Mercurial > projects > dwt2
diff org.eclipse.core.databinding/src/org/eclipse/core/internal/databinding/conversion/StringToByteConverter.d @ 78:0a55d2d5a946
Added file for databinding
author | Frank Benoit <benoit@tionex.de> |
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date | Tue, 14 Apr 2009 11:35:29 +0200 |
parents | |
children | 383ce7bd736b |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/org.eclipse.core.databinding/src/org/eclipse/core/internal/databinding/conversion/StringToByteConverter.d Tue Apr 14 11:35:29 2009 +0200 @@ -0,0 +1,90 @@ +/* + * Copyright cast(C) 2005 db4objects Inc. http://www.db4o.com + * + * All rights reserved. This program and the accompanying materials + * are made available under the terms of the Eclipse Public License v1.0 + * which accompanies this distribution, and is available at + * http://www.eclipse.org/legal/epl-v10.html + * + * Contributors: + * db4objects - Initial API and implementation + */ +module org.eclipse.core.internal.databinding.conversion.StringToByteConverter; + +import java.lang.all; + +import org.eclipse.core.internal.databinding.conversion.StringToNumberParser.ParseResult; +import org.eclipse.core.internal.databinding.validation.NumberFormatConverter; + +import com.ibm.icu.text.NumberFormat; + +/** + * @since 1.0 + */ +public class StringToByteConverter : NumberFormatConverter { + private String outOfRangeMessage; + private NumberFormat numberFormat; + private bool primitive; + + /** + * @param numberFormat + * @param toType + */ + private this(NumberFormat numberFormat, ClassInfo toType) { + super(String.classinfo, toType, numberFormat); + primitive = toType.isPrimitive(); + this.numberFormat = numberFormat; + } + + /** + * @param numberFormat + * @param primitive + * @return converter + */ + public static StringToByteConverter toByte(NumberFormat numberFormat, + bool primitive) { + return new StringToByteConverter(numberFormat, (primitive) ? Byte.TYPE : Byte.classinfo); + } + + /** + * @param primitive + * @return converter + */ + public static StringToByteConverter toByte(bool primitive) { + return toByte(NumberFormat.getIntegerInstance(), primitive); + } + + /* (non-Javadoc) + * @see org.eclipse.core.databinding.conversion.IConverter#convert(java.lang.Object) + */ + public Object convert(Object fromObject) { + ParseResult result = StringToNumberParser.parse(fromObject, + numberFormat, primitive); + + if (result.getPosition() !is null) { + // this shouldn't happen in the pipeline as validation should catch + // it but anyone can call convert so we should return a properly + // formatted message in an exception + throw new IllegalArgumentException(StringToNumberParser + .createParseErrorMessage(cast(String) fromObject, result + .getPosition())); + } else if (result.getNumber() is null) { + // if an error didn't occur and the number is null then it's a boxed + // type and null should be returned + return null; + } + + if (StringToNumberParser.inByteRange(result.getNumber())) { + return new Byte(result.getNumber().byteValue()); + } + + synchronized (this) { + if (outOfRangeMessage is null) { + outOfRangeMessage = StringToNumberParser + .createOutOfRangeMessage(new Bytecast(Byte.MIN_VALUE), new Bytecast(Byte.MAX_VALUE), numberFormat); + } + + throw new IllegalArgumentException(outOfRangeMessage); + } + } +}