/*
 * ArrayAllocationExpression.java 1.0
 *
 *
 * Jun 20, 1997 by mich
 * Sep 29, 1997 by bv
 * Oct 10, 1997 by mich
 *
 * @see io.devnulllabs.openjava.ptree.ParseTree
 * @version 1.0 last updated:  Oct 10, 1997
 * @author  Michiaki Tatsubori
 */
package io.devnulllabs.openjava.ptree;

import io.devnulllabs.openjava.mop.Environment;
import io.devnulllabs.openjava.mop.OJClass;
import io.devnulllabs.openjava.ptree.util.ParseTreeVisitor;

/**
 * The <code>ArrayAllocationExpression</code> class represents
 * an expression which allocates a new array object.
 * <br>
 * This expression is like:
 * <br><blockquote><pre>
 *     new Object[2][3]
 * </pre></blockquote><br>
 * or:
 * <br><blockquote><pre>
 *     new String[]{ "this", "is", "a", "test" }
 * </pre></blockquote><br>
 * The latter is supported from JDK 1.1.
 *
 * @see io.devnulllabs.openjava.ptree.Expression
 * @see io.devnulllabs.openjava.ptree.TypeName
 * @see io.devnulllabs.openjava.ptree.ExpressionList
 * @see io.devnulllabs.openjava.ptree.ArrayInitializer
 */
public class ArrayAllocationExpression extends NonLeaf implements Expression {

    /**
     * Allocates a new ptree object.
     *
     * @param  typename  the type name.
     * @param  dimlist  the dimension expression list.
     */
    public ArrayAllocationExpression(
        TypeName typename,
        ExpressionList dimlist) {
        this(typename, dimlist, null);
    }

    /**
     * Allocates a new ptree object.
     *
     * @param  typename  the type name.
     * @param  dimlist  the dimension expression list.
     * @param  ainit  the array initializer.
     *                If this is null, no initializer will be
     *                provided this allocation with.
     */
    public ArrayAllocationExpression(
        TypeName typename,
        ExpressionList dimlist,
        ArrayInitializer ainit) {
        super();
        if (dimlist == null)
            dimlist = new ExpressionList();
        set(typename, dimlist, ainit);
    }

    public ArrayAllocationExpression(OJClass type, ExpressionList args) {
        this(TypeName.forOJClass(type), args);
    }

    public ArrayAllocationExpression(
        OJClass type,
        ExpressionList args,
        ArrayInitializer ainit) {
        this(TypeName.forOJClass(type), args, ainit);
    }

    ArrayAllocationExpression() {
        super();
    }

    /**
     * Gets the type name of the array.
     *
     * @return  the type name of the array.
     */
    public TypeName getTypeName() {
        return (TypeName) elementAt(0);
    }

    /**
     * Sets the type name of the array.
     *
     * @param  typename  the type name of the array.
     */
    public void setTypeName(TypeName typename) {
        setElementAt(typename, 0);
    }

    /**
     * Gets the dimexpr list of the array.
     *
     * @return  the dimexpr list of the array.
     */
    public ExpressionList getDimExprList() {
        return (ExpressionList) elementAt(1);
    }

    /**
     * Sets the dimexpr list of the array.
     *
     * @param  dimlist  the dimexpr list of the array.
     */
    public void setDimExprList(ExpressionList dimlist) {
        setElementAt(dimlist, 1);
    }

    /**
     * Gets the initializer of this array allocation.
     *
     * @return  the initializer.
     */
    public ArrayInitializer getInitializer() {
        return (ArrayInitializer) elementAt(2);
    }

    /**
     * Sets the initializer of this array allocation.
     *
     * @param  ainit  the initializer.
     *                If this is null, no initializer will be set.
     */
    public void setInitializer(ArrayInitializer ainit) {
        setElementAt(ainit, 2);
    }

    public OJClass getType(Environment env) throws Exception {
        TypeName tname = getTypeName();
        String dims = TypeName.stringFromDimension(getDimExprList().size());
        return env.lookupClass(env.toQualifiedName(tname + dims));
    }

    public void accept(ParseTreeVisitor v) throws ParseTreeException {
        v.visit(this);
    }

}