[QScintilla] Matlab Lexer

[Phil Thompson]

On Wed, 13 Apr 2011 13:51:26 -0400, John Swensen <jpswensen at gmail.com>
wrote:
> On Apr 13, 2011, at 1:13 PM, Phil Thompson wrote:
> 
>> On Wed, 13 Apr 2011 11:44:11 -0400, John Swensen <jpswensen at gmail.com>
>> wrote:
>>> I am looking at using the QScintilla package for the editor component
of
>>> an IDE for GNU Octave.  I see there is a lexer for Matlab, but am
>> wondering
>>> if something hasn't been completed yet.  For almost every language, I
>> see
>>> both a Lex<NAMEOFLANGUAGE>.cpp file in the lexer directory and a
>>> corresponding qscilexer<NAMEOFLANGUAGE>.cpp file in the Qt4 directory.

>>> However, there is no qscimatlab.cpp file. Do I need to create a
>>> qscimatlab.cpp file, following the pattern of some of the other
>> languages,
>>> to have Matlab syntax support or is there some other way to get the
>> Matlab
>>> lexer working?  I see that the Matlab lexer is linked in by looking at
>>> src/Catalogue.cpp and that when building inside Qt4 there is a
>> LexMatlab.o
>>> file after the build completes, but I can't figure out how to use the
>>> lexer.
>> 
>> High-level support for lexers is added when requested - nobody has
asked
>> for Matlab before.
>> 
>> You can still use the low-level support (the high-level support mainly
>> just manages the lexer configuration).
>> 
>> Phil
> 
> Makes sense.  I will try to get the higher level lexer class for
> Matlab/Octave done and contribute it back to the project.  That issue
> aside, I am still having problems getting QScintilla to highlight even
> using the low-level support.  I added the following to the constructor
of
> the MainWindow class for the example-Qt4 project after the textEdit
object
> has been created.
> 
> textEdit->SendScintilla (QsciScintillaBase::SCI_SETLEXERLANGUAGE,
> "octave");
> // Also tried this, but it didn't work either
> //textEdit->SendScintilla (QsciScintillaBase::SCI_SETLEXER,
> QsciScintillaBase::SCLEX_MATLAB);
>     
> textEdit->SendScintilla (QsciScintillaBase::SCI_SETKEYWORDS, "for if
end");
> 
> It did not syntax highlight an m-file when I opened it.  So, I tried
> putting it in the loadFile() method of the MainWindow in the example,
think
> that maybe you had to set the lexer after the file was opened.  It still
> didn't work.  Sorry to be such a noob, but is there something I am
missing
> that will tell the lexer to start lexing?  I took a look at the setLexer
> method of the QsciScintilla class and couldn't see anything that my
simple
> code was missing, but am clearly wrong somehow.

Don't worry about it. The Matlab lexer is trivial - I'll add
QsciLexerMatlab and QsciLexerOctave to tonight's snapshot.

Phil