1SUBSTABLEXPR(3)                  ABL FUNCTIONS                 SUBSTABLEXPR(3)
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NAME

6       substablexpr - substitutes a given atom by an expression.
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SYNOPSIS

10       #include "abl101.h"
11       chain_list ∗substablexpr( Expr1, Name, Expr2 )
12         chain_list ∗Expr1;
13         char       ∗Name;
14         chain_list ∗Expr2;
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PARAMETERS

17       Expr1               First expression.
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19       Name                Atom name.
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21       Expr                Second expression.
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DESCRIPTION

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

28       substablexpr returns the modified expression.
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EXAMPLE

31       #include "abl101.h"
32         chain_list ∗Expr1;
33         chain_list ∗Expr2;
34         Expr1 = createablbinexpr( ABL_OR,
35                                   createablatom( "a" ),
36                                   createablatom( "b" ) );
37         Expr2 = createablbinexpr( ABL_AND,
38                                   createablatom( "c" ),
39                                   createablatom( "d" ) );
40         Expr1 = substablexpr( Expr1, "a", Expr2 );
41         /* displays ((c and d) or b) */
42         viewablexpr( Expr1, ABL_VIEW_VHDL );
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SEE ALSO

45       abl(1), substdupablexpr(3).
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52ASIM/LIP6                       October 1, 1997                SUBSTABLEXPR(3)