author | jjg |
Tue, 09 Sep 2008 10:28:21 -0700 | |
changeset 1257 | 873b053bf757 |
parent 10 | 06bc494ca11e |
child 1264 | 076a3cde30d5 |
permissions | -rw-r--r-- |
10 | 1 |
/* |
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* Copyright 2005-2006 Sun Microsystems, Inc. All Rights Reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Sun designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Sun in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
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* CA 95054 USA or visit www.sun.com if you need additional information or |
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* have any questions. |
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*/ |
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package com.sun.tools.javac.api; |
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import java.io.IOException; |
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import java.util.Map; |
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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.AnnotationValue; |
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import javax.lang.model.element.Element; |
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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.type.DeclaredType; |
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import javax.lang.model.type.TypeMirror; |
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import javax.tools.JavaCompiler; |
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import javax.tools.JavaFileObject; |
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import com.sun.source.tree.CompilationUnitTree; |
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import com.sun.source.tree.Scope; |
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import com.sun.source.tree.Tree; |
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import com.sun.source.util.SourcePositions; |
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import com.sun.source.util.TreePath; |
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import com.sun.source.util.Trees; |
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import com.sun.tools.javac.code.Symbol.ClassSymbol; |
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import com.sun.tools.javac.code.Symbol.TypeSymbol; |
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import com.sun.tools.javac.code.Symbol; |
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import com.sun.tools.javac.comp.Attr; |
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import com.sun.tools.javac.comp.AttrContext; |
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import com.sun.tools.javac.comp.Enter; |
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import com.sun.tools.javac.comp.Env; |
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import com.sun.tools.javac.comp.MemberEnter; |
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import com.sun.tools.javac.comp.Resolve; |
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import com.sun.tools.javac.model.JavacElements; |
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import com.sun.tools.javac.processing.JavacProcessingEnvironment; |
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import com.sun.tools.javac.tree.JCTree.*; |
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import com.sun.tools.javac.tree.JCTree; |
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import com.sun.tools.javac.tree.TreeCopier; |
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import com.sun.tools.javac.tree.TreeInfo; |
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import com.sun.tools.javac.tree.TreeMaker; |
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import com.sun.tools.javac.util.Context; |
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import com.sun.tools.javac.util.List; |
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import com.sun.tools.javac.util.Log; |
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import com.sun.tools.javac.util.Pair; |
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/** |
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* Provides an implementation of Trees. |
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* |
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* <p><b>This is NOT part of any API supported by Sun Microsystems. |
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* If you write code that depends on this, you do so at your own |
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* risk. This code and its internal interfaces are subject to change |
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* or deletion without notice.</b></p> |
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* |
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* @author Peter von der Ahé |
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*/ |
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public class JavacTrees extends Trees { |
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private final Resolve resolve; |
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private final Enter enter; |
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private final Log log; |
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private final MemberEnter memberEnter; |
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private final Attr attr; |
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private final TreeMaker treeMaker; |
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private final JavacElements elements; |
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private final JavacTaskImpl javacTaskImpl; |
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public static JavacTrees instance(JavaCompiler.CompilationTask task) { |
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if (!(task instanceof JavacTaskImpl)) |
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throw new IllegalArgumentException(); |
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return instance(((JavacTaskImpl)task).getContext()); |
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} |
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public static JavacTrees instance(ProcessingEnvironment env) { |
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if (!(env instanceof JavacProcessingEnvironment)) |
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throw new IllegalArgumentException(); |
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return instance(((JavacProcessingEnvironment)env).getContext()); |
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} |
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public static JavacTrees instance(Context context) { |
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JavacTrees instance = context.get(JavacTrees.class); |
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if (instance == null) |
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instance = new JavacTrees(context); |
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return instance; |
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} |
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private JavacTrees(Context context) { |
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context.put(JavacTrees.class, this); |
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attr = Attr.instance(context); |
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enter = Enter.instance(context); |
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elements = JavacElements.instance(context); |
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log = Log.instance(context); |
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resolve = Resolve.instance(context); |
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treeMaker = TreeMaker.instance(context); |
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memberEnter = MemberEnter.instance(context); |
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javacTaskImpl = context.get(JavacTaskImpl.class); |
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} |
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public SourcePositions getSourcePositions() { |
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return new SourcePositions() { |
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public long getStartPosition(CompilationUnitTree file, Tree tree) { |
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return TreeInfo.getStartPos((JCTree) tree); |
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} |
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public long getEndPosition(CompilationUnitTree file, Tree tree) { |
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Map<JCTree,Integer> endPositions = ((JCCompilationUnit) file).endPositions; |
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return TreeInfo.getEndPos((JCTree) tree, endPositions); |
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} |
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}; |
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} |
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public JCClassDecl getTree(TypeElement element) { |
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return (JCClassDecl) getTree((Element) element); |
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} |
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public JCMethodDecl getTree(ExecutableElement method) { |
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return (JCMethodDecl) getTree((Element) method); |
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} |
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public JCTree getTree(Element element) { |
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Symbol symbol = (Symbol) element; |
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TypeSymbol enclosing = symbol.enclClass(); |
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Env<AttrContext> env = enter.getEnv(enclosing); |
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if (env == null) |
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return null; |
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JCClassDecl classNode = env.enclClass; |
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if (classNode != null) { |
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if (TreeInfo.symbolFor(classNode) == element) |
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return classNode; |
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for (JCTree node : classNode.getMembers()) |
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if (TreeInfo.symbolFor(node) == element) |
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return node; |
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} |
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return null; |
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} |
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public JCTree getTree(Element e, AnnotationMirror a) { |
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return getTree(e, a, null); |
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} |
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public JCTree getTree(Element e, AnnotationMirror a, AnnotationValue v) { |
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Pair<JCTree, JCCompilationUnit> treeTopLevel = elements.getTreeAndTopLevel(e, a, v); |
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if (treeTopLevel == null) |
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return null; |
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return treeTopLevel.fst; |
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} |
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public TreePath getPath(CompilationUnitTree unit, Tree node) { |
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return TreePath.getPath(unit, node); |
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} |
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public TreePath getPath(Element e) { |
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return getPath(e, null, null); |
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} |
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public TreePath getPath(Element e, AnnotationMirror a) { |
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return getPath(e, a, null); |
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} |
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public TreePath getPath(Element e, AnnotationMirror a, AnnotationValue v) { |
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final Pair<JCTree, JCCompilationUnit> treeTopLevel = elements.getTreeAndTopLevel(e, a, v); |
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if (treeTopLevel == null) |
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return null; |
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return TreePath.getPath(treeTopLevel.snd, treeTopLevel.fst); |
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} |
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public Element getElement(TreePath path) { |
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Tree t = path.getLeaf(); |
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return TreeInfo.symbolFor((JCTree) t); |
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} |
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public TypeMirror getTypeMirror(TreePath path) { |
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Tree t = path.getLeaf(); |
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return ((JCTree)t).type; |
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} |
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public JavacScope getScope(TreePath path) { |
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return new JavacScope(getAttrContext(path)); |
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} |
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public boolean isAccessible(Scope scope, TypeElement type) { |
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if (scope instanceof JavacScope && type instanceof ClassSymbol) { |
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Env<AttrContext> env = ((JavacScope) scope).env; |
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return resolve.isAccessible(env, (ClassSymbol)type); |
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} else |
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return false; |
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} |
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public boolean isAccessible(Scope scope, Element member, DeclaredType type) { |
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if (scope instanceof JavacScope |
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&& member instanceof Symbol |
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&& type instanceof com.sun.tools.javac.code.Type) { |
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Env<AttrContext> env = ((JavacScope) scope).env; |
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return resolve.isAccessible(env, (com.sun.tools.javac.code.Type)type, (Symbol)member); |
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} else |
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return false; |
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} |
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private Env<AttrContext> getAttrContext(TreePath path) { |
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if (!(path.getLeaf() instanceof JCTree)) // implicit null-check |
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throw new IllegalArgumentException(); |
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// if we're being invoked via from a JSR199 client, we need to make sure |
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// all the classes have been entered; if we're being invoked from JSR269, |
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// then the classes will already have been entered. |
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if (javacTaskImpl != null) { |
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try { |
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javacTaskImpl.enter(null); |
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} catch (IOException e) { |
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throw new Error("unexpected error while entering symbols: " + e); |
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} |
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} |
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JCCompilationUnit unit = (JCCompilationUnit) path.getCompilationUnit(); |
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Copier copier = new Copier(treeMaker.forToplevel(unit)); |
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Env<AttrContext> env = null; |
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JCMethodDecl method = null; |
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JCVariableDecl field = null; |
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List<Tree> l = List.nil(); |
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TreePath p = path; |
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while (p != null) { |
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l = l.prepend(p.getLeaf()); |
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p = p.getParentPath(); |
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} |
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for ( ; l.nonEmpty(); l = l.tail) { |
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Tree tree = l.head; |
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switch (tree.getKind()) { |
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case COMPILATION_UNIT: |
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// System.err.println("COMP: " + ((JCCompilationUnit)tree).sourcefile); |
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env = enter.getTopLevelEnv((JCCompilationUnit)tree); |
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break; |
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case CLASS: |
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// System.err.println("CLASS: " + ((JCClassDecl)tree).sym.getSimpleName()); |
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env = enter.getClassEnv(((JCClassDecl)tree).sym); |
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break; |
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case METHOD: |
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// System.err.println("METHOD: " + ((JCMethodDecl)tree).sym.getSimpleName()); |
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method = (JCMethodDecl)tree; |
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break; |
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case VARIABLE: |
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// System.err.println("FIELD: " + ((JCVariableDecl)tree).sym.getSimpleName()); |
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field = (JCVariableDecl)tree; |
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break; |
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case BLOCK: { |
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// System.err.println("BLOCK: "); |
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if (method != null) |
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env = memberEnter.getMethodEnv(method, env); |
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JCTree body = copier.copy((JCTree)tree, (JCTree) path.getLeaf()); |
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env = attribStatToTree(body, env, copier.leafCopy); |
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return env; |
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} |
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default: |
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// System.err.println("DEFAULT: " + tree.getKind()); |
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if (field != null && field.getInitializer() == tree) { |
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env = memberEnter.getInitEnv(field, env); |
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JCExpression expr = copier.copy((JCExpression)tree, (JCTree) path.getLeaf()); |
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env = attribExprToTree(expr, env, copier.leafCopy); |
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return env; |
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} |
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} |
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} |
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return field != null ? memberEnter.getInitEnv(field, env) : env; |
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} |
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private Env<AttrContext> attribStatToTree(JCTree stat, Env<AttrContext>env, JCTree tree) { |
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JavaFileObject prev = log.useSource(env.toplevel.sourcefile); |
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try { |
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return attr.attribStatToTree(stat, env, tree); |
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} finally { |
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log.useSource(prev); |
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} |
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} |
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private Env<AttrContext> attribExprToTree(JCExpression expr, Env<AttrContext>env, JCTree tree) { |
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JavaFileObject prev = log.useSource(env.toplevel.sourcefile); |
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try { |
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return attr.attribExprToTree(expr, env, tree); |
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} finally { |
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log.useSource(prev); |
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} |
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} |
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/** |
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* Makes a copy of a tree, noting the value resulting from copying a particular leaf. |
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**/ |
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static class Copier extends TreeCopier<JCTree> { |
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JCTree leafCopy = null; |
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Copier(TreeMaker M) { |
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super(M); |
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} |
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public <T extends JCTree> T copy(T t, JCTree leaf) { |
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T t2 = super.copy(t, leaf); |
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if (t == leaf) |
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leafCopy = t2; |
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return t2; |
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} |
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} |
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873b053bf757
6557752: Original type of an AST should be made available even if it is replaced with an ErrorType
jjg
parents:
10
diff
changeset
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873b053bf757
6557752: Original type of an AST should be made available even if it is replaced with an ErrorType
jjg
parents:
10
diff
changeset
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/** |
873b053bf757
6557752: Original type of an AST should be made available even if it is replaced with an ErrorType
jjg
parents:
10
diff
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* Gets the original type from the ErrorType object. |
873b053bf757
6557752: Original type of an AST should be made available even if it is replaced with an ErrorType
jjg
parents:
10
diff
changeset
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* @param errorType The errorType for which we want to get the original type. |
873b053bf757
6557752: Original type of an AST should be made available even if it is replaced with an ErrorType
jjg
parents:
10
diff
changeset
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* @returns TypeMirror corresponding to the original type, replaced by the ErrorType. |
873b053bf757
6557752: Original type of an AST should be made available even if it is replaced with an ErrorType
jjg
parents:
10
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changeset
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* noType (type.tag == NONE) is returned if there is no original type. |
873b053bf757
6557752: Original type of an AST should be made available even if it is replaced with an ErrorType
jjg
parents:
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*/ |
873b053bf757
6557752: Original type of an AST should be made available even if it is replaced with an ErrorType
jjg
parents:
10
diff
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public TypeMirror getOriginalType(javax.lang.model.type.ErrorType errorType) { |
873b053bf757
6557752: Original type of an AST should be made available even if it is replaced with an ErrorType
jjg
parents:
10
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if (errorType instanceof com.sun.tools.javac.code.Type.ErrorType) { |
873b053bf757
6557752: Original type of an AST should be made available even if it is replaced with an ErrorType
jjg
parents:
10
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return ((com.sun.tools.javac.code.Type.ErrorType)errorType).getOriginalType(); |
873b053bf757
6557752: Original type of an AST should be made available even if it is replaced with an ErrorType
jjg
parents:
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} |
873b053bf757
6557752: Original type of an AST should be made available even if it is replaced with an ErrorType
jjg
parents:
10
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873b053bf757
6557752: Original type of an AST should be made available even if it is replaced with an ErrorType
jjg
parents:
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return com.sun.tools.javac.code.Type.noType; |
873b053bf757
6557752: Original type of an AST should be made available even if it is replaced with an ErrorType
jjg
parents:
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} |
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} |