212 lines
9.2 KiB
Java
212 lines
9.2 KiB
Java
/*
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* Copyright (c) 2002-2008 LWJGL Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* * Neither the name of 'LWJGL' nor the names of
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* its contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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package org.lwjgl.util.generator.opengl;
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import org.lwjgl.util.generator.Alternate;
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import org.lwjgl.util.generator.CachedReference;
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import org.lwjgl.util.generator.Utils;
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import java.io.ByteArrayOutputStream;
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import java.io.IOException;
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import java.io.PrintWriter;
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import java.io.StringWriter;
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import java.nio.file.Path;
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import java.util.Map;
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import java.util.Set;
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import java.util.concurrent.Callable;
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import javax.annotation.processing.*;
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import javax.lang.model.SourceVersion;
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import javax.lang.model.element.ExecutableElement;
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import javax.lang.model.element.TypeElement;
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import javax.lang.model.element.VariableElement;
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import javax.lang.model.util.ElementFilter;
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import static org.lwjgl.util.generator.GeneratorVisitor.saveGeneratedJavaSource;
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import static org.lwjgl.util.generator.Utils.getRequiredOption;
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import static org.lwjgl.util.generator.Utils.await;
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import static org.lwjgl.util.generator.Utils.spawn;
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/**
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* Generator tool for creating the References class
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*
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* @author elias_naur <elias_naur@users.sourceforge.net>
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* @version $Revision: 3237 $ $Id: ReferencesGeneratorProcessorFactory.java 3237
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* 2009-09-08 15:07:15Z spasi $
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*/
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@SupportedAnnotationTypes({ "*" })
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@SupportedSourceVersion(SourceVersion.RELEASE_10)
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@SupportedOptions({ "genJavaPath", "generatechecks", "contextspecific" })
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public final class GLReferencesGeneratorProcessor extends AbstractProcessor {
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private static final String REFERENCES_CLASS_NAME = "References";
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private static final String REFERENCES_PARAMETER_NAME = "references";
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private static boolean first_round = true;
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@Override
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public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
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if ( roundEnv.processingOver() || !first_round ) {
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System.exit(0);
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return true;
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}
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Map<String, String> options = processingEnv.getOptions();
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Path genJavaPath = Path.of(getRequiredOption(options, "genJavaPath", "a path."));
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try {
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generateReferencesSource(processingEnv, genJavaPath, ElementFilter.typesIn(roundEnv.getRootElements()));
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first_round = false;
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return true;
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} catch (IOException e) {
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throw new RuntimeException(e);
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}
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}
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private static void generateClearsFromParameters(PrintWriter writer, TypeElement interface_decl, ExecutableElement method) {
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for ( VariableElement param : method.getParameters() ) {
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CachedReference cached_reference_annotation = param.getAnnotation(CachedReference.class);
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if ( cached_reference_annotation != null && cached_reference_annotation.name().length() == 0 ) {
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Class nio_type = Utils.getNIOBufferType(param.asType());
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String reference_name = Utils.getReferenceName(interface_decl, method, param);
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writer.append("\t\tthis.").append(reference_name).append(" = null;\n");
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}
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}
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}
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private static void generateCopiesFromParameters(PrintWriter writer, TypeElement interface_decl, ExecutableElement method) {
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for ( VariableElement param : method.getParameters() ) {
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CachedReference cached_reference_annotation = param.getAnnotation(CachedReference.class);
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if ( cached_reference_annotation != null && cached_reference_annotation.name().length() == 0 ) {
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Class nio_type = Utils.getNIOBufferType(param.asType());
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String reference_name = Utils.getReferenceName(interface_decl, method, param);
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writer.append("\t\t\tthis.").append(reference_name).append(" = " + REFERENCES_PARAMETER_NAME + ".").append(reference_name).append(";\n");
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}
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}
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}
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private static void generateClearsFromMethods(ProcessingEnvironment env, PrintWriter writer, TypeElement interface_decl) {
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for ( ExecutableElement method : Utils.getMethods(interface_decl) ) {
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if ( method.getAnnotation(Alternate.class) != null ) {
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continue;
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}
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generateClearsFromParameters(writer, interface_decl, method);
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}
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}
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private static void generateCopiesFromMethods(ProcessingEnvironment env, PrintWriter writer, TypeElement interface_decl) {
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for ( ExecutableElement method : Utils.getMethods(interface_decl) ) {
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if ( method.getAnnotation(Alternate.class) != null ) {
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continue;
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}
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generateCopiesFromParameters(writer, interface_decl, method);
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}
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}
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private static void generateReferencesFromParameters(PrintWriter writer, TypeElement interface_decl, ExecutableElement method) {
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for ( VariableElement param : method.getParameters() ) {
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CachedReference cached_reference_annotation = param.getAnnotation(CachedReference.class);
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if ( cached_reference_annotation != null && cached_reference_annotation.name().length() == 0 ) {
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Class nio_type = Utils.getNIOBufferType(param.asType());
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if ( nio_type == null ) {
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throw new RuntimeException(param + " in method " + method + " in " + interface_decl + " is annotated with "
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+ cached_reference_annotation.annotationType().getSimpleName() + " but the parameter is not a NIO buffer");
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}
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writer.append('\t').append(nio_type.getName()).append(' ').append(Utils.getReferenceName(interface_decl, method, param)).append(";\n");
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}
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}
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}
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private static void generateReferencesFromMethods(ProcessingEnvironment env, PrintWriter writer, TypeElement interface_decl) {
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for ( ExecutableElement method : Utils.getMethods(interface_decl) ) {
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if ( method.getAnnotation(Alternate.class) != null ) {
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continue;
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}
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generateReferencesFromParameters(writer, interface_decl, method);
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}
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}
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private void generateReferencesSource(ProcessingEnvironment env, Path genJavaPath, Set<TypeElement> templates) throws IOException {
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long startTime = System.currentTimeMillis();
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ByteArrayOutputStream writer1 = new ByteArrayOutputStream();
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// interesting note: autoFlush does absolutely nothing
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PrintWriter writer = new PrintWriter(writer1);
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writer.append("/* MACHINE GENERATED FILE, DO NOT EDIT */\n\n"
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+ "package org.lwjgl.opengl;\n\n"
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+ "class " + REFERENCES_CLASS_NAME + " extends BaseReferences {\n"
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+ "\t" + REFERENCES_CLASS_NAME + "(ContextCapabilities caps) {\n"
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+ "\t\tsuper(caps);\n"
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+ "\t}\n\n");
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writer.flush();
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templates.parallelStream().parallel().filter(tmpl -> tmpl.getKind().isInterface()).map(interface_decl -> {
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ByteArrayOutputStream writer2 = new ByteArrayOutputStream();
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PrintWriter writer3 = new PrintWriter(writer2);
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generateReferencesFromMethods(env, writer3, interface_decl);
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writer3.flush();
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return writer2.toByteArray();
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}).sequential().forEach(writer1::writeBytes);
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writer.append("\tvoid copy(" + REFERENCES_CLASS_NAME + " " + REFERENCES_PARAMETER_NAME + ", int mask) {\n"
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+ "\t\tsuper.copy(" + REFERENCES_PARAMETER_NAME + ", mask);\n"
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+ "\t\tif ( (mask & GL11.GL_CLIENT_VERTEX_ARRAY_BIT) != 0 ) {\n");
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writer.flush();
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templates.parallelStream().parallel().filter(tmpl -> tmpl.getKind().isInterface()).map(interface_decl -> {
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ByteArrayOutputStream writer2 = new ByteArrayOutputStream();
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PrintWriter writer3 = new PrintWriter(writer2);
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generateCopiesFromMethods(processingEnv, writer3, interface_decl);
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writer3.flush();
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return writer2.toByteArray();
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}).sequential().forEach(writer1::writeBytes);
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writer.append("\t\t}\n"
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+ "\t}\n"
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+ "\tvoid clear() {\n"
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+ "\t\tsuper.clear();\n");
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writer.flush();
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templates.parallelStream().parallel().filter(tmpl -> tmpl.getKind().isInterface()).map(interface_decl -> {
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ByteArrayOutputStream writer2 = new ByteArrayOutputStream();
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PrintWriter writer3 = new PrintWriter(writer2);
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generateClearsFromMethods(processingEnv, writer3, interface_decl);
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writer3.flush();
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return writer2.toByteArray();
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}).sequential().forEach(writer1::writeBytes);
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writer.append("\t}\n"
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+ "}\n");
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saveGeneratedJavaSource(env.getMessager(), genJavaPath, "org.lwjgl.opengl." + REFERENCES_CLASS_NAME, spawn((Callable<byte[]>) () -> {
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writer.flush();
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return writer1.toByteArray();
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}), startTime);
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}
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}
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