Mercurial > hg > truffle
diff truffle/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/java/model/CodeElement.java @ 21951:9c8c0937da41
Moving all sources into truffle subdirectory
author | Jaroslav Tulach <jaroslav.tulach@oracle.com> |
---|---|
date | Wed, 17 Jun 2015 10:58:08 +0200 |
parents | graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/java/model/CodeElement.java@a665483c3881 |
children | dc83cc1f94f2 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/truffle/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/java/model/CodeElement.java Wed Jun 17 10:58:08 2015 +0200 @@ -0,0 +1,357 @@ +/* + * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + */ +package com.oracle.truffle.dsl.processor.java.model; + +import java.io.*; +import java.lang.annotation.*; +import java.util.*; + +import javax.lang.model.element.*; + +import com.oracle.truffle.dsl.processor.java.transform.*; + +public abstract class CodeElement<E extends Element> implements Element, GeneratedElement { + + private final Set<Modifier> modifiers; + private List<AnnotationMirror> annotations; + private List<E> enclosedElements; + + private Element enclosingElement; + + private Element generatorElement; + private AnnotationMirror generatorAnnotationMirror; + + public CodeElement(Set<Modifier> modifiers) { + this.modifiers = new LinkedHashSet<>(modifiers); + } + + @Override + public void setGeneratorAnnotationMirror(AnnotationMirror mirror) { + this.generatorAnnotationMirror = mirror; + } + + @Override + public void setGeneratorElement(Element element) { + this.generatorElement = element; + } + + @Override + public AnnotationMirror getGeneratorAnnotationMirror() { + return generatorAnnotationMirror; + } + + @Override + public Element getGeneratorElement() { + return generatorElement; + } + + public <T extends E> T add(T element) { + if (element == null) { + throw new NullPointerException(); + } + getEnclosedElements().add(element); + return element; + } + + public <T extends E> T addOptional(T element) { + if (element != null) { + add(element); + } + return element; + } + + public void remove(E element) { + getEnclosedElements().remove(element); + } + + @Override + public Set<Modifier> getModifiers() { + return modifiers; + } + + @Override + public List<E> getEnclosedElements() { + if (enclosedElements == null) { + enclosedElements = parentableList(this, new ArrayList<E>()); + } + return enclosedElements; + } + + @Override + public List<AnnotationMirror> getAnnotationMirrors() { + if (annotations == null) { + annotations = parentableList(this, new ArrayList<AnnotationMirror>()); + } + return annotations; + } + + /** + * Support JDK8 langtools. + * + * @param annotationType + */ + public <A extends Annotation> A[] getAnnotationsByType(Class<A> annotationType) { + throw new UnsupportedOperationException(); + } + + /** + * Support for some JDK8 builds. (remove after jdk8 is released) + * + * @param annotationType + */ + public <A extends Annotation> A[] getAnnotations(Class<A> annotationType) { + throw new UnsupportedOperationException(); + } + + /** + * Support for some JDK8 builds. (remove after jdk8 is released) + * + * @param annotationType + */ + public <A extends Annotation> A getAnnotation(Class<A> annotationType) { + throw new UnsupportedOperationException(); + } + + public void addAnnotationMirror(AnnotationMirror annotationMirror) { + getAnnotationMirrors().add(annotationMirror); + } + + public void setEnclosingElement(Element parent) { + this.enclosingElement = parent; + } + + public Element getEnclosingElement() { + return enclosingElement; + } + + public CodeTypeElement getEnclosingClass() { + Element p = enclosingElement; + while (p != null && p.getKind() != ElementKind.CLASS && p.getKind() != ElementKind.ENUM) { + p = p.getEnclosingElement(); + } + return (CodeTypeElement) p; + } + + <T> List<T> parentableList(Element parent, List<T> list) { + return new ParentableList<>(parent, list); + } + + @Override + public String toString() { + StringBuilderCodeWriter codeWriter = new StringBuilderCodeWriter(); + accept(codeWriter, null); + return codeWriter.getString(); + } + + private static class StringBuilderCodeWriter extends AbstractCodeWriter { + + public StringBuilderCodeWriter() { + this.writer = new CharArrayWriter(); + } + + @Override + protected Writer createWriter(CodeTypeElement clazz) throws IOException { + return writer; + } + + public String getString() { + return new String(((CharArrayWriter) writer).toCharArray()).trim(); + } + + } + + private static class ParentableList<T> implements List<T> { + + private final Element parent; + private final List<T> delegate; + + public ParentableList(Element parent, List<T> delegate) { + this.parent = parent; + this.delegate = delegate; + } + + private void addImpl(T element) { + if (element != null) { + if (element instanceof CodeElement<?>) { + ((CodeElement<?>) element).setEnclosingElement(parent); + } + } + } + + private static void removeImpl(Object element) { + if (element instanceof CodeElement<?>) { + ((CodeElement<?>) element).setEnclosingElement(null); + } + } + + @Override + public int size() { + return delegate.size(); + } + + @Override + public boolean isEmpty() { + return delegate.isEmpty(); + } + + @Override + public boolean contains(Object o) { + return delegate.contains(o); + } + + @Override + public Iterator<T> iterator() { + return delegate.iterator(); + } + + @Override + public Object[] toArray() { + return delegate.toArray(); + } + + @Override + public <E> E[] toArray(E[] a) { + return delegate.toArray(a); + } + + @Override + public boolean add(T e) { + addImpl(e); + return delegate.add(e); + } + + @Override + public boolean remove(Object o) { + boolean removed = delegate.remove(o); + if (removed) { + removeImpl(o); + } + return removed; + } + + @Override + public boolean containsAll(Collection<?> c) { + return delegate.containsAll(c); + } + + @Override + public boolean addAll(Collection<? extends T> c) { + if (c != null) { + for (T t : c) { + addImpl(t); + } + } + return delegate.addAll(c); + } + + @Override + public boolean addAll(int index, Collection<? extends T> c) { + if (c != null) { + for (T t : c) { + addImpl(t); + } + } + return delegate.addAll(index, c); + } + + @Override + public boolean removeAll(Collection<?> c) { + if (c != null) { + for (Object t : c) { + removeImpl(t); + } + } + return delegate.removeAll(c); + } + + @Override + public String toString() { + return delegate.toString(); + } + + @Override + public boolean retainAll(Collection<?> c) { + throw new UnsupportedOperationException("Not supported by parentable list"); + } + + @Override + public void clear() { + for (Object e : this) { + removeImpl(e); + } + delegate.clear(); + } + + @Override + public T get(int index) { + return delegate.get(index); + } + + @Override + public T set(int index, T element) { + removeImpl(delegate.get(index)); + addImpl(element); + return delegate.set(index, element); + } + + @Override + public void add(int index, T element) { + addImpl(element); + delegate.add(index, element); + } + + @Override + public T remove(int index) { + T element = delegate.remove(index); + removeImpl(element); + return element; + } + + @Override + public int indexOf(Object o) { + return delegate.indexOf(o); + } + + @Override + public int lastIndexOf(Object o) { + return delegate.lastIndexOf(o); + } + + @Override + public ListIterator<T> listIterator() { + return delegate.listIterator(); + } + + @Override + public ListIterator<T> listIterator(int index) { + return delegate.listIterator(index); + } + + @Override + public List<T> subList(int fromIndex, int toIndex) { + return new ParentableList<>(parent, delegate.subList(fromIndex, toIndex)); + } + + } + +}