duke@1: /* jlahoda@1704: * Copyright (c) 2005, 2013, Oracle and/or its affiliates. All rights reserved. duke@1: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. duke@1: * duke@1: * This code is free software; you can redistribute it and/or modify it duke@1: * under the terms of the GNU General Public License version 2 only, as ohair@554: * published by the Free Software Foundation. Oracle designates this duke@1: * particular file as subject to the "Classpath" exception as provided ohair@554: * by Oracle in the LICENSE file that accompanied this code. duke@1: * duke@1: * This code is distributed in the hope that it will be useful, but WITHOUT duke@1: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or duke@1: * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License duke@1: * version 2 for more details (a copy is included in the LICENSE file that duke@1: * accompanied this code). duke@1: * duke@1: * You should have received a copy of the GNU General Public License version duke@1: * 2 along with this work; if not, write to the Free Software Foundation, duke@1: * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. duke@1: * ohair@554: * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA ohair@554: * or visit www.oracle.com if you need additional information or have any ohair@554: * questions. duke@1: */ duke@1: duke@1: package com.sun.tools.javac.api; duke@1: duke@1: import java.io.IOException; jjg@1409: import java.util.HashSet; jjg@1409: import java.util.Set; jjg@1210: duke@1: import javax.annotation.processing.ProcessingEnvironment; duke@1: import javax.lang.model.element.AnnotationMirror; duke@1: import javax.lang.model.element.AnnotationValue; duke@1: import javax.lang.model.element.Element; duke@1: import javax.lang.model.element.ExecutableElement; duke@1: import javax.lang.model.element.TypeElement; duke@1: import javax.lang.model.type.DeclaredType; jjg@988: import javax.lang.model.type.TypeKind; duke@1: import javax.lang.model.type.TypeMirror; jjg@308: import javax.tools.Diagnostic; duke@1: import javax.tools.JavaCompiler; duke@1: import javax.tools.JavaFileObject; duke@1: jjg@1409: import com.sun.source.doctree.DocCommentTree; jlahoda@1704: import com.sun.source.doctree.DocTree; jjg@1409: import com.sun.source.doctree.ReferenceTree; jjg@988: import com.sun.source.tree.CatchTree; duke@1: import com.sun.source.tree.CompilationUnitTree; duke@1: import com.sun.source.tree.Scope; duke@1: import com.sun.source.tree.Tree; jlahoda@1704: import com.sun.source.util.DocSourcePositions; jlahoda@1704: import com.sun.source.util.DocTreeScanner; jjg@1409: import com.sun.source.util.DocTrees; jjg@1210: import com.sun.source.util.JavacTask; duke@1: import com.sun.source.util.TreePath; jjg@672: import com.sun.tools.javac.code.Flags; jjg@1409: import com.sun.tools.javac.code.Kinds; jjg@1210: import com.sun.tools.javac.code.Symbol; duke@1: import com.sun.tools.javac.code.Symbol.ClassSymbol; jjg@1409: import com.sun.tools.javac.code.Symbol.MethodSymbol; jjg@1409: import com.sun.tools.javac.code.Symbol.PackageSymbol; duke@1: import com.sun.tools.javac.code.Symbol.TypeSymbol; jjg@1409: import com.sun.tools.javac.code.Symbol.VarSymbol; jjg@1409: import com.sun.tools.javac.code.Type; jjg@1409: import com.sun.tools.javac.code.Type.ArrayType; jjg@1409: import com.sun.tools.javac.code.Type.ClassType; jjg@1409: import com.sun.tools.javac.code.Type.ErrorType; jjg@988: import com.sun.tools.javac.code.Type.UnionClassType; jjg@1409: import com.sun.tools.javac.code.Types; jjg@1409: import com.sun.tools.javac.code.Types.TypeRelation; duke@1: import com.sun.tools.javac.comp.Attr; duke@1: import com.sun.tools.javac.comp.AttrContext; duke@1: import com.sun.tools.javac.comp.Enter; duke@1: import com.sun.tools.javac.comp.Env; duke@1: import com.sun.tools.javac.comp.MemberEnter; duke@1: import com.sun.tools.javac.comp.Resolve; duke@1: import com.sun.tools.javac.model.JavacElements; jjg@1357: import com.sun.tools.javac.processing.JavacProcessingEnvironment; jjg@1409: import com.sun.tools.javac.tree.DCTree; jlahoda@1704: import com.sun.tools.javac.tree.DCTree.DCBlockTag; jjg@1409: import com.sun.tools.javac.tree.DCTree.DCDocComment; jlahoda@1704: import com.sun.tools.javac.tree.DCTree.DCEndPosTree; jlahoda@1704: import com.sun.tools.javac.tree.DCTree.DCErroneous; jlahoda@1704: import com.sun.tools.javac.tree.DCTree.DCIdentifier; jlahoda@1704: import com.sun.tools.javac.tree.DCTree.DCParam; jjg@1409: import com.sun.tools.javac.tree.DCTree.DCReference; jlahoda@1704: import com.sun.tools.javac.tree.DCTree.DCText; jjg@1280: import com.sun.tools.javac.tree.EndPosTable; jjg@1210: import com.sun.tools.javac.tree.JCTree; duke@1: import com.sun.tools.javac.tree.JCTree.*; duke@1: import com.sun.tools.javac.tree.TreeCopier; duke@1: import com.sun.tools.javac.tree.TreeInfo; duke@1: import com.sun.tools.javac.tree.TreeMaker; jjg@1455: import com.sun.tools.javac.util.Abort; jjg@1090: import com.sun.tools.javac.util.Assert; duke@1: import com.sun.tools.javac.util.Context; jjg@308: import com.sun.tools.javac.util.JCDiagnostic; duke@1: import com.sun.tools.javac.util.List; jjg@1409: import com.sun.tools.javac.util.ListBuffer; duke@1: import com.sun.tools.javac.util.Log; jjg@1409: import com.sun.tools.javac.util.Name; jjg@1409: import com.sun.tools.javac.util.Names; duke@1: import com.sun.tools.javac.util.Pair; jlahoda@1704: import com.sun.tools.javac.util.Position; jjg@1409: import static com.sun.tools.javac.code.TypeTag.*; duke@1: duke@1: /** duke@1: * Provides an implementation of Trees. duke@1: * jjg@581: *

This is NOT part of any supported API. duke@1: * If you write code that depends on this, you do so at your own duke@1: * risk. This code and its internal interfaces are subject to change duke@1: * or deletion without notice.

duke@1: * duke@1: * @author Peter von der Ahé duke@1: */ jjg@1409: public class JavacTrees extends DocTrees { duke@1: jjg@696: // in a world of a single context per compilation, these would all be final jjg@696: private Resolve resolve; jjg@696: private Enter enter; jjg@696: private Log log; jjg@696: private MemberEnter memberEnter; jjg@696: private Attr attr; jjg@696: private TreeMaker treeMaker; jjg@696: private JavacElements elements; jjg@696: private JavacTaskImpl javacTaskImpl; jjg@1409: private Names names; jjg@1409: private Types types; duke@1: jjg@1210: // called reflectively from Trees.instance(CompilationTask task) duke@1: public static JavacTrees instance(JavaCompiler.CompilationTask task) { jjg@1416: if (!(task instanceof BasicJavacTask)) duke@1: throw new IllegalArgumentException(); jjg@1416: return instance(((BasicJavacTask)task).getContext()); duke@1: } duke@1: jjg@1210: // called reflectively from Trees.instance(ProcessingEnvironment env) duke@1: public static JavacTrees instance(ProcessingEnvironment env) { duke@1: if (!(env instanceof JavacProcessingEnvironment)) duke@1: throw new IllegalArgumentException(); duke@1: return instance(((JavacProcessingEnvironment)env).getContext()); duke@1: } duke@1: duke@1: public static JavacTrees instance(Context context) { duke@1: JavacTrees instance = context.get(JavacTrees.class); duke@1: if (instance == null) duke@1: instance = new JavacTrees(context); duke@1: return instance; duke@1: } duke@1: ksrini@1327: protected JavacTrees(Context context) { duke@1: context.put(JavacTrees.class, this); jjg@696: init(context); jjg@696: } jjg@696: jjg@696: public void updateContext(Context context) { jjg@696: init(context); jjg@696: } jjg@696: jjg@696: private void init(Context context) { duke@1: attr = Attr.instance(context); duke@1: enter = Enter.instance(context); duke@1: elements = JavacElements.instance(context); duke@1: log = Log.instance(context); duke@1: resolve = Resolve.instance(context); duke@1: treeMaker = TreeMaker.instance(context); duke@1: memberEnter = MemberEnter.instance(context); jjg@1409: names = Names.instance(context); jjg@1409: types = Types.instance(context); jjg@1210: jjg@1210: JavacTask t = context.get(JavacTask.class); jjg@1210: if (t instanceof JavacTaskImpl) jjg@1210: javacTaskImpl = (JavacTaskImpl) t; duke@1: } duke@1: jlahoda@1704: public DocSourcePositions getSourcePositions() { jlahoda@1704: return new DocSourcePositions() { duke@1: public long getStartPosition(CompilationUnitTree file, Tree tree) { duke@1: return TreeInfo.getStartPos((JCTree) tree); duke@1: } duke@1: duke@1: public long getEndPosition(CompilationUnitTree file, Tree tree) { ksrini@1138: EndPosTable endPosTable = ((JCCompilationUnit) file).endPositions; ksrini@1138: return TreeInfo.getEndPos((JCTree) tree, endPosTable); duke@1: } jlahoda@1704: jlahoda@1704: public long getStartPosition(CompilationUnitTree file, DocCommentTree comment, DocTree tree) { jlahoda@1704: return ((DCTree) tree).getSourcePosition((DCDocComment) comment); jlahoda@1704: } jlahoda@1704: @SuppressWarnings("fallthrough") jlahoda@1704: public long getEndPosition(CompilationUnitTree file, DocCommentTree comment, DocTree tree) { jlahoda@1704: DCDocComment dcComment = (DCDocComment) comment; jlahoda@1704: if (tree instanceof DCEndPosTree) { jlahoda@1704: int endPos = ((DCEndPosTree) tree).getEndPos(dcComment); jlahoda@1704: jlahoda@1704: if (endPos != Position.NOPOS) { jlahoda@1704: return endPos; jlahoda@1704: } jlahoda@1704: } jlahoda@1704: int correction = 0; jlahoda@1704: switch (tree.getKind()) { jlahoda@1704: case TEXT: jlahoda@1704: DCText text = (DCText) tree; jlahoda@1704: jlahoda@1704: return dcComment.comment.getSourcePos(text.pos + text.text.length()); jlahoda@1704: case ERRONEOUS: jlahoda@1704: DCErroneous err = (DCErroneous) tree; jlahoda@1704: jlahoda@1704: return dcComment.comment.getSourcePos(err.pos + err.body.length()); jlahoda@1704: case IDENTIFIER: jlahoda@1704: DCIdentifier ident = (DCIdentifier) tree; jlahoda@1704: jlahoda@1704: return dcComment.comment.getSourcePos(ident.pos + (ident.name != names.error ? ident.name.length() : 0)); jlahoda@1704: case PARAM: jlahoda@1704: DCParam param = (DCParam) tree; jlahoda@1704: jlahoda@1704: if (param.isTypeParameter && param.getDescription().isEmpty()) { jlahoda@1704: correction = 1; jlahoda@1704: } jlahoda@1704: case AUTHOR: case DEPRECATED: case RETURN: case SEE: jlahoda@1704: case SERIAL: case SERIAL_DATA: case SERIAL_FIELD: case SINCE: jlahoda@1704: case THROWS: case UNKNOWN_BLOCK_TAG: case VERSION: { jlahoda@1704: DocTree last = getLastChild(tree); jlahoda@1704: jlahoda@1704: if (last != null) { jlahoda@1704: return getEndPosition(file, comment, last) + correction; jlahoda@1704: } jlahoda@1704: jlahoda@1704: DCBlockTag block = (DCBlockTag) tree; jlahoda@1704: jlahoda@1704: return dcComment.comment.getSourcePos(block.pos + block.getTagName().length() + 1); jlahoda@1704: } jlahoda@1704: default: jlahoda@1704: DocTree last = getLastChild(tree); jlahoda@1704: jlahoda@1704: if (last != null) { jlahoda@1704: return getEndPosition(file, comment, last); jlahoda@1704: } jlahoda@1704: break; jlahoda@1704: } jlahoda@1704: jlahoda@1704: return Position.NOPOS; jlahoda@1704: } duke@1: }; duke@1: } duke@1: jlahoda@1704: private DocTree getLastChild(DocTree tree) { jlahoda@1704: final DocTree[] last = new DocTree[] {null}; jlahoda@1704: jlahoda@1704: tree.accept(new DocTreeScanner() { jlahoda@1704: @Override public Void scan(DocTree node, Void p) { jlahoda@1704: if (node != null) last[0] = node; jlahoda@1704: return null; jlahoda@1704: } jlahoda@1704: }, null); jlahoda@1704: jlahoda@1704: return last[0]; jlahoda@1704: } jlahoda@1704: duke@1: public JCClassDecl getTree(TypeElement element) { duke@1: return (JCClassDecl) getTree((Element) element); duke@1: } duke@1: duke@1: public JCMethodDecl getTree(ExecutableElement method) { duke@1: return (JCMethodDecl) getTree((Element) method); duke@1: } duke@1: duke@1: public JCTree getTree(Element element) { duke@1: Symbol symbol = (Symbol) element; duke@1: TypeSymbol enclosing = symbol.enclClass(); duke@1: Env env = enter.getEnv(enclosing); duke@1: if (env == null) duke@1: return null; duke@1: JCClassDecl classNode = env.enclClass; duke@1: if (classNode != null) { duke@1: if (TreeInfo.symbolFor(classNode) == element) duke@1: return classNode; duke@1: for (JCTree node : classNode.getMembers()) duke@1: if (TreeInfo.symbolFor(node) == element) duke@1: return node; duke@1: } duke@1: return null; duke@1: } duke@1: duke@1: public JCTree getTree(Element e, AnnotationMirror a) { duke@1: return getTree(e, a, null); duke@1: } duke@1: duke@1: public JCTree getTree(Element e, AnnotationMirror a, AnnotationValue v) { duke@1: Pair treeTopLevel = elements.getTreeAndTopLevel(e, a, v); duke@1: if (treeTopLevel == null) duke@1: return null; duke@1: return treeTopLevel.fst; duke@1: } duke@1: duke@1: public TreePath getPath(CompilationUnitTree unit, Tree node) { duke@1: return TreePath.getPath(unit, node); duke@1: } duke@1: duke@1: public TreePath getPath(Element e) { duke@1: return getPath(e, null, null); duke@1: } duke@1: duke@1: public TreePath getPath(Element e, AnnotationMirror a) { duke@1: return getPath(e, a, null); duke@1: } duke@1: duke@1: public TreePath getPath(Element e, AnnotationMirror a, AnnotationValue v) { duke@1: final Pair treeTopLevel = elements.getTreeAndTopLevel(e, a, v); duke@1: if (treeTopLevel == null) duke@1: return null; duke@1: return TreePath.getPath(treeTopLevel.snd, treeTopLevel.fst); duke@1: } duke@1: duke@1: public Element getElement(TreePath path) { jjg@672: JCTree tree = (JCTree) path.getLeaf(); jjg@672: Symbol sym = TreeInfo.symbolFor(tree); jjg@1455: if (sym == null) { jjg@1455: if (TreeInfo.isDeclaration(tree)) { jjg@1455: for (TreePath p = path; p != null; p = p.getParentPath()) { jjg@1455: JCTree t = (JCTree) p.getLeaf(); jjg@1455: if (t.hasTag(JCTree.Tag.CLASSDEF)) { jjg@1455: JCClassDecl ct = (JCClassDecl) t; jjg@1455: if (ct.sym != null) { jjg@1455: if ((ct.sym.flags_field & Flags.UNATTRIBUTED) != 0) { jjg@1455: attr.attribClass(ct.pos(), ct.sym); jjg@1455: sym = TreeInfo.symbolFor(tree); jjg@1455: } jjg@1455: break; jjg@672: } jjg@672: } jjg@672: } jjg@1455: } else if (tree.hasTag(Tag.TOPLEVEL)) { jjg@1455: JCCompilationUnit cu = (JCCompilationUnit) tree; jjg@1455: if (cu.sourcefile.isNameCompatible("package-info", JavaFileObject.Kind.SOURCE)) { jjg@1455: sym = cu.packge; jjg@1455: } jjg@672: } jjg@672: } jjg@672: return sym; duke@1: } duke@1: jjg@1409: @Override jjg@1409: public Element getElement(TreePath path, ReferenceTree reference) { jjg@1409: if (!(reference instanceof DCReference)) jjg@1409: return null; jjg@1409: DCReference ref = (DCReference) reference; jjg@1409: jjg@1409: Env env = getAttrContext(path); jjg@1409: jjg@1409: Log.DeferredDiagnosticHandler deferredDiagnosticHandler = jjg@1409: new Log.DeferredDiagnosticHandler(log); jjg@1409: try { jjg@1409: final ClassSymbol tsym; jjg@1409: final Name memberName; jjg@1409: if (ref.qualifierExpression == null) { jjg@1409: tsym = env.enclClass.sym; jjg@1409: memberName = ref.memberName; jjg@1409: } else { jjg@1409: // See if the qualifierExpression is a type or package name. jjg@1409: // javac does not provide the exact method required, so jjg@1409: // we first check if qualifierExpression identifies a type, jjg@1409: // and if not, then we check to see if it identifies a package. jjg@1409: Type t = attr.attribType(ref.qualifierExpression, env); jjg@1409: if (t.isErroneous()) { jjg@1409: if (ref.memberName == null) { jjg@1409: // Attr/Resolve assume packages exist and create symbols as needed jjg@1409: // so use getPackageElement to restrict search to existing packages jjg@1409: PackageSymbol pck = elements.getPackageElement(ref.qualifierExpression.toString()); jjg@1409: if (pck != null) { jjg@1409: return pck; jjg@1409: } else if (ref.qualifierExpression.hasTag(JCTree.Tag.IDENT)) { jjg@1409: // fixup: allow "identifier" instead of "#identifier" jjg@1409: // for compatibility with javadoc jjg@1409: tsym = env.enclClass.sym; jjg@1409: memberName = ((JCIdent) ref.qualifierExpression).name; jjg@1409: } else jjg@1409: return null; jjg@1409: } else { jjg@1409: return null; jjg@1409: } jjg@1409: } else { jjg@1409: tsym = (ClassSymbol) t.tsym; jjg@1409: memberName = ref.memberName; jjg@1409: } jjg@1409: } jjg@1409: jjg@1409: if (memberName == null) jjg@1409: return tsym; jjg@1409: jjg@1409: final List paramTypes; jjg@1409: if (ref.paramTypes == null) jjg@1409: paramTypes = null; jjg@1409: else { jjg@1409: ListBuffer lb = new ListBuffer(); jjg@1409: for (List l = ref.paramTypes; l.nonEmpty(); l = l.tail) { jjg@1409: JCTree tree = l.head; jjg@1409: Type t = attr.attribType(tree, env); jjg@1409: lb.add(t); jjg@1409: } jjg@1409: paramTypes = lb.toList(); jjg@1409: } jjg@1409: jjg@1409: Symbol msym = (memberName == tsym.name) jjg@1409: ? findConstructor(tsym, paramTypes) jjg@1409: : findMethod(tsym, memberName, paramTypes); jjg@1409: if (paramTypes != null) { jjg@1409: // explicit (possibly empty) arg list given, so cannot be a field jjg@1409: return msym; jjg@1409: } jjg@1409: jjg@1409: VarSymbol vsym = (ref.paramTypes != null) ? null : findField(tsym, memberName); jjg@1409: // prefer a field over a method with no parameters jjg@1409: if (vsym != null && jjg@1409: (msym == null || jjg@1409: types.isSubtypeUnchecked(vsym.enclClass().asType(), msym.enclClass().asType()))) { jjg@1409: return vsym; jjg@1409: } else { jjg@1409: return msym; jjg@1409: } jjg@1455: } catch (Abort e) { // may be thrown by Check.completionError in case of bad class file jjg@1455: return null; jjg@1409: } finally { jjg@1409: log.popDiagnosticHandler(deferredDiagnosticHandler); jjg@1409: } jjg@1409: } jjg@1409: jjg@1409: /** @see com.sun.tools.javadoc.ClassDocImpl#findField */ jjg@1409: private VarSymbol findField(ClassSymbol tsym, Name fieldName) { jjg@1409: return searchField(tsym, fieldName, new HashSet()); jjg@1409: } jjg@1409: jjg@1409: /** @see com.sun.tools.javadoc.ClassDocImpl#searchField */ jjg@1409: private VarSymbol searchField(ClassSymbol tsym, Name fieldName, Set searched) { jjg@1409: if (searched.contains(tsym)) { jjg@1409: return null; jjg@1409: } jjg@1409: searched.add(tsym); jjg@1409: jjg@1409: for (com.sun.tools.javac.code.Scope.Entry e = tsym.members().lookup(fieldName); jjg@1409: e.scope != null; e = e.next()) { jjg@1409: if (e.sym.kind == Kinds.VAR) { jjg@1409: return (VarSymbol)e.sym; jjg@1409: } jjg@1409: } jjg@1409: jjg@1409: //### If we found a VarSymbol above, but which did not pass jjg@1409: //### the modifier filter, we should return failure here! jjg@1409: jjg@1409: ClassSymbol encl = tsym.owner.enclClass(); jjg@1409: if (encl != null) { jjg@1409: VarSymbol vsym = searchField(encl, fieldName, searched); jjg@1409: if (vsym != null) { jjg@1409: return vsym; jjg@1409: } jjg@1409: } jjg@1409: jjg@1409: // search superclass jjg@1409: Type superclass = tsym.getSuperclass(); jjg@1409: if (superclass.tsym != null) { jjg@1409: VarSymbol vsym = searchField((ClassSymbol) superclass.tsym, fieldName, searched); jjg@1409: if (vsym != null) { jjg@1409: return vsym; jjg@1409: } jjg@1409: } jjg@1409: jjg@1409: // search interfaces jjg@1409: List intfs = tsym.getInterfaces(); jjg@1409: for (List l = intfs; l.nonEmpty(); l = l.tail) { jjg@1409: Type intf = l.head; jjg@1409: if (intf.isErroneous()) continue; jjg@1409: VarSymbol vsym = searchField((ClassSymbol) intf.tsym, fieldName, searched); jjg@1409: if (vsym != null) { jjg@1409: return vsym; jjg@1409: } jjg@1409: } jjg@1409: jjg@1409: return null; jjg@1409: } jjg@1409: jjg@1409: /** @see com.sun.tools.javadoc.ClassDocImpl#findConstructor */ jjg@1409: MethodSymbol findConstructor(ClassSymbol tsym, List paramTypes) { jjg@1409: for (com.sun.tools.javac.code.Scope.Entry e = tsym.members().lookup(names.init); jjg@1409: e.scope != null; e = e.next()) { jjg@1409: if (e.sym.kind == Kinds.MTH) { jjg@1409: if (hasParameterTypes((MethodSymbol) e.sym, paramTypes)) { jjg@1409: return (MethodSymbol) e.sym; jjg@1409: } jjg@1409: } jjg@1409: } jjg@1409: return null; jjg@1409: } jjg@1409: jjg@1409: /** @see com.sun.tools.javadoc.ClassDocImpl#findMethod */ jjg@1409: private MethodSymbol findMethod(ClassSymbol tsym, Name methodName, List paramTypes) { jjg@1409: return searchMethod(tsym, methodName, paramTypes, new HashSet()); jjg@1409: } jjg@1409: jjg@1409: /** @see com.sun.tools.javadoc.ClassDocImpl#searchMethod */ jjg@1409: private MethodSymbol searchMethod(ClassSymbol tsym, Name methodName, jjg@1409: List paramTypes, Set searched) { jjg@1409: //### Note that this search is not necessarily what the compiler would do! jjg@1409: jjg@1409: // do not match constructors jjg@1409: if (methodName == names.init) jjg@1409: return null; jjg@1409: jjg@1409: if (searched.contains(tsym)) jjg@1409: return null; jjg@1409: searched.add(tsym); jjg@1409: jjg@1409: // search current class jjg@1409: com.sun.tools.javac.code.Scope.Entry e = tsym.members().lookup(methodName); jjg@1409: jjg@1409: //### Using modifier filter here isn't really correct, jjg@1409: //### but emulates the old behavior. Instead, we should jjg@1409: //### apply the normal rules of visibility and inheritance. jjg@1409: jjg@1409: if (paramTypes == null) { jjg@1409: // If no parameters specified, we are allowed to return jjg@1409: // any method with a matching name. In practice, the old jjg@1409: // code returned the first method, which is now the last! jjg@1409: // In order to provide textually identical results, we jjg@1409: // attempt to emulate the old behavior. jjg@1409: MethodSymbol lastFound = null; jjg@1409: for (; e.scope != null; e = e.next()) { jjg@1409: if (e.sym.kind == Kinds.MTH) { jjg@1409: if (e.sym.name == methodName) { jjg@1409: lastFound = (MethodSymbol)e.sym; jjg@1409: } jjg@1409: } jjg@1409: } jjg@1409: if (lastFound != null) { jjg@1409: return lastFound; jjg@1409: } jjg@1409: } else { jjg@1409: for (; e.scope != null; e = e.next()) { jjg@1409: if (e.sym != null && jjg@1409: e.sym.kind == Kinds.MTH) { jjg@1409: if (hasParameterTypes((MethodSymbol) e.sym, paramTypes)) { jjg@1409: return (MethodSymbol) e.sym; jjg@1409: } jjg@1409: } jjg@1409: } jjg@1409: } jjg@1409: jjg@1409: //### If we found a MethodSymbol above, but which did not pass jjg@1409: //### the modifier filter, we should return failure here! jjg@1409: jjg@1409: // search superclass jjg@1409: Type superclass = tsym.getSuperclass(); jjg@1409: if (superclass.tsym != null) { jjg@1409: MethodSymbol msym = searchMethod((ClassSymbol) superclass.tsym, methodName, paramTypes, searched); jjg@1409: if (msym != null) { jjg@1409: return msym; jjg@1409: } jjg@1409: } jjg@1409: jjg@1409: // search interfaces jjg@1409: List intfs = tsym.getInterfaces(); jjg@1409: for (List l = intfs; l.nonEmpty(); l = l.tail) { jjg@1409: Type intf = l.head; jjg@1409: if (intf.isErroneous()) continue; jjg@1409: MethodSymbol msym = searchMethod((ClassSymbol) intf.tsym, methodName, paramTypes, searched); jjg@1409: if (msym != null) { jjg@1409: return msym; jjg@1409: } jjg@1409: } jjg@1409: jjg@1409: // search enclosing class jjg@1409: ClassSymbol encl = tsym.owner.enclClass(); jjg@1409: if (encl != null) { jjg@1409: MethodSymbol msym = searchMethod(encl, methodName, paramTypes, searched); jjg@1409: if (msym != null) { jjg@1409: return msym; jjg@1409: } jjg@1409: } jjg@1409: jjg@1409: return null; jjg@1409: } jjg@1409: jjg@1409: /** @see com.sun.tools.javadoc.ClassDocImpl */ jjg@1409: private boolean hasParameterTypes(MethodSymbol method, List paramTypes) { jjg@1409: if (paramTypes == null) jjg@1409: return true; jjg@1409: jjg@1409: if (method.params().size() != paramTypes.size()) jjg@1409: return false; jjg@1409: jjg@1409: List methodParamTypes = types.erasureRecursive(method.asType()).getParameterTypes(); jjg@1409: jjg@1409: return (Type.isErroneous(paramTypes)) jjg@1409: ? fuzzyMatch(paramTypes, methodParamTypes) jjg@1409: : types.isSameTypes(paramTypes, methodParamTypes); jjg@1409: } jjg@1409: jjg@1409: boolean fuzzyMatch(List paramTypes, List methodParamTypes) { jjg@1409: List l1 = paramTypes; jjg@1409: List l2 = methodParamTypes; jjg@1409: while (l1.nonEmpty()) { jjg@1409: if (!fuzzyMatch(l1.head, l2.head)) jjg@1409: return false; jjg@1409: l1 = l1.tail; jjg@1409: l2 = l2.tail; jjg@1409: } jjg@1409: return true; jjg@1409: } jjg@1409: jjg@1409: boolean fuzzyMatch(Type paramType, Type methodParamType) { jjg@1409: Boolean b = fuzzyMatcher.visit(paramType, methodParamType); jjg@1409: return (b == Boolean.TRUE); jjg@1409: } jjg@1409: jjg@1409: TypeRelation fuzzyMatcher = new TypeRelation() { jjg@1409: @Override jjg@1409: public Boolean visitType(Type t, Type s) { jjg@1409: if (t == s) jjg@1409: return true; jjg@1409: jjg@1409: if (s.isPartial()) jjg@1409: return visit(s, t); jjg@1409: jjg@1409: switch (t.getTag()) { jjg@1409: case BYTE: case CHAR: case SHORT: case INT: case LONG: case FLOAT: jjg@1409: case DOUBLE: case BOOLEAN: case VOID: case BOT: case NONE: jjg@1409: return t.getTag() == s.getTag(); jjg@1409: jjg@1409: default: jjg@1409: throw new AssertionError("fuzzyMatcher " + t.getTag()); jjg@1409: } jjg@1409: } jjg@1409: jjg@1409: @Override jjg@1409: public Boolean visitArrayType(ArrayType t, Type s) { jjg@1409: if (t == s) jjg@1409: return true; jjg@1409: jjg@1409: if (s.isPartial()) jjg@1409: return visit(s, t); jjg@1409: jjg@1409: return s.getTag() == ARRAY jjg@1409: && visit(t.elemtype, types.elemtype(s)); jjg@1409: } jjg@1409: jjg@1409: @Override jjg@1409: public Boolean visitClassType(ClassType t, Type s) { jjg@1409: if (t == s) jjg@1409: return true; jjg@1409: jjg@1409: if (s.isPartial()) jjg@1409: return visit(s, t); jjg@1409: jjg@1409: return t.tsym == s.tsym; jjg@1409: } jjg@1409: jjg@1409: @Override jjg@1409: public Boolean visitErrorType(ErrorType t, Type s) { jjg@1409: return s.getTag() == CLASS jjg@1409: && t.tsym.name == ((ClassType) s).tsym.name; jjg@1409: } jjg@1409: }; jjg@1409: duke@1: public TypeMirror getTypeMirror(TreePath path) { duke@1: Tree t = path.getLeaf(); duke@1: return ((JCTree)t).type; duke@1: } duke@1: duke@1: public JavacScope getScope(TreePath path) { duke@1: return new JavacScope(getAttrContext(path)); duke@1: } duke@1: jjg@783: public String getDocComment(TreePath path) { jjg@783: CompilationUnitTree t = path.getCompilationUnit(); jjg@1280: Tree leaf = path.getLeaf(); jjg@1280: if (t instanceof JCTree.JCCompilationUnit && leaf instanceof JCTree) { jjg@783: JCCompilationUnit cu = (JCCompilationUnit) t; jjg@783: if (cu.docComments != null) { jjg@1280: return cu.docComments.getCommentText((JCTree) leaf); jjg@783: } jjg@783: } jjg@783: return null; jjg@783: } jjg@783: jjg@1409: public DocCommentTree getDocCommentTree(TreePath path) { jjg@1409: CompilationUnitTree t = path.getCompilationUnit(); jjg@1409: Tree leaf = path.getLeaf(); jjg@1409: if (t instanceof JCTree.JCCompilationUnit && leaf instanceof JCTree) { jjg@1409: JCCompilationUnit cu = (JCCompilationUnit) t; jjg@1409: if (cu.docComments != null) { jjg@1409: return cu.docComments.getCommentTree((JCTree) leaf); jjg@1409: } jjg@1409: } jjg@1409: return null; jjg@1409: } jjg@1409: duke@1: public boolean isAccessible(Scope scope, TypeElement type) { duke@1: if (scope instanceof JavacScope && type instanceof ClassSymbol) { duke@1: Env env = ((JavacScope) scope).env; mcimadamore@741: return resolve.isAccessible(env, (ClassSymbol)type, true); duke@1: } else duke@1: return false; duke@1: } duke@1: duke@1: public boolean isAccessible(Scope scope, Element member, DeclaredType type) { duke@1: if (scope instanceof JavacScope duke@1: && member instanceof Symbol duke@1: && type instanceof com.sun.tools.javac.code.Type) { duke@1: Env env = ((JavacScope) scope).env; mcimadamore@741: return resolve.isAccessible(env, (com.sun.tools.javac.code.Type)type, (Symbol)member, true); duke@1: } else duke@1: return false; duke@1: } duke@1: duke@1: private Env getAttrContext(TreePath path) { duke@1: if (!(path.getLeaf() instanceof JCTree)) // implicit null-check duke@1: throw new IllegalArgumentException(); duke@1: jjg@1090: // if we're being invoked from a Tree API client via parse/enter/analyze, jjg@1090: // we need to make sure all the classes have been entered; jjg@1090: // if we're being invoked from JSR 199 or JSR 269, then the classes jjg@1090: // will already have been entered. duke@1: if (javacTaskImpl != null) { duke@1: try { duke@1: javacTaskImpl.enter(null); duke@1: } catch (IOException e) { duke@1: throw new Error("unexpected error while entering symbols: " + e); duke@1: } duke@1: } duke@1: duke@1: duke@1: JCCompilationUnit unit = (JCCompilationUnit) path.getCompilationUnit(); ksrini@1327: Copier copier = createCopier(treeMaker.forToplevel(unit)); duke@1: duke@1: Env env = null; duke@1: JCMethodDecl method = null; duke@1: JCVariableDecl field = null; duke@1: duke@1: List l = List.nil(); duke@1: TreePath p = path; duke@1: while (p != null) { duke@1: l = l.prepend(p.getLeaf()); duke@1: p = p.getParentPath(); duke@1: } duke@1: duke@1: for ( ; l.nonEmpty(); l = l.tail) { duke@1: Tree tree = l.head; duke@1: switch (tree.getKind()) { duke@1: case COMPILATION_UNIT: duke@1: // System.err.println("COMP: " + ((JCCompilationUnit)tree).sourcefile); duke@1: env = enter.getTopLevelEnv((JCCompilationUnit)tree); duke@1: break; jjg@727: case ANNOTATION_TYPE: duke@1: case CLASS: jjg@727: case ENUM: jjg@682: case INTERFACE: duke@1: // System.err.println("CLASS: " + ((JCClassDecl)tree).sym.getSimpleName()); duke@1: env = enter.getClassEnv(((JCClassDecl)tree).sym); duke@1: break; duke@1: case METHOD: duke@1: // System.err.println("METHOD: " + ((JCMethodDecl)tree).sym.getSimpleName()); duke@1: method = (JCMethodDecl)tree; duke@1: break; duke@1: case VARIABLE: duke@1: // System.err.println("FIELD: " + ((JCVariableDecl)tree).sym.getSimpleName()); duke@1: field = (JCVariableDecl)tree; duke@1: break; duke@1: case BLOCK: { duke@1: // System.err.println("BLOCK: "); jjg@1090: if (method != null) { jjg@1090: try { jjg@1090: Assert.check(method.body == tree); jjg@1090: method.body = copier.copy((JCBlock)tree, (JCTree) path.getLeaf()); jjg@1090: env = memberEnter.getMethodEnv(method, env); jjg@1090: env = attribStatToTree(method.body, env, copier.leafCopy); jjg@1090: } finally { jjg@1090: method.body = (JCBlock) tree; jjg@1090: } jjg@1090: } else { jjg@1090: JCBlock body = copier.copy((JCBlock)tree, (JCTree) path.getLeaf()); jjg@1090: env = attribStatToTree(body, env, copier.leafCopy); jjg@1090: } duke@1: return env; duke@1: } duke@1: default: duke@1: // System.err.println("DEFAULT: " + tree.getKind()); duke@1: if (field != null && field.getInitializer() == tree) { duke@1: env = memberEnter.getInitEnv(field, env); duke@1: JCExpression expr = copier.copy((JCExpression)tree, (JCTree) path.getLeaf()); duke@1: env = attribExprToTree(expr, env, copier.leafCopy); duke@1: return env; duke@1: } duke@1: } duke@1: } jjg@1090: return (field != null) ? memberEnter.getInitEnv(field, env) : env; duke@1: } duke@1: duke@1: private Env attribStatToTree(JCTree stat, Envenv, JCTree tree) { duke@1: JavaFileObject prev = log.useSource(env.toplevel.sourcefile); duke@1: try { duke@1: return attr.attribStatToTree(stat, env, tree); duke@1: } finally { duke@1: log.useSource(prev); duke@1: } duke@1: } duke@1: duke@1: private Env attribExprToTree(JCExpression expr, Envenv, JCTree tree) { duke@1: JavaFileObject prev = log.useSource(env.toplevel.sourcefile); duke@1: try { duke@1: return attr.attribExprToTree(expr, env, tree); duke@1: } finally { duke@1: log.useSource(prev); duke@1: } duke@1: } duke@1: duke@1: /** duke@1: * Makes a copy of a tree, noting the value resulting from copying a particular leaf. duke@1: **/ ksrini@1327: protected static class Copier extends TreeCopier { duke@1: JCTree leafCopy = null; duke@1: ksrini@1327: protected Copier(TreeMaker M) { duke@1: super(M); duke@1: } duke@1: jjg@696: @Override duke@1: public T copy(T t, JCTree leaf) { duke@1: T t2 = super.copy(t, leaf); duke@1: if (t == leaf) duke@1: leafCopy = t2; duke@1: return t2; duke@1: } duke@1: } jjg@110: ksrini@1327: protected Copier createCopier(TreeMaker maker) { ksrini@1327: return new Copier(maker); ksrini@1327: } ksrini@1327: jjg@110: /** jjg@110: * Gets the original type from the ErrorType object. jjg@110: * @param errorType The errorType for which we want to get the original type. jjg@110: * @returns TypeMirror corresponding to the original type, replaced by the ErrorType. jjg@110: * noType (type.tag == NONE) is returned if there is no original type. jjg@110: */ jjg@110: public TypeMirror getOriginalType(javax.lang.model.type.ErrorType errorType) { jjg@110: if (errorType instanceof com.sun.tools.javac.code.Type.ErrorType) { jjg@110: return ((com.sun.tools.javac.code.Type.ErrorType)errorType).getOriginalType(); jjg@110: } jjg@110: jjg@110: return com.sun.tools.javac.code.Type.noType; jjg@110: } jjg@308: jjg@308: /** jjg@308: * Prints a message of the specified kind at the location of the jjg@308: * tree within the provided compilation unit jjg@308: * jjg@308: * @param kind the kind of message jjg@308: * @param msg the message, or an empty string if none jjg@308: * @param t the tree to use as a position hint jjg@308: * @param root the compilation unit that contains tree jjg@308: */ jjg@308: public void printMessage(Diagnostic.Kind kind, CharSequence msg, jjg@308: com.sun.source.tree.Tree t, jjg@308: com.sun.source.tree.CompilationUnitTree root) { jjg@1409: printMessage(kind, msg, ((JCTree) t).pos(), root); jjg@1409: } jjg@1409: jjg@1409: public void printMessage(Diagnostic.Kind kind, CharSequence msg, jjg@1409: com.sun.source.doctree.DocTree t, jjg@1409: com.sun.source.doctree.DocCommentTree c, jjg@1409: com.sun.source.tree.CompilationUnitTree root) { jjg@1409: printMessage(kind, msg, ((DCTree) t).pos((DCDocComment) c), root); jjg@1409: } jjg@1409: jjg@1409: private void printMessage(Diagnostic.Kind kind, CharSequence msg, jjg@1409: JCDiagnostic.DiagnosticPosition pos, jjg@1409: com.sun.source.tree.CompilationUnitTree root) { jjg@308: JavaFileObject oldSource = null; jjg@308: JavaFileObject newSource = null; jjg@308: jjg@308: newSource = root.getSourceFile(); jjg@1409: if (newSource == null) { jjg@1409: pos = null; jjg@1409: } else { jjg@308: oldSource = log.useSource(newSource); jjg@308: } jjg@308: jjg@308: try { jjg@308: switch (kind) { jjg@308: case ERROR: jjg@308: boolean prev = log.multipleErrors; jjg@308: try { jjg@308: log.error(pos, "proc.messager", msg.toString()); jjg@308: } finally { jjg@308: log.multipleErrors = prev; jjg@308: } jjg@308: break; jjg@308: jjg@308: case WARNING: jjg@308: log.warning(pos, "proc.messager", msg.toString()); jjg@308: break; jjg@308: jjg@308: case MANDATORY_WARNING: jjg@308: log.mandatoryWarning(pos, "proc.messager", msg.toString()); jjg@308: break; jjg@308: jjg@308: default: jjg@308: log.note(pos, "proc.messager", msg.toString()); jjg@308: } jjg@308: } finally { jjg@308: if (oldSource != null) jjg@308: log.useSource(oldSource); jjg@308: } jjg@308: } jjg@988: jjg@988: @Override jjg@988: public TypeMirror getLub(CatchTree tree) { jjg@988: JCCatch ct = (JCCatch) tree; jjg@988: JCVariableDecl v = ct.param; jjg@988: if (v.type != null && v.type.getKind() == TypeKind.UNION) { jjg@988: UnionClassType ut = (UnionClassType) v.type; jjg@988: return ut.getLub(); jjg@988: } else { jjg@988: return v.type; jjg@988: } jjg@988: } duke@1: }