
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>());
}
-private:
- Pointer0Type ptr0;
};
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>();
}
-private:
- Pointer0Type ptr0;
- Pointer1Type ptr1;
};
} // namespace DataFile