Basic Characteristics RAPID

Basic Characteristics RAPID Routines
with the degree of the corresponding formal parameter. The dimension of an array
parameter is “conformant” (marked with “*”). The actual dimension thus depends on
the dimension of the corresponding argument in a routine call. A routine can determine
the actual dimension of a parameter using the predefined function, Dim.
Example: PROC routine5 (VAR num pallet{*,*})
3.3 Routine termination
The execution of a procedure is either explicitly terminated by a RETURN instruction
or implicitly terminated when the end (ENDPROC, BACKWARD or ERROR) of the
procedure is reached.
The evaluation of a function must be terminated by a RETURN instruction.
The execution of a trap routine is explicitly terminated using the RETURN instruction
or implicitly terminated when the end (ENDTRAP or ERROR) of that trap routine is
reached. Execution continues from the point where the interrupt occurred.
3.4 Routine declarations
A routine can contain routine declarations (including parameters), data, a body, a backward
handler (only procedures) and an error handler (see Figure 3). Routine declarations
cannot be nested, i.e. it is not possible to declare a routine within a routine.
Module
Data declarations
Routine a
Routine b
Routine c
Routine d
Routine e
Routine declaration
Data declarations
Body (Instructions)
Backward handler
Error handler
Figure 3 A routine can contain declarations, data, a body, a backward handler and an error
handler.
RAPID Reference Manual 5-13