CodeSnip Old Code (SVN)

Renamed IDatabase and Database function, along with internal TDatabase class and PvtDatabase varibale by placing underscore in front of their names. This is to flag the items as "legacy" and to avoid name clashes with new database code being developed.
Modified all code that calls Database to use _Database instead.

Removed unused USnippetIDs unit from project.
Changed affected units to use CS.Database.Snippets instead.

Removed assertions that test for nil snippet after calls to Database.Lookup: this method now raises an exception when the lookup fails (see revision 3984).

Changed ISearchFilter.Match to take a TSnippetID parameter instead of a TSnippet.
Changed ISearch.Execute's input and output parameters types from TSnippetList to ISnippetIDList.
Made minimal internal changes necessitated by these type changes.

Changed TSearchFilterFactory.CreateManualSelectionSearchFilter to take a ISnippetIDList parameter instead of TSnippetList.

Changed some enumerations of snippet lists to use enumerator instead of indexed access to list elements.

Moved ISnippetIDList from USnippetIDs unit into CS.Database.Types where it replaced IDBSnippetIDList.
Changed affected TSnippet properties to use ISnippetIDList instead of IDBSnippetIDList.
Modified uses clauses of affected units.

Renamed TDBSnippetID in CS.Database.Types to TSnippetID and deleted TSnippetID from USnippetIDs.
Adjusted uses clauses of all code that uses TSnippetID as necessary.

Modified text search code that constructs the required search text for each snippet:
* Uses the active text plain text renderer to extract plain text from snippet's active text properties.
* Uses a string builder to construct the search text.

Renamed TSnippet's Units, Depends and XRef properties to RequiredModules, RequiredSnippets and XRefs respectively and modified affected code accordingly.