changed: now [for] statements with the same function can be nested

sample:
[for my_function]
 [for my_function]
   foo
 [end]
[end]

changed: FunInfo::iter has a value from the last [for] statement now
sample:
[for my_function]
 [other_function]
[end]

void other_function(Info &i)
{
// here i.iter is the number of iteration
// previously was always zero
}

changed: small optimization in [for]
the proper function is being looking for only once at the beginning
previously it was searched in each iteration



git-svn-id: svn://ttmath.org/publicrep/ezc/trunk@331 e52654a7-88a9-db11-a3e9-0013d4bc506e

src/functions.h

@@ -5,7 +5,7 @@
  */
 
 /* 
- * Copyright (c) 2007-2010, Tomasz Sowa
+ * Copyright (c) 2007-2011, Tomasz Sowa
  * All rights reserved.
  * 
  * Redistribution and use in source and binary forms, with or without
@@ -64,8 +64,6 @@ public:
 		UserFunction user_function; // used when type is 'function'
 		std::wstring variable;		// used when type is 'variable'
 
-		int  iter;
-		bool is_for;				// true if is used by a [for] statement
 		bool is_running;			// true if this function is currently executed
 		
 		Function();
@@ -103,8 +101,6 @@ Functions<StreamType>::Function::Function()
 {
 	type = Functions::variable;
 	user_function = 0;
-	iter = 0;
-	is_for = false;
 	is_running = false;
 }