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90 lines
2.3 KiB
Plaintext
Executable File
90 lines
2.3 KiB
Plaintext
Executable File
-- File: TDataStd_Expression.cdl
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-- Created: Tue Dec 16 17:32:53 1997
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-- Author: Denis PASCAL
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-- <dp@dingox.paris1.matra-dtv.fr>
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---Copyright: Matra Datavision 1997
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class Expression from TDataStd inherits Attribute from TDF
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---Purpose: Expression attribute.
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-- ====================
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--
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-- * Data Structure of the Expression is stored in a
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-- string and references to variables used by the string
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--
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-- Warning: To be consistent, each Variable referenced by the
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-- expression must have its equivalent in the string
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uses Attribute from TDF,
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Label from TDF,
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GUID from Standard,
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Real from Standard,
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DataSet from TDF,
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RelocationTable from TDF,
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ExtendedString from TCollection,
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AttributeList from TDF
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is
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---Purpose: class methods
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-- =============
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GetID (myclass)
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---C++: return const &
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returns GUID from Standard;
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Set (myclass ; label : Label from TDF)
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---Purpose: Find, or create, an Expression attribute.
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returns Expression from TDataStd;
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---Purpose: Expressionmethods
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-- ============
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Create
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returns mutable Expression from TDataStd;
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Name (me)
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---Purpose: build and return the expression name
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returns ExtendedString from TCollection;
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SetExpression (me : mutable; E : ExtendedString from TCollection);
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GetExpression (me)
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returns ExtendedString from TCollection;
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---C++: return const &
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GetVariables (me : mutable)
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---C++: return &
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returns AttributeList from TDF;
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---Category: TDF_Attribute methods
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-- =====================
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ID (me)
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---C++: return const &
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returns GUID from Standard;
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Restore (me: mutable; With : Attribute from TDF);
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NewEmpty(me)
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returns mutable Attribute from TDF;
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Paste (me; Into : mutable Attribute from TDF;
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RT : mutable RelocationTable from TDF);
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Dump(me; anOS : in out OStream from Standard)
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returns OStream from Standard
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is redefined;
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---C++: return &
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fields
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myExpression : ExtendedString from TCollection;
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myVariables : AttributeList from TDF;
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end Expression;
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