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1 /*******************************************************************************
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2 * Copyright (c) 2007 IBM Corporation and others.
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3 * All rights reserved. This program and the accompanying materials
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4 * are made available under the terms of the Eclipse Public License v1.0
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5 * which accompanies this distribution, and is available at
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6 * http://www.eclipse.org/legal/epl-v10.html
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7 *
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8 * Contributors:
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9 * IBM Corporation - initial API and implementation
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10 ******************************************************************************/
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11
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12 module org.eclipse.core.internal.databinding.conversion.StringToShortConverter;
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13
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14 import java.lang.all;
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15
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16 import org.eclipse.core.internal.databinding.conversion.StringToNumberParser.ParseResult;
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17 import org.eclipse.core.internal.databinding.validation.NumberFormatConverter;
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18
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19 import com.ibm.icu.text.NumberFormat;
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20
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21 /**
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22 * @since 1.0
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23 */
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24 public class StringToShortConverter : NumberFormatConverter {
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25 private final NumberFormat numberFormat;
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26 private final bool primitive;
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27
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28 private String outOfRangeMessage;
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29
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30 /**
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31 * Constructs a new instance.
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32 */
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33 private this(NumberFormat numberFormat, ClassInfo toType) {
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34 super(String.classinfo, toType, numberFormat);
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35 this.numberFormat = numberFormat;
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36 primitive = toType.isPrimitive();
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37 }
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38
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39 /*
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40 * (non-Javadoc)
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41 *
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42 * @see org.eclipse.core.databinding.conversion.IConverter#convert(java.lang.Object)
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43 */
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44 public Object convert(Object fromObject) {
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45 ParseResult result = StringToNumberParser.parse(fromObject,
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46 numberFormat, primitive);
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47
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48 if (result.getPosition() !is null) {
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49 // this shouldn't happen in the pipeline as validation should catch
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50 // it but anyone can call convert so we should return a properly
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51 // formatted message in an exception
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52 throw new IllegalArgumentException(StringToNumberParser
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53 .createParseErrorMessage(cast(String) fromObject, result
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54 .getPosition()));
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55 } else if (result.getNumber() is null) {
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56 // if an error didn't occur and the number is null then it's a boxed
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57 // type and null should be returned
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58 return null;
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59 }
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60
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61 if (StringToNumberParser.inShortRange(result.getNumber())) {
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62 return new Short(result.getNumber().shortValue());
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63 }
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64
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65 synchronized (this) {
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66 if (outOfRangeMessage is null) {
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67 outOfRangeMessage = StringToNumberParser
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68 .createOutOfRangeMessage(new Shortcast(Short.MIN_VALUE), new Shortcast(Short.MAX_VALUE), numberFormat);
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69 }
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70
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71 throw new IllegalArgumentException(outOfRangeMessage);
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72 }
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73 }
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74
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75 /**
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76 * @param primitive
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77 * <code>true</code> if the convert to type is a short
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78 * @return to Short converter for the default locale
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79 */
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80 public static StringToShortConverter toShort(bool primitive) {
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81 return toShort(NumberFormat.getIntegerInstance(), primitive);
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82 }
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83
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84 /**
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85 * @param numberFormat
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86 * @param primitive
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87 * @return to Short converter with the provided numberFormat
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88 */
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89 public static StringToShortConverter toShort(NumberFormat numberFormat,
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90 bool primitive) {
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91 return new StringToShortConverter(numberFormat,
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92 (primitive) ? Short.TYPE : Short.classinfo);
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93 }
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94 }
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