130 lines
4.1 KiB
Java
130 lines
4.1 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;
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import java.nio.ByteBuffer;
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import javax.lang.model.element.ElementKind;
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import javax.lang.model.type.*;
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import javax.lang.model.util.SimpleTypeVisitor6;
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/**
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* A TypeVisitor that translates (annotated) TypeMirrors to type descriptors.
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*/
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public final class DescriptorTypeTranslator extends SimpleTypeVisitor6<Void, Void> {
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private String descriptor;
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public void descriptor(String descriptor) {
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this.descriptor = descriptor;
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}
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public String descriptor() {
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return descriptor;
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}
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@Override
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public Void visitArray(ArrayType t, Void o) {
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final DescriptorTypeTranslator translator = new DescriptorTypeTranslator();
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translator.visit(t.getComponentType());
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descriptor(forArray(translator.descriptor()));
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return DEFAULT_VALUE;
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}
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@Override
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public Void visitPrimitive(PrimitiveType t, Void p) {
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descriptor(forPrimitive(t.getKind()));
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return DEFAULT_VALUE;
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}
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@Override
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public Void visitDeclared(DeclaredType t, Void o) {
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ElementKind kind = t.asElement().getKind();
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if (kind.isClass() || kind.isInterface()) {
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descriptor(forClass(t.toString()));
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return DEFAULT_VALUE;
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}
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throw new RuntimeException(t.asElement().getKind() + " is not allowed");
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}
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@Override
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public Void visitNoType(NoType t, Void p) {
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descriptor(forClass(void.class));
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return DEFAULT_VALUE;
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}
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public static String forArray(String componentType) {
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return '[' + componentType;
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}
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public static String forClass(String qualName) {
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return 'L' + qualName.replace('.', '/') + ';';
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}
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public static String forPrimitive(TypeKind kind) {
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switch (kind) {
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case LONG:
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return forClass(long.class);
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case INT:
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return forClass(int.class);
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case DOUBLE:
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return forClass(double.class);
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case FLOAT:
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return forClass(float.class);
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case SHORT:
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return forClass(short.class);
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case BYTE:
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return forClass(byte.class);
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case BOOLEAN:
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return forClass(boolean.class);
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case CHAR:
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return forClass(char.class);
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default:
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throw new RuntimeException(kind + " is not a primitive");
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}
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}
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public static String forClass(Class<?> clazz) {
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if (clazz == long.class) return "J";
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else if (clazz == int.class) return "I";
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else if (clazz == double.class) return "D";
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else if (clazz == float.class) return "F";
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else if (clazz == short.class) return "S";
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else if (clazz == byte.class) return "B";
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else if (clazz == boolean.class) return "Z";
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else if (clazz == char.class) return "C";
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else if (clazz == void.class) return "V";
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else if (clazz.isArray()) return forArray(forClass(clazz.componentType()));
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return forClass(clazz.getName());
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}
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}
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