Does checkcode return the status of the "Message indicator box", i.e. red/orange/green ?

I search for an automatic way to find out if a file has a syntax error. That is, to find the same piece of information that the Code Analyzer indicates with red in the "Message indicator box" of the editor.

I took for granted that checkcode provides the information corresponding to the colors of the "Message indicator box".

Doc (R2012a) says:

    [...] checkcode('filename') displays messages, sometimes referred to as 
    Code Analyzer messages, [...]

thus, I tried

    info = checkcode( filespec );

and

    info = checkcode( filespec, '-id' );

However, I cannot find the piece of information I need. isempty(info) equal to true indicates green, but, I cannot figure out how to find an indicator for red. (Not empty indicates red or orange.)

One way would be to have a list of the ID, which stands for errors.

I did check http://undocumentedmatlab.com/

[Walter Roberson]

I am not sure if I understand what you are asking? Are you asking it to analyze a file that definitely has syntax errors, but are finding that it returns emptyness ?

[per isakson]

I've tried to make the question clearer.

[Image Analyst]

Sounds like he's trying to make his own mlint functionality. Not sure why since this functionality already exists in MATLAB.

[Sean de Wolski]

It sounds like he'd like to be able to test whether a file has syntax errors before running it - sounds fair to me...

[per isakson]

Yes, I want to check for syntax errors as the first step when running a test suite.

Answer 1

[Yair Altman]

I must admit that I have it on my articles TODO list for quite some time...

Here's something to get you started: http://www.mathworks.com/matlabcentral/newsreader/view_thread/255839#755939 (continue reading down the thread)

Related: http://www.mathworks.com/matlabcentral/newsreader/view_thread/145245 (oddly enough, you were part of that thread, Per...)

Also related: http://www.mathworks.com/matlabcentral/answers/15929-use-of-mlintmex-in-mcc-deployed-code

In summary, you could simply do:

errMsgs = mlint('-m2',srcFileNames); % m2 = errors only
m1Msgs  = mlint('-m1',srcFileNames); % m1 = errors and severe warnings only
allMsgs = mlint('-m0',srcFileNames); % m0 = all errors and warnings

Note that mlint returns the data in struct format, while mlintmex returns a string that you must parse.

Yair Altman

http://UndocumentedMatlab.com

Answer 2

[Sean de Wolski]

It looks like you could use try/catch and do an isempty check on the ME.stack:

%checkcodetest.m
X = [pi    
for ii = 1:3
disp('hi')
end

And:

try;
 checkcodetest;
catch ME;
end

Now to test:

isempty(ME.stack)