Diffstat (limited to 'noncore/tools/calc2/engine.cpp') (more/less context) (ignore whitespace changes)
-rw-r--r-- | noncore/tools/calc2/engine.cpp | 133 |
1 files changed, 70 insertions, 63 deletions
diff --git a/noncore/tools/calc2/engine.cpp b/noncore/tools/calc2/engine.cpp index e843e29..74cd701 100644 --- a/noncore/tools/calc2/engine.cpp +++ b/noncore/tools/calc2/engine.cpp @@ -14,43 +14,50 @@ ** See http://www.trolltech.com/gpl/ for GPL licensing information. ** ** Contact info@trolltech.com if any conditions of this licensing are ** not clear to you. ** **********************************************************************/ #include "engine.h" + +/* OPIE */ +#include <opie2/odebug.h> + +/* QT */ #include <qstring.h> -#include <math.h> #include <qlcdnumber.h> +/* STD */ +#include <math.h> + Data Engine::evalStack (Data num, bool inbrace = FALSE) { if (state != sError) { Instruction *i; // Pop the next op from the stack while (!stack.isEmpty () && (braces || !inbrace)) { i = stack.pop (); // Check this ops prec vs next ops prec if (!stack.isEmpty ()) - if (i->precedence <= stack.top()->precedence) - i->acc = evalStack (i->acc, inbrace); + if (i->precedence <= stack.top()->precedence) + i->acc = evalStack (i->acc, inbrace); // Evaluate this instruction num = i->eval (num); // Error-check ( change this to work for all types ) if (isnan (num.dbl) || isinf (num.dbl)) { - qDebug ("bad result from operation"); - state = sError; - clearData(&num); - return num; + odebug << "bad result from operation" << oendl; + state = sError; + clearData(&num); + return num; } } } return num; } // Plugins call this to request the stack be evaluated void Engine::eval () @@ -84,116 +91,116 @@ void Engine::pushInstruction (Instruction * i) } } void Engine::pushValue (char v) { if (state == sAppend) { bool ok = FALSE; switch (currentRep) { - case rDouble: - displayString.append(v); - num.dbl=displayString.toDouble(&ok); - break; - case rFraction: - break; - default: - displayString.append(v); - num.i=displayString.toInt(&ok, calcBase()); + case rDouble: + displayString.append(v); + num.dbl=displayString.toDouble(&ok); + break; + case rFraction: + break; + default: + displayString.append(v); + num.i=displayString.toInt(&ok, calcBase()); }; if (!ok) { - state = sError; - odebug << "pushValue() - num->string conversion" << oendl; + state = sError; + odebug << "pushValue() - num->string conversion" << oendl; } else { - const QString constString = displayString; - emit(display(constString)); + const QString constString = displayString; + emit(display(constString)); }; } else if (state == sStart) { softReset(); displayString.truncate(0); state = sAppend; pushValue (v); } else if (state == sError) { - qDebug ("in error state"); + odebug << "in error state" << oendl; return; } } void Engine::del () { bool ok; switch (currentRep) { - case rDouble: - displayString.truncate(displayString.length()); - num.dbl=displayString.toDouble(&ok); - break; - case rFraction: - odebug << "not available" << oendl; - break; - default: - displayString.truncate(displayString.length()); - num.i = displayString.toInt(&ok, calcBase()); + case rDouble: + displayString.truncate(displayString.length()); + num.dbl=displayString.toDouble(&ok); + break; + case rFraction: + odebug << "not available" << oendl; + break; + default: + displayString.truncate(displayString.length()); + num.i = displayString.toInt(&ok, calcBase()); }; if (!ok) { - state = sError; - odebug << "del() - num->string conversion" << oendl; + state = sError; + odebug << "del() - num->string conversion" << oendl; } else { - const QString constString = displayString; - emit(display(constString)); + const QString constString = displayString; + emit(display(constString)); }; } void Engine::displayData(Data d) { switch (currentRep) { - case rDouble: - displayString.setNum(d.dbl); - break; - case rFraction: - odebug << "fractional display not yet impl" << oendl; - break; - default: - displayString.setNum(d.i, calcBase()); - break; + case rDouble: + displayString.setNum(d.dbl); + break; + case rFraction: + odebug << "fractional display not yet impl" << oendl; + break; + default: + displayString.setNum(d.i, calcBase()); + break; }; const QString constString= displayString; emit(display(constString)); } // Returns the base when Rep is an integer type int Engine::calcBase () { switch (currentRep) { - case rBin: - return 2; - case rOct: - return 8; - case rDec: - return 10; - case rHex: - return 16; - default: - state = sError; - odebug << "Error - attempt to calc base for non-integer" << oendl; - return 10; + case rBin: + return 2; + case rOct: + return 8; + case rDec: + return 10; + case rHex: + return 16; + default: + state = sError; + odebug << "Error - attempt to calc base for non-integer" << oendl; + return 10; }; } // Special instruction for internal use only class iOpenBrace:public Instruction { public: - iOpenBrace (Engine *e):Instruction (100) {engine = e;}; - ~iOpenBrace () {}; + iOpenBrace (Engine *e):Instruction (100) {engine = e;}; + ~iOpenBrace () {}; - Data eval (Data num) { - engine->decBraces(); - return num; - }; + Data eval (Data num) { + engine->decBraces(); + return num; + }; private: - Engine *engine; + Engine *engine; }; void Engine::openBrace() { pushInstruction(new iOpenBrace(this)); } void Engine::closeBrace() { braces++;evalStack(num,TRUE); |