#ifndef MSP_DATAFILE_LOADER_H_
#define MSP_DATAFILE_LOADER_H_
-#include <fstream>
#include <map>
+#include <msp/io/buffered.h>
+#include <msp/io/file.h>
#include "except.h"
#include "parser.h"
#include "statement.h"
};
+template<typename L, typename A0, typename A1, typename A2, typename A3, typename A4>
+class LoaderFunc5: public LoaderAction
+{
+public:
+ typedef void (L::*FuncType)(A0, A1, A2, A3, A4);
+
+ LoaderFunc5(FuncType f): func(f) { }
+ void execute(Loader &l, const Statement &st) const
+ {
+ if(st.args.size()!=5) 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>(), st.args[4].get<A4>());
+ }
+private:
+ FuncType func;
+};
+
+
template<typename L, typename T0>
class LoadValue1: public LoaderAction
{
{
if(st.args.size()!=1) throw TypeError(st.get_location()+": 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>());
+ ldr.get_object().*ptr0=ldr.get_collection().template get<T0>(st.args[0].get<std::string>());
}
private:
Pointer0Type ptr0;
*/
template<typename L>
void add(const std::string &k, void (L::*func)())
- { actions.insert(typename ActionMap::value_type(k, new LoaderFunc0<L>(func))); }
+ { add(k, new LoaderFunc0<L>(func)); }
template<typename L, typename A0>
void add(const std::string &k, void (L::*func)(A0))
- { actions.insert(typename ActionMap::value_type(k, new LoaderFunc1<L, A0>(func))); }
+ { add(k, new LoaderFunc1<L, A0>(func)); }
template<typename L, typename A0, typename A1>
void add(const std::string &k, void (L::*func)(A0, A1))
- { actions.insert(typename ActionMap::value_type(k, new LoaderFunc2<L, A0, A1>(func))); }
+ { add(k, new LoaderFunc2<L, A0, A1>(func)); }
template<typename L, typename A0, typename A1, typename A2>
void add(const std::string &k, void (L::*func)(A0, A1, A2))
- { actions.insert(typename ActionMap::value_type(k, new LoaderFunc3<L, A0, A1, A2>(func))); }
+ { add(k, new LoaderFunc3<L, A0, A1, A2>(func)); }
template<typename L, typename A0, typename A1, typename A2, typename A3>
void add(const std::string &k, void (L::*func)(A0, A1, A2, A3))
- { actions.insert(typename ActionMap::value_type(k, new LoaderFunc4<L, A0, A1, A2, A3>(func))); }
+ { add(k, new LoaderFunc4<L, A0, A1, A2, A3>(func)); }
+
+ template<typename L, typename A0, typename A1, typename A2, typename A3, typename A4>
+ 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.
*/
template<typename L, typename T0>
void add(const std::string &k, T0 L::*p0)
- { actions.insert(typename ActionMap::value_type(k, new LoadValue1<L, T0>(p0))); }
+ { add(k, new LoadValue1<L, T0>(p0)); }
template<typename L, typename T0, typename T1>
void add(const std::string &k, T0 L::*p0, T1 L::*p1)
- { actions.insert(typename ActionMap::value_type(k, new LoadValue2<L, T0, T1>(p0, p1))); }
+ { add(k, new LoadValue2<L, T0, T1>(p0, p1)); }
/**
Adds a keyword that is recognized but ignored.
*/
void add(const std::string &k)
- { actions.insert(ActionMap::value_type(k, 0)); }
+ { add(k, 0); }
/**
Loads a sub-object from the statement being processed. The Loader class of
*/
template<typename S>
void load_sub(S &s)
- { load_sub<typename S::Loader, S>(s); }
-
- /**
- Loads a sub-object with a custom Loader class.
- */
- template<typename L, typename S>
- void load_sub(S &s)
{
- if(!cur_st)
- throw InvalidState("load_sub called without current statement");
- L loader(s);
- loader.load(*cur_st);
+ typename S::Loader ldr(s);
+ load_sub_with(ldr);
}
- template<typename S, typename T>
- void load_sub(S &s, T &p)
- { load_sub<typename S::Loader, S, T>(s, p); }
-
/**
- Loads a sub-object with a custom Loader class that takes one argument in
- addition to to object to be loaded.
+ 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 L, typename S, typename T>
+ template<typename S, typename T>
void load_sub(S &s, T &p)
{
- if(!cur_st)
- throw InvalidState("load_sub called without current statement");
- L loader(s, p);
- loader.load(*cur_st);
+ typename S::Loader ldr(s, p);
+ load_sub_with(ldr);
}
+ /**
+ Processes the current statement's substatements with another Loader.
+ */
+ void load_sub_with(Loader &);
+
/**
Returns the source of the statement being processed. This can be used to
implement relative paths in include-like statements. Note that the source
throw InvalidState("get_source called without current statement");
return cur_st->source;
}
+
+ 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);
};
template<typename T>
void load(T &obj, const std::string &fn)
{
- std::ifstream in(fn.c_str());
- if(!in)
- throw Exception("Couldn't open "+fn);
+ IO::File in(fn);
+ IO::Buffered buf(in);
- Parser parser(in, fn);
+ Parser parser(buf, fn);
typename T::Loader loader(obj);
loader.load(parser);
}
+template<typename T, typename U>
+void load(T &obj, const std::string &fn, U &arg)
+{
+ IO::File in(fn);
+ IO::Buffered buf(in);
+
+ Parser parser(in, fn);
+ typename T::Loader loader(obj, arg);
+ loader.load(parser);
+}
+
} // namespace DataFile
} // namespace Msp