/*
* 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
* 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 org.lwjgl.util.generator;
/**
*
* This class represent a parameter configuration. There are multiple TypeInfos
* in case of multityped parameters.
*
* @author elias_naur <elias_naur@users.sourceforge.net>
* @version $Revision$ $Id$
*/
import org.lwjgl.PointerBuffer;
import org.lwjgl.util.generator.opengl.GLvoid;
import java.lang.annotation.Annotation;
import java.nio.*;
import java.util.*;
import javax.lang.model.element.AnnotationMirror;
import javax.lang.model.element.ExecutableElement;
import javax.lang.model.element.VariableElement;
import javax.lang.model.type.TypeKind;
import javax.lang.model.type.TypeMirror;
public class TypeInfo {
public static final String UNSIGNED_PARAMETER_NAME = "unsigned";
private final Signedness signedness;
private final Class type;
private final String auto_type;
private TypeInfo(Class type, Signedness signedness, String auto_type) {
this.type = type;
this.signedness = signedness;
this.auto_type = auto_type;
}
public Class getType() {
return type;
}
public Signedness getSignedness() {
return signedness;
}
public String getAutoType() {
if ( auto_type == null ) {
throw new RuntimeException("No auto type assigned");
}
return auto_type;
}
private static Class getTypeFromPrimitiveKind(TypeKind kind) {
Class type;
switch ( kind ) {
case LONG:
type = long.class;
break;
case INT:
type = int.class;
break;
case FLOAT:
type = float.class;
break;
case DOUBLE:
type = double.class;
break;
case SHORT:
type = short.class;
break;
case BYTE:
type = byte.class;
break;
case BOOLEAN:
type = boolean.class;
break;
default:
throw new RuntimeException(kind + " is not allowed");
}
return type;
}
private static Class getBufferTypeFromPrimitiveKind(TypeKind kind, AnnotationMirror annotation) {
Class type;
switch ( kind ) {
case INT:
type = IntBuffer.class;
break;
case FLOAT:
type = FloatBuffer.class;
break;
case DOUBLE:
type = DoubleBuffer.class;
break;
case SHORT:
type = ShortBuffer.class;
break;
case LONG:
if ( annotation.getAnnotationType().asElement().getAnnotation(PointerType.class) != null ) {
type = PointerBuffer.class;
} else {
type = LongBuffer.class;
}
break;
case BYTE: /* fall through */
case BOOLEAN:
type = ByteBuffer.class;
break;
default:
throw new RuntimeException(kind + " is not allowed");
}
return type;
}
private static TypeInfo getDefaultTypeInfo(TypeMirror t) {
Class java_type = Utils.getJavaType(t);
return new TypeInfo(java_type, Signedness.NONE, null);
}
public static Map<VariableElement, TypeInfo> getDefaultTypeInfoMap(ExecutableElement method) {
Map<VariableElement, TypeInfo> map = new HashMap<VariableElement, TypeInfo>();
for ( VariableElement param : method.getParameters() ) {
TypeInfo type_info = getDefaultTypeInfo(param.asType());
map.put(param, type_info);
}
return map;
}
private static Collection<TypeInfo> getTypeInfos(TypeMap type_map, VariableElement param) {
List<? extends AnnotationMirror> annotations = Utils.getSortedAnnotations(param.getAnnotationMirrors());
GLvoid void_annotation = param.getAnnotation(GLvoid.class);
Map<Class, TypeInfo> types = new HashMap<Class, TypeInfo>();
Collection<TypeInfo> multityped_result = new ArrayList<TypeInfo>();
boolean add_default_type = true;
for ( AnnotationMirror annotation : annotations ) {
NativeType native_type_annotation = NativeTypeTranslator.getAnnotation(annotation, NativeType.class);
if ( native_type_annotation != null ) {
Class<? extends Annotation> annotation_type = NativeTypeTranslator.getClassFromType(annotation.getAnnotationType());
Signedness signedness = type_map.getSignednessFromType(annotation_type);
Class inverse_type = type_map.getInverseType(annotation_type);
String auto_type = type_map.getAutoTypeFromAnnotation(annotation);
if ( inverse_type != null ) {
if ( types.containsKey(inverse_type) ) {
TypeInfo inverse_type_info = types.get(inverse_type);
String inverse_auto_type = inverse_type_info.getAutoType();
auto_type = signedness == Signedness.UNSIGNED ? auto_type + " : " + inverse_auto_type : inverse_auto_type + " : " + auto_type;
auto_type = UNSIGNED_PARAMETER_NAME + " ? " + auto_type;
signedness = Signedness.BOTH;
types.remove(inverse_type);
multityped_result.remove(inverse_type_info);
}
}
Class type;
TypeKind kind;
kind = void_annotation == null ? type_map.getPrimitiveTypeFromNativeType(annotation_type) : void_annotation.value();
if ( Utils.getNIOBufferType(param.asType()) != null ) {
type = getBufferTypeFromPrimitiveKind(kind, annotation);
} else {
type = getTypeFromPrimitiveKind(kind);
}
TypeInfo type_info = new TypeInfo(type, signedness, auto_type);
types.put(annotation_type, type_info);
multityped_result.add(type_info);
add_default_type = false;
}
}
if ( add_default_type ) {
TypeInfo default_type_info = getDefaultTypeInfo(param.asType());
Collection<TypeInfo> result = new ArrayList<TypeInfo>();
result.add(default_type_info);
return result;
} else {
return multityped_result;
}
}
private static Map<VariableElement, Collection<TypeInfo>> getTypeInfoMap(TypeMap type_map, ExecutableElement method) {
Map<VariableElement, Collection<TypeInfo>> map = new HashMap<VariableElement, Collection<TypeInfo>>();
for ( VariableElement param : method.getParameters() ) {
Collection<TypeInfo> types = getTypeInfos(type_map, param);
map.put(param, types);
}
return map;
}
public static Collection<Map<VariableElement, TypeInfo>> getTypeInfoCrossProduct(TypeMap type_map, ExecutableElement method) {
List<? extends VariableElement> parameter_collection = method.getParameters();
Collection<Map<VariableElement, TypeInfo>> cross_product = new ArrayList<Map<VariableElement, TypeInfo>>();
getCrossProductRecursive(0, parameter_collection, getTypeInfoMap(type_map, method),
new HashMap<VariableElement, TypeInfo>(), cross_product);
return cross_product;
}
private static void getCrossProductRecursive(int index, List<? extends VariableElement> parameters, Map<VariableElement, Collection<TypeInfo>> typeinfos_map, Map<VariableElement, TypeInfo> current_instance, Collection<Map<VariableElement, TypeInfo>> cross_product) {
if ( index == parameters.size() ) {
/**
* the last parameter is treated as multi-type only
*/
cross_product.add(current_instance);
return;
}
VariableElement param = parameters.get(index);
Collection<TypeInfo> typeinfos = typeinfos_map.get(param);
if ( typeinfos != null ) {
for ( TypeInfo typeinfo : typeinfos ) {
Map<VariableElement, TypeInfo> instance = new HashMap<VariableElement, TypeInfo>(current_instance);
instance.put(param, typeinfo);
getCrossProductRecursive(index + 1, parameters, typeinfos_map, instance, cross_product);
}
}
}
}