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comparison org.eclipse.core.databinding/src/org/eclipse/core/internal/databinding/conversion/StringToShortConverter.d @ 78:0a55d2d5a946

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Added file for databinding
author Frank Benoit <benoit@tionex.de>
date Tue, 14 Apr 2009 11:35:29 +0200
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children 383ce7bd736b
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76:f05e6e8b2f2d 78:0a55d2d5a946
1 /*******************************************************************************
2 * Copyright (c) 2007 IBM Corporation and others.
3 * All rights reserved. This program and the accompanying materials
4 * are made available under the terms of the Eclipse Public License v1.0
5 * which accompanies this distribution, and is available at
6 * http://www.eclipse.org/legal/epl-v10.html
7 *
8 * Contributors:
9 * IBM Corporation - initial API and implementation
10 ******************************************************************************/
11
12 module org.eclipse.core.internal.databinding.conversion.StringToShortConverter;
13
14 import java.lang.all;
15
16 import org.eclipse.core.internal.databinding.conversion.StringToNumberParser.ParseResult;
17 import org.eclipse.core.internal.databinding.validation.NumberFormatConverter;
18
19 import com.ibm.icu.text.NumberFormat;
20
21 /**
22 * @since 1.0
23 */
24 public class StringToShortConverter : NumberFormatConverter {
25 private final NumberFormat numberFormat;
26 private final bool primitive;
27
28 private String outOfRangeMessage;
29
30 /**
31 * Constructs a new instance.
32 */
33 private this(NumberFormat numberFormat, ClassInfo toType) {
34 super(String.classinfo, toType, numberFormat);
35 this.numberFormat = numberFormat;
36 primitive = toType.isPrimitive();
37 }
38
39 /*
40 * (non-Javadoc)
41 *
42 * @see org.eclipse.core.databinding.conversion.IConverter#convert(java.lang.Object)
43 */
44 public Object convert(Object fromObject) {
45 ParseResult result = StringToNumberParser.parse(fromObject,
46 numberFormat, primitive);
47
48 if (result.getPosition() !is null) {
49 // this shouldn't happen in the pipeline as validation should catch
50 // it but anyone can call convert so we should return a properly
51 // formatted message in an exception
52 throw new IllegalArgumentException(StringToNumberParser
53 .createParseErrorMessage(cast(String) fromObject, result
54 .getPosition()));
55 } else if (result.getNumber() is null) {
56 // if an error didn't occur and the number is null then it's a boxed
57 // type and null should be returned
58 return null;
59 }
60
61 if (StringToNumberParser.inShortRange(result.getNumber())) {
62 return new Short(result.getNumber().shortValue());
63 }
64
65 synchronized (this) {
66 if (outOfRangeMessage is null) {
67 outOfRangeMessage = StringToNumberParser
68 .createOutOfRangeMessage(new Shortcast(Short.MIN_VALUE), new Shortcast(Short.MAX_VALUE), numberFormat);
69 }
70
71 throw new IllegalArgumentException(outOfRangeMessage);
72 }
73 }
74
75 /**
76 * @param primitive
77 * <code>true</code> if the convert to type is a short
78 * @return to Short converter for the default locale
79 */
80 public static StringToShortConverter toShort(bool primitive) {
81 return toShort(NumberFormat.getIntegerInstance(), primitive);
82 }
83
84 /**
85 * @param numberFormat
86 * @param primitive
87 * @return to Short converter with the provided numberFormat
88 */
89 public static StringToShortConverter toShort(NumberFormat numberFormat,
90 bool primitive) {
91 return new StringToShortConverter(numberFormat,
92 (primitive) ? Short.TYPE : Short.classinfo);
93 }
94 }