erjang.beam.BuiltInFunction.java Source code

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Here is the source code for erjang.beam.BuiltInFunction.java

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/**
 * This file is part of Erjang - A JVM-based Erlang VM
 *
 * Copyright (c) 2009 by Trifork
 *
 * 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 erjang.beam;

import java.lang.reflect.Modifier;

import kilim.Pausable;

import org.objectweb.asm.Type;
import org.objectweb.asm.commons.Method;

/**
 * 
 */
public class BuiltInFunction {
    public final Type owner;
    public final java.lang.reflect.Method javaMethod;
    public final Method method;
    public final boolean isVirtual;
    public final boolean isPausable;

    /* (non-Javadoc)
     * @see java.lang.Object#toString()
     */
    @Override
    public String toString() {
        return method.toString();
    }

    @Override
    public int hashCode() {
        return toString().hashCode();
    }

    /**
     * @param m
     */
    public BuiltInFunction(java.lang.reflect.Method m) {
        this.javaMethod = m;
        this.owner = Type.getType(m.getDeclaringClass());
        this.method = new Method(m.getName(), Type.getType(m.getReturnType()), Type.getArgumentTypes(m));
        isVirtual = !Modifier.isStatic(m.getModifiers());
        boolean p = false;
        for (Class c : m.getExceptionTypes()) {
            if (Pausable.class.equals(c)) {
                p = true;
                break;
            }
        }
        isPausable = p;
    }

    /**
     * @return
     */
    public Type[] getArgumentTypes() {
        return method.getArgumentTypes();
    }

    /**
     * @return
     */
    public String getName() {
        return method.getName();
    }

    /**
     * @return
     */
    public String getDescriptor() {
        return method.getDescriptor();
    }

    /**
     * @return
     */
    public Type getReturnType() {
        return method.getReturnType();
    }

    public Type getOwner() {
        return owner;
    }

    /**
     * @return
     */
    public boolean isVirtual() {
        return isVirtual;
    }

    public boolean isPausable() {
        return isPausable;
    }

}