// C++ informative line for the emacs editor: -*- C++ -*-
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Copyright by The HDF Group.                                               *
 * Copyright by the Board of Trustees of the University of Illinois.         *
 * All rights reserved.                                                      *
 *                                                                           *
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 * terms governing use, modification, and redistribution, is contained in    *
 * the files COPYING and Copyright.html.  COPYING can be found at the root   *
 * of the source code distribution tree; Copyright.html can be found at the  *
 * root level of an installed copy of the electronic HDF5 document set and   *
 * is linked from the top-level documents page.  It can also be found at     *
 * http://hdfgroup.org/HDF5/doc/Copyright.html.  If you do not have          *
 * access to either file, you may request a copy from help@hdfgroup.org.     *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

#ifndef __H5CompType_H
#define __H5CompType_H

#ifndef H5_NO_NAMESPACE
namespace H5 {
#endif

/*! \class CompType
    \brief CompType is a derivative of a DataType and operates on HDF5
    compound datatypes.
*/
class H5_DLLCPP CompType : public DataType {
   public:
	// Default constructor
	CompType();

	// Creates a compound datatype using an existing id
	CompType( const hid_t existing_id );

	// Creates a new compound datatype, given the type's size
	CompType( size_t size ); // H5Tcreate

	// Gets the compound datatype of the specified dataset
	CompType( const DataSet& dataset );  // H5Dget_type

	// Copy constructor - makes a copy of original object
	CompType( const CompType& original );

	// Returns the type class of the specified member of this compound
	// datatype.  It provides to the user a way of knowing what type
	// to create another datatype of the same class
	H5T_class_t getMemberClass( unsigned member_num ) const;

	// Returns the index of a member in this compound data type.
	int getMemberIndex(const char* name) const;
	int getMemberIndex(const H5std_string& name) const;

	// Returns the offset of a member of this compound datatype.
	size_t getMemberOffset( unsigned memb_no ) const;

	// Returns the name of a member of this compound datatype.
	H5std_string getMemberName( unsigned member_num ) const;

	// Returns the generic datatype of the specified member in
	// this compound datatype.
	DataType getMemberDataType( unsigned member_num ) const;

	// Returns the array datatype of the specified member in
	// this compound datatype.
	ArrayType getMemberArrayType( unsigned member_num ) const;

	// Returns the compound datatype of the specified member in
	// this compound datatype.
	CompType getMemberCompType( unsigned member_num ) const;

	// Returns the enumeration datatype of the specified member in
	// this compound datatype.
	EnumType getMemberEnumType( unsigned member_num ) const;

	// Returns the integer datatype of the specified member in
	// this compound datatype.
	IntType getMemberIntType( unsigned member_num ) const;

	// Returns the floating-point datatype of the specified member in
	// this compound datatype.
	FloatType getMemberFloatType( unsigned member_num ) const;

	// Returns the string datatype of the specified member in
	// this compound datatype.
	StrType getMemberStrType( unsigned member_num ) const;

	// Returns the variable length datatype of the specified member in
	// this compound datatype.
	VarLenType getMemberVarLenType( unsigned member_num ) const;

	// Returns the number of members in this compound datatype.
	int getNmembers() const;

	// Adds a new member to this compound datatype.
	void insertMember( const H5std_string& name, size_t offset, const DataType& new_member ) const;

	// Recursively removes padding from within this compound datatype.
	void pack() const;

	// Sets the total size for this compound datatype.
	void setSize(size_t size) const;

	///\brief Returns this class name.
	virtual H5std_string fromClass () const { return("CompType"); }

	// Noop destructor.
	virtual ~CompType();

   private:
	// Contains common code that is used by the member functions
	// getMemberXxxType
	hid_t p_get_member_type(unsigned member_num) const;
};
#ifndef H5_NO_NAMESPACE
}
#endif
#endif // __H5CompType_H