Difference between revisions of "Property attributes"
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== Declaration Examples == | == Declaration Examples == | ||
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TmenuItem = class(...) | TmenuItem = class(...) | ||
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end; | end; | ||
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TxxxDatabase = class(...) | TxxxDatabase = class(...) | ||
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== How to store additional info == | == How to store additional info == | ||
Revision as of 15:53, 24 March 2012
Syntax Diagram
PropertyDeclaration ::= PROPERTY Identifier [PropertyInterface] [PropertySpecifiers] [Directives]
PropertySpecifiers ::= [ ... ] [ ... ] [ATTRIBUTES AttributesArray]
AttributesArray ::= '[' (AttributeDeclaration [, AttributeDeclaration]) ']'
AttributeDeclaration ::= '<string>':'<string>'
Declaration Examples
TmenuItem = class(...)
...
property Detachable: Boolean read FDetachable write SetDetachable attributes
['widgetsets:qt,gtk,win32', 'implementor:Vasya Pupkin', 'creation-date:01.01.2007'];
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end;TxxxDatabase = class(...)
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property TransactionModel: TTransactionModel read FtransactionModel write
SetTransactionModel attributes ['engines:firebird,oracle,sybase-asa'];
...
end;How to store additional info
There were two suggestions about the place for the property attributes:
- RTTI. Advantage - easier access from application. Disadvantage - bigger final executable.
- PPU. Advantage - info will not be added to executable. Disadvantage - more complicated way of accessing data.
As a result of the discussion PPU storage has been selected.
