1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/classes/com/sun/tools/javac/api/JavacTrees.java Wed Apr 27 01:34:52 2016 +0800
1.3 @@ -0,0 +1,957 @@
1.4 +/*
1.5 + * Copyright (c) 2005, 2013, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation. Oracle designates this
1.11 + * particular file as subject to the "Classpath" exception as provided
1.12 + * by Oracle in the LICENSE file that accompanied this code.
1.13 + *
1.14 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.15 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.16 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.17 + * version 2 for more details (a copy is included in the LICENSE file that
1.18 + * accompanied this code).
1.19 + *
1.20 + * You should have received a copy of the GNU General Public License version
1.21 + * 2 along with this work; if not, write to the Free Software Foundation,
1.22 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.23 + *
1.24 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.25 + * or visit www.oracle.com if you need additional information or have any
1.26 + * questions.
1.27 + */
1.28 +
1.29 +package com.sun.tools.javac.api;
1.30 +
1.31 +import java.io.IOException;
1.32 +import java.util.HashSet;
1.33 +import java.util.Set;
1.34 +
1.35 +import javax.annotation.processing.ProcessingEnvironment;
1.36 +import javax.lang.model.element.AnnotationMirror;
1.37 +import javax.lang.model.element.AnnotationValue;
1.38 +import javax.lang.model.element.Element;
1.39 +import javax.lang.model.element.ElementKind;
1.40 +import javax.lang.model.element.ExecutableElement;
1.41 +import javax.lang.model.element.TypeElement;
1.42 +import javax.lang.model.type.DeclaredType;
1.43 +import javax.lang.model.type.TypeKind;
1.44 +import javax.lang.model.type.TypeMirror;
1.45 +import javax.tools.Diagnostic;
1.46 +import javax.tools.JavaCompiler;
1.47 +import javax.tools.JavaFileObject;
1.48 +
1.49 +import com.sun.source.doctree.DocCommentTree;
1.50 +import com.sun.source.doctree.DocTree;
1.51 +import com.sun.source.tree.CatchTree;
1.52 +import com.sun.source.tree.CompilationUnitTree;
1.53 +import com.sun.source.tree.Scope;
1.54 +import com.sun.source.tree.Tree;
1.55 +import com.sun.source.util.DocSourcePositions;
1.56 +import com.sun.source.util.DocTreePath;
1.57 +import com.sun.source.util.DocTreeScanner;
1.58 +import com.sun.source.util.DocTrees;
1.59 +import com.sun.source.util.JavacTask;
1.60 +import com.sun.source.util.TreePath;
1.61 +import com.sun.tools.javac.code.Flags;
1.62 +import com.sun.tools.javac.code.Kinds;
1.63 +import com.sun.tools.javac.code.Symbol;
1.64 +import com.sun.tools.javac.code.Symbol.ClassSymbol;
1.65 +import com.sun.tools.javac.code.Symbol.MethodSymbol;
1.66 +import com.sun.tools.javac.code.Symbol.PackageSymbol;
1.67 +import com.sun.tools.javac.code.Symbol.TypeSymbol;
1.68 +import com.sun.tools.javac.code.Symbol.VarSymbol;
1.69 +import com.sun.tools.javac.code.Type;
1.70 +import com.sun.tools.javac.code.Type.ArrayType;
1.71 +import com.sun.tools.javac.code.Type.ClassType;
1.72 +import com.sun.tools.javac.code.Type.ErrorType;
1.73 +import com.sun.tools.javac.code.Type.UnionClassType;
1.74 +import com.sun.tools.javac.code.Types;
1.75 +import com.sun.tools.javac.code.Types.TypeRelation;
1.76 +import com.sun.tools.javac.comp.Attr;
1.77 +import com.sun.tools.javac.comp.AttrContext;
1.78 +import com.sun.tools.javac.comp.Enter;
1.79 +import com.sun.tools.javac.comp.Env;
1.80 +import com.sun.tools.javac.comp.MemberEnter;
1.81 +import com.sun.tools.javac.comp.Resolve;
1.82 +import com.sun.tools.javac.model.JavacElements;
1.83 +import com.sun.tools.javac.processing.JavacProcessingEnvironment;
1.84 +import com.sun.tools.javac.tree.DCTree;
1.85 +import com.sun.tools.javac.tree.DCTree.DCBlockTag;
1.86 +import com.sun.tools.javac.tree.DCTree.DCDocComment;
1.87 +import com.sun.tools.javac.tree.DCTree.DCEndPosTree;
1.88 +import com.sun.tools.javac.tree.DCTree.DCErroneous;
1.89 +import com.sun.tools.javac.tree.DCTree.DCIdentifier;
1.90 +import com.sun.tools.javac.tree.DCTree.DCParam;
1.91 +import com.sun.tools.javac.tree.DCTree.DCReference;
1.92 +import com.sun.tools.javac.tree.DCTree.DCText;
1.93 +import com.sun.tools.javac.tree.EndPosTable;
1.94 +import com.sun.tools.javac.tree.JCTree;
1.95 +import com.sun.tools.javac.tree.JCTree.*;
1.96 +import com.sun.tools.javac.tree.TreeCopier;
1.97 +import com.sun.tools.javac.tree.TreeInfo;
1.98 +import com.sun.tools.javac.tree.TreeMaker;
1.99 +import com.sun.tools.javac.util.Abort;
1.100 +import com.sun.tools.javac.util.Assert;
1.101 +import com.sun.tools.javac.util.Context;
1.102 +import com.sun.tools.javac.util.JCDiagnostic;
1.103 +import com.sun.tools.javac.util.List;
1.104 +import com.sun.tools.javac.util.ListBuffer;
1.105 +import com.sun.tools.javac.util.Log;
1.106 +import com.sun.tools.javac.util.Name;
1.107 +import com.sun.tools.javac.util.Names;
1.108 +import com.sun.tools.javac.util.Pair;
1.109 +import com.sun.tools.javac.util.Position;
1.110 +import static com.sun.tools.javac.code.TypeTag.*;
1.111 +
1.112 +/**
1.113 + * Provides an implementation of Trees.
1.114 + *
1.115 + * <p><b>This is NOT part of any supported API.
1.116 + * If you write code that depends on this, you do so at your own
1.117 + * risk. This code and its internal interfaces are subject to change
1.118 + * or deletion without notice.</b></p>
1.119 + *
1.120 + * @author Peter von der Ahé
1.121 + */
1.122 +public class JavacTrees extends DocTrees {
1.123 +
1.124 + // in a world of a single context per compilation, these would all be final
1.125 + private Resolve resolve;
1.126 + private Enter enter;
1.127 + private Log log;
1.128 + private MemberEnter memberEnter;
1.129 + private Attr attr;
1.130 + private TreeMaker treeMaker;
1.131 + private JavacElements elements;
1.132 + private JavacTaskImpl javacTaskImpl;
1.133 + private Names names;
1.134 + private Types types;
1.135 +
1.136 + // called reflectively from Trees.instance(CompilationTask task)
1.137 + public static JavacTrees instance(JavaCompiler.CompilationTask task) {
1.138 + if (!(task instanceof BasicJavacTask))
1.139 + throw new IllegalArgumentException();
1.140 + return instance(((BasicJavacTask)task).getContext());
1.141 + }
1.142 +
1.143 + // called reflectively from Trees.instance(ProcessingEnvironment env)
1.144 + public static JavacTrees instance(ProcessingEnvironment env) {
1.145 + if (!(env instanceof JavacProcessingEnvironment))
1.146 + throw new IllegalArgumentException();
1.147 + return instance(((JavacProcessingEnvironment)env).getContext());
1.148 + }
1.149 +
1.150 + public static JavacTrees instance(Context context) {
1.151 + JavacTrees instance = context.get(JavacTrees.class);
1.152 + if (instance == null)
1.153 + instance = new JavacTrees(context);
1.154 + return instance;
1.155 + }
1.156 +
1.157 + protected JavacTrees(Context context) {
1.158 + context.put(JavacTrees.class, this);
1.159 + init(context);
1.160 + }
1.161 +
1.162 + public void updateContext(Context context) {
1.163 + init(context);
1.164 + }
1.165 +
1.166 + private void init(Context context) {
1.167 + attr = Attr.instance(context);
1.168 + enter = Enter.instance(context);
1.169 + elements = JavacElements.instance(context);
1.170 + log = Log.instance(context);
1.171 + resolve = Resolve.instance(context);
1.172 + treeMaker = TreeMaker.instance(context);
1.173 + memberEnter = MemberEnter.instance(context);
1.174 + names = Names.instance(context);
1.175 + types = Types.instance(context);
1.176 +
1.177 + JavacTask t = context.get(JavacTask.class);
1.178 + if (t instanceof JavacTaskImpl)
1.179 + javacTaskImpl = (JavacTaskImpl) t;
1.180 + }
1.181 +
1.182 + public DocSourcePositions getSourcePositions() {
1.183 + return new DocSourcePositions() {
1.184 + public long getStartPosition(CompilationUnitTree file, Tree tree) {
1.185 + return TreeInfo.getStartPos((JCTree) tree);
1.186 + }
1.187 +
1.188 + public long getEndPosition(CompilationUnitTree file, Tree tree) {
1.189 + EndPosTable endPosTable = ((JCCompilationUnit) file).endPositions;
1.190 + return TreeInfo.getEndPos((JCTree) tree, endPosTable);
1.191 + }
1.192 +
1.193 + public long getStartPosition(CompilationUnitTree file, DocCommentTree comment, DocTree tree) {
1.194 + return ((DCTree) tree).getSourcePosition((DCDocComment) comment);
1.195 + }
1.196 + @SuppressWarnings("fallthrough")
1.197 + public long getEndPosition(CompilationUnitTree file, DocCommentTree comment, DocTree tree) {
1.198 + DCDocComment dcComment = (DCDocComment) comment;
1.199 + if (tree instanceof DCEndPosTree) {
1.200 + int endPos = ((DCEndPosTree) tree).getEndPos(dcComment);
1.201 +
1.202 + if (endPos != Position.NOPOS) {
1.203 + return endPos;
1.204 + }
1.205 + }
1.206 + int correction = 0;
1.207 + switch (tree.getKind()) {
1.208 + case TEXT:
1.209 + DCText text = (DCText) tree;
1.210 +
1.211 + return dcComment.comment.getSourcePos(text.pos + text.text.length());
1.212 + case ERRONEOUS:
1.213 + DCErroneous err = (DCErroneous) tree;
1.214 +
1.215 + return dcComment.comment.getSourcePos(err.pos + err.body.length());
1.216 + case IDENTIFIER:
1.217 + DCIdentifier ident = (DCIdentifier) tree;
1.218 +
1.219 + return dcComment.comment.getSourcePos(ident.pos + (ident.name != names.error ? ident.name.length() : 0));
1.220 + case PARAM:
1.221 + DCParam param = (DCParam) tree;
1.222 +
1.223 + if (param.isTypeParameter && param.getDescription().isEmpty()) {
1.224 + correction = 1;
1.225 + }
1.226 + case AUTHOR: case DEPRECATED: case RETURN: case SEE:
1.227 + case SERIAL: case SERIAL_DATA: case SERIAL_FIELD: case SINCE:
1.228 + case THROWS: case UNKNOWN_BLOCK_TAG: case VERSION: {
1.229 + DocTree last = getLastChild(tree);
1.230 +
1.231 + if (last != null) {
1.232 + return getEndPosition(file, comment, last) + correction;
1.233 + }
1.234 +
1.235 + DCBlockTag block = (DCBlockTag) tree;
1.236 +
1.237 + return dcComment.comment.getSourcePos(block.pos + block.getTagName().length() + 1);
1.238 + }
1.239 + default:
1.240 + DocTree last = getLastChild(tree);
1.241 +
1.242 + if (last != null) {
1.243 + return getEndPosition(file, comment, last);
1.244 + }
1.245 + break;
1.246 + }
1.247 +
1.248 + return Position.NOPOS;
1.249 + }
1.250 + };
1.251 + }
1.252 +
1.253 + private DocTree getLastChild(DocTree tree) {
1.254 + final DocTree[] last = new DocTree[] {null};
1.255 +
1.256 + tree.accept(new DocTreeScanner<Void, Void>() {
1.257 + @Override public Void scan(DocTree node, Void p) {
1.258 + if (node != null) last[0] = node;
1.259 + return null;
1.260 + }
1.261 + }, null);
1.262 +
1.263 + return last[0];
1.264 + }
1.265 +
1.266 + public JCClassDecl getTree(TypeElement element) {
1.267 + return (JCClassDecl) getTree((Element) element);
1.268 + }
1.269 +
1.270 + public JCMethodDecl getTree(ExecutableElement method) {
1.271 + return (JCMethodDecl) getTree((Element) method);
1.272 + }
1.273 +
1.274 + public JCTree getTree(Element element) {
1.275 + Symbol symbol = (Symbol) element;
1.276 + TypeSymbol enclosing = symbol.enclClass();
1.277 + Env<AttrContext> env = enter.getEnv(enclosing);
1.278 + if (env == null)
1.279 + return null;
1.280 + JCClassDecl classNode = env.enclClass;
1.281 + if (classNode != null) {
1.282 + if (TreeInfo.symbolFor(classNode) == element)
1.283 + return classNode;
1.284 + for (JCTree node : classNode.getMembers())
1.285 + if (TreeInfo.symbolFor(node) == element)
1.286 + return node;
1.287 + }
1.288 + return null;
1.289 + }
1.290 +
1.291 + public JCTree getTree(Element e, AnnotationMirror a) {
1.292 + return getTree(e, a, null);
1.293 + }
1.294 +
1.295 + public JCTree getTree(Element e, AnnotationMirror a, AnnotationValue v) {
1.296 + Pair<JCTree, JCCompilationUnit> treeTopLevel = elements.getTreeAndTopLevel(e, a, v);
1.297 + if (treeTopLevel == null)
1.298 + return null;
1.299 + return treeTopLevel.fst;
1.300 + }
1.301 +
1.302 + public TreePath getPath(CompilationUnitTree unit, Tree node) {
1.303 + return TreePath.getPath(unit, node);
1.304 + }
1.305 +
1.306 + public TreePath getPath(Element e) {
1.307 + return getPath(e, null, null);
1.308 + }
1.309 +
1.310 + public TreePath getPath(Element e, AnnotationMirror a) {
1.311 + return getPath(e, a, null);
1.312 + }
1.313 +
1.314 + public TreePath getPath(Element e, AnnotationMirror a, AnnotationValue v) {
1.315 + final Pair<JCTree, JCCompilationUnit> treeTopLevel = elements.getTreeAndTopLevel(e, a, v);
1.316 + if (treeTopLevel == null)
1.317 + return null;
1.318 + return TreePath.getPath(treeTopLevel.snd, treeTopLevel.fst);
1.319 + }
1.320 +
1.321 + public Symbol getElement(TreePath path) {
1.322 + JCTree tree = (JCTree) path.getLeaf();
1.323 + Symbol sym = TreeInfo.symbolFor(tree);
1.324 + if (sym == null) {
1.325 + if (TreeInfo.isDeclaration(tree)) {
1.326 + for (TreePath p = path; p != null; p = p.getParentPath()) {
1.327 + JCTree t = (JCTree) p.getLeaf();
1.328 + if (t.hasTag(JCTree.Tag.CLASSDEF)) {
1.329 + JCClassDecl ct = (JCClassDecl) t;
1.330 + if (ct.sym != null) {
1.331 + if ((ct.sym.flags_field & Flags.UNATTRIBUTED) != 0) {
1.332 + attr.attribClass(ct.pos(), ct.sym);
1.333 + sym = TreeInfo.symbolFor(tree);
1.334 + }
1.335 + break;
1.336 + }
1.337 + }
1.338 + }
1.339 + }
1.340 + }
1.341 + return sym;
1.342 + }
1.343 +
1.344 + @Override
1.345 + public Element getElement(DocTreePath path) {
1.346 + DocTree forTree = path.getLeaf();
1.347 + if (forTree instanceof DCReference)
1.348 + return attributeDocReference(path.getTreePath(), ((DCReference) forTree));
1.349 + if (forTree instanceof DCIdentifier) {
1.350 + if (path.getParentPath().getLeaf() instanceof DCParam) {
1.351 + return attributeParamIdentifier(path.getTreePath(), (DCParam) path.getParentPath().getLeaf());
1.352 + }
1.353 + }
1.354 + return null;
1.355 + }
1.356 +
1.357 + private Symbol attributeDocReference(TreePath path, DCReference ref) {
1.358 + Env<AttrContext> env = getAttrContext(path);
1.359 +
1.360 + Log.DeferredDiagnosticHandler deferredDiagnosticHandler =
1.361 + new Log.DeferredDiagnosticHandler(log);
1.362 + try {
1.363 + final TypeSymbol tsym;
1.364 + final Name memberName;
1.365 + if (ref.qualifierExpression == null) {
1.366 + tsym = env.enclClass.sym;
1.367 + memberName = ref.memberName;
1.368 + } else {
1.369 + // See if the qualifierExpression is a type or package name.
1.370 + // javac does not provide the exact method required, so
1.371 + // we first check if qualifierExpression identifies a type,
1.372 + // and if not, then we check to see if it identifies a package.
1.373 + Type t = attr.attribType(ref.qualifierExpression, env);
1.374 + if (t.isErroneous()) {
1.375 + if (ref.memberName == null) {
1.376 + // Attr/Resolve assume packages exist and create symbols as needed
1.377 + // so use getPackageElement to restrict search to existing packages
1.378 + PackageSymbol pck = elements.getPackageElement(ref.qualifierExpression.toString());
1.379 + if (pck != null) {
1.380 + return pck;
1.381 + } else if (ref.qualifierExpression.hasTag(JCTree.Tag.IDENT)) {
1.382 + // fixup: allow "identifier" instead of "#identifier"
1.383 + // for compatibility with javadoc
1.384 + tsym = env.enclClass.sym;
1.385 + memberName = ((JCIdent) ref.qualifierExpression).name;
1.386 + } else
1.387 + return null;
1.388 + } else {
1.389 + return null;
1.390 + }
1.391 + } else {
1.392 + tsym = t.tsym;
1.393 + memberName = ref.memberName;
1.394 + }
1.395 + }
1.396 +
1.397 + if (memberName == null)
1.398 + return tsym;
1.399 +
1.400 + final List<Type> paramTypes;
1.401 + if (ref.paramTypes == null)
1.402 + paramTypes = null;
1.403 + else {
1.404 + ListBuffer<Type> lb = new ListBuffer<Type>();
1.405 + for (List<JCTree> l = ref.paramTypes; l.nonEmpty(); l = l.tail) {
1.406 + JCTree tree = l.head;
1.407 + Type t = attr.attribType(tree, env);
1.408 + lb.add(t);
1.409 + }
1.410 + paramTypes = lb.toList();
1.411 + }
1.412 +
1.413 + ClassSymbol sym = (ClassSymbol) types.cvarUpperBound(tsym.type).tsym;
1.414 +
1.415 + Symbol msym = (memberName == sym.name)
1.416 + ? findConstructor(sym, paramTypes)
1.417 + : findMethod(sym, memberName, paramTypes);
1.418 + if (paramTypes != null) {
1.419 + // explicit (possibly empty) arg list given, so cannot be a field
1.420 + return msym;
1.421 + }
1.422 +
1.423 + VarSymbol vsym = (ref.paramTypes != null) ? null : findField(sym, memberName);
1.424 + // prefer a field over a method with no parameters
1.425 + if (vsym != null &&
1.426 + (msym == null ||
1.427 + types.isSubtypeUnchecked(vsym.enclClass().asType(), msym.enclClass().asType()))) {
1.428 + return vsym;
1.429 + } else {
1.430 + return msym;
1.431 + }
1.432 + } catch (Abort e) { // may be thrown by Check.completionError in case of bad class file
1.433 + return null;
1.434 + } finally {
1.435 + log.popDiagnosticHandler(deferredDiagnosticHandler);
1.436 + }
1.437 + }
1.438 +
1.439 + private Symbol attributeParamIdentifier(TreePath path, DCParam ptag) {
1.440 + Symbol javadocSymbol = getElement(path);
1.441 + if (javadocSymbol == null)
1.442 + return null;
1.443 + ElementKind kind = javadocSymbol.getKind();
1.444 + List<? extends Symbol> params = List.nil();
1.445 + if (kind == ElementKind.METHOD || kind == ElementKind.CONSTRUCTOR) {
1.446 + MethodSymbol ee = (MethodSymbol) javadocSymbol;
1.447 + params = ptag.isTypeParameter()
1.448 + ? ee.getTypeParameters()
1.449 + : ee.getParameters();
1.450 + } else if (kind.isClass() || kind.isInterface()) {
1.451 + ClassSymbol te = (ClassSymbol) javadocSymbol;
1.452 + params = te.getTypeParameters();
1.453 + }
1.454 +
1.455 + for (Symbol param : params) {
1.456 + if (param.getSimpleName() == ptag.getName().getName()) {
1.457 + return param;
1.458 + }
1.459 + }
1.460 + return null;
1.461 + }
1.462 +
1.463 + /** @see com.sun.tools.javadoc.ClassDocImpl#findField */
1.464 + private VarSymbol findField(ClassSymbol tsym, Name fieldName) {
1.465 + return searchField(tsym, fieldName, new HashSet<ClassSymbol>());
1.466 + }
1.467 +
1.468 + /** @see com.sun.tools.javadoc.ClassDocImpl#searchField */
1.469 + private VarSymbol searchField(ClassSymbol tsym, Name fieldName, Set<ClassSymbol> searched) {
1.470 + if (searched.contains(tsym)) {
1.471 + return null;
1.472 + }
1.473 + searched.add(tsym);
1.474 +
1.475 + for (com.sun.tools.javac.code.Scope.Entry e = tsym.members().lookup(fieldName);
1.476 + e.scope != null; e = e.next()) {
1.477 + if (e.sym.kind == Kinds.VAR) {
1.478 + return (VarSymbol)e.sym;
1.479 + }
1.480 + }
1.481 +
1.482 + //### If we found a VarSymbol above, but which did not pass
1.483 + //### the modifier filter, we should return failure here!
1.484 +
1.485 + ClassSymbol encl = tsym.owner.enclClass();
1.486 + if (encl != null) {
1.487 + VarSymbol vsym = searchField(encl, fieldName, searched);
1.488 + if (vsym != null) {
1.489 + return vsym;
1.490 + }
1.491 + }
1.492 +
1.493 + // search superclass
1.494 + Type superclass = tsym.getSuperclass();
1.495 + if (superclass.tsym != null) {
1.496 + VarSymbol vsym = searchField((ClassSymbol) superclass.tsym, fieldName, searched);
1.497 + if (vsym != null) {
1.498 + return vsym;
1.499 + }
1.500 + }
1.501 +
1.502 + // search interfaces
1.503 + List<Type> intfs = tsym.getInterfaces();
1.504 + for (List<Type> l = intfs; l.nonEmpty(); l = l.tail) {
1.505 + Type intf = l.head;
1.506 + if (intf.isErroneous()) continue;
1.507 + VarSymbol vsym = searchField((ClassSymbol) intf.tsym, fieldName, searched);
1.508 + if (vsym != null) {
1.509 + return vsym;
1.510 + }
1.511 + }
1.512 +
1.513 + return null;
1.514 + }
1.515 +
1.516 + /** @see com.sun.tools.javadoc.ClassDocImpl#findConstructor */
1.517 + MethodSymbol findConstructor(ClassSymbol tsym, List<Type> paramTypes) {
1.518 + for (com.sun.tools.javac.code.Scope.Entry e = tsym.members().lookup(names.init);
1.519 + e.scope != null; e = e.next()) {
1.520 + if (e.sym.kind == Kinds.MTH) {
1.521 + if (hasParameterTypes((MethodSymbol) e.sym, paramTypes)) {
1.522 + return (MethodSymbol) e.sym;
1.523 + }
1.524 + }
1.525 + }
1.526 + return null;
1.527 + }
1.528 +
1.529 + /** @see com.sun.tools.javadoc.ClassDocImpl#findMethod */
1.530 + private MethodSymbol findMethod(ClassSymbol tsym, Name methodName, List<Type> paramTypes) {
1.531 + return searchMethod(tsym, methodName, paramTypes, new HashSet<ClassSymbol>());
1.532 + }
1.533 +
1.534 + /** @see com.sun.tools.javadoc.ClassDocImpl#searchMethod */
1.535 + private MethodSymbol searchMethod(ClassSymbol tsym, Name methodName,
1.536 + List<Type> paramTypes, Set<ClassSymbol> searched) {
1.537 + //### Note that this search is not necessarily what the compiler would do!
1.538 +
1.539 + // do not match constructors
1.540 + if (methodName == names.init)
1.541 + return null;
1.542 +
1.543 + if (searched.contains(tsym))
1.544 + return null;
1.545 + searched.add(tsym);
1.546 +
1.547 + // search current class
1.548 + com.sun.tools.javac.code.Scope.Entry e = tsym.members().lookup(methodName);
1.549 +
1.550 + //### Using modifier filter here isn't really correct,
1.551 + //### but emulates the old behavior. Instead, we should
1.552 + //### apply the normal rules of visibility and inheritance.
1.553 +
1.554 + if (paramTypes == null) {
1.555 + // If no parameters specified, we are allowed to return
1.556 + // any method with a matching name. In practice, the old
1.557 + // code returned the first method, which is now the last!
1.558 + // In order to provide textually identical results, we
1.559 + // attempt to emulate the old behavior.
1.560 + MethodSymbol lastFound = null;
1.561 + for (; e.scope != null; e = e.next()) {
1.562 + if (e.sym.kind == Kinds.MTH) {
1.563 + if (e.sym.name == methodName) {
1.564 + lastFound = (MethodSymbol)e.sym;
1.565 + }
1.566 + }
1.567 + }
1.568 + if (lastFound != null) {
1.569 + return lastFound;
1.570 + }
1.571 + } else {
1.572 + for (; e.scope != null; e = e.next()) {
1.573 + if (e.sym != null &&
1.574 + e.sym.kind == Kinds.MTH) {
1.575 + if (hasParameterTypes((MethodSymbol) e.sym, paramTypes)) {
1.576 + return (MethodSymbol) e.sym;
1.577 + }
1.578 + }
1.579 + }
1.580 + }
1.581 +
1.582 + //### If we found a MethodSymbol above, but which did not pass
1.583 + //### the modifier filter, we should return failure here!
1.584 +
1.585 + // search superclass
1.586 + Type superclass = tsym.getSuperclass();
1.587 + if (superclass.tsym != null) {
1.588 + MethodSymbol msym = searchMethod((ClassSymbol) superclass.tsym, methodName, paramTypes, searched);
1.589 + if (msym != null) {
1.590 + return msym;
1.591 + }
1.592 + }
1.593 +
1.594 + // search interfaces
1.595 + List<Type> intfs = tsym.getInterfaces();
1.596 + for (List<Type> l = intfs; l.nonEmpty(); l = l.tail) {
1.597 + Type intf = l.head;
1.598 + if (intf.isErroneous()) continue;
1.599 + MethodSymbol msym = searchMethod((ClassSymbol) intf.tsym, methodName, paramTypes, searched);
1.600 + if (msym != null) {
1.601 + return msym;
1.602 + }
1.603 + }
1.604 +
1.605 + // search enclosing class
1.606 + ClassSymbol encl = tsym.owner.enclClass();
1.607 + if (encl != null) {
1.608 + MethodSymbol msym = searchMethod(encl, methodName, paramTypes, searched);
1.609 + if (msym != null) {
1.610 + return msym;
1.611 + }
1.612 + }
1.613 +
1.614 + return null;
1.615 + }
1.616 +
1.617 + /** @see com.sun.tools.javadoc.ClassDocImpl */
1.618 + private boolean hasParameterTypes(MethodSymbol method, List<Type> paramTypes) {
1.619 + if (paramTypes == null)
1.620 + return true;
1.621 +
1.622 + if (method.params().size() != paramTypes.size())
1.623 + return false;
1.624 +
1.625 + List<Type> methodParamTypes = types.erasureRecursive(method.asType()).getParameterTypes();
1.626 +
1.627 + return (Type.isErroneous(paramTypes))
1.628 + ? fuzzyMatch(paramTypes, methodParamTypes)
1.629 + : types.isSameTypes(paramTypes, methodParamTypes);
1.630 + }
1.631 +
1.632 + boolean fuzzyMatch(List<Type> paramTypes, List<Type> methodParamTypes) {
1.633 + List<Type> l1 = paramTypes;
1.634 + List<Type> l2 = methodParamTypes;
1.635 + while (l1.nonEmpty()) {
1.636 + if (!fuzzyMatch(l1.head, l2.head))
1.637 + return false;
1.638 + l1 = l1.tail;
1.639 + l2 = l2.tail;
1.640 + }
1.641 + return true;
1.642 + }
1.643 +
1.644 + boolean fuzzyMatch(Type paramType, Type methodParamType) {
1.645 + Boolean b = fuzzyMatcher.visit(paramType, methodParamType);
1.646 + return (b == Boolean.TRUE);
1.647 + }
1.648 +
1.649 + TypeRelation fuzzyMatcher = new TypeRelation() {
1.650 + @Override
1.651 + public Boolean visitType(Type t, Type s) {
1.652 + if (t == s)
1.653 + return true;
1.654 +
1.655 + if (s.isPartial())
1.656 + return visit(s, t);
1.657 +
1.658 + switch (t.getTag()) {
1.659 + case BYTE: case CHAR: case SHORT: case INT: case LONG: case FLOAT:
1.660 + case DOUBLE: case BOOLEAN: case VOID: case BOT: case NONE:
1.661 + return t.hasTag(s.getTag());
1.662 + default:
1.663 + throw new AssertionError("fuzzyMatcher " + t.getTag());
1.664 + }
1.665 + }
1.666 +
1.667 + @Override
1.668 + public Boolean visitArrayType(ArrayType t, Type s) {
1.669 + if (t == s)
1.670 + return true;
1.671 +
1.672 + if (s.isPartial())
1.673 + return visit(s, t);
1.674 +
1.675 + return s.hasTag(ARRAY)
1.676 + && visit(t.elemtype, types.elemtype(s));
1.677 + }
1.678 +
1.679 + @Override
1.680 + public Boolean visitClassType(ClassType t, Type s) {
1.681 + if (t == s)
1.682 + return true;
1.683 +
1.684 + if (s.isPartial())
1.685 + return visit(s, t);
1.686 +
1.687 + return t.tsym == s.tsym;
1.688 + }
1.689 +
1.690 + @Override
1.691 + public Boolean visitErrorType(ErrorType t, Type s) {
1.692 + return s.hasTag(CLASS)
1.693 + && t.tsym.name == ((ClassType) s).tsym.name;
1.694 + }
1.695 + };
1.696 +
1.697 + public TypeMirror getTypeMirror(TreePath path) {
1.698 + Tree t = path.getLeaf();
1.699 + return ((JCTree)t).type;
1.700 + }
1.701 +
1.702 + public JavacScope getScope(TreePath path) {
1.703 + return new JavacScope(getAttrContext(path));
1.704 + }
1.705 +
1.706 + public String getDocComment(TreePath path) {
1.707 + CompilationUnitTree t = path.getCompilationUnit();
1.708 + Tree leaf = path.getLeaf();
1.709 + if (t instanceof JCTree.JCCompilationUnit && leaf instanceof JCTree) {
1.710 + JCCompilationUnit cu = (JCCompilationUnit) t;
1.711 + if (cu.docComments != null) {
1.712 + return cu.docComments.getCommentText((JCTree) leaf);
1.713 + }
1.714 + }
1.715 + return null;
1.716 + }
1.717 +
1.718 + public DocCommentTree getDocCommentTree(TreePath path) {
1.719 + CompilationUnitTree t = path.getCompilationUnit();
1.720 + Tree leaf = path.getLeaf();
1.721 + if (t instanceof JCTree.JCCompilationUnit && leaf instanceof JCTree) {
1.722 + JCCompilationUnit cu = (JCCompilationUnit) t;
1.723 + if (cu.docComments != null) {
1.724 + return cu.docComments.getCommentTree((JCTree) leaf);
1.725 + }
1.726 + }
1.727 + return null;
1.728 + }
1.729 +
1.730 + public boolean isAccessible(Scope scope, TypeElement type) {
1.731 + if (scope instanceof JavacScope && type instanceof ClassSymbol) {
1.732 + Env<AttrContext> env = ((JavacScope) scope).env;
1.733 + return resolve.isAccessible(env, (ClassSymbol)type, true);
1.734 + } else
1.735 + return false;
1.736 + }
1.737 +
1.738 + public boolean isAccessible(Scope scope, Element member, DeclaredType type) {
1.739 + if (scope instanceof JavacScope
1.740 + && member instanceof Symbol
1.741 + && type instanceof com.sun.tools.javac.code.Type) {
1.742 + Env<AttrContext> env = ((JavacScope) scope).env;
1.743 + return resolve.isAccessible(env, (com.sun.tools.javac.code.Type)type, (Symbol)member, true);
1.744 + } else
1.745 + return false;
1.746 + }
1.747 +
1.748 + private Env<AttrContext> getAttrContext(TreePath path) {
1.749 + if (!(path.getLeaf() instanceof JCTree)) // implicit null-check
1.750 + throw new IllegalArgumentException();
1.751 +
1.752 + // if we're being invoked from a Tree API client via parse/enter/analyze,
1.753 + // we need to make sure all the classes have been entered;
1.754 + // if we're being invoked from JSR 199 or JSR 269, then the classes
1.755 + // will already have been entered.
1.756 + if (javacTaskImpl != null) {
1.757 + try {
1.758 + javacTaskImpl.enter(null);
1.759 + } catch (IOException e) {
1.760 + throw new Error("unexpected error while entering symbols: " + e);
1.761 + }
1.762 + }
1.763 +
1.764 +
1.765 + JCCompilationUnit unit = (JCCompilationUnit) path.getCompilationUnit();
1.766 + Copier copier = createCopier(treeMaker.forToplevel(unit));
1.767 +
1.768 + Env<AttrContext> env = null;
1.769 + JCMethodDecl method = null;
1.770 + JCVariableDecl field = null;
1.771 +
1.772 + List<Tree> l = List.nil();
1.773 + TreePath p = path;
1.774 + while (p != null) {
1.775 + l = l.prepend(p.getLeaf());
1.776 + p = p.getParentPath();
1.777 + }
1.778 +
1.779 + for ( ; l.nonEmpty(); l = l.tail) {
1.780 + Tree tree = l.head;
1.781 + switch (tree.getKind()) {
1.782 + case COMPILATION_UNIT:
1.783 +// System.err.println("COMP: " + ((JCCompilationUnit)tree).sourcefile);
1.784 + env = enter.getTopLevelEnv((JCCompilationUnit)tree);
1.785 + break;
1.786 + case ANNOTATION_TYPE:
1.787 + case CLASS:
1.788 + case ENUM:
1.789 + case INTERFACE:
1.790 +// System.err.println("CLASS: " + ((JCClassDecl)tree).sym.getSimpleName());
1.791 + env = enter.getClassEnv(((JCClassDecl)tree).sym);
1.792 + break;
1.793 + case METHOD:
1.794 +// System.err.println("METHOD: " + ((JCMethodDecl)tree).sym.getSimpleName());
1.795 + method = (JCMethodDecl)tree;
1.796 + env = memberEnter.getMethodEnv(method, env);
1.797 + break;
1.798 + case VARIABLE:
1.799 +// System.err.println("FIELD: " + ((JCVariableDecl)tree).sym.getSimpleName());
1.800 + field = (JCVariableDecl)tree;
1.801 + break;
1.802 + case BLOCK: {
1.803 +// System.err.println("BLOCK: ");
1.804 + if (method != null) {
1.805 + try {
1.806 + Assert.check(method.body == tree);
1.807 + method.body = copier.copy((JCBlock)tree, (JCTree) path.getLeaf());
1.808 + env = attribStatToTree(method.body, env, copier.leafCopy);
1.809 + } finally {
1.810 + method.body = (JCBlock) tree;
1.811 + }
1.812 + } else {
1.813 + JCBlock body = copier.copy((JCBlock)tree, (JCTree) path.getLeaf());
1.814 + env = attribStatToTree(body, env, copier.leafCopy);
1.815 + }
1.816 + return env;
1.817 + }
1.818 + default:
1.819 +// System.err.println("DEFAULT: " + tree.getKind());
1.820 + if (field != null && field.getInitializer() == tree) {
1.821 + env = memberEnter.getInitEnv(field, env);
1.822 + JCExpression expr = copier.copy((JCExpression)tree, (JCTree) path.getLeaf());
1.823 + env = attribExprToTree(expr, env, copier.leafCopy);
1.824 + return env;
1.825 + }
1.826 + }
1.827 + }
1.828 + return (field != null) ? memberEnter.getInitEnv(field, env) : env;
1.829 + }
1.830 +
1.831 + private Env<AttrContext> attribStatToTree(JCTree stat, Env<AttrContext>env, JCTree tree) {
1.832 + JavaFileObject prev = log.useSource(env.toplevel.sourcefile);
1.833 + try {
1.834 + return attr.attribStatToTree(stat, env, tree);
1.835 + } finally {
1.836 + log.useSource(prev);
1.837 + }
1.838 + }
1.839 +
1.840 + private Env<AttrContext> attribExprToTree(JCExpression expr, Env<AttrContext>env, JCTree tree) {
1.841 + JavaFileObject prev = log.useSource(env.toplevel.sourcefile);
1.842 + try {
1.843 + return attr.attribExprToTree(expr, env, tree);
1.844 + } finally {
1.845 + log.useSource(prev);
1.846 + }
1.847 + }
1.848 +
1.849 + /**
1.850 + * Makes a copy of a tree, noting the value resulting from copying a particular leaf.
1.851 + **/
1.852 + protected static class Copier extends TreeCopier<JCTree> {
1.853 + JCTree leafCopy = null;
1.854 +
1.855 + protected Copier(TreeMaker M) {
1.856 + super(M);
1.857 + }
1.858 +
1.859 + @Override
1.860 + public <T extends JCTree> T copy(T t, JCTree leaf) {
1.861 + T t2 = super.copy(t, leaf);
1.862 + if (t == leaf)
1.863 + leafCopy = t2;
1.864 + return t2;
1.865 + }
1.866 + }
1.867 +
1.868 + protected Copier createCopier(TreeMaker maker) {
1.869 + return new Copier(maker);
1.870 + }
1.871 +
1.872 + /**
1.873 + * Gets the original type from the ErrorType object.
1.874 + * @param errorType The errorType for which we want to get the original type.
1.875 + * @returns TypeMirror corresponding to the original type, replaced by the ErrorType.
1.876 + * noType (type.tag == NONE) is returned if there is no original type.
1.877 + */
1.878 + public TypeMirror getOriginalType(javax.lang.model.type.ErrorType errorType) {
1.879 + if (errorType instanceof com.sun.tools.javac.code.Type.ErrorType) {
1.880 + return ((com.sun.tools.javac.code.Type.ErrorType)errorType).getOriginalType();
1.881 + }
1.882 +
1.883 + return com.sun.tools.javac.code.Type.noType;
1.884 + }
1.885 +
1.886 + /**
1.887 + * Prints a message of the specified kind at the location of the
1.888 + * tree within the provided compilation unit
1.889 + *
1.890 + * @param kind the kind of message
1.891 + * @param msg the message, or an empty string if none
1.892 + * @param t the tree to use as a position hint
1.893 + * @param root the compilation unit that contains tree
1.894 + */
1.895 + public void printMessage(Diagnostic.Kind kind, CharSequence msg,
1.896 + com.sun.source.tree.Tree t,
1.897 + com.sun.source.tree.CompilationUnitTree root) {
1.898 + printMessage(kind, msg, ((JCTree) t).pos(), root);
1.899 + }
1.900 +
1.901 + public void printMessage(Diagnostic.Kind kind, CharSequence msg,
1.902 + com.sun.source.doctree.DocTree t,
1.903 + com.sun.source.doctree.DocCommentTree c,
1.904 + com.sun.source.tree.CompilationUnitTree root) {
1.905 + printMessage(kind, msg, ((DCTree) t).pos((DCDocComment) c), root);
1.906 + }
1.907 +
1.908 + private void printMessage(Diagnostic.Kind kind, CharSequence msg,
1.909 + JCDiagnostic.DiagnosticPosition pos,
1.910 + com.sun.source.tree.CompilationUnitTree root) {
1.911 + JavaFileObject oldSource = null;
1.912 + JavaFileObject newSource = null;
1.913 +
1.914 + newSource = root.getSourceFile();
1.915 + if (newSource == null) {
1.916 + pos = null;
1.917 + } else {
1.918 + oldSource = log.useSource(newSource);
1.919 + }
1.920 +
1.921 + try {
1.922 + switch (kind) {
1.923 + case ERROR:
1.924 + boolean prev = log.multipleErrors;
1.925 + try {
1.926 + log.error(pos, "proc.messager", msg.toString());
1.927 + } finally {
1.928 + log.multipleErrors = prev;
1.929 + }
1.930 + break;
1.931 +
1.932 + case WARNING:
1.933 + log.warning(pos, "proc.messager", msg.toString());
1.934 + break;
1.935 +
1.936 + case MANDATORY_WARNING:
1.937 + log.mandatoryWarning(pos, "proc.messager", msg.toString());
1.938 + break;
1.939 +
1.940 + default:
1.941 + log.note(pos, "proc.messager", msg.toString());
1.942 + }
1.943 + } finally {
1.944 + if (oldSource != null)
1.945 + log.useSource(oldSource);
1.946 + }
1.947 + }
1.948 +
1.949 + @Override
1.950 + public TypeMirror getLub(CatchTree tree) {
1.951 + JCCatch ct = (JCCatch) tree;
1.952 + JCVariableDecl v = ct.param;
1.953 + if (v.type != null && v.type.getKind() == TypeKind.UNION) {
1.954 + UnionClassType ut = (UnionClassType) v.type;
1.955 + return ut.getLub();
1.956 + } else {
1.957 + return v.type;
1.958 + }
1.959 + }
1.960 +}
