substablexpr3

Synopsys

#include "abl101.h"
chain_list ∗substablexpr( Expr1, Name, Expr2 )
  chain_list ∗Expr1;
  char       ∗Name;
  chain_list ∗Expr2;

Parameters

Overview

substablexpr substitutes Atom in Expr1 by Expr2. The expression pointer Expr1 MUSTN'T be used after the call to this function.

Return value

substablexpr returns the modified expression.

Examples

#include "abl101.h"
  chain_list ∗Expr1;
  chain_list ∗Expr2;
  Expr1 = createablbinexpr( ABL_OR,
                            createablatom( "a" ),
                            createablatom( "b" ) );
  Expr2 = createablbinexpr( ABL_AND,
                            createablatom( "c" ),
                            createablatom( "d" ) );
  Expr1 = substablexpr( Expr1, "a", Expr2 );
  /* displays ((c and d) or b) */
  viewablexpr( Expr1, ABL_VIEW_VHDL );