CodeSnip Old Code (SVN)

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{TODO -oSelf -cBug :
Fix bug #2868707
Selecting snippets using the Search | Select Snippets menu item and then
editing a selected snippet can cause the snippet to disappear from the
selection when the snippets editor is closed. 
-----------------------------
Snippet selection query uses object reference, but editing snippet
recreates the object, changing references. This is a deep problem and won't
be fixed until planned reworking of query / database code.}
{TODO -oSelf -cInstaller : Change to require Windows 2K as minimum version once project moved to Delphi 2010 }
{TODO -oSelf -cRefactor : Extract common code in UDropDownButtons and UTVCheckBoxes into common base class.}
{TODO -oSelf -cFeature : Add support for external user defined units.
+ Split list boxes on references page of snippets editor into Delphi and user defined sections.
+ User must provide search path for their own units
+ Snippets editor / unit manager will check for those units
+ Test compiler will need to check for the units, so search paths must be persistent.
+ Unit generator must be able to use these units. Emit a comment in unit saying that user defined units have been used and must be on search path.
+ Add search path page to preferences dialog box?}
{TODO -oSelf -cProposal : Consider what gesture support to add (needs Delphi 2010).}
{DONE -oSelf -cFeature : Add actions to go to next, previous, first and last category (or alpha or kind)}
{TODO -oSelf -cProposal :
Change the Snippets Editor moving code for each pane into separate frame that can
(1) validate entered data
(2) calculate required size for controls}
{DONE -oSelf -cBug : Fix bug #2868706
Selecting a new printer in print dialog and clicking properties can give an exception or properties dialog has wrong title.
Selecting some printers in print dialog and clicking OK can give an exception.}
{TODO -oSelf -cRefactor : Rename identifiers that refer to "routine" with "snippet".}
{TODO -oSelf -cProposal :
UView
  - completely overhaul this unit (careful of assignements tho - check if this
    actually happens between different types (may need wrapper for various
    IView implementations?)}
{DONE -oSelf -cRefactor : Extract common resource strings re comment style from FrSourcePrefs and USaveSourceDlg}
{TODO -oSelf -cProposal : Consider moving syntax highlighting setting (CSS builder) down into FrInfo from FrDetailView since comp check tab no longer uses highlighting}
{TODO -oSelf -cProposal : New TSingleton class that prevents an object from being freed (descendants should permit this). 
To ease freeing when necessary (implementation section, garbage collector etc) make destructors check for support for a do nothing interface (ISingletonDestroy) and only free normally if supported, then support in implementations and not in interface of unit. Eg.
TMySingleton = class(TInterfacedObject)
...
end;

TMySingletonImpl = class(TMySingleton, ISingletonDestroyable)
...
end;

TMySingleton.Destroy;
begin
  if Supports(Self, ISingletonDestroy) then
   // prermit destruction
 else
  // don't permit destruction
 end;

Could have base class TSingleton = class(TInterfacedObject) that provides default destruction and virtual method called to do tidy up only if can destroy.}
{DONE -oSelf -cProposal : Share email and user name persistence used by code submission to bug reports, mailing list etc.}
{TODO -oSelf -cProposal : Move Compile, View compile errors and configure compilers menu options to a new Compile menu?}
{TODO -oSelf -cRefactor : See if we can pull out common HTML and REML code into SGML unit}
{TODO -oSelf -cRefactor : Create StringToOrd and OrdToString dictionaries and use to create two way char entity object to replace one in UTaggedTextLexer and UREMLDataIO etc. Also use for tag lookup in TTaggedTextLexer}
{TODO -oSelf -cRefactor : Re-implement MakeSafeHTML in terms of a char entity class like that for REML? Use common base class with entities class in UREMLDataIO?}
{TODO -oSelf -cProposal : Consider making TDateTime a record that can use =, < etc and to use TRange in when comparing file differences}
{TODO -oSelf -cProposal : Add update date to each routine object}
{TODO -oSelf -cRefactor : Merge the IO and UI manager code into WBController}
{DONE -oSelf -cBug :Fix bug #2868704
Some custom printer properties set in Document Properties dialog box are
not passed to printer.
First noticed in v1.7. Still a problem in v3.x}
{TODO  -oSelf -cRefactor : Try to decouple UPageSetup, UPrintMgr and source code manager objects from associated dialog boxes}
{TODO -cProposal -oSelf :Terminate application when unexpected (non-CodeSnip) error trapped.}
{TODO -oSelf -cFeature : Add code to THilitePasParser to detect location of directives and decide if they should be classed as reserved words or not}
{TODO -oSelf -cFeature : Add parsing for standard user routine. Must start with procedure or function. Need to
parse. Grammar is:
  <proc_proto> ::= "procedure" <ident> [<param_list>] ";" [<directives>]
  <fn_proto> ::= "function" <ident> [<param_list>] ":" <ident> ";" [<directives>]
  <param_list> ::= "(" <param_def> (*repeat ";" <param_def> *) ")"
  <param_def> ::= <ident> [ ":" <ident> ]
  <ident> ::= valid Pascal identifier
  <directives> ::= <directive> (*repeat ";" <directive> *)
  <directive> ::= "register" | "pascal" | "cdecl" | "stdcall" | "safecall" | "overload"

Parsing for consts and types for our purpose is simple:

  <type-def> ::= "type" <definitions>
  <const-def> ::= "const" <definitions>}