[161] | 1 | package org.expeditee.simple;
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| 2 |
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| 3 | import java.text.NumberFormat;
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| 4 | import java.util.Observable;
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| 5 | import java.util.Observer;
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| 6 |
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| 7 | import org.expeditee.gui.AttributeUtils;
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| 8 | import org.expeditee.gui.AttributeValuePair;
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| 9 | import org.expeditee.gui.Frame;
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| 10 | import org.expeditee.items.Text;
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| 11 | import org.nfunk.jep.JEP;
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| 12 | import org.nfunk.jep.Variable;
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| 13 |
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| 14 | public class ExpediteeJEP extends JEP {
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| 15 | Observer observer = new Observer() {
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| 16 | private String _attribute = "";
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| 17 |
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| 18 | public void update(Observable ob, Object o) {
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| 19 | _attribute = ((Variable) o).getName() + ": ";
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| 20 | }
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| 21 |
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| 22 | @Override
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| 23 | public String toString() {
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| 24 | return _attribute;
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| 25 | }
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| 26 | };
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| 27 |
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| 28 | public ExpediteeJEP() {
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| 29 | super();
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| 30 | addStandardFunctions();
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| 31 | addStandardConstants();
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| 32 | setImplicitMul(true);
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| 33 | setAllowAssignment(true);
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| 34 | setAllowUndeclared(true);
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| 35 | }
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| 36 |
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| 37 | public void addObserver() {
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| 38 | getSymbolTable().addObserver(observer);
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| 39 | getSymbolTable().addObserverToExistingVariables(observer);
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| 40 | }
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| 41 |
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| 42 | public String getResult() {
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| 43 | Double result = getValue();
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| 44 | if(result.isNaN()){
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| 45 | return null;
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| 46 | }
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| 47 | NumberFormat nf = NumberFormat.getInstance();
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| 48 | nf.setMinimumFractionDigits(0);
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| 49 | nf.setMaximumFractionDigits(15);
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| 50 | return observer.toString() + nf.format(result);
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| 51 | }
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| 52 |
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| 53 | public void addVariables(Frame frame) {
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| 54 | if(frame == null)
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| 55 | return;
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| 56 | // Check for variables
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| 57 | for (Text t : frame.getTextItems()) {
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| 58 | AttributeValuePair avp = AttributeUtils.getPair(t.getText());
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| 59 | if (avp != null) {
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| 60 | addVariable(avp.getAttribute(), avp
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| 61 | .getDoubleValue());
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| 62 | }
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| 63 | }
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| 64 | }
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| 65 | }
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