package org.eclipse.jdi.internal;

/*
 * (c) Copyright IBM Corp. 2000, 2001.
 * All Rights Reserved.
 */

import com.sun.jdi.*;
import com.sun.jdi.connect.*;
import com.sun.jdi.event.*;
import com.sun.jdi.request.*;
import org.eclipse.jdi.internal.connect.*;
import org.eclipse.jdi.internal.request.*;
import org.eclipse.jdi.internal.event.*;
import org.eclipse.jdi.internal.jdwp.*;
import org.eclipse.jdi.internal.spy.*;
import java.util.*;
import java.io.*;

/**
 * this class implements the corresponding interfaces
 * declared by the JDI specification. See the com.sun.jdi package
 * for more information.
 *
 */
public abstract class PrimitiveTypeImpl extends TypeImpl implements PrimitiveType {
	/**
	 * Creates new instance.
	 */
	public PrimitiveTypeImpl(String description, VirtualMachineImpl vmImpl, String name, String signature) {
		super(description, vmImpl, name, signature);
	}
	
	/**
	 * Creates new instance based on primitive signature.
	 */
	public static PrimitiveTypeImpl create(VirtualMachineImpl vmImpl, String signature) {
		// Notice that Primitive Types are not stored or cached because they don't 'remember' any information.

		// See JNI 1.1 Specification, Table 3-2 Java VM Type Signatures.
		switch (signature.charAt(0)) {
			case 'Z': return new BooleanTypeImpl(vmImpl);
			case 'B': return new ByteTypeImpl(vmImpl);
			case 'C': return new CharTypeImpl(vmImpl);
			case 'S': return new ShortTypeImpl(vmImpl);
			case 'I': return new IntegerTypeImpl(vmImpl);
			case 'J': return new LongTypeImpl(vmImpl);
			case 'F': return new FloatTypeImpl(vmImpl);
			case 'D': return new DoubleTypeImpl(vmImpl);
		}
		throw new InternalError("Invalid primitive signature: \"" + signature + "\"");
	}
	
	/**
	 * @returns primitive type tag.
	 */
	public abstract byte tag();
	
	/**
	 * @return Returns text representation of this type.
	 */
	public String name() {
		return fName;
	}

	/**
	 * @return JNI-style signature for this type.
	 */
	public String signature() {
		return fSignature;
	}

	/**
	 * @return Returns modifier bits.
	 */
	public int modifiers() {
		throw new InternalError("A PrimitiveType does not have modifiers.");
	}
}