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METHODS - Short Reference

Reference

Other versions: 7.31 | 7.40 | 7.54

Syntax

METHODS meth [ABSTRACT|FINAL] 
            |[DEFAULT IGNORE|FAIL] 

             [FOR EVENT evt OF {class|intf}] 

  [ IMPORTING {{VALUE(p1)|REFERENCE(p1)|p1} typing [OPTIONAL|DEFAULT def1] 

               {VALUE(p2)|REFERENCE(p2)|p2} typing [OPTIONAL|DEFAULT def2] 

               ... } 
 
            [PREFERRED PARAMETER p] ] 

  [ EXPORTING {{VALUE(p1)|REFERENCE(p1)|p1} typing 

               {VALUE(p2)|REFERENCE(p2)|p2} typing 

              ... } ] 
  [ CHANGING
 {{VALUE(p1)|REFERENCE(p1)|p1} typing [OPTIONAL|DEFAULT def1] 

               {VALUE(p2)|REFERENCE(p2)|p2} typing [OPTIONAL|DEFAULT def2] 

              ... } ] 
  [ RETURNING {VALUE(r)} typing ] 

  [{RAISING exc1|RESUMABLE(exc1) exc2|RESUMABLE(exc2) ...} 
  | {EXCEPTIONS exc1 exc2 ...} ]. 

Effect

Declares an instance method meth in the declaration part of a class or in an interface.

Additions

• ABSTRACT
  Declares an abstract method that cannot be implemented in the same class.
• FINAL
  Declares a final method that cannot be redefined in a subclass.
• DEFAULT IGNORE|FAIL
  Declares an optional interface method.
• FOR EVENT evt OF {class|intf}
  Declares an event handler that can handle the event evt of the class class or of the interface intf. Only input parameters are possible.
• IMPORTING
  Defines input parameters p1, p2, ...
• EXPORTING
  Defines output parameters p1, p2, ...
• CHANGING
  Defines input/output parameters p1, p2, ...
• RETURNING
  Declares a functional method with a fully typed return value r.
• VALUE(p1) ... VALUE(p2) ...
  Defines the pass by value for a formal parameter.
• REFERENCE(p1)|p1 ... REFERENCE(p2)|p2 ...
  Defines the pass by reference for a formal parameter.
• typing
  Types the formal parameters.
• OPTIONAL|DEFAULT
  Defines optional input or input/output parameters either with or without the replacement parameters def1, def2, ...
• PREFERRED PARAMETER p
  Declares a parameter p of exclusively optional input parameters as preferred parameters.
• RAISING exc1|RESUMABLE(exc1) exc2|RESUMABLE(exc2) ...
  Declares class-based exceptions exc1, exc2, ... that can be propagated from the method either with or without resumability.
• EXCEPTIONS exc1 exc2 ...
  Defines non-class based exceptions exc1, exc2, ...