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-- File: Dynamic_Variable.cdl
-- Created: Wed Aug 24 09:59:22 1994
-- Author: Gilles DEBARBOUILLE
-- <gde@watson>
---Copyright: Matra Datavision 1994
class Variable from Dynamic
inherits
TShared from MMgt
---Purpose: This class is the root class for describing
-- variables. A variable is useful to specify the
-- signature of a method in terms of arguments and if
-- necessary variables and/or constants needed inside
-- a function. This set of information defines a
-- scope for these variables. This class is directly
-- used by the MethodDefinition class. From this
-- class is derived the instances of variables which
-- are used by the classes under the MethodInstance
-- class. A variable is composed by :
--
-- * an identifier for giving it a name,
-- * a type of expected value,
-- * possibly a default value,
-- * a mode which explains if the variable is :
--
-- - an input and/or output argument to the method,
-- - an internal or constant variable used in the
-- body of the method.
uses
OStream from Standard,
Parameter from Dynamic,
ModeEnum from Dynamic
is
Create returns mutable Variable from Dynamic;
---Level: Advanced
---Purpose: Creates and returns an empty instance of this class.
Parameter(me : mutable ; aparameter : Parameter from Dynamic)
---Level: Advanced
---Purpose: Sets the parameter <aparameter> in <me>. This
-- parameter gives the name, the type of value, and if
-- necessary the default value of the variable.
is static;
Parameter(me) returns any Parameter from Dynamic
---Level: Advanced
---Purpose: Returns the parameter stored in <me>.
is static;
Mode(me : mutable ; amode : ModeEnum from Dynamic)
---Level: Advanced
---Purpose: Sets the mode to the variable. the mode is to take in
-- the enumeration IN, OUT, INOUT, INTERNAL, CONSTANT,
-- which describes the type of the variable.
is static;
Mode(me) returns ModeEnum from Dynamic
---Level: Advanced
---Purpose: Returns the mode of the variable.
is static;
Dump(me; astream : in out OStream from Standard);
---Level: Internal
---Purpose: Useful for debugging.
fields
theparameter : Parameter from Dynamic;
themode : ModeEnum from Dynamic;
end Variable;
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