NameValidator.java

/***** BEGIN LICENSE BLOCK *****
 * Version: CPL 1.0/GPL 2.0/LGPL 2.1
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 * License Version 1.0 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of
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 *
 * Software distributed under the License is distributed on an "AS
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 * Copyright (C) 2006 Mirko Stocker <me@misto.ch>
 * 
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package org.rubypeople.rdt.refactoring.util;

import java.util.regex.Pattern;

import org.jruby.lexer.yacc.RubyYaccLexer;

public class NameValidator {

	private static final String localVariableRegexp = "[a-z_]\\w*"; //$NON-NLS-1$

	private static final String methodNameRegexp = "[a-zA-Z_]\\w*[!?=]?"; //$NON-NLS-1$
	
	private static final String classNameRegexp = "[A-Z_]\\w*"; //$NON-NLS-1$

	public static boolean isValidLocalVariableName(String name) {
		return validate(localVariableRegexp, name);
	}

	public static boolean isValidMethodName(String name) {
		return validate(methodNameRegexp, name);
	}
	
	public static boolean isValidConstName(String name) {
		return validate(classNameRegexp, name);
	}

	private static boolean validate(String regexp, String stringToValidate) {
		boolean valid = Pattern.compile(regexp).matcher(stringToValidate).matches();
		return valid && RubyYaccLexer.getKeyword(stringToValidate) == null;
	}

	public static boolean isValidConstantName(String newName) {
		// FIXME Check for valid constant name
		return isValidConstName(newName);
	}

}