/*******************************************************************************
* Copyright (c) 2007 Exadel, Inc. and Red Hat, Inc.
* Distributed under license by Red Hat, Inc. All rights reserved.
* This program is 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:
* Exadel, Inc. and Red Hat, Inc. - initial API and implementation
******************************************************************************/
package org.jboss.tools.common.meta.constraint.impl;
import java.util.*;
import org.jboss.tools.common.model.XModelObjectConstants;
import org.jboss.tools.common.model.plugin.ModelMessages;
import org.w3c.dom.*;
public class XAttributeConstraintJavaName extends XAttributeConstraintProperties {
private static final String[] keywords = {"break", "case", //$NON-NLS-1$ //$NON-NLS-2$
"catch", "class", "const", "continue", "default", //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$ //$NON-NLS-5$
"else", "extends", XModelObjectConstants.FALSE, "final", "finally", "for", "if", //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$ //$NON-NLS-5$ //$NON-NLS-6$
"implements", "import", "instanceof", "interface", "new", //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$ //$NON-NLS-5$
"null", "package", "protected", "private", "public", "return", //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$ //$NON-NLS-5$ //$NON-NLS-6$
"static", "switch", "synchronized", "throw", "throws", "transient", //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$ //$NON-NLS-5$ //$NON-NLS-6$
XModelObjectConstants.TRUE, "try", "void", "volatile", "while"}; //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$
private static final String[] primitives = {
"boolean", "byte", "char", "double", "float", "int", "long", "short" //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$ //$NON-NLS-5$ //$NON-NLS-6$ //$NON-NLS-7$ //$NON-NLS-8$
};
private static final Set<String> keytable = new HashSet<String>();
private static final Set<String> primitiveSet = new HashSet<String>();
static {
for (int i = 0; i < keywords.length; i++) keytable.add(keywords[i]);
for (int i = 0; i < primitives.length; i++) primitiveSet.add(primitives[i]);
}
private Set<String> custom = null;
boolean allowPrimitiveTypes = false;
public void load(Element element) {
super.load(element);
String k = p.getProperty("keywords"); //$NON-NLS-1$
if(k == null) return;
StringTokenizer st = new StringTokenizer(k, ";,"); //$NON-NLS-1$
custom = new HashSet<String>();
while(st.hasMoreTokens()) custom.add(st.nextToken());
}
public XAttributeConstraintJavaName() {}
public boolean accepts(String value) {
if(value == null) return false;
if(value.length() == 0) return true;
if(!Character.isJavaIdentifierStart(value.charAt(0))) return false;
if(keytable.contains(value) && !XModelObjectConstants.TRUE.equals(p.getProperty("acceptKeyWord"))) return false; //$NON-NLS-1$
if(!allowPrimitiveTypes && primitiveSet.contains(value)) return false;
if(custom != null && custom.contains(value)) return false;
for (int i = 1; i < value.length(); i++) {
if(!Character.isJavaIdentifierPart(value.charAt(i))) return false;
}
return true;
}
public String getError(String value) {
return (value.length() == 0) ? (isRequired() ? ModelMessages.CONSTRAINT_NONEMPTY : null) :
accepts(value) ? null :
(keytable.contains(value)) ? ModelMessages.CONSTRAINT_NO_JAVA_KEYWORD :
(!allowPrimitiveTypes && primitiveSet.contains(value)) ? ModelMessages.CONSTRAINT_NO_JAVA_KEYWORD :
(custom != null && custom.contains(value)) ? ModelMessages.IS_A_RESERVED_WORD :
ModelMessages.CONSTRAINT_JAVA_NAME;
}
boolean isRequired() {
return attribute != null && "always".equals(attribute.getProperty("save")); //$NON-NLS-1$ //$NON-NLS-2$
}
public String getCorrectedValue(String value) {
if(value == null || value.length() == 0) return null;
if(XModelObjectConstants.TRUE.equals(getProperties().getProperty("acceptIncorrect"))) return value; //$NON-NLS-1$
StringBuffer sb = new StringBuffer();
boolean first = true;
for (int i = 0; i < value.length(); i++) {
char c = value.charAt(i);
if(first) {
if(!Character.isJavaIdentifierStart(c)) continue;
first = false;
} else if(!Character.isJavaIdentifierPart(c)) continue;
sb.append(c);
}
return (sb.length() == 0) ? null : sb.toString();
}
}