Scala example source code file (SourceValue.java)

This example Scala source code file (SourceValue.java) is included in my "Source Code Warehouse" project. The intent of this project is to help you more easily find Scala source code examples by using tags.

All credit for the original source code belongs to scala-lang.org; I'm just trying to make examples easier to find. (For my Scala work, see my Scala examples and tutorials.)

Scala tags/keywords

abstractinsnnode, asm, object, override, set, smallset, sourcevalue, value

The SourceValue.java Scala example source code

/***
 * ASM: a very small and fast Java bytecode manipulation framework
 * Copyright (c) 2000-2011 INRIA, France Telecom
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the copyright holders nor the names of its
 *    contributors may be used to endorse or promote products derived from
 *    this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 */
package scala.tools.asm.tree.analysis;

import java.util.Set;

import scala.tools.asm.tree.AbstractInsnNode;

/**
 * A {@link Value} that is represented by its type in a two types type system.
 * This type system distinguishes the ONEWORD and TWOWORDS types.
 *
 * @author Eric Bruneton
 */
public class SourceValue implements Value {

    /**
     * The size of this value.
     */
    public final int size;

    /**
     * The instructions that can produce this value. For example, for the Java
     * code below, the instructions that can produce the value of <tt>i</tt> at
     * line 5 are the txo ISTORE instructions at line 1 and 3:
     *
     * <pre>
     * 1: i = 0;
     * 2: if (...) {
     * 3:   i = 1;
     * 4: }
     * 5: return i;
     * </pre>
     *
     * This field is a set of {@link AbstractInsnNode} objects.
     */
    public final Set<AbstractInsnNode> insns;

    public SourceValue(final int size) {
        this(size, SmallSet.<AbstractInsnNode> emptySet());
    }

    public SourceValue(final int size, final AbstractInsnNode insn) {
        this.size = size;
        this.insns = new SmallSet<AbstractInsnNode>(insn, null);
    }

    public SourceValue(final int size, final Set<AbstractInsnNode> insns) {
        this.size = size;
        this.insns = insns;
    }

    public int getSize() {
        return size;
    }

    @Override
    public boolean equals(final Object value) {
        if (!(value instanceof SourceValue)) {
            return false;
        }
        SourceValue v = (SourceValue) value;
        return size == v.size && insns.equals(v.insns);
    }

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