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*
*                            Open Watcom Project
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*    Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
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*    This file contains Original Code and/or Modifications of Original
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* Description:  WHEN YOU FIGURE OUT WHAT THIS FILE DOES, PLEASE
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****************************************************************************/


//
// ASGNOP    : assignment code generation routines
//

#include "ftnstd.h"
#include "fcodes.h"
#include "global.h"
#include "opn.h"

extern  void            AsgnChar(void);
extern  void            SetOpn(itnode *,int);
extern  void            EmitOp(unsigned_16);
extern  sym_id          SymRef(itnode *);
extern  void            GenTypes(itnode *,itnode *);
extern  void            PushOpn(itnode *);
extern  void            OutPtr(void *);
extern  void            OutU16(unsigned_16);


void    AsgnOp( int typ1, int typ2, int opr ) {
//=============================================

// Generate code to perform an assign operation.

    typ1 = typ1; typ2 = typ2; opr = opr;
    if( ResultType == TY_CHAR ) {
        AsgnChar();
    } else {
        EmitOp( POP );
        SymRef( CITNode );
        GenTypes( CITNode, CITNode->link );
        if( CITNode->sym_ptr->ns.typ == TY_STRUCTURE ) {
            if( CITNode->opn & OPN_SAFE ) {
                // destination is a sub-field or an array element
                OutU16( 1 );
                if( CITNode->typ == TY_STRUCTURE ) {
                    if( CITNode->opn & OPN_FLD ) {
                        // sub-field is a structure
                        OutPtr( CITNode->value.st.field_id );
                    } else {
                        // array element is a structure
                        OutPtr( NULL );
                    }
                }
            } else {
                // destination is a structure
                OutU16( 0 );
            }
        }
    }
    SetOpn( CITNode, OPN_SAFE ); // CGAssign() leaves "cg_name" on stack
}
