CodeSnip Old Code (SVN)

Fixed two bugs in UTaggedTextLexer unit:
* Fixed bug ID #3107982 where REML code with un-terminated tags was being accepted.
* Fixed unreported bug that was reporting "unrecognised tag" rather than "empty tag" errors for tags such as < >, </ > and < />.

Moved code that registers memos with TMemoCaretPosDisplayMgr object from FormCreate event handler to InitControls, which is itself called from FormShow. This is because memo window is recreated after FormCreate causing TMemoCaretPosDisplayMgr to lose track of selection change events by hooking into a window that is then destroyed. Registering from FormShow ensures correct memo window handle is used for hook.

Updated to detect selection changes in managed memo control. There is no suitable memo event to handle so memo's window procedure had to be hooked.

Revised error handling to not only select controls containing errors, but, where the controls contain editable text, to select, or place the caret next to, text containing errors.

* Modified EActiveTextParserError exception to descend from EValidation.
* Changed TREMLReader.Parse method to map ensure that all raised EActiveTextParserError exceptions get a copy of the selection information stored in handled ETaggedTextLexer exceptions.

Modified TSourceAnalyser.AddSnippet re change in signature of TSnippetValidator.Validate call by AddSnippet.

Added an additional out parameter to several methods of TSnippetValidator that pass back information about the selection that could be used to highlight any errors. Modified code accordingly.

Changed ETaggedTextLexer to descend from EValidation and modified code of TTaggedTextLexer to pass information about approximate location of errors to ETaggedTextLexer exceptions.

* Added new EValidation exception class that optionally records a selection specifying location of an error where this makes sense.
* Modified EDataEntry exception to descends from EValidation: new constructors added to take selections.

Added new TSelection record that encapsulates a selection defined by its start position and length.