--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/jdk.compiler/share/classes/com/sun/tools/javac/api/JavacTrees.java Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,1225 @@
+/*
+ * Copyright (c) 2005, 2017, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package com.sun.tools.javac.api;
+
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.text.BreakIterator;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import javax.annotation.processing.ProcessingEnvironment;
+import javax.lang.model.element.AnnotationMirror;
+import javax.lang.model.element.AnnotationValue;
+import javax.lang.model.element.Element;
+import javax.lang.model.element.ElementKind;
+import javax.lang.model.element.ExecutableElement;
+import javax.lang.model.element.Modifier;
+import javax.lang.model.element.NestingKind;
+import javax.lang.model.element.PackageElement;
+import javax.lang.model.element.TypeElement;
+import javax.lang.model.type.DeclaredType;
+import javax.lang.model.type.TypeKind;
+import javax.lang.model.type.TypeMirror;
+import javax.tools.Diagnostic;
+import javax.tools.FileObject;
+import javax.tools.ForwardingFileObject;
+import javax.tools.JavaCompiler;
+import javax.tools.JavaFileManager;
+import javax.tools.JavaFileObject;
+import javax.tools.JavaFileObject.Kind;
+import javax.tools.StandardLocation;
+
+import com.sun.source.doctree.DocCommentTree;
+import com.sun.source.doctree.DocTree;
+import com.sun.source.tree.CatchTree;
+import com.sun.source.tree.CompilationUnitTree;
+import com.sun.source.tree.Scope;
+import com.sun.source.tree.Tree;
+import com.sun.source.util.DocSourcePositions;
+import com.sun.source.util.DocTreePath;
+import com.sun.source.util.DocTreeScanner;
+import com.sun.source.util.DocTrees;
+import com.sun.source.util.JavacTask;
+import com.sun.source.util.TreePath;
+import com.sun.tools.javac.code.Flags;
+import com.sun.tools.javac.code.Scope.NamedImportScope;
+import com.sun.tools.javac.code.Scope.StarImportScope;
+import com.sun.tools.javac.code.Scope.WriteableScope;
+import com.sun.tools.javac.code.Symbol;
+import com.sun.tools.javac.code.Symbol.ClassSymbol;
+import com.sun.tools.javac.code.Symbol.MethodSymbol;
+import com.sun.tools.javac.code.Symbol.ModuleSymbol;
+import com.sun.tools.javac.code.Symbol.PackageSymbol;
+import com.sun.tools.javac.code.Symbol.TypeSymbol;
+import com.sun.tools.javac.code.Symbol.VarSymbol;
+import com.sun.tools.javac.code.Symtab;
+import com.sun.tools.javac.code.Type;
+import com.sun.tools.javac.code.Type.ArrayType;
+import com.sun.tools.javac.code.Type.ClassType;
+import com.sun.tools.javac.code.Type.ErrorType;
+import com.sun.tools.javac.code.Type.UnionClassType;
+import com.sun.tools.javac.code.Types;
+import com.sun.tools.javac.code.Types.TypeRelation;
+import com.sun.tools.javac.comp.Attr;
+import com.sun.tools.javac.comp.AttrContext;
+import com.sun.tools.javac.comp.Enter;
+import com.sun.tools.javac.comp.Env;
+import com.sun.tools.javac.comp.MemberEnter;
+import com.sun.tools.javac.comp.Modules;
+import com.sun.tools.javac.comp.Resolve;
+import com.sun.tools.javac.file.BaseFileManager;
+import com.sun.tools.javac.model.JavacElements;
+import com.sun.tools.javac.parser.DocCommentParser;
+import com.sun.tools.javac.parser.ParserFactory;
+import com.sun.tools.javac.parser.Tokens.Comment;
+import com.sun.tools.javac.parser.Tokens.Comment.CommentStyle;
+import com.sun.tools.javac.processing.JavacProcessingEnvironment;
+import com.sun.tools.javac.resources.CompilerProperties.Errors;
+import com.sun.tools.javac.resources.CompilerProperties.Notes;
+import com.sun.tools.javac.resources.CompilerProperties.Warnings;
+import com.sun.tools.javac.tree.DCTree;
+import com.sun.tools.javac.tree.DCTree.DCBlockTag;
+import com.sun.tools.javac.tree.DCTree.DCDocComment;
+import com.sun.tools.javac.tree.DCTree.DCEndPosTree;
+import com.sun.tools.javac.tree.DCTree.DCErroneous;
+import com.sun.tools.javac.tree.DCTree.DCIdentifier;
+import com.sun.tools.javac.tree.DCTree.DCParam;
+import com.sun.tools.javac.tree.DCTree.DCReference;
+import com.sun.tools.javac.tree.DCTree.DCText;
+import com.sun.tools.javac.tree.DocCommentTable;
+import com.sun.tools.javac.tree.DocTreeMaker;
+import com.sun.tools.javac.tree.EndPosTable;
+import com.sun.tools.javac.tree.JCTree;
+import com.sun.tools.javac.tree.JCTree.JCBlock;
+import com.sun.tools.javac.tree.JCTree.JCCatch;
+import com.sun.tools.javac.tree.JCTree.JCClassDecl;
+import com.sun.tools.javac.tree.JCTree.JCCompilationUnit;
+import com.sun.tools.javac.tree.JCTree.JCExpression;
+import com.sun.tools.javac.tree.JCTree.JCIdent;
+import com.sun.tools.javac.tree.JCTree.JCMethodDecl;
+import com.sun.tools.javac.tree.JCTree.JCVariableDecl;
+import com.sun.tools.javac.tree.TreeCopier;
+import com.sun.tools.javac.tree.TreeInfo;
+import com.sun.tools.javac.tree.TreeMaker;
+import com.sun.tools.javac.util.Abort;
+import com.sun.tools.javac.util.Assert;
+import com.sun.tools.javac.util.Context;
+import com.sun.tools.javac.util.DefinedBy;
+import com.sun.tools.javac.util.DefinedBy.Api;
+import com.sun.tools.javac.util.DiagnosticSource;
+import com.sun.tools.javac.util.JCDiagnostic;
+import com.sun.tools.javac.util.JCDiagnostic.DiagnosticFlag;
+import com.sun.tools.javac.util.List;
+import com.sun.tools.javac.util.ListBuffer;
+import com.sun.tools.javac.util.Log;
+import com.sun.tools.javac.util.Name;
+import com.sun.tools.javac.util.Names;
+import com.sun.tools.javac.util.Pair;
+import com.sun.tools.javac.util.Position;
+
+import static com.sun.tools.javac.code.Kinds.Kind.*;
+import static com.sun.tools.javac.code.TypeTag.*;
+
+/**
+ * Provides an implementation of Trees.
+ *
+ * <p><b>This is NOT part of any supported API.
+ * If you write code that depends on this, you do so at your own
+ * risk. This code and its internal interfaces are subject to change
+ * or deletion without notice.</b></p>
+ *
+ * @author Peter von der Ahé
+ */
+public class JavacTrees extends DocTrees {
+
+ // in a world of a single context per compilation, these would all be final
+ private Modules modules;
+ private Resolve resolve;
+ private Enter enter;
+ private Log log;
+ private MemberEnter memberEnter;
+ private Attr attr;
+ private TreeMaker treeMaker;
+ private JavacElements elements;
+ private JavacTaskImpl javacTaskImpl;
+ private Names names;
+ private Types types;
+ private DocTreeMaker docTreeMaker;
+ private BreakIterator breakIterator;
+ private JavaFileManager fileManager;
+ private ParserFactory parser;
+ private Symtab syms;
+
+ // called reflectively from Trees.instance(CompilationTask task)
+ public static JavacTrees instance(JavaCompiler.CompilationTask task) {
+ if (!(task instanceof BasicJavacTask))
+ throw new IllegalArgumentException();
+ return instance(((BasicJavacTask)task).getContext());
+ }
+
+ // called reflectively from Trees.instance(ProcessingEnvironment env)
+ public static JavacTrees instance(ProcessingEnvironment env) {
+ if (!(env instanceof JavacProcessingEnvironment))
+ throw new IllegalArgumentException();
+ return instance(((JavacProcessingEnvironment)env).getContext());
+ }
+
+ public static JavacTrees instance(Context context) {
+ JavacTrees instance = context.get(JavacTrees.class);
+ if (instance == null)
+ instance = new JavacTrees(context);
+ return instance;
+ }
+
+ protected JavacTrees(Context context) {
+ this.breakIterator = null;
+ context.put(JavacTrees.class, this);
+ init(context);
+ }
+
+ public void updateContext(Context context) {
+ init(context);
+ }
+
+ private void init(Context context) {
+ modules = Modules.instance(context);
+ attr = Attr.instance(context);
+ enter = Enter.instance(context);
+ elements = JavacElements.instance(context);
+ log = Log.instance(context);
+ resolve = Resolve.instance(context);
+ treeMaker = TreeMaker.instance(context);
+ memberEnter = MemberEnter.instance(context);
+ names = Names.instance(context);
+ types = Types.instance(context);
+ docTreeMaker = DocTreeMaker.instance(context);
+ parser = ParserFactory.instance(context);
+ syms = Symtab.instance(context);
+ fileManager = context.get(JavaFileManager.class);
+ JavacTask t = context.get(JavacTask.class);
+ if (t instanceof JavacTaskImpl)
+ javacTaskImpl = (JavacTaskImpl) t;
+ }
+
+ @Override @DefinedBy(Api.COMPILER_TREE)
+ public BreakIterator getBreakIterator() {
+ return breakIterator;
+ }
+
+ @Override @DefinedBy(Api.COMPILER_TREE)
+ public DocSourcePositions getSourcePositions() {
+ return new DocSourcePositions() {
+ @Override @DefinedBy(Api.COMPILER_TREE)
+ public long getStartPosition(CompilationUnitTree file, Tree tree) {
+ return TreeInfo.getStartPos((JCTree) tree);
+ }
+
+ @Override @DefinedBy(Api.COMPILER_TREE)
+ public long getEndPosition(CompilationUnitTree file, Tree tree) {
+ EndPosTable endPosTable = ((JCCompilationUnit) file).endPositions;
+ return TreeInfo.getEndPos((JCTree) tree, endPosTable);
+ }
+
+ @Override @DefinedBy(Api.COMPILER_TREE)
+ public long getStartPosition(CompilationUnitTree file, DocCommentTree comment, DocTree tree) {
+ return ((DCTree) tree).getSourcePosition((DCDocComment) comment);
+ }
+ @Override @DefinedBy(Api.COMPILER_TREE) @SuppressWarnings("fallthrough")
+ public long getEndPosition(CompilationUnitTree file, DocCommentTree comment, DocTree tree) {
+ DCDocComment dcComment = (DCDocComment) comment;
+ if (tree instanceof DCEndPosTree) {
+ int endPos = ((DCEndPosTree) tree).getEndPos(dcComment);
+
+ if (endPos != Position.NOPOS) {
+ return endPos;
+ }
+ }
+ int correction = 0;
+ switch (tree.getKind()) {
+ case TEXT:
+ DCText text = (DCText) tree;
+
+ return dcComment.comment.getSourcePos(text.pos + text.text.length());
+ case ERRONEOUS:
+ DCErroneous err = (DCErroneous) tree;
+
+ return dcComment.comment.getSourcePos(err.pos + err.body.length());
+ case IDENTIFIER:
+ DCIdentifier ident = (DCIdentifier) tree;
+
+ return dcComment.comment.getSourcePos(ident.pos + (ident.name != names.error ? ident.name.length() : 0));
+ case PARAM:
+ DCParam param = (DCParam) tree;
+
+ if (param.isTypeParameter && param.getDescription().isEmpty()) {
+ correction = 1;
+ }
+ case AUTHOR: case DEPRECATED: case RETURN: case SEE:
+ case SERIAL: case SERIAL_DATA: case SERIAL_FIELD: case SINCE:
+ case THROWS: case UNKNOWN_BLOCK_TAG: case VERSION: {
+ DocTree last = getLastChild(tree);
+
+ if (last != null) {
+ return getEndPosition(file, comment, last) + correction;
+ }
+
+ DCBlockTag block = (DCBlockTag) tree;
+
+ return dcComment.comment.getSourcePos(block.pos + block.getTagName().length() + 1);
+ }
+ default:
+ DocTree last = getLastChild(tree);
+
+ if (last != null) {
+ return getEndPosition(file, comment, last);
+ }
+ break;
+ }
+
+ return Position.NOPOS;
+ }
+ };
+ }
+
+ @Override @DefinedBy(Api.COMPILER_TREE)
+ public DocTreeMaker getDocTreeFactory() {
+ return docTreeMaker;
+ }
+
+ private DocTree getLastChild(DocTree tree) {
+ final DocTree[] last = new DocTree[] {null};
+
+ tree.accept(new DocTreeScanner<Void, Void>() {
+ @Override @DefinedBy(Api.COMPILER_TREE)
+ public Void scan(DocTree node, Void p) {
+ if (node != null) last[0] = node;
+ return null;
+ }
+ }, null);
+
+ return last[0];
+ }
+
+ @Override @DefinedBy(Api.COMPILER_TREE)
+ public JCClassDecl getTree(TypeElement element) {
+ return (JCClassDecl) getTree((Element) element);
+ }
+
+ @Override @DefinedBy(Api.COMPILER_TREE)
+ public JCMethodDecl getTree(ExecutableElement method) {
+ return (JCMethodDecl) getTree((Element) method);
+ }
+
+ @Override @DefinedBy(Api.COMPILER_TREE)
+ public JCTree getTree(Element element) {
+ return getTree(element, null);
+ }
+
+ @Override @DefinedBy(Api.COMPILER_TREE)
+ public JCTree getTree(Element e, AnnotationMirror a) {
+ return getTree(e, a, null);
+ }
+
+ @Override @DefinedBy(Api.COMPILER_TREE)
+ public JCTree getTree(Element e, AnnotationMirror a, AnnotationValue v) {
+ Pair<JCTree, JCCompilationUnit> treeTopLevel = elements.getTreeAndTopLevel(e, a, v);
+ if (treeTopLevel == null)
+ return null;
+ return treeTopLevel.fst;
+ }
+
+ @Override @DefinedBy(Api.COMPILER_TREE)
+ public TreePath getPath(CompilationUnitTree unit, Tree node) {
+ return TreePath.getPath(unit, node);
+ }
+
+ @Override @DefinedBy(Api.COMPILER_TREE)
+ public TreePath getPath(Element e) {
+ return getPath(e, null, null);
+ }
+
+ @Override @DefinedBy(Api.COMPILER_TREE)
+ public TreePath getPath(Element e, AnnotationMirror a) {
+ return getPath(e, a, null);
+ }
+
+ @Override @DefinedBy(Api.COMPILER_TREE)
+ public TreePath getPath(Element e, AnnotationMirror a, AnnotationValue v) {
+ final Pair<JCTree, JCCompilationUnit> treeTopLevel = elements.getTreeAndTopLevel(e, a, v);
+ if (treeTopLevel == null)
+ return null;
+ return TreePath.getPath(treeTopLevel.snd, treeTopLevel.fst);
+ }
+
+ @Override @DefinedBy(Api.COMPILER_TREE)
+ public Symbol getElement(TreePath path) {
+ JCTree tree = (JCTree) path.getLeaf();
+ Symbol sym = TreeInfo.symbolFor(tree);
+ if (sym == null) {
+ for (TreePath p = path; p != null; p = p.getParentPath()) {
+ JCTree t = (JCTree) p.getLeaf();
+ if (t.hasTag(JCTree.Tag.CLASSDEF)) {
+ JCClassDecl ct = (JCClassDecl) t;
+ if (ct.sym != null) {
+ if ((ct.sym.flags_field & Flags.UNATTRIBUTED) != 0) {
+ attr.attribClass(ct.pos(), ct.sym);
+ sym = TreeInfo.symbolFor(tree);
+ }
+ break;
+ }
+ }
+ }
+ }
+ return sym;
+ }
+
+ @Override @DefinedBy(Api.COMPILER_TREE)
+ public Element getElement(DocTreePath path) {
+ DocTree forTree = path.getLeaf();
+ if (forTree instanceof DCReference)
+ return attributeDocReference(path.getTreePath(), ((DCReference) forTree));
+ if (forTree instanceof DCIdentifier) {
+ if (path.getParentPath().getLeaf() instanceof DCParam) {
+ return attributeParamIdentifier(path.getTreePath(), (DCParam) path.getParentPath().getLeaf());
+ }
+ }
+ return null;
+ }
+
+ @Override @DefinedBy(Api.COMPILER_TREE)
+ public java.util.List<DocTree> getFirstSentence(java.util.List<? extends DocTree> list) {
+ return docTreeMaker.getFirstSentence(list);
+ }
+
+ private Symbol attributeDocReference(TreePath path, DCReference ref) {
+ Env<AttrContext> env = getAttrContext(path);
+ if (env == null) return null;
+
+ Log.DeferredDiagnosticHandler deferredDiagnosticHandler =
+ new Log.DeferredDiagnosticHandler(log);
+ try {
+ final TypeSymbol tsym;
+ final Name memberName;
+ if (ref.qualifierExpression == null) {
+ tsym = env.enclClass.sym;
+ memberName = (Name) ref.memberName;
+ } else {
+ // newSeeTree if the qualifierExpression is a type or package name.
+ // javac does not provide the exact method required, so
+ // we first check if qualifierExpression identifies a type,
+ // and if not, then we check to see if it identifies a package.
+ Type t = attr.attribType(ref.qualifierExpression, env);
+ if (t.isErroneous()) {
+ JCCompilationUnit toplevel =
+ treeMaker.TopLevel(List.nil());
+ final ModuleSymbol msym = modules.getDefaultModule();
+ toplevel.modle = msym;
+ toplevel.packge = msym.unnamedPackage;
+ Symbol sym = attr.attribIdent(ref.qualifierExpression, toplevel);
+
+ sym.complete();
+
+ if ((sym.kind == PCK || sym.kind == TYP) && sym.exists()) {
+ tsym = (TypeSymbol) sym;
+ memberName = (Name) ref.memberName;
+ if (sym.kind == PCK && memberName != null) {
+ //cannot refer to a package "member"
+ return null;
+ }
+ } else {
+ if (ref.qualifierExpression.hasTag(JCTree.Tag.IDENT)) {
+ // fixup: allow "identifier" instead of "#identifier"
+ // for compatibility with javadoc
+ tsym = env.enclClass.sym;
+ memberName = ((JCIdent) ref.qualifierExpression).name;
+ } else {
+ return null;
+ }
+ }
+ } else {
+ tsym = t.tsym;
+ memberName = (Name) ref.memberName;
+ }
+ }
+
+ if (memberName == null)
+ return tsym;
+
+ final List<Type> paramTypes;
+ if (ref.paramTypes == null)
+ paramTypes = null;
+ else {
+ ListBuffer<Type> lb = new ListBuffer<>();
+ for (List<JCTree> l = (List<JCTree>) ref.paramTypes; l.nonEmpty(); l = l.tail) {
+ JCTree tree = l.head;
+ Type t = attr.attribType(tree, env);
+ lb.add(t);
+ }
+ paramTypes = lb.toList();
+ }
+
+ ClassSymbol sym = (ClassSymbol) types.skipTypeVars(tsym.type, false).tsym;
+
+ Symbol msym = (memberName == sym.name)
+ ? findConstructor(sym, paramTypes)
+ : findMethod(sym, memberName, paramTypes);
+ if (paramTypes != null) {
+ // explicit (possibly empty) arg list given, so cannot be a field
+ return msym;
+ }
+
+ VarSymbol vsym = (ref.paramTypes != null) ? null : findField(sym, memberName);
+ // prefer a field over a method with no parameters
+ if (vsym != null &&
+ (msym == null ||
+ types.isSubtypeUnchecked(vsym.enclClass().asType(), msym.enclClass().asType()))) {
+ return vsym;
+ } else {
+ return msym;
+ }
+ } catch (Abort e) { // may be thrown by Check.completionError in case of bad class file
+ return null;
+ } finally {
+ log.popDiagnosticHandler(deferredDiagnosticHandler);
+ }
+ }
+
+ private Symbol attributeParamIdentifier(TreePath path, DCParam ptag) {
+ Symbol javadocSymbol = getElement(path);
+ if (javadocSymbol == null)
+ return null;
+ ElementKind kind = javadocSymbol.getKind();
+ List<? extends Symbol> params = List.nil();
+ if (kind == ElementKind.METHOD || kind == ElementKind.CONSTRUCTOR) {
+ MethodSymbol ee = (MethodSymbol) javadocSymbol;
+ params = ptag.isTypeParameter()
+ ? ee.getTypeParameters()
+ : ee.getParameters();
+ } else if (kind.isClass() || kind.isInterface()) {
+ ClassSymbol te = (ClassSymbol) javadocSymbol;
+ params = te.getTypeParameters();
+ }
+
+ for (Symbol param : params) {
+ if (param.getSimpleName() == ptag.getName().getName()) {
+ return param;
+ }
+ }
+ return null;
+ }
+
+ /** @see com.sun.tools.javadoc.ClassDocImpl#findField */
+ private VarSymbol findField(ClassSymbol tsym, Name fieldName) {
+ return searchField(tsym, fieldName, new HashSet<>());
+ }
+
+ /** @see com.sun.tools.javadoc.ClassDocImpl#searchField */
+ private VarSymbol searchField(ClassSymbol tsym, Name fieldName, Set<ClassSymbol> searched) {
+ if (searched.contains(tsym)) {
+ return null;
+ }
+ searched.add(tsym);
+
+ for (Symbol sym : tsym.members().getSymbolsByName(fieldName)) {
+ if (sym.kind == VAR) {
+ return (VarSymbol)sym;
+ }
+ }
+
+ //### If we found a VarSymbol above, but which did not pass
+ //### the modifier filter, we should return failure here!
+
+ ClassSymbol encl = tsym.owner.enclClass();
+ if (encl != null) {
+ VarSymbol vsym = searchField(encl, fieldName, searched);
+ if (vsym != null) {
+ return vsym;
+ }
+ }
+
+ // search superclass
+ Type superclass = tsym.getSuperclass();
+ if (superclass.tsym != null) {
+ VarSymbol vsym = searchField((ClassSymbol) superclass.tsym, fieldName, searched);
+ if (vsym != null) {
+ return vsym;
+ }
+ }
+
+ // search interfaces
+ List<Type> intfs = tsym.getInterfaces();
+ for (List<Type> l = intfs; l.nonEmpty(); l = l.tail) {
+ Type intf = l.head;
+ if (intf.isErroneous()) continue;
+ VarSymbol vsym = searchField((ClassSymbol) intf.tsym, fieldName, searched);
+ if (vsym != null) {
+ return vsym;
+ }
+ }
+
+ return null;
+ }
+
+ /** @see com.sun.tools.javadoc.ClassDocImpl#findConstructor */
+ MethodSymbol findConstructor(ClassSymbol tsym, List<Type> paramTypes) {
+ for (Symbol sym : tsym.members().getSymbolsByName(names.init)) {
+ if (sym.kind == MTH) {
+ if (hasParameterTypes((MethodSymbol) sym, paramTypes)) {
+ return (MethodSymbol) sym;
+ }
+ }
+ }
+ return null;
+ }
+
+ /** @see com.sun.tools.javadoc.ClassDocImpl#findMethod */
+ private MethodSymbol findMethod(ClassSymbol tsym, Name methodName, List<Type> paramTypes) {
+ return searchMethod(tsym, methodName, paramTypes, new HashSet<>());
+ }
+
+ /** @see com.sun.tools.javadoc.ClassDocImpl#searchMethod */
+ private MethodSymbol searchMethod(ClassSymbol tsym, Name methodName,
+ List<Type> paramTypes, Set<ClassSymbol> searched) {
+ //### Note that this search is not necessarily what the compiler would do!
+
+ // do not match constructors
+ if (methodName == names.init)
+ return null;
+
+ if (searched.contains(tsym))
+ return null;
+ searched.add(tsym);
+
+ // search current class
+
+ //### Using modifier filter here isn't really correct,
+ //### but emulates the old behavior. Instead, we should
+ //### apply the normal rules of visibility and inheritance.
+
+ if (paramTypes == null) {
+ // If no parameters specified, we are allowed to return
+ // any method with a matching name. In practice, the old
+ // code returned the first method, which is now the last!
+ // In order to provide textually identical results, we
+ // attempt to emulate the old behavior.
+ MethodSymbol lastFound = null;
+ for (Symbol sym : tsym.members().getSymbolsByName(methodName)) {
+ if (sym.kind == MTH) {
+ if (sym.name == methodName) {
+ lastFound = (MethodSymbol)sym;
+ }
+ }
+ }
+ if (lastFound != null) {
+ return lastFound;
+ }
+ } else {
+ for (Symbol sym : tsym.members().getSymbolsByName(methodName)) {
+ if (sym != null &&
+ sym.kind == MTH) {
+ if (hasParameterTypes((MethodSymbol) sym, paramTypes)) {
+ return (MethodSymbol) sym;
+ }
+ }
+ }
+ }
+
+ //### If we found a MethodSymbol above, but which did not pass
+ //### the modifier filter, we should return failure here!
+
+ // search superclass
+ Type superclass = tsym.getSuperclass();
+ if (superclass.tsym != null) {
+ MethodSymbol msym = searchMethod((ClassSymbol) superclass.tsym, methodName, paramTypes, searched);
+ if (msym != null) {
+ return msym;
+ }
+ }
+
+ // search interfaces
+ List<Type> intfs = tsym.getInterfaces();
+ for (List<Type> l = intfs; l.nonEmpty(); l = l.tail) {
+ Type intf = l.head;
+ if (intf.isErroneous()) continue;
+ MethodSymbol msym = searchMethod((ClassSymbol) intf.tsym, methodName, paramTypes, searched);
+ if (msym != null) {
+ return msym;
+ }
+ }
+
+ // search enclosing class
+ ClassSymbol encl = tsym.owner.enclClass();
+ if (encl != null) {
+ MethodSymbol msym = searchMethod(encl, methodName, paramTypes, searched);
+ if (msym != null) {
+ return msym;
+ }
+ }
+
+ return null;
+ }
+
+ /** @see com.sun.tools.javadoc.ClassDocImpl */
+ private boolean hasParameterTypes(MethodSymbol method, List<Type> paramTypes) {
+ if (paramTypes == null)
+ return true;
+
+ if (method.params().size() != paramTypes.size())
+ return false;
+
+ List<Type> methodParamTypes = types.erasureRecursive(method.asType()).getParameterTypes();
+
+ return (Type.isErroneous(paramTypes))
+ ? fuzzyMatch(paramTypes, methodParamTypes)
+ : types.isSameTypes(paramTypes, methodParamTypes);
+ }
+
+ boolean fuzzyMatch(List<Type> paramTypes, List<Type> methodParamTypes) {
+ List<Type> l1 = paramTypes;
+ List<Type> l2 = methodParamTypes;
+ while (l1.nonEmpty()) {
+ if (!fuzzyMatch(l1.head, l2.head))
+ return false;
+ l1 = l1.tail;
+ l2 = l2.tail;
+ }
+ return true;
+ }
+
+ boolean fuzzyMatch(Type paramType, Type methodParamType) {
+ Boolean b = fuzzyMatcher.visit(paramType, methodParamType);
+ return (b == Boolean.TRUE);
+ }
+
+ TypeRelation fuzzyMatcher = new TypeRelation() {
+ @Override
+ public Boolean visitType(Type t, Type s) {
+ if (t == s)
+ return true;
+
+ if (s.isPartial())
+ return visit(s, t);
+
+ switch (t.getTag()) {
+ case BYTE: case CHAR: case SHORT: case INT: case LONG: case FLOAT:
+ case DOUBLE: case BOOLEAN: case VOID: case BOT: case NONE:
+ return t.hasTag(s.getTag());
+ default:
+ throw new AssertionError("fuzzyMatcher " + t.getTag());
+ }
+ }
+
+ @Override
+ public Boolean visitArrayType(ArrayType t, Type s) {
+ if (t == s)
+ return true;
+
+ if (s.isPartial())
+ return visit(s, t);
+
+ return s.hasTag(ARRAY)
+ && visit(t.elemtype, types.elemtype(s));
+ }
+
+ @Override
+ public Boolean visitClassType(ClassType t, Type s) {
+ if (t == s)
+ return true;
+
+ if (s.isPartial())
+ return visit(s, t);
+
+ return t.tsym == s.tsym;
+ }
+
+ @Override
+ public Boolean visitErrorType(ErrorType t, Type s) {
+ return s.hasTag(CLASS)
+ && t.tsym.name == ((ClassType) s).tsym.name;
+ }
+ };
+
+ @Override @DefinedBy(Api.COMPILER_TREE)
+ public TypeMirror getTypeMirror(TreePath path) {
+ Tree t = path.getLeaf();
+ Type ty = ((JCTree)t).type;
+ return ty == null ? null : ty.stripMetadataIfNeeded();
+ }
+
+ @Override @DefinedBy(Api.COMPILER_TREE)
+ public JavacScope getScope(TreePath path) {
+ return JavacScope.create(getAttrContext(path));
+ }
+
+ @Override @DefinedBy(Api.COMPILER_TREE)
+ public String getDocComment(TreePath path) {
+ CompilationUnitTree t = path.getCompilationUnit();
+ Tree leaf = path.getLeaf();
+ if (t instanceof JCTree.JCCompilationUnit && leaf instanceof JCTree) {
+ JCCompilationUnit cu = (JCCompilationUnit) t;
+ if (cu.docComments != null) {
+ return cu.docComments.getCommentText((JCTree) leaf);
+ }
+ }
+ return null;
+ }
+
+ @Override @DefinedBy(Api.COMPILER_TREE)
+ public DocCommentTree getDocCommentTree(TreePath path) {
+ CompilationUnitTree t = path.getCompilationUnit();
+ Tree leaf = path.getLeaf();
+ if (t instanceof JCTree.JCCompilationUnit && leaf instanceof JCTree) {
+ JCCompilationUnit cu = (JCCompilationUnit) t;
+ if (cu.docComments != null) {
+ return cu.docComments.getCommentTree((JCTree) leaf);
+ }
+ }
+ return null;
+ }
+
+ @Override @DefinedBy(Api.COMPILER_TREE)
+ public DocCommentTree getDocCommentTree(Element e) {
+ TreePath path = getPath(e);
+ if (path == null) {
+ return null;
+ }
+ return getDocCommentTree(path);
+ }
+
+ @Override @DefinedBy(Api.COMPILER_TREE)
+ public DocCommentTree getDocCommentTree(Element e, String relativeFileName) throws IOException {
+ PackageElement pkg = elements.getPackageOf(e);
+ FileObject fileForInput = fileManager.getFileForInput(StandardLocation.SOURCE_PATH,
+ pkg.getQualifiedName().toString(), relativeFileName);
+
+ if (fileForInput == null) {
+ throw new FileNotFoundException(relativeFileName);
+ }
+ return getDocCommentTree(fileForInput);
+ }
+
+ @Override @DefinedBy(Api.COMPILER_TREE)
+ public boolean isAccessible(Scope scope, TypeElement type) {
+ if (scope instanceof JavacScope && type instanceof ClassSymbol) {
+ Env<AttrContext> env = ((JavacScope) scope).env;
+ return resolve.isAccessible(env, (ClassSymbol)type, true);
+ } else
+ return false;
+ }
+
+ @Override @DefinedBy(Api.COMPILER_TREE)
+ public boolean isAccessible(Scope scope, Element member, DeclaredType type) {
+ if (scope instanceof JavacScope
+ && member instanceof Symbol
+ && type instanceof com.sun.tools.javac.code.Type) {
+ Env<AttrContext> env = ((JavacScope) scope).env;
+ return resolve.isAccessible(env, (com.sun.tools.javac.code.Type)type, (Symbol)member, true);
+ } else
+ return false;
+ }
+
+ private Env<AttrContext> getAttrContext(TreePath path) {
+ if (!(path.getLeaf() instanceof JCTree)) // implicit null-check
+ throw new IllegalArgumentException();
+
+ // if we're being invoked from a Tree API client via parse/enter/analyze,
+ // we need to make sure all the classes have been entered;
+ // if we're being invoked from JSR 199 or JSR 269, then the classes
+ // will already have been entered.
+ if (javacTaskImpl != null) {
+ javacTaskImpl.enter(null);
+ }
+
+ JCCompilationUnit unit = (JCCompilationUnit) path.getCompilationUnit();
+ Copier copier = createCopier(treeMaker.forToplevel(unit));
+
+ Env<AttrContext> env = null;
+ JCMethodDecl method = null;
+ JCVariableDecl field = null;
+
+ List<Tree> l = List.nil();
+ TreePath p = path;
+ while (p != null) {
+ l = l.prepend(p.getLeaf());
+ p = p.getParentPath();
+ }
+
+ for ( ; l.nonEmpty(); l = l.tail) {
+ Tree tree = l.head;
+ switch (tree.getKind()) {
+ case COMPILATION_UNIT:
+// System.err.println("COMP: " + ((JCCompilationUnit)tree).sourcefile);
+ env = enter.getTopLevelEnv((JCCompilationUnit)tree);
+ break;
+ case ANNOTATION_TYPE:
+ case CLASS:
+ case ENUM:
+ case INTERFACE:
+// System.err.println("CLASS: " + ((JCClassDecl)tree).sym.getSimpleName());
+ env = enter.getClassEnv(((JCClassDecl)tree).sym);
+ if (env == null) return null;
+ break;
+ case METHOD:
+// System.err.println("METHOD: " + ((JCMethodDecl)tree).sym.getSimpleName());
+ method = (JCMethodDecl)tree;
+ env = memberEnter.getMethodEnv(method, env);
+ break;
+ case VARIABLE:
+// System.err.println("FIELD: " + ((JCVariableDecl)tree).sym.getSimpleName());
+ field = (JCVariableDecl)tree;
+ break;
+ case BLOCK: {
+// System.err.println("BLOCK: ");
+ if (method != null) {
+ try {
+ Assert.check(method.body == tree);
+ method.body = copier.copy((JCBlock)tree, (JCTree) path.getLeaf());
+ env = attribStatToTree(method.body, env, copier.leafCopy);
+ } finally {
+ method.body = (JCBlock) tree;
+ }
+ } else {
+ JCBlock body = copier.copy((JCBlock)tree, (JCTree) path.getLeaf());
+ env = attribStatToTree(body, env, copier.leafCopy);
+ }
+ return env;
+ }
+ default:
+// System.err.println("DEFAULT: " + tree.getKind());
+ if (field != null && field.getInitializer() == tree) {
+ env = memberEnter.getInitEnv(field, env);
+ JCExpression expr = copier.copy((JCExpression)tree, (JCTree) path.getLeaf());
+ env = attribExprToTree(expr, env, copier.leafCopy);
+ return env;
+ }
+ }
+ }
+ return (field != null) ? memberEnter.getInitEnv(field, env) : env;
+ }
+
+ private Env<AttrContext> attribStatToTree(JCTree stat, Env<AttrContext>env, JCTree tree) {
+ JavaFileObject prev = log.useSource(env.toplevel.sourcefile);
+ try {
+ return attr.attribStatToTree(stat, env, tree);
+ } finally {
+ log.useSource(prev);
+ }
+ }
+
+ private Env<AttrContext> attribExprToTree(JCExpression expr, Env<AttrContext>env, JCTree tree) {
+ JavaFileObject prev = log.useSource(env.toplevel.sourcefile);
+ try {
+ return attr.attribExprToTree(expr, env, tree);
+ } finally {
+ log.useSource(prev);
+ }
+ }
+
+ static JavaFileObject asJavaFileObject(FileObject fileObject) {
+ JavaFileObject jfo = null;
+
+ if (fileObject instanceof JavaFileObject) {
+ jfo = (JavaFileObject) fileObject;
+ checkHtmlKind(fileObject, Kind.HTML);
+ return jfo;
+ }
+
+ checkHtmlKind(fileObject);
+ jfo = new HtmlFileObject(fileObject);
+ return jfo;
+ }
+
+ private static void checkHtmlKind(FileObject fileObject) {
+ checkHtmlKind(fileObject, BaseFileManager.getKind(fileObject.getName()));
+ }
+
+ private static void checkHtmlKind(FileObject fileObject, JavaFileObject.Kind kind) {
+ if (kind != JavaFileObject.Kind.HTML) {
+ throw new IllegalArgumentException("HTML file expected:" + fileObject.getName());
+ }
+ }
+
+ private static class HtmlFileObject extends ForwardingFileObject<FileObject>
+ implements JavaFileObject {
+
+ public HtmlFileObject(FileObject fileObject) {
+ super(fileObject);
+ }
+
+ @Override @DefinedBy(Api.COMPILER)
+ public Kind getKind() {
+ return BaseFileManager.getKind(fileObject.getName());
+ }
+
+ @Override @DefinedBy(Api.COMPILER)
+ public boolean isNameCompatible(String simpleName, Kind kind) {
+ return false;
+ }
+
+ @Override @DefinedBy(Api.COMPILER)
+ public NestingKind getNestingKind() {
+ return null;
+ }
+
+ @Override @DefinedBy(Api.COMPILER)
+ public Modifier getAccessLevel() {
+ return null;
+ }
+ }
+
+ @Override @DefinedBy(Api.COMPILER_TREE)
+ public DocCommentTree getDocCommentTree(FileObject fileObject) {
+ JavaFileObject jfo = asJavaFileObject(fileObject);
+ DiagnosticSource diagSource = new DiagnosticSource(jfo, log);
+
+ final Comment comment = new Comment() {
+ int offset = 0;
+ @Override
+ public String getText() {
+ try {
+ CharSequence rawDoc = fileObject.getCharContent(true);
+ Pattern bodyPat =
+ Pattern.compile("(?is).*?<body\\b[^>]*>(.*)</body\\b.*");
+ Matcher m = bodyPat.matcher(rawDoc);
+ if (m.matches()) {
+ offset = m.end(1);
+ return m.group(1);
+ } else {
+ // Assume doclint will do the right thing.
+ return "";
+ }
+ } catch (IOException ignore) {
+ // do nothing
+ }
+ return "";
+ }
+
+ @Override
+ public int getSourcePos(int index) {
+ return offset + index;
+ }
+
+ @Override
+ public CommentStyle getStyle() {
+ throw new UnsupportedOperationException();
+ }
+
+ @Override
+ public boolean isDeprecated() {
+ throw new UnsupportedOperationException();
+ }
+ };
+
+ return new DocCommentParser(parser, diagSource, comment).parse();
+ }
+
+ @Override @DefinedBy(Api.COMPILER_TREE)
+ public DocTreePath getDocTreePath(FileObject fileObject, PackageElement packageElement) {
+ JavaFileObject jfo = asJavaFileObject(fileObject);
+ DocCommentTree docCommentTree = getDocCommentTree(jfo);
+ TreePath treePath = makeTreePath((PackageSymbol)packageElement, jfo, docCommentTree);
+ return new DocTreePath(treePath, docCommentTree);
+ }
+
+ @Override @DefinedBy(Api.COMPILER_TREE)
+ public void setBreakIterator(BreakIterator breakiterator) {
+ this.breakIterator = breakiterator;
+ }
+
+ /**
+ * Makes a copy of a tree, noting the value resulting from copying a particular leaf.
+ **/
+ protected static class Copier extends TreeCopier<JCTree> {
+ JCTree leafCopy = null;
+
+ protected Copier(TreeMaker M) {
+ super(M);
+ }
+
+ @Override
+ public <T extends JCTree> T copy(T t, JCTree leaf) {
+ T t2 = super.copy(t, leaf);
+ if (t == leaf)
+ leafCopy = t2;
+ return t2;
+ }
+ }
+
+ protected Copier createCopier(TreeMaker maker) {
+ return new Copier(maker);
+ }
+
+ /**
+ * Returns the original type from the ErrorType object.
+ * @param errorType The errorType for which we want to get the original type.
+ * @return TypeMirror corresponding to the original type, replaced by the ErrorType.
+ * noType (type.tag == NONE) is returned if there is no original type.
+ */
+ @Override @DefinedBy(Api.COMPILER_TREE)
+ public TypeMirror getOriginalType(javax.lang.model.type.ErrorType errorType) {
+ if (errorType instanceof com.sun.tools.javac.code.Type.ErrorType) {
+ return ((com.sun.tools.javac.code.Type.ErrorType)errorType).getOriginalType();
+ }
+
+ return com.sun.tools.javac.code.Type.noType;
+ }
+
+ /**
+ * Prints a message of the specified kind at the location of the
+ * tree within the provided compilation unit
+ *
+ * @param kind the kind of message
+ * @param msg the message, or an empty string if none
+ * @param t the tree to use as a position hint
+ * @param root the compilation unit that contains tree
+ */
+ @Override @DefinedBy(Api.COMPILER_TREE)
+ public void printMessage(Diagnostic.Kind kind, CharSequence msg,
+ com.sun.source.tree.Tree t,
+ com.sun.source.tree.CompilationUnitTree root) {
+ printMessage(kind, msg, ((JCTree) t).pos(), root);
+ }
+
+ @Override @DefinedBy(Api.COMPILER_TREE)
+ public void printMessage(Diagnostic.Kind kind, CharSequence msg,
+ com.sun.source.doctree.DocTree t,
+ com.sun.source.doctree.DocCommentTree c,
+ com.sun.source.tree.CompilationUnitTree root) {
+ printMessage(kind, msg, ((DCTree) t).pos((DCDocComment) c), root);
+ }
+
+ private void printMessage(Diagnostic.Kind kind, CharSequence msg,
+ JCDiagnostic.DiagnosticPosition pos,
+ com.sun.source.tree.CompilationUnitTree root) {
+ JavaFileObject oldSource = null;
+ JavaFileObject newSource = null;
+
+ newSource = root.getSourceFile();
+ if (newSource == null) {
+ pos = null;
+ } else {
+ oldSource = log.useSource(newSource);
+ }
+
+ try {
+ switch (kind) {
+ case ERROR:
+ log.error(DiagnosticFlag.MULTIPLE, pos, Errors.ProcMessager(msg.toString()));
+ break;
+
+ case WARNING:
+ log.warning(pos, Warnings.ProcMessager(msg.toString()));
+ break;
+
+ case MANDATORY_WARNING:
+ log.mandatoryWarning(pos, Warnings.ProcMessager(msg.toString()));
+ break;
+
+ default:
+ log.note(pos, Notes.ProcMessager(msg.toString()));
+ }
+ } finally {
+ if (oldSource != null)
+ log.useSource(oldSource);
+ }
+ }
+
+ @Override @DefinedBy(Api.COMPILER_TREE)
+ public TypeMirror getLub(CatchTree tree) {
+ JCCatch ct = (JCCatch) tree;
+ JCVariableDecl v = ct.param;
+ if (v.type != null && v.type.getKind() == TypeKind.UNION) {
+ UnionClassType ut = (UnionClassType) v.type;
+ return ut.getLub();
+ } else {
+ return v.type;
+ }
+ }
+
+ private TreePath makeTreePath(final PackageSymbol psym, final JavaFileObject jfo,
+ DocCommentTree dcTree) {
+ JCCompilationUnit jcCompilationUnit = new JCCompilationUnit(List.nil()) {
+ public int getPos() {
+ return Position.FIRSTPOS;
+ }
+
+ public JavaFileObject getSourcefile() {
+ return jfo;
+ }
+
+ @Override @DefinedBy(Api.COMPILER_TREE)
+ public Position.LineMap getLineMap() {
+ try {
+ CharSequence content = jfo.getCharContent(true);
+ String s = content.toString();
+ return Position.makeLineMap(s.toCharArray(), s.length(), true);
+ } catch (IOException ignore) {}
+ return null;
+ }
+ };
+
+ jcCompilationUnit.docComments = new DocCommentTable() {
+ @Override
+ public boolean hasComment(JCTree tree) {
+ return false;
+ }
+
+ @Override
+ public Comment getComment(JCTree tree) {
+ throw new UnsupportedOperationException();
+ }
+
+ @Override
+ public String getCommentText(JCTree tree) {
+ throw new UnsupportedOperationException();
+ }
+
+ @Override
+ public DCDocComment getCommentTree(JCTree tree) {
+ return (DCDocComment)dcTree;
+ }
+
+ @Override
+ public void putComment(JCTree tree, Comment c) {
+ throw new UnsupportedOperationException();
+ }
+
+ };
+ jcCompilationUnit.lineMap = jcCompilationUnit.getLineMap();
+ jcCompilationUnit.modle = psym.modle;
+ jcCompilationUnit.sourcefile = jfo;
+ jcCompilationUnit.namedImportScope = new NamedImportScope(psym, jcCompilationUnit.toplevelScope);
+ jcCompilationUnit.packge = psym;
+ jcCompilationUnit.starImportScope = new StarImportScope(psym);
+ jcCompilationUnit.toplevelScope = WriteableScope.create(psym);
+ return new TreePath(jcCompilationUnit);
+ }
+}