2005-02-15 06:05:36 -05:00
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/*
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2008-04-07 14:36:09 -04:00
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* Copyright (c) 2002-2008 LWJGL Project
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2005-02-15 06:05:36 -05:00
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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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2005-02-20 14:28:34 -05:00
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package org.lwjgl.util.generator;
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2005-02-15 06:05:36 -05:00
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2010-09-26 19:43:24 -04:00
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import java.io.*;
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import java.lang.annotation.Annotation;
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2005-02-15 06:05:36 -05:00
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import java.nio.*;
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2014-09-14 10:07:56 -04:00
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import java.nio.channels.FileChannel;
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import java.util.*;
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import javax.annotation.processing.ProcessingEnvironment;
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import javax.lang.model.element.AnnotationMirror;
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import javax.lang.model.element.ElementKind;
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import javax.lang.model.element.ExecutableElement;
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import javax.lang.model.element.Modifier;
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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.type.TypeKind;
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import javax.lang.model.type.TypeMirror;
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import javax.lang.model.util.ElementKindVisitor7;
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import javax.tools.Diagnostic;
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import javax.tools.Diagnostic.Kind;
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import javax.tools.FileObject;
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import javax.tools.StandardLocation;
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2005-02-15 06:05:36 -05:00
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/**
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*
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* Generator visitor for the generator tool
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*
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* @author elias_naur <elias_naur@users.sourceforge.net>
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2014-09-14 10:07:56 -04:00
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* @version $Revision$ $Id$
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2005-02-15 06:05:36 -05:00
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*/
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2014-09-14 10:07:56 -04:00
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public class GeneratorVisitor extends ElementKindVisitor7<Void, Void> {
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private final ProcessingEnvironment env;
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private final TypeMap type_map;
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private final boolean generate_error_checks;
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private final boolean context_specific;
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private final long generatorLM;
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public GeneratorVisitor(ProcessingEnvironment env, TypeMap type_map, boolean generate_error_checks, boolean context_specific, long generatorLM) {
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this.env = env;
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this.type_map = type_map;
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this.generate_error_checks = generate_error_checks;
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this.context_specific = context_specific;
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this.generatorLM = generatorLM;
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}
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private void validateMethod(ExecutableElement method) {
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if (method.isVarArgs()) {
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throw new RuntimeException("Method " + method.getSimpleName() + " is variadic");
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}
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Collection<Modifier> modifiers = method.getModifiers();
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if (!modifiers.contains(Modifier.PUBLIC)) {
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throw new RuntimeException("Method " + method.getSimpleName() + " is not public");
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}
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if (method.getThrownTypes().size() > 0) {
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throw new RuntimeException("Method " + method.getSimpleName() + " throws checked exceptions");
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}
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validateParameters(method);
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StripPostfix strip_annotation = method.getAnnotation(StripPostfix.class);
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if (strip_annotation != null && method.getAnnotation(Alternate.class) == null) {
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String postfix_param_name = strip_annotation.value();
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VariableElement postfix_param = Utils.findParameter(method, postfix_param_name);
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if (Utils.isParameterMultiTyped(postfix_param)) {
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throw new RuntimeException("Postfix parameter can't be the same as a multityped parameter in method " + method);
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}
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if (Utils.getNIOBufferType(postfix_param.asType()) == null) {
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throw new RuntimeException("Postfix parameter type must be a nio Buffer");
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}
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}
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if (Utils.getResultParameter(method) != null && !method.getReturnType().equals(env.getTypeUtils().getNoType(TypeKind.VOID))) {
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throw new RuntimeException(method + " return type is not void but a parameter is annotated with Result");
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}
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if (method.getAnnotation(CachedResult.class) != null) {
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if (Utils.getNIOBufferType(Utils.getMethodReturnType(method)) == null) {
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throw new RuntimeException(method + " return type is not a Buffer, but is annotated with CachedResult");
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}
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if (method.getAnnotation(AutoSize.class) == null) {
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throw new RuntimeException(method + " is annotated with CachedResult but misses an AutoSize annotation");
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}
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}
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validateTypes(method, method.getAnnotationMirrors(), method.getReturnType());
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}
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private void validateType(ExecutableElement method, Class<? extends Annotation> annotation_type, Class type) {
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Class[] valid_types = type_map.getValidAnnotationTypes(type);
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for (Class valid_type : valid_types) {
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if (valid_type.equals(annotation_type)) {
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return;
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}
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}
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throw new RuntimeException(type + " is annotated with invalid native type " + annotation_type
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+ " in method " + method);
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}
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private void validateTypes(ExecutableElement method, List<? extends AnnotationMirror> annotations, TypeMirror type_mirror) {
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for (AnnotationMirror annotation : annotations) {
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NativeType native_type_annotation = NativeTypeTranslator.getAnnotation(annotation, NativeType.class);
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if (native_type_annotation != null) {
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Class<? extends Annotation> annotation_type = NativeTypeTranslator.getClassFromType(annotation.getAnnotationType());
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Class type = Utils.getJavaType(type_mirror);
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if (Buffer.class.equals(type)) {
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continue;
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}
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validateType(method, annotation_type, type);
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}
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}
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}
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private void validateParameters(ExecutableElement method) {
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for (VariableElement param : method.getParameters()) {
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validateTypes(method, param.getAnnotationMirrors(), param.asType());
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Class<?> param_type = Utils.getJavaType(param.asType());
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if (Utils.getNIOBufferType(param.asType()) != null && param_type != CharSequence.class && param_type != CharSequence[].class) {
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Check parameter_check_annotation = param.getAnnotation(Check.class);
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NullTerminated null_terminated_annotation = param.getAnnotation(NullTerminated.class);
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if (parameter_check_annotation == null && null_terminated_annotation == null) {
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boolean found_auto_size_param = false;
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for (VariableElement inner_param : method.getParameters()) {
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AutoSize auto_size_annotation = inner_param.getAnnotation(AutoSize.class);
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if (auto_size_annotation != null
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&& auto_size_annotation.value().equals(param.getSimpleName().toString())) {
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found_auto_size_param = true;
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break;
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}
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}
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if (!found_auto_size_param
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&& param.getAnnotation(Result.class) == null
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&& param.getAnnotation(Constant.class) == null
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&& !Utils.isReturnParameter(method, param)) {
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throw new RuntimeException(param + " has no Check, Result nor Constant annotation, is not the return parameter and no other parameter has"
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+ " an @AutoSize annotation on it in method " + method);
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}
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}
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if (param.getAnnotation(CachedReference.class) != null && param.getAnnotation(Result.class) != null) {
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throw new RuntimeException(param + " can't be annotated with both CachedReference and Result");
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}
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if (param.getAnnotation(BufferObject.class) != null && param.getAnnotation(Result.class) != null) {
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throw new RuntimeException(param + " can't be annotated with both BufferObject and Result");
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}
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//if (param.getAnnotation(Constant.class) != null)
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//throw new RuntimeException("Buffer parameter " + param + " cannot be Constant");
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} else {
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if (param.getAnnotation(BufferObject.class) != null) {
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throw new RuntimeException(param + " type is not a buffer, but annotated as a BufferObject");
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}
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if (param.getAnnotation(CachedReference.class) != null) {
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throw new RuntimeException(param + " type is not a buffer, but annotated as a CachedReference");
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}
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}
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}
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}
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private static void generateMethodsNativePointers(PrintWriter writer, Collection<? extends ExecutableElement> methods) {
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for (ExecutableElement method : methods) {
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if (method.getAnnotation(Alternate.class) == null) {
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generateMethodNativePointers(writer, method);
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}
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}
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}
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private static void generateMethodNativePointers(PrintWriter writer, ExecutableElement method) {
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if (method.getAnnotation(Extern.class) == null) {
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writer.print("static ");
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}
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writer.println(Utils.getTypedefName(method) + " " + method.getSimpleName() + ";");
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}
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private void generateJavaSource(TypeElement d, PrintWriter java_writer) throws IOException {
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java_writer.println("/* MACHINE GENERATED FILE, DO NOT EDIT */");
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java_writer.println();
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java_writer.println("package " + env.getElementUtils().getPackageOf(d).getQualifiedName().toString() + ";");
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java_writer.println();
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java_writer.println("import org.lwjgl.*;");
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java_writer.println("import java.nio.*;");
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Imports imports = d.getAnnotation(Imports.class);
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if (imports != null) {
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for (String i : imports.value()) {
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java_writer.println("import " + i + ";");
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}
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}
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java_writer.println();
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Utils.printDocComment(java_writer, d, env);
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if (d.getAnnotation(Private.class) == null) {
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java_writer.print("public ");
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}
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boolean is_final = Utils.isFinal(d);
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if (is_final) {
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java_writer.write("final ");
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}
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java_writer.print("class " + Utils.getSimpleClassName(d));
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List<? extends TypeMirror> super_interfaces = d.getInterfaces();
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if (super_interfaces.size() > 1) {
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throw new RuntimeException(d + " extends more than one interface");
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}
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if (super_interfaces.size() == 1) {
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TypeMirror super_interface = super_interfaces.iterator().next();
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java_writer.print(" extends " + Utils.getSimpleClassName(env.getElementUtils().getTypeElement(super_interface.toString())));
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}
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java_writer.println(" {");
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FieldsGenerator.generateFields(env, java_writer, Utils.getFields(d));
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java_writer.println();
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if (is_final) {
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// Write private constructor to avoid instantiation
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java_writer.println("\tprivate " + Utils.getSimpleClassName(d) + "() {}");
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}
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if (Utils.getMethods(d).size() > 0 && !context_specific) {
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java_writer.println();
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java_writer.println("\tstatic native void " + Utils.STUB_INITIALIZER_NAME + "() throws LWJGLException;");
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}
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JavaMethodsGenerator.generateMethodsJava(env, type_map, java_writer, d, generate_error_checks, context_specific);
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java_writer.println("}");
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java_writer.close();
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String qualified_interface_name = Utils.getQualifiedClassName(d);
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env.getMessager().printMessage(Diagnostic.Kind.NOTE, "Generated class " + qualified_interface_name);
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}
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private void generateNativeSource(TypeElement d) throws IOException {
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if (d.getKind().equals(ElementKind.ANNOTATION_TYPE)) {
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return;
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}
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String qualified_interface_name = Utils.getQualifiedClassName(d);
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String qualified_native_name = Utils.getNativeQualifiedName(qualified_interface_name) + ".c";
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PrintWriter native_writer = new PrintWriter(env.getFiler().createResource(StandardLocation.CLASS_OUTPUT, "", qualified_native_name).openWriter());
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native_writer.println("/* MACHINE GENERATED FILE, DO NOT EDIT */");
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native_writer.println();
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native_writer.println("#include <jni.h>");
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type_map.printNativeIncludes(native_writer);
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native_writer.println();
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TypedefsGenerator.generateNativeTypedefs(type_map, native_writer, Utils.getMethods(d));
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native_writer.println();
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if (!context_specific) {
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generateMethodsNativePointers(native_writer, Utils.getMethods(d));
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native_writer.println();
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}
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NativeMethodStubsGenerator.generateNativeMethodStubs(env, type_map, native_writer, d, generate_error_checks, context_specific);
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if (!context_specific) {
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native_writer.print("JNIEXPORT void JNICALL " + Utils.getQualifiedNativeMethodName(qualified_interface_name, Utils.STUB_INITIALIZER_NAME));
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native_writer.println("(JNIEnv *env, jclass clazz) {");
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native_writer.println("\tJavaMethodAndExtFunction functions[] = {");
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RegisterStubsGenerator.generateMethodsNativeStubBind(env, native_writer, d, generate_error_checks, context_specific);
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native_writer.println("\t};");
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native_writer.println("\tint num_functions = NUMFUNCTIONS(functions);");
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native_writer.print("\t");
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native_writer.print(type_map.getRegisterNativesFunctionName());
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native_writer.println("(env, clazz, num_functions, functions);");
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native_writer.println("}");
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}
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native_writer.close();
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env.getMessager().printMessage(Kind.NOTE, "Generated C source " + qualified_interface_name);
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}
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@Override
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public Void visitTypeAsInterface(TypeElement e, Void p) {
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PrintWriter java_writer = null;
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try {
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final Collection<? extends ExecutableElement> methods = Utils.getMethods(e);
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if (methods.isEmpty() && Utils.getFields(e).isEmpty()) {
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return DEFAULT_VALUE;
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}
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env.getMessager().printMessage(Kind.NOTE, "methods count : " + Utils.getMethods(e).size() + " fields count : " + Utils.getFields(e).size(), e);
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for (final ExecutableElement method : methods) {
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validateMethod(method);
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}
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java_writer = new PrintWriter(env.getFiler().createSourceFile(Utils.getQualifiedClassName(e), env.getElementUtils().getPackageOf(e)).openWriter());
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generateJavaSource(e, java_writer);
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if (methods.size() > 0) {
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boolean noNative = true;
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for (final ExecutableElement method : methods) {
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Alternate alt_annotation = method.getAnnotation(Alternate.class);
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if ((alt_annotation == null || alt_annotation.nativeAlt()) && method.getAnnotation(Reuse.class) == null) {
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noNative = false;
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break;
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}
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}
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if (noNative) {
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return DEFAULT_VALUE;
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}
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boolean outputNativeExists = true, outputBackupExists = true;
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File outputNative = null, outputBackup = null;
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try {
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final FileObject fo_outputNative = env.getFiler().getResource(StandardLocation.CLASS_OUTPUT, "", Utils.getNativeQualifiedName(Utils.getQualifiedClassName(e)).replace(".", "/") + ".c");
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outputNative = new File(fo_outputNative.toUri());
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outputNativeExists = outputNative.exists();
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|
|
final FileObject fo_outputBackup = env.getFiler().getResource(StandardLocation.CLASS_OUTPUT, "", Utils.getNativeQualifiedName(Utils.getQualifiedClassName(e)).replace(".", "/") + "_backup.c");
|
|
|
|
outputBackup = new File(fo_outputBackup.toUri());
|
|
|
|
outputBackupExists = outputBackup.exists();
|
|
|
|
} catch (IOException ex) {
|
|
|
|
if (outputNative == null) {
|
|
|
|
outputNativeExists = false;
|
|
|
|
}
|
|
|
|
if (outputBackup == null) {
|
|
|
|
outputBackupExists = false;
|
|
|
|
}
|
|
|
|
} finally {
|
|
|
|
// If the native file exists, rename.
|
|
|
|
final ByteBuffer nativeBefore;
|
|
|
|
if (outputNativeExists) {
|
|
|
|
nativeBefore = readFile(outputNative);
|
|
|
|
if (outputBackupExists) {
|
|
|
|
outputBackup.delete();
|
|
|
|
}
|
|
|
|
outputNative.renameTo(outputBackup);
|
|
|
|
} else {
|
|
|
|
nativeBefore = null;
|
|
|
|
}
|
|
|
|
try {
|
|
|
|
generateNativeSource(e);
|
|
|
|
|
|
|
|
// If the native file did exist, compare with the new file. If they're the same,
|
|
|
|
// reset the last modified time to avoid ridiculous C compilation times.
|
|
|
|
if (nativeBefore != null && outputNative.length() == nativeBefore.capacity()) {
|
|
|
|
final ByteBuffer nativeAfter = readFile(outputNative);
|
|
|
|
boolean same = true;
|
|
|
|
for (int i = nativeBefore.position(); i < nativeBefore.limit(); i++) {
|
|
|
|
if (nativeBefore.get(i) != nativeAfter.get(i)) {
|
|
|
|
same = false;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (same) {
|
|
|
|
outputNative.delete();
|
|
|
|
outputBackup.renameTo(outputNative);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
} catch (IOException ex) {
|
|
|
|
throw new RuntimeException(ex);
|
|
|
|
} finally {
|
|
|
|
if (outputBackup.exists()) {
|
|
|
|
outputBackup.delete();
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return DEFAULT_VALUE;
|
|
|
|
} catch (Exception ex) {
|
|
|
|
// If anything goes wrong mid-gen, delete output to allow regen next time we run.
|
|
|
|
if (java_writer != null) {
|
|
|
|
java_writer.close();
|
|
|
|
}
|
|
|
|
throw new RuntimeException(ex);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
private static ByteBuffer readFile(final File file) throws IOException {
|
|
|
|
final FileChannel channel = new FileInputStream(file).getChannel();
|
|
|
|
|
|
|
|
final long bytesTotal = channel.size();
|
|
|
|
final ByteBuffer buffer = ByteBuffer.allocateDirect((int) bytesTotal);
|
|
|
|
|
|
|
|
long bytesRead = 0;
|
|
|
|
do {
|
|
|
|
bytesRead += channel.read(buffer);
|
|
|
|
} while (bytesRead < bytesTotal);
|
|
|
|
buffer.flip();
|
|
|
|
|
|
|
|
channel.close();
|
|
|
|
|
|
|
|
return buffer;
|
|
|
|
}
|
2010-09-26 19:43:24 -04:00
|
|
|
|
2005-02-15 06:05:36 -05:00
|
|
|
}
|