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/*
* Copyright (c) 2009 Samit Basu
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include "Array.hpp"
#include "Interpreter.hpp"
//!
//@Module LASTERR Retrieve Last Error Message
//@@Section FLOW
//@@Usage
//Either returns or sets the last error message. The
//general syntax for its use is either
//@[
// msg = lasterr
//@]
//which returns the last error message that occured, or
//@[
// lasterr(msg)
//@]
//which sets the contents of the last error message.
//@@Example
//Here is an example of using the @|error| function to
//set the last error, and then retrieving it using
//lasterr.
//@<
//try; error('Test error message'); catch; end;
//lasterr
//@>
//Or equivalently, using the second form:
//@<
//lasterr('Test message');
//lasterr
//@>
//@@Tests
//@{ test_lasterr1.m
//function test_val = test_lasterr1
// try
// error('Hulabaloo');
// catch;
// end;
// test_val = strcmp(lasterr,'Hulabaloo');
//@}
//@@Signature
//sfunction lasterr LasterrFunction
//inputs msg
//outputs msg
//!
ArrayVector LasterrFunction(int nargout, const ArrayVector& arg,
Interpreter* eval) {
if (arg.size() == 0)
return ArrayVector(Array(eval->getLastErrorString()));
eval->setLastErrorString(arg[0].asString());
return ArrayVector();
}
//!
//@Module ERRORCOUNT Retrieve the Error Counter for the Interpreter
//@@Section FREEMAT
//@@Usage
//This routine retrieves the internal counter for the interpreter,
//and resets it to zero. The general syntax for its use is
//@[
// count = errorcount
//@]
//@@Signature
//sfunction errorcount ErrorCountFunction
//inputs none
//outputs count
//!
ArrayVector ErrorCountFunction(int nargout, const ArrayVector& arg,
Interpreter* eval) {
return ArrayVector(Array(double(eval->getErrorCount())));
}
//!
//@Module WARNING Emits a Warning Message
//@@Section FLOW
//@@Usage
//The @|warning| function causes a warning message to be
//sent to the user. The general syntax for its use is
//@[
// warning(s)
//@]
//where @|s| is the string message containing the warning.
//@@Signature
//sfunction warning WarningFunction
//inputs msg
//outputs none
//!
ArrayVector WarningFunction(int nargout, const ArrayVector& arg, Interpreter* eval) {
if (arg.size() == 0)
throw Exception("Not enough inputs to warning function");
if (!(arg[0].isString()))
throw Exception("Input to error function must be a string");
eval->warningMessage(arg[0].asString());
return ArrayVector();
}
//!
//@Module ERROR Causes an Error Condition Raised
//@@Section FLOW
//@@Usage
//The @|error| function causes an error condition (exception
//to be raised). The general syntax for its use is
//@[
// error(s),
//@]
//where @|s| is the string message describing the error. The
//@|error| function is usually used in conjunction with @|try|
//and @|catch| to provide error handling. If the string @|s|,
//then (to conform to the MATLAB API), @|error| does nothing.
//@@Example
//Here is a simple example of an @|error| being issued by a function
//@|evenoddtest|:
//@{ evenoddtest.m
//function evenoddtest(n)
// if (n==0)
// error('zero is neither even nor odd');
// elseif ( n ~= fix(n) )
// error('expecting integer argument');
// end;
// if (n==int32(n/2)*2)
// printf('%d is even\n',n);
// else
// printf('%d is odd\n',n);
// end
//@}
//The normal command line prompt @|-->| simply prints the error
//that occured.
//@<2
//evenoddtest(4)
//evenoddtest(5)
//evenoddtest(0)
//evenoddtest(pi)
//@>
//@@Tests
//@{ test_error1.m
//function test_val = test_error1
// test_val = false;
// try
// error('test')
// catch
// test_val = true;
// end
//@}
//@@Signature
//function error ErrorFunction
//inputs string
//outputs none
//!
ArrayVector ErrorFunction(int nargout, const ArrayVector& arg) {
if (arg.size() == 0)
return ArrayVector();
QString etxt(arg[0].asString());
if (!etxt.isEmpty())
throw Exception(etxt);
return ArrayVector();
}
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