Functions::Functions( char angleMode, QObject * parent )
: QObject( parent ), d( new Functions::Private )
{
d->p = this;
setAngleMode( angleMode );
d->createBuiltInFunctions();
retranslateText();
}
PostfixEvaluator::PostfixEvaluator(MemoryBank& mbref) : mBank(mbref)
{
setAngleMode(MathUtil::DEGREES);
}
/** Append text to Expression. Overwrites a trailing operator with the new one, if a sequence of
* two operators is input.
* Recognizes and executes C, AC and = commands.
*/
void Calculator::addToExpressionText(const QString & buttonText)
{
QString text = buttonText;
try{
if(text == "C")
clearLast();
else if(text == "AC")
clearAll();
else if(text == "+/-")
changeSign();
else if(text == m_TextRad)
setAngleMode(text);
else if(text == m_TextDeg)
setAngleMode(text);
else if(text == "=")
{
if(isPlotExpression())
createPlot();
else parseExpression();
}
else if(text=="x")
addVariable(text);
else if(text.startsWith("Plot"))
plotter.processPlotCommand(text);
else{ //we have a digit, operator or function
//no clear or evaluate command
if(text == "x^y") //convert to operator
text = "^";
if(isNumber(text)){ //No parenthesis, we have a digit or a decimal separator
addDigit(text);
emit guiStateSuggested(STATE_STANDARD); //return to std page, if on Fn Page for entering E
}
else if(isOperator(text)) //operator or digit
{
addOperator(text);
}
else if(isParenthesis(text)) //we have a parenthesis
{
addParenthesis(text);
}
else if(isFunction(text)) //we have a function
{
addFunctionCall(text);
}
else if(isVariable(text)) //we have a variable
{
addVariable(text);
}
else throw ExExpressionError(tr("Unknown command:") + text);
} //end digit operator or function
m_ExpressionText = m_ExpressionParts.join("");
if(isPlotExpression())
emit expressionTextChanged("y=" + m_ExpressionText);
else emit expressionTextChanged(m_ExpressionText);
} //end try
catch(ExExpressionError e)
{
emit guiStateSuggested(STATE_STANDARD);
emit errorMessage(tr("Input Error"),e.what());
}
catch(std::exception e)
{
emit guiStateSuggested(STATE_STANDARD);
emit errorMessage(tr("Unknown Input Error"),e.what());
}
}
