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getablexprsupport

NAME

getablexprsupport - gives the expression's support.

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SYNOPSYS

 #include "abl101.h"
  void *getablexprsupport( Expr, Mode )
   chain_list *Expr;
   int         Mode;
 

PARAMETERS

Expr

Expression.

Mode

The returned support's mode.

DESCRIPTION

getablexprsupport gives the support of Expr. if Mode is ABL_SUPPORT_CHAIN the support is returned using chain_list else it is returned using ptype_list. The support must be freed using the freechain or freeptype functions.

RETURN VALUE

getablexprsupport returns a pointer to a chain_list or a ptype_list.

EXAMPLE

 #include "abl101.h"
   chain_list *Expr;
   ptype_list *Support;
   ptype_list *ScanSupport;
   Expr = createablbinexpr( ABL_AND,
                            createablatom( "a" ),
                            createablatom( "b" ) );
   Support = getablexprsupport( Expr, ABL_SUPPORT_PTYPE );
   /* displays a b */
   for ( ScanSupport  = Support; 
         ScanSupport != (ptype_list *)0;
         ScanSupport  = ScanSupport->NEXT )
   {
     printf( "%s ", (char *)ScanSupport->DATA );
   }
   freeptype( Support );
 

SEE ALSO

abl(1)

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