--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/org.eclipse.core.databinding/src/org/eclipse/core/internal/databinding/validation/AbstractStringToNumberValidator.d	Tue Apr 14 11:35:29 2009 +0200
@@ -0,0 +1,99 @@
+/*******************************************************************************
+ * Copyright (c) 2007 IBM Corporation and others.
+ * 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:
+ *     IBM Corporation - initial API and implementation
+ ******************************************************************************/
+
+module org.eclipse.core.internal.databinding.validation.AbstractStringToNumberValidator;
+
+import java.lang.all;
+
+import org.eclipse.core.databinding.validation.IValidator;
+import org.eclipse.core.databinding.validation.ValidationStatus;
+import org.eclipse.core.internal.databinding.conversion.StringToNumberParser;
+import org.eclipse.core.internal.databinding.conversion.StringToNumberParser.ParseResult;
+import org.eclipse.core.runtime.IStatus;
+import org.eclipse.core.runtime.Status;
+
+/**
+ * Validates a number that is to be converted by a {@link NumberFormatConverter}.
+ * Validation is comprised of parsing the String and range checks.
+ * 
+ * @since 1.0
+ */
+public abstract class AbstractStringToNumberValidator : IValidator {
+    private final NumberFormatConverter converter;
+    private final bool toPrimitive;
+
+    private final Number min;
+    private final Number max;
+
+    private String outOfRangeMessage;
+
+    /**
+     * Constructs a new instance.
+     * 
+     * @param converter converter and thus formatter to be used in validation
+     * @param min minimum value, used for reporting a range error to the user
+     * @param max maximum value, used for reporting a range error to the user
+     */
+    protected this(NumberFormatConverter converter,
+            Number min, Number max) {
+        this.converter = converter;
+        this.min = min;
+        this.max = max;
+
+        if (null !is cast(ClassInfo)converter.getToType()) {
+            ClassInfo clazz = cast(ClassInfo) converter.getToType();
+            toPrimitive = clazz.isPrimitive();
+        } else {
+            toPrimitive = false;
+        }
+    }
+
+    /**
+     * Validates the provided <code>value</code>.  An error status is returned if:
+     * <ul>
+     * <li>The value cannot be parsed.</li>
+     * <li>The value is out of range.</li>
+     * </ul>
+     * 
+     * @see org.eclipse.core.databinding.validation.IValidator#validate(java.lang.Object)
+     */
+    public final IStatus validate(Object value) {
+        ParseResult result = StringToNumberParser.parse(value, converter
+                .getNumberFormat(), toPrimitive);
+
+        if (result.getNumber() !is null) {
+            if (!isInRange(result.getNumber())) {
+                if (outOfRangeMessage is null) {
+                    outOfRangeMessage = StringToNumberParser
+                            .createOutOfRangeMessage(min, max, converter
+                                    .getNumberFormat());
+                }
+
+                return ValidationStatus.error(outOfRangeMessage);
+            }
+        } else if (result.getPosition() !is null) {
+            String parseErrorMessage = StringToNumberParser.createParseErrorMessage(
+                    cast(String) value, result.getPosition());
+
+            return ValidationStatus.error(parseErrorMessage);
+        }
+
+        return Status.OK_STATUS;
+    }
+
+    /**
+     * Invoked by {@link #validatecast(Object)} when the range is to be validated.
+     * 
+     * @param number
+     * @return <code>true</code> if in range
+     */
+    protected abstract bool isInRange(Number number);
+}