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/*
 * Copyright 2003-2007 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package groovy.lang;

import org.codehaus.groovy.runtime.InvokerHelper;
import org.codehaus.groovy.runtime.MethodRankHelper;

/**
 * An exception occurred if a dynamic method dispatch fails with an unknown method.
 * 
 * Note that the Missing*Exception classes were named for consistency and
 * to avoid conflicts with JDK exceptions of the same name.
 *
 * @author James Strachan
 * @version $Revision$
 */
public class MissingMethodException extends GroovyRuntimeException {

    private final String method;
    private final Class type;
    private final boolean isStatic;

    public Object[] getArguments() {
        return arguments;
    }

    private final Object arguments[];

    public MissingMethodException(String method, Class type, Object[] arguments) {
        this(method, type, arguments, false);
    }

    public MissingMethodException(String method, Class type, Object[] arguments, boolean isStatic) {
        super();
        this.method = method;
        this.type = type;
        this.isStatic = isStatic;
        this.arguments = arguments;
    }

    public String getMessage() {
        return "No signature of method: "
                + (isStatic ? "static " : "")
                + type.getName()
                + "."
                + method
                + "() is applicable for argument types: ("
                + InvokerHelper.toTypeString(arguments)
                + ") values: "
                + InvokerHelper.format(arguments, false, 40)
                + MethodRankHelper.getMethodSuggestionString(method, type, arguments);
    }

    /**
     * @return the name of the method that could not be found
     */
    public String getMethod() {
        return method;
    }

    /**
     * @return The type on which the method was attempted to be called
     */
    public Class getType() {
        return type;
    }

    /**
     * @return Whether the method was called in a static way,
     *         i.e. on a class rather than an object.
     */
    public boolean isStatic() {
        return isStatic;
    }
}