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-- File: PCollection_HSingleList.cdl
-- Created: Wed Feb 19 14:24:56 1992
-- Author: Jean Pierre TIRAULT
-- <jpt@topsn1>
generic class HSingleList from PCollection (Item as Storable)
inherits PManaged
raises
NoSuchObject from Standard
is
---Purpose: Definition of a single linked list.
Create returns mutable HSingleList;
---Creation of an empty list.
IsEmpty(me) returns Boolean from Standard;
---Level: Public
---Purpose: Returns True if the list contains no element.
Construct(me; T : Item) returns mutable
HSingleList;
---Level: Public
---Purpose: add T at the begining of me
---Example: before
-- me = (A B C)
-- after
-- me = (A B C)
-- returns
-- (T A B C)
Value(me) returns any Item
raises NoSuchObject from Standard;
---Level: Public
---Purpose: Returns the value of the first node of me.
-- Raises an exception if me is empty.
---Example: before
-- me = (A B C)
-- after
-- me = (A B C)
-- returns
-- A
Tail(me) returns any HSingleList
raises NoSuchObject from Standard;
---Level: Public
---Purpose: End of the list me.
-- Raises an exception if me is empty.
---Example: before
-- me = (A B C)
-- after
-- me = (A B C)
-- returns
-- (B C)
SwapTail(me : mutable; WithList : in out any HSingleList)
raises NoSuchObject from Standard;
---Level: Public
---Purpose: Exchanges the end of <me> with the list WithList.
-- Raises an exception if me is empty.
---Example: before
-- me = (A B C)
-- WithList = (D E)
-- after
-- me = (A D E)
-- WithList = (B C)
SetValue(me : mutable; T : Item)
raises NoSuchObject from Standard ;
---Level: Public
---Purpose: Changes the value of the first node of me.
-- Raises an exception if me is empty.
---Example: before
-- me = (A B C)
-- after
-- me = (T B C)
ChangeForwardPointer(me : mutable; ForwardPointer : HSingleList);
---Level: Public
---Purpose: Modification of the node link.
ShallowCopy(me)
returns mutable like me
is redefined;
---Level: Advanced
---C++: function call
ShallowDump (me; s: in out OStream)
is redefined;
---Level: Advanced
---C++: function call
fields
Data : Item;
Next : HSingleList;
end HSingleList;
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