/*
 * Copyright (c) 2002-2008 LWJGL Project
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 * * Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 *
 * * 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.
 *
 * * Neither the name of 'LWJGL' 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
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 * 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 org.lwjgl.util.generator.openal;

/**
 *
 * The OpenAL specific generator behaviour
 *
 * @author elias_naur <elias_naur@users.sourceforge.net>
 * @version $Revision: 2983 $
 * $Id: ALTypeMap.java 2983 2008-04-07 18:36:09Z matzon $
 */

import org.lwjgl.util.generator.Signedness;
import org.lwjgl.util.generator.TypeMap;

import com.sun.mirror.declaration.*;
import com.sun.mirror.type.*;

import java.io.*;
import java.lang.annotation.Annotation;
import java.util.*;
import java.nio.*;

public class ALTypeMap implements TypeMap {
	private static final Map<Class, PrimitiveType.Kind> native_types_to_primitive;

	static {
		native_types_to_primitive = new HashMap<Class, PrimitiveType.Kind>();
		native_types_to_primitive.put(ALboolean.class, PrimitiveType.Kind.BOOLEAN);
		native_types_to_primitive.put(ALbyte.class, PrimitiveType.Kind.BYTE);
		native_types_to_primitive.put(ALenum.class, PrimitiveType.Kind.INT);
		native_types_to_primitive.put(ALfloat.class, PrimitiveType.Kind.FLOAT);
		native_types_to_primitive.put(ALdouble.class, PrimitiveType.Kind.DOUBLE);
		native_types_to_primitive.put(ALint.class, PrimitiveType.Kind.INT);
		native_types_to_primitive.put(ALshort.class, PrimitiveType.Kind.SHORT);
		native_types_to_primitive.put(ALsizei.class, PrimitiveType.Kind.INT);
		native_types_to_primitive.put(ALubyte.class, PrimitiveType.Kind.BYTE);
		native_types_to_primitive.put(ALuint.class, PrimitiveType.Kind.INT);
		native_types_to_primitive.put(ALvoid.class, PrimitiveType.Kind.BYTE);
	}

	public PrimitiveType.Kind getPrimitiveTypeFromNativeType(Class native_type) {
		PrimitiveType.Kind kind = native_types_to_primitive.get(native_type);
		if (kind == null)
			throw new RuntimeException("Unsupported type " + native_type);
		return kind;
	}

	public Signedness getSignednessFromType(Class type) {
		if (ALuint.class.equals(type))
			return Signedness.UNSIGNED;
		else if (ALint.class.equals(type))
			return Signedness.SIGNED;
		else if (ALshort.class.equals(type))
			return Signedness.SIGNED;
		else if (ALbyte.class.equals(type))
			return Signedness.SIGNED;
		else
			return Signedness.NONE;
	}

	public String translateAnnotation(Class annotation_type) {
		if (annotation_type.equals(ALuint.class))
			return "i";
		else if (annotation_type.equals(ALint.class))
			return "i";
		else if (annotation_type.equals(ALshort.class))
			return "s";
		else if (annotation_type.equals(ALbyte.class))
			return "b";
		else if (annotation_type.equals(ALfloat.class))
			return "f";
		else if (annotation_type.equals(ALdouble.class))
			return "d";
		else if (annotation_type.equals(ALboolean.class) || annotation_type.equals(ALvoid.class))
			return "";
		else
			throw new RuntimeException(annotation_type + " is not allowed");
	}

	public Class getNativeTypeFromPrimitiveType(PrimitiveType.Kind kind) {
		Class type;
		switch (kind) {
			case INT:
				type = ALint.class;
				break;
			case FLOAT:
				type = ALfloat.class;
				break;
			case DOUBLE:
				type = ALdouble.class;
				break;
			case SHORT:
				type = ALshort.class;
				break;
			case BYTE:
				type = ALbyte.class;
				break;
			case BOOLEAN:
				type = ALboolean.class;
				break;
			default:
				throw new RuntimeException(kind + " is not allowed");
		}
		return type;
	}

	private static Class[] getValidBufferTypes(Class type) {
		if (type.equals(IntBuffer.class))
			return new Class[]{ALenum.class, ALint.class, ALsizei.class, ALuint.class};
		else if (type.equals(FloatBuffer.class))
			return new Class[]{ALfloat.class};
		else if (type.equals(ByteBuffer.class))
			return new Class[]{ALboolean.class, ALbyte.class, ALvoid.class};
		else if (type.equals(ShortBuffer.class))
			return new Class[]{ALshort.class};
		else if (type.equals(DoubleBuffer.class))
			return new Class[]{ALdouble.class};
		else
			return new Class[]{};
	}

	private static Class[] getValidPrimitiveTypes(Class type) {
		if (type.equals(int.class))
			return new Class[]{ALenum.class, ALint.class, ALsizei.class, ALuint.class};
		else if (type.equals(double.class))
			return new Class[]{ALdouble.class};
		else if (type.equals(float.class))
			return new Class[]{ALfloat.class};
		else if (type.equals(short.class))
			return new Class[]{ALshort.class};
		else if (type.equals(byte.class))
			return new Class[]{ALbyte.class};
		else if (type.equals(boolean.class))
			return new Class[]{ALboolean.class};
		else if (type.equals(void.class))
			return new Class[]{ALvoid.class};
		else
			return new Class[]{};
	}

	public void printCapabilitiesInit(final PrintWriter writer) {
		throw new UnsupportedOperationException();
	}

	public String getCapabilities() {
		throw new UnsupportedOperationException();
	}

	public String getAPIUtilParam(boolean comma) {
		return "";
	}

	public void printErrorCheckMethod(final PrintWriter writer, final MethodDeclaration method, final String tabs) {
		writer.println(tabs + "Util.checkALError();");
	}

	public String getRegisterNativesFunctionName() {
		return "extal_InitializeClass";
	}

	public String getTypedefPostfix() {
		return "";
	}

	public String getFunctionPrefix() {
		return "ALAPIENTRY";
	}

	public void printNativeIncludes(PrintWriter writer) {
		writer.println("#include \"extal.h\"");
	}

	public Class<? extends Annotation> getStringElementType()	{
		return ALubyte.class;
	}

	public Class<? extends Annotation> getStringArrayType() {
		return ALubyte.class;
	}

	public Class<? extends Annotation> getByteBufferArrayType() {
		return ALubyte.class;
	}

	public Class[] getValidAnnotationTypes(Class type) {
		Class[] valid_types;
		if (Buffer.class.isAssignableFrom(type))
			valid_types = getValidBufferTypes(type);
		else if (type.isPrimitive())
			valid_types = getValidPrimitiveTypes(type);
		else if (type.equals(String.class))
			valid_types = new Class[]{ALubyte.class};
		else
			valid_types = new Class[]{};
		return valid_types;
	}

	public Class<? extends Annotation> getVoidType() {
		return ALvoid.class;
	}

	public Class<? extends Annotation> getInverseType(Class type) {
		if (ALuint.class.equals(type))
			return ALint.class;
		else if (ALint.class.equals(type))
			return ALuint.class;
		else
			return null;
	}

	public String getAutoTypeFromAnnotation(AnnotationMirror annotation) {
		return null;
	}
}
