test005

#ifndef TYPEDVALUE_H
#define TYPEDVALUE_H

#include <Type.h>
#include <SimpleValue.h>

class TypedValue {
	const ValueType	*_type;
	SimpleValue	_simplevalue;
	SimpleValue	*_valueptr;
	unsigned int	_has_value:1;
	unsigned int	_use_valueptr:1;
	
	static ValueType	_StaticIntType;
	static ValueType	_StaticFloatType;
	static ValueType	_StaticDateType;
	static ValueType	_StaticBooleanType;
	static ValueType	_StaticStringType;
	static ValueType	_StaticTimeType;

public:
	Boolean HasValue() const {return _has_value;}
	void HasValue(Boolean flag) {_has_value = flag;}
	void ResetValue() {HasValue(FALSE);}
	void ResetValuePtr() {_use_valueptr=0; ResetValue();}

	const SimpleValue &Value() const {if(_use_valueptr) return (*_valueptr)
; else return _simplevalue;}
	SimpleValue &ValueRef() {if(_use_valueptr) return (*_valueptr); else re
turn _simplevalue;}
	void Value(SimpleValue &v) {_valueptr = &v; _use_valueptr=1; HasValue(T
RUE);}

	TypedValue() {_type = NULL; _has_value=0; _use_valueptr=0;}
	TypedValue(BaseType type);
	//TypedValue(TypedValue &);
	TypedValue(const ValueType *t) {_type = t; _has_value=0; _use_valueptr=
0;}
	TypedValue(const ValueType *t, SimpleValue *v) {_type = t; Value(*v);}
	~TypedValue();
	void DestroyValue() {}
	void Ref(TypedValue &);	// set typed value to point to another typed va
lue

	Boolean HasType() const {return _type!=NULL;}
	BaseType Type() const {return _type->Type();}
	void Type(BaseType);

	void TypePtr(const ValueType *t) {_type = t;}
	const ValueType *TypePtr() const {return _type;}
	
	Boolean operator=(const int v);
	Boolean operator=(const float v);
	Boolean operator=(const time_t v);
	Boolean operator=(const Boolean v);
	Boolean operator=(const char *s);
	Boolean operator=(const TypedValue &t);
	Boolean Assign(const char *s) {return this->operator=(s);}
	
	Boolean operator += (const TypedValue &t);
	
	boolean operator==(const TypedValue &)const;	// test equality of typ
e *and* value

	void print_type(ostream &o) const { if(_type)_type->print(o); else o <<
 "no type";}
	void print_value(ostream &o) const;

	operator int() const;
	operator float() const;
	operator Boolean() const;
	operator time_t() const;
	operator char *() const;
	operator Str() const;
	
	// when value is an array, get (and create if not created) a reference 
to the element
	// returns TRUE if the element was created, FALSE otherwise
	Boolean GetElementReference(const char *, TypedValue &result);
	
	// when value is an array, get (but don't create) a value for the eleme
nt
	// returns TRUE if value is put in result, FALSE otherwise
	Boolean GetElementValue(const char *, TypedValue &result) const;
	
	// return TRUE if element with given name exists in array
	Boolean FindElement(const char *);
	
	// when value is an array, remove element
	// returns TRUE if an element was removed, FALSE otherwise
	Boolean RemoveElement(const char *);
	
	// return number of elements in array
	long ArraySize() const;
	
	// get array indices of array value
	// returns TRUE if indices were put in array, FALSE otherwise
	Boolean GetIndices(StrArray &arr) const;

	friend ostream &operator<<(ostream &,const TypedValue &);
};

#endif