/*
* Copyright (c) 2002-2008 LWJGL Project
* All rights reserved.
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* 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
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package org.lwjgl.util.generator.opengl;
import org.lwjgl.util.generator.CachedReference;
import org.lwjgl.util.generator.Utils;
import static java.util.Collections.emptyList;
import static java.util.Collections.unmodifiableCollection;
import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.Collection;
import java.util.Set;
import com.sun.mirror.apt.AnnotationProcessor;
import com.sun.mirror.apt.AnnotationProcessorEnvironment;
import com.sun.mirror.apt.AnnotationProcessorFactory;
import com.sun.mirror.apt.AnnotationProcessors;
import com.sun.mirror.apt.Filer;
import com.sun.mirror.apt.RoundCompleteEvent;
import com.sun.mirror.apt.RoundCompleteListener;
import com.sun.mirror.declaration.AnnotationTypeDeclaration;
import com.sun.mirror.declaration.InterfaceDeclaration;
import com.sun.mirror.declaration.MethodDeclaration;
import com.sun.mirror.declaration.ParameterDeclaration;
import com.sun.mirror.declaration.TypeDeclaration;
import com.sun.mirror.util.DeclarationFilter;
/**
*
* Generator tool for creating the References class
*
* @author elias_naur <elias_naur@users.sourceforge.net>
* @version $Revision: 3237 $
* $Id: ReferencesGeneratorProcessorFactory.java 3237 2009-09-08 15:07:15Z spasi $
*/
public class GLReferencesGeneratorProcessorFactory implements AnnotationProcessorFactory, RoundCompleteListener {
private static final String REFERENCES_CLASS_NAME = "References";
private static final String REFERENCES_PARAMETER_NAME = "references";
private static boolean first_round = true;
// Process any set of annotations
private static final Collection<String> supportedAnnotations =
unmodifiableCollection(Arrays.asList("*"));
public Collection<String> supportedAnnotationTypes() {
return supportedAnnotations;
}
public Collection<String> supportedOptions() {
return emptyList();
}
public void roundComplete(RoundCompleteEvent event) {
first_round = false;
}
public AnnotationProcessor getProcessorFor(Set<AnnotationTypeDeclaration> atds, AnnotationProcessorEnvironment env) {
// Only process the initial types, not the generated ones
if (first_round) {
env.addListener(this);
return new GeneratorProcessor(env);
} else
return AnnotationProcessors.NO_OP;
}
private static class GeneratorProcessor implements AnnotationProcessor {
private final AnnotationProcessorEnvironment env;
GeneratorProcessor(AnnotationProcessorEnvironment env) {
this.env = env;
}
public void process() {
try {
generateReferencesSource();
} catch (IOException e) {
throw new RuntimeException(e);
}
}
private static void generateClearsFromParameters(PrintWriter writer, InterfaceDeclaration interface_decl, MethodDeclaration method) {
for (ParameterDeclaration param : method.getParameters()) {
CachedReference cached_reference_annotation = param.getAnnotation(CachedReference.class);
if (cached_reference_annotation != null && cached_reference_annotation.name().length() == 0) {
Class nio_type = Utils.getNIOBufferType(param.getType());
String reference_name = Utils.getReferenceName(interface_decl, method, param);
writer.println("\t\tthis." + reference_name + " = null;");
}
}
}
private static void generateCopiesFromParameters(PrintWriter writer, InterfaceDeclaration interface_decl, MethodDeclaration method) {
for (ParameterDeclaration param : method.getParameters()) {
CachedReference cached_reference_annotation = param.getAnnotation(CachedReference.class);
if (cached_reference_annotation != null && cached_reference_annotation.name().length() == 0) {
Class nio_type = Utils.getNIOBufferType(param.getType());
String reference_name = Utils.getReferenceName(interface_decl, method, param);
writer.print("\t\t\tthis." + reference_name + " = ");
writer.println(REFERENCES_PARAMETER_NAME + "." + reference_name + ";");
}
}
}
private static void generateClearsFromMethods(PrintWriter writer, InterfaceDeclaration interface_decl) {
for (MethodDeclaration method : interface_decl.getMethods()) {
generateClearsFromParameters(writer, interface_decl, method);
}
}
private static void generateCopiesFromMethods(PrintWriter writer, InterfaceDeclaration interface_decl) {
for (MethodDeclaration method : interface_decl.getMethods()) {
generateCopiesFromParameters(writer, interface_decl, method);
}
}
private static void generateReferencesFromParameters(PrintWriter writer, InterfaceDeclaration interface_decl, MethodDeclaration method) {
for (ParameterDeclaration param : method.getParameters()) {
CachedReference cached_reference_annotation = param.getAnnotation(CachedReference.class);
if (cached_reference_annotation != null && cached_reference_annotation.name().length() == 0) {
Class nio_type = Utils.getNIOBufferType(param.getType());
if (nio_type == null)
throw new RuntimeException(param + " in method " + method + " in " + interface_decl + " is annotated with "
+ cached_reference_annotation.annotationType().getSimpleName() + " but the parameter is not a NIO buffer");
writer.print("\t" + nio_type.getName() + " " + Utils.getReferenceName(interface_decl, method, param));
writer.println(";");
}
}
}
private static void generateReferencesFromMethods(PrintWriter writer, InterfaceDeclaration interface_decl) {
for (MethodDeclaration method : interface_decl.getMethods()) {
generateReferencesFromParameters(writer, interface_decl, method);
}
}
private void generateReferencesSource() throws IOException {
PrintWriter writer = env.getFiler().createTextFile(Filer.Location.SOURCE_TREE, "org.lwjgl.opengl", new File(REFERENCES_CLASS_NAME + ".java"), null);
writer.println("/* MACHINE GENERATED FILE, DO NOT EDIT */");
writer.println();
writer.println("package org.lwjgl.opengl;");
writer.println();
writer.println("class " + REFERENCES_CLASS_NAME + " extends BaseReferences {");
writer.println("\t" + REFERENCES_CLASS_NAME + "(ContextCapabilities caps) {");
writer.println("\t\tsuper(caps);");
writer.println("\t}");
DeclarationFilter filter = DeclarationFilter.getFilter(InterfaceDeclaration.class);
Collection<TypeDeclaration> interface_decls = filter.filter(env.getSpecifiedTypeDeclarations());
for (TypeDeclaration typedecl : interface_decls) {
InterfaceDeclaration interface_decl = (InterfaceDeclaration)typedecl;
generateReferencesFromMethods(writer, interface_decl);
}
writer.println();
writer.println("\tvoid copy(" + REFERENCES_CLASS_NAME + " " + REFERENCES_PARAMETER_NAME + ", int mask) {");
writer.println("\t\tsuper.copy(" + REFERENCES_PARAMETER_NAME + ", mask);");
writer.println("\t\tif ( (mask & GL11.GL_CLIENT_VERTEX_ARRAY_BIT) != 0 ) {");
for (TypeDeclaration typedecl : interface_decls) {
InterfaceDeclaration interface_decl = (InterfaceDeclaration)typedecl;
generateCopiesFromMethods(writer, interface_decl);
}
writer.println("\t\t}");
writer.println("\t}");
writer.println("\tvoid clear() {");
writer.println("\t\tsuper.clear();");
for (TypeDeclaration typedecl : interface_decls) {
InterfaceDeclaration interface_decl = (InterfaceDeclaration)typedecl;
generateClearsFromMethods(writer, interface_decl);
}
writer.println("\t}");
writer.println("}");
writer.close();
}
}
}