X-Git-Url: http://git.tdb.fi/?p=libs%2Fdatafile.git;a=blobdiff_plain;f=source%2Floader.h;h=574ecce0c11b5bac9af56d82b6a0782a5288d8b6;hp=bb1292cc7b3c2740adc14a6c596bde54c4a59678;hb=9c95942d24a92abea14bb9e11d33daae2d017321;hpb=2d289d20a9a4aeac7774976e4213a7c72f1dc75b

diff --git a/source/loader.h b/source/loader.h
index bb1292c..574ecce 100644
--- a/source/loader.h
+++ b/source/loader.h
@@ -4,6 +4,7 @@
 #include <map>
 #include <msp/io/file.h>
 #include "loaderaction.h"
+#include "meta.h"
 #include "parser.h"
 #include "statement.h"
 
@@ -32,21 +33,30 @@ destructor.
 
 See also classes ObjectLoader and CollectionObjectLoader in objectloader.h.
 */
-class Loader
+class Loader: private NonCopyable
 {
-private:
-	typedef std::map<StatementKey, LoaderAction *> ActionMap;
+protected:
+	class ActionMap: public std::map<StatementKey, LoaderAction *>, private NonCopyable
+	{
+	public:
+		~ActionMap();
+	};
 
-	ActionMap actions;
+private:
+	ActionMap local_actions;
+	ActionMap *actions;
+	Parser *cur_parser;
+	unsigned cur_level;
 	const Statement *cur_st;
 	bool sub_loaded;
-	std::list<Loader *> aux_loaders;
+	bool direct;
+	std::vector<Loader *> aux_loaders;
 protected:
 	bool check_sub_loads;
 
 	Loader();
 public:
-	virtual ~Loader();
+	virtual ~Loader() { }
 
 	/** Loads statements from a parser. */
 	void load(Parser &p);
@@ -55,6 +65,9 @@ private:
 	/** Loads data from a statement. */
 	void load(const Statement &st);
 
+	/** Loads statemsnts from a parser, feeding them directly to actions. */
+	void load_direct(Parser &, unsigned);
+
 	/** Processes a single statement */
 	void load_statement(const Statement &st);
 
@@ -81,6 +94,11 @@ protected:
 	/** Processes the current statement's substatements with another Loader. */
 	void load_sub_with(Loader &);
 
+	/** Sets the actions to be used when loading.  If the map is empty,
+	init_actions will be called. */
+	void set_actions(ActionMap &);
+	virtual void init_actions() { }
+
 	/** Adds a keyword that is loaded by calling a function. */
 	template<typename L>
 	void add(const std::string &k, void (L::*func)())
@@ -90,21 +108,15 @@ protected:
 	void add(const std::string &k, void (L::*func)(A0))
 	{ 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))
-	{ 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))
-	{ 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))
-	{ add(k, new LoaderFunc4<L, A0, A1, A2, A3>(func)); }
+	template<typename L, typename... Args>
+	void add(const std::string &k, void (L::*func)(Args...))
+	{ add(k, new LoaderFuncN<L, Args...>(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 by calling a function with a bound
+	first argument. */
+	template<typename L, typename B0, typename... Args>
+	void add(const std::string &k, void (L::*func)(B0, Args...), const typename RemoveReference<B0>::Type &b0)
+	{ add(k, new LoaderFuncNBound1<L, B0, Args...>(func, b0)); }
 
 	/** Adds a keyword that is loaded into a member of the loaded object. */
 	template<typename L, typename T0>
@@ -135,30 +147,58 @@ protected:
 	source may not necessarily be a file. */
 	const std::string &get_source() const;
 
+	/** Returns the keyword of the statement being processed.  Can be used to
+	implement dynamic keywords. */
+	const std::string &get_keyword() const;
+
 	virtual void finish() { }
 };
 
 
 /**
-Loads an object from a file.  The object must have a public Loader class.
+Loads an object from a file.  The object must have a public Loader class.  Any
+extra arguments are passed to the Loader constructor.
 */
-template<typename T>
-void load(T &obj, const std::string &fn)
+template<typename T, typename... Args>
+void load(T &obj, const std::string &fn, Args &... args)
 {
 	IO::BufferedFile in(fn);
 
 	Parser parser(in, fn);
-	typename T::Loader loader(obj);
+	typename T::Loader loader(obj, args...);
+	loader.load(parser);
+}
+
+/**
+Loads an object from a file stored in a collection.  The object must have a
+public Loader class.  The collection is passed to the Loader constructor,
+followed by any extra arguments.
+*/
+template<typename T, typename... Args>
+void load(T &obj, typename T::Loader::Collection &coll, const std::string &fn, Args &... args)
+{
+	RefPtr<IO::Seekable> in = coll.open_raw(fn);
+	if(!in)
+		throw IO::file_not_found(fn);
+
+	Parser parser(*in, fn);
+	typename T::Loader loader(obj, coll, args...);
 	loader.load(parser);
 }
 
-template<typename T, typename U>
-void load(T &obj, const std::string &fn, U &arg)
+/**
+Loads an object from a file stored in a collection.  The object must havea
+public Loader class.  Any extra arguments are passed to the Loader constructor.
+*/
+template<typename T, typename C, typename... Args>
+typename EnableIf<NeedsCollection<typename T::Loader>::value, void>::No load(T &obj, C &coll, const std::string &fn, Args &... args)
 {
-	IO::BufferedFile in(fn);
+	RefPtr<IO::Seekable> in = coll.open_raw(fn);
+	if(!in)
+		throw IO::file_not_found(fn);
 
-	Parser parser(in, fn);
-	typename T::Loader loader(obj, arg);
+	Parser parser(*in, fn);
+	typename T::Loader loader(obj, args...);
 	loader.load(parser);
 }