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-- File: Units_Lexicon.cdl
-- Created: Mon Jun 22 16:49:16 1992
-- Author: Gilles DEBARBOUILLE
-- <gde@phobox>
---Copyright: Matra Datavision 1992
class Lexicon from Units
inherits
TShared from MMgt
---Purpose: This class defines a lexicon useful to analyse and
-- recognize the different key words included in a
-- sentence. The lexicon is stored in a sequence of
-- tokens.
uses
HAsciiString from TCollection,
AsciiString from TCollection,
TokensSequence from Units
is
Create returns mutable Lexicon from Units;
---Level: Internal
---Purpose: Creates an empty instance of Lexicon.
Creates(me : mutable ; afilename : CString)
---Level: Internal
---Purpose: Reads the file <afilename> to create a sequence of tokens
-- stored in <thesequenceoftokens>.
is static;
Sequence(me) returns any TokensSequence from Units
---Level: Internal
---C++: inline
---Purpose: Returns the first item of the sequence of tokens.
is static;
FileName(me) returns AsciiString from TCollection
---Level: Internal
---Purpose: Returns in a AsciiString from TCollection the name of the file.
is static;
UpToDate(me) returns Boolean
---Level: Internal
---Purpose: Returns true if the file has not changed since the
-- creation of the Lexicon object. Returns false
-- otherwise.
is virtual;
AddToken(me : mutable ; aword , amean : CString ; avalue : Real)
---Level: Internal
---Purpose: Adds to the lexicon a new token with <aword>, <amean>,
-- <avalue> as arguments. If there is already a token
-- with the field <theword> equal to <aword>, the
-- existing token is updated.
is static;
Dump(me)
---Level: Internal
---C++: inline
---Purpose: Useful for debugging.
is virtual;
fields
thefilename : HAsciiString from TCollection;
thetime : Time;
thesequenceoftokens : TokensSequence from Units;
end Lexicon;
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