RosettaCodeData/Task/Function-definition/Amazing-Hopper/function-definition.hopper

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/* this need data into stack */
#context Multiplication
mul
Return \\
#synon Multiplication *getproduct
#context-free anothermul
/* #defn Args(*) #GENCODE $$$*$$$ #REVLIST=0,mov(#REVLIST);#ENDGEN, */
Args 'a,b'
Return ( #(a*b) )\\
#synon anothermul *getanotherproduct
#include <jambo.h>
#prototype _multiply(_X_,_Y_)
#synon __multiply Multiply
Main
/* "prototipos" of functions and procedures.
Solves internaly */
Printnl ( Multiply ( 10, 4 ) )
Printnl ( __multiply ( 10, 4 ) )
/* definición alternativa 1 */
Printnl ( Set' 10,4 ', Gosub ' Multiply2 ')
/* aseembler Hopper 1 */
{10,4} jsub( Multiply3 ), {"\n"} print
/* assembler Hopper 2 */
{10,4} jsub( Multiply4 ), {"\n"} print
/* context */
Set '10,4', now get product, and print with newline
/* context-free */
Set '10,4', and get another product; then print with newline
End
.locals /* Subrutines */
_multiply(a,b)
Return ( Mul(a,b) )
/* Define is macro. Others macros: Function, Procedure:
#defn Define(_F_,*) _F_:,#GENCODE $$$*$$$ #REVLIST=0;mov(#REVLIST);#ENDGEN;
#defn Function(_F_,*) _F_:,#GENCODE $$$*$$$ #REVLIST=0;mov(#REVLIST);#ENDGEN;
#defn Procedure(_F_,*) _F_:,#GENCODE $$$*$$$ #REVLIST=0;mov(#REVLIST);#ENDGEN;
*/
Define 'Multiply2, a,b'
Return ( Mul(a,b) )
Multiply3:
b=0, mov(b), a=0, mov(a)
{a,b}mul /* result into stack */
Return
Multiply4:
mul /* get values from stack,
and put result into stack */
back /* Return */