/* $Id$
This file is part of libmspdatafile
-Copyright © 2006 Mikko Rasa, Mikkosoft Productions
+Copyright © 2006-2008 Mikko Rasa, Mikkosoft Productions
Distributed under the LGPL
*/
#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"
LoaderFunc0(FuncType f): func(f) { }
void execute(Loader &l, const Statement &st) const
{
- if(st.args.size()!=0) throw TypeError(st.get_location()+": Wrong number of arguments");
+ if(st.args.size()!=0) throw TypeError("Wrong number of arguments");
(dynamic_cast<L &>(l).*func)();
};
private:
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");
+ if(st.args.size()!=1) throw TypeError("Wrong number of arguments");
(dynamic_cast<L &>(l).*func)(st.args[0].get<A0>());
}
private:
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");
+ 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:
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");
+ 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:
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");
+ 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:
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");
+ 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:
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");
+ 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:
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");
+ 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>());
}
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");
+ 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>();
}
*/
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;
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)
+void load(T &obj, const std::string &fn, U &arg)
{
- 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, arg);
loader.load(parser);
}