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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.IntegerToStringConverter;
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13
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14 import java.lang.all;
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15 import java.nonstandard.RuntimeTraits;
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16
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17 import org.eclipse.core.databinding.conversion.Converter;
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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 * Converts a value that is an integer, non decimal, to a String using a
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23 * NumberFormat.
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24 * <p>
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25 * This class is a temporary as this ability exists in NumberToStringConverter
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26 * except that short and byte are missing.
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27 * </p>
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28 *
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29 * @since 1.0
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30 */
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31 public class IntegerToStringConverter : Converter {
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32 private final bool primitive;
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33 private final NumberFormat numberFormat;
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34 private final TypeInfo boxedType;
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35
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36 /**
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37 * @param numberFormat
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38 * @param fromType
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39 * @param boxedType
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40 */
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41 private this(NumberFormat numberFormat, TypeInfo fromType,
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42 TypeInfo boxedType) {
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43 super(fromType, typeid(StringCls));
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44 this.primitive = isJavaPrimitive(fromType);
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45 this.numberFormat = numberFormat;
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46 this.boxedType = boxedType;
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47 }
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48
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49 /*
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50 * (non-Javadoc)
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51 *
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52 * @see org.eclipse.core.databinding.conversion.IConverter#convert(java.lang.Object)
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53 */
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54 public Object convert(Object fromObject) {
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55 // Null is allowed when the type is not primitve.
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56 if (fromObject is null && !primitive) {
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57 return stringcast(""); //$NON-NLS-1$
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58 }
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59
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60 if (!isImplicitly(fromObject.classinfo, boxedType.classinfo)) {
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61 throw new IllegalArgumentException(
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62 Format("'fromObject' is not of type [{}].", boxedType)); //$NON-NLS-1$//$NON-NLS-2$
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63 }
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64
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65 return stringcast(numberFormat.format((cast(Number) fromObject).longValue()));
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66 }
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67
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68 /**
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69 * @param primitive
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70 * @return converter
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71 */
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72 public static IntegerToStringConverter fromShort(bool primitive) {
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73 return fromShort(NumberFormat.getIntegerInstance(), primitive);
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74 }
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75
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76 /**
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77 * @param numberFormat
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78 * @param primitive
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79 * @return converter
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80 */
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81 public static IntegerToStringConverter fromShort(NumberFormat numberFormat,
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82 bool primitive) {
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83 return new IntegerToStringConverter(numberFormat,
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84 primitive ? Short.TYPE : typeid(Short), typeid(Short));
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85 }
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86
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87 /**
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88 * @param primitive
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89 * @return converter
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90 */
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91 public static IntegerToStringConverter fromByte(bool primitive) {
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92 return fromByte(NumberFormat.getIntegerInstance(), primitive);
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93 }
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94
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95 /**
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96 * @param numberFormat
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97 * @param primitive
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98 * @return converter
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99 */
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100 public static IntegerToStringConverter fromByte(NumberFormat numberFormat,
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101 bool primitive) {
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102 return new IntegerToStringConverter(numberFormat, primitive ? Byte.TYPE
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103 : typeid(Byte), typeid(Byte));
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104 }
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105 }
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