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comparison org.eclipse.core.databinding/src/org/eclipse/core/internal/databinding/conversion/StringToByteConverter.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 cast(C) 2005 db4objects Inc. http://www.db4o.com
3 *
4 * All rights reserved. This program and the accompanying materials
5 * are made available under the terms of the Eclipse Public License v1.0
6 * which accompanies this distribution, and is available at
7 * http://www.eclipse.org/legal/epl-v10.html
8 *
9 * Contributors:
10 * db4objects - Initial API and implementation
11 */
12 module org.eclipse.core.internal.databinding.conversion.StringToByteConverter;
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 StringToByteConverter : NumberFormatConverter {
25 private String outOfRangeMessage;
26 private NumberFormat numberFormat;
27 private bool primitive;
28
29 /**
30 * @param numberFormat
31 * @param toType
32 */
33 private this(NumberFormat numberFormat, ClassInfo toType) {
34 super(String.classinfo, toType, numberFormat);
35 primitive = toType.isPrimitive();
36 this.numberFormat = numberFormat;
37 }
38
39 /**
40 * @param numberFormat
41 * @param primitive
42 * @return converter
43 */
44 public static StringToByteConverter toByte(NumberFormat numberFormat,
45 bool primitive) {
46 return new StringToByteConverter(numberFormat, (primitive) ? Byte.TYPE : Byte.classinfo);
47 }
48
49 /**
50 * @param primitive
51 * @return converter
52 */
53 public static StringToByteConverter toByte(bool primitive) {
54 return toByte(NumberFormat.getIntegerInstance(), primitive);
55 }
56
57 /* (non-Javadoc)
58 * @see org.eclipse.core.databinding.conversion.IConverter#convert(java.lang.Object)
59 */
60 public Object convert(Object fromObject) {
61 ParseResult result = StringToNumberParser.parse(fromObject,
62 numberFormat, primitive);
63
64 if (result.getPosition() !is null) {
65 // this shouldn't happen in the pipeline as validation should catch
66 // it but anyone can call convert so we should return a properly
67 // formatted message in an exception
68 throw new IllegalArgumentException(StringToNumberParser
69 .createParseErrorMessage(cast(String) fromObject, result
70 .getPosition()));
71 } else if (result.getNumber() is null) {
72 // if an error didn't occur and the number is null then it's a boxed
73 // type and null should be returned
74 return null;
75 }
76
77 if (StringToNumberParser.inByteRange(result.getNumber())) {
78 return new Byte(result.getNumber().byteValue());
79 }
80
81 synchronized (this) {
82 if (outOfRangeMessage is null) {
83 outOfRangeMessage = StringToNumberParser
84 .createOutOfRangeMessage(new Bytecast(Byte.MIN_VALUE), new Bytecast(Byte.MAX_VALUE), numberFormat);
85 }
86
87 throw new IllegalArgumentException(outOfRangeMessage);
88 }
89 }
90 }