/*package?com.joshua.cal;?*/?
??
import?java.util.Collections;
import?java.util.HashMap;
import?java.util.HashSet;
import?java.util.linkedList;
import?java.util.List;
import?java.util.Map;
import?java.util.Set;
import?java.util.Stack;
??
public?class?Calculator?{??
??
????public?final?Stack?numStack?=?new?Stack（）;??
????private?final?Stack?opStack?=?new?Stack（）;??
??
????private?char?currentOperator;??
????private?char?opStackTop;??
??
????private?int?i;??
????private?String?expression;??
??
????@SuppressWarnings（“rawtypes“）??
????public?void?exec（String?expression）?{??
????????try?{??
????????????clean（）;??
????????????if?（expression?==?null?||?expression.isEmpty（））?{??
????????????????throw?new?IllegalArgumentException（“Blank?expression!“）;??
????????????}??
????????????this.expression?=?expression;??
????????????opStack.push（TERMINATE_TOKENS.START_END_MARK）;??
????????????List?tokens?=?TOKENIZER.exec（expression??
????????????????????+?TERMINATE_TOKENS.START_END_MARK）;??
????????????for?（;?i?????????????????final?object?token?=?tokens.get（i）;??
????????????????if?（token?instanceof?Double）?{??
????????????????????processOperand（（Double）?token）;??
????????????????}?else?{??
????????????????????processOperator（（Character）token）;??
????????????????}??
????????????}??
????????}?catch?（Throwable?e）?{??
????????????System.err.println（String.format（??
????????????????????“Incorret?expression:?%s\nError:?%s“?expression??
????????????????????e.getMessage（）））;??
????????}??
????}??
??
????private?void?processOperand（final?double?operand）?{??
????????numStack.push（operand）;??
????}??
??
????private?void?processOperator（final?char?currentOperator）?{??
????????this.currentOperator?=?currentOperator;??
????????this.opStackTop?=?opStack.peek（）;??
????????char?calMode?=?CALCULATE_MODE.getRule（currentOperator?opStackTop）;??
????????switch?（calMode）?{??
????????case?‘>‘:??
????????????processStackHigerPriorityOperator（）;??
????????????break;??
????????case?‘<‘:??
????????????processStackLowerPriorityOperator（）;??
????????????break;??
????????case?‘=‘:??
????????????processStackEqualPriorityOperator（）;??
????????????break;??
????????default:??
????????????break;??
????????}??
????}??
??
????private?void?processStackLowerPriorityOperator（）?{??
????????opStack.push（currentOperator）;??
????}??
??
????private?void?processStackHigerPriorityOperator（）?{??
????????numStack.push（CALCULATE.exec（opStack.pop（）?numStack.pop（）??
????????????????numStack.pop（）））;??
????????--i;?//?pointer?back?to?the?previous?operator.??
????}??
??
????private?void?processStackEqualPriorityOperator（）?{??
????????if?（TERMINATE_TOKENS.START_END_MARK?==?currentOperator）?{??
????????????System.out.println（expression?+?“?=?“?+?numStack.peek（））;??
????????}?else?if?（‘）‘?==?currentOperator）?{??
????????????opStack.pop（）;??
????????}??
????}??
??

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----

?????文件????????301??2014-06-18?09:27??Caculator02\.classpath

?????文件????????387??2014-06-17?14:06??Caculator02\.project

?????文件????????629??2014-06-17?14:06??Caculator02\.settings\org.eclipse.jdt.core.prefs

?????文件???????1344??2014-06-19?17:52??Caculator02\bin\CALCULATE.class

?????文件???????1859??2014-06-19?17:52??Caculator02\bin\CALCULATE_MODE.class

?????文件???????3429??2014-06-19?17:52??Caculator02\bin\Calculator.class

?????文件???????5962??2014-06-19?17:54??Caculator02\bin\Cindy.class

?????文件???????1724??2014-06-19?17:52??Caculator02\bin\Clear.class

?????文件???????1160??2014-06-19?17:52??Caculator02\bin\Dot.class

?????文件???????1537??2014-06-19?17:52??Caculator02\bin\Num.class

?????文件???????3066??2014-06-19?17:52??Caculator02\bin\Signs.class

?????文件???????1582??2014-06-19?17:52??Caculator02\bin\SM.class

?????文件???????2487??2014-06-19?17:52??Caculator02\bin\TERMINATE_TOKENS.class

?????文件???????2802??2014-06-19?17:52??Caculator02\bin\TOKENIZER.class

?????文件???????8509??2014-06-18?20:52??Caculator02\src\Calculator.java

?????文件???????6394??2014-06-19?17:54??Caculator02\src\Cindy.java

?????文件???????1360??2014-06-17?14:06??Caculator02\src\Clear.java

?????文件????????444??2014-06-17?14:06??Caculator02\src\Dot.java

?????文件????????790??2014-06-17?14:06??Caculator02\src\Num.java

?????文件???????3809??2014-06-18?20:58??Caculator02\src\Signs.java

?????文件????????842??2014-06-17?14:06??Caculator02\src\SM.java

?????目錄??????????0??2014-06-17?14:06??Caculator02\.settings

?????目錄??????????0??2014-06-19?17:52??Caculator02\bin

?????目錄??????????0??2014-06-18?21:07??Caculator02\src

?????目錄??????????0??2014-06-18?09:27??Caculator02

-----------?---------??----------?-----??----

????????????????50417????????????????????25