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Diagram tool: Code generation

All actions taken in the diagram tool that modify a part of the system are immediately reflected in the Eiffel system. Following is a summary of these actions.

  • When you create a new class, this is the generated empty class:

note description: "Objects that ..." author: "" date: "$Date: 2008-09-02 13:54:45 +0200 (Tue, 02 Sep 2008) $" revision: "$Revision: 74646 $" class CLASS_NAME end -- class CLASS_NAME

  • When you delete a class, the class file is removed from the disk.
  • When you add a parent to a class, the parent is inserted in the existing inheritance clause, without any additional ( undefine/ select/etc.) clauses to solve possible conflicts.

note description: "Objects that ..." author: "" date: "$Date: 2008-09-02 13:54:45 +0200 (Tue, 02 Sep 2008) $" revision: "$Revision: 74646 $" class CLASS_NAME inherit NEW_PARENT end -- class CLASS_NAME

  • When removing an inheritance link, the entire parent clause is removed, i.e. including any redefine/undefine/etc. until the matching end.
  • When creating a client link, a function or attribute is generated by the feature wizard. When creating a function, this code is generated:

note description: "Objects that ..." author: "" date: "$Date: 2008-09-02 13:54:45 +0200 (Tue, 02 Sep 2008) $" revision: "$Revision: 74646 $" class CLASS_NAME feature -- Access f: TYPE -- Client from CLASS_NAME to TYPE. do end end -- class CLASS_NAME

  • If you choose to create an attribute for the client link, and optionally specify to generate a set-procedure and an invariant, the following code will be pasted into the class text:

note description: "Objects that ..." author: "" date: "$Date: 2008-09-02 13:54:45 +0200 (Tue, 02 Sep 2008) $" revision: "$Revision: 74646 $" class CLASS_NAME feature -- Access f: TYPE -- Client from CLASS_NAME to TYPE. feature -- Element change set_f (a_f: TYPE) -- Client from CLASS_NAME to TYPE. require a_f_not_void: af /= Void do f := a_f ensure f_assigned: f = a_f end invariant f_not_void: f /= Void end -- class CLASS_NAME

  • When removing a client link, only the matching function or attribute is removed. Any additionally generated set-feature or invariant is not removed.
  • When removing a cluster, the associated directory is not erased, but the reference to the cluster is removed from the configuration file. At this time, it is not possible to create a cluster using the diagram tool, only to remove one.
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