jdk8-mips64-public/langtools: comparison src/share/classes/com/sun/tools/javac/api/JavacTrees.java

--1:000000000000
+:9a66ca7c79fa
+/*
+* Copyright 2005-2006 Sun Microsystems, Inc.  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.  Sun designates this
+* particular file as subject to the "Classpath" exception as provided
+* by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+* CA 95054 USA or visit www.sun.com if you need additional information or
+* have any questions.
+*/
+package com.sun.tools.javac.api;
+import java.io.IOException;
+import java.util.Map;
+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.ExecutableElement;
+import javax.lang.model.element.TypeElement;
+import javax.lang.model.type.DeclaredType;
+import javax.lang.model.type.TypeMirror;
+import javax.tools.JavaCompiler;
+import javax.tools.JavaFileObject;
+import com.sun.source.tree.CompilationUnitTree;
+import com.sun.source.tree.Scope;
+import com.sun.source.tree.Tree;
+import com.sun.source.util.SourcePositions;
+import com.sun.source.util.TreePath;
+import com.sun.source.util.Trees;
+import com.sun.tools.javac.code.Symbol.ClassSymbol;
+import com.sun.tools.javac.code.Symbol.TypeSymbol;
+import com.sun.tools.javac.code.Symbol;
+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.Resolve;
+import com.sun.tools.javac.model.JavacElements;
+import com.sun.tools.javac.processing.JavacProcessingEnvironment;
+import com.sun.tools.javac.tree.JCTree.*;
+import com.sun.tools.javac.tree.JCTree;
+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.Context;
+import com.sun.tools.javac.util.List;
+import com.sun.tools.javac.util.Log;
+import com.sun.tools.javac.util.Pair;
+/**
+* Provides an implementation of Trees.
+*
+* <p><b>This is NOT part of any API supported by Sun Microsystems.
+* 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 Ah&eacute;
+*/
+public class JavacTrees extends Trees {
+private final Resolve resolve;
+private final Enter enter;
+private final Log log;
+private final MemberEnter memberEnter;
+private final Attr attr;
+private final TreeMaker treeMaker;
+private final JavacElements elements;
+private final JavacTaskImpl javacTaskImpl;
+public static JavacTrees instance(JavaCompiler.CompilationTask task) {
+if (!(task instanceof JavacTaskImpl))
+throw new IllegalArgumentException();
+return instance(((JavacTaskImpl)task).getContext());
+}
+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;
+}
+private JavacTrees(Context context) {
+context.put(JavacTrees.class, this);
+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);
+javacTaskImpl = context.get(JavacTaskImpl.class);
+}
+public SourcePositions getSourcePositions() {
+return new SourcePositions() {
+public long getStartPosition(CompilationUnitTree file, Tree tree) {
+return TreeInfo.getStartPos((JCTree) tree);
+}
+public long getEndPosition(CompilationUnitTree file, Tree tree) {
+Map<JCTree,Integer> endPositions = ((JCCompilationUnit) file).endPositions;
+return TreeInfo.getEndPos((JCTree) tree, endPositions);
+}
+};
+}
+public JCClassDecl getTree(TypeElement element) {
+return (JCClassDecl) getTree((Element) element);
+}
+public JCMethodDecl getTree(ExecutableElement method) {
+return (JCMethodDecl) getTree((Element) method);
+}
+public JCTree getTree(Element element) {
+Symbol symbol = (Symbol) element;
+TypeSymbol enclosing = symbol.enclClass();
+Env<AttrContext> env = enter.getEnv(enclosing);
+if (env == null)
+return null;
+JCClassDecl classNode = env.enclClass;
+if (classNode != null) {
+if (TreeInfo.symbolFor(classNode) == element)
+return classNode;
+for (JCTree node : classNode.getMembers())
+if (TreeInfo.symbolFor(node) == element)
+return node;
+}
+return null;
+}
+public JCTree getTree(Element e, AnnotationMirror a) {
+return getTree(e, a, null);
+}
+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;
+}
+public TreePath getPath(CompilationUnitTree unit, Tree node) {
+return TreePath.getPath(unit, node);
+}
+public TreePath getPath(Element e) {
+return getPath(e, null, null);
+}
+public TreePath getPath(Element e, AnnotationMirror a) {
+return getPath(e, a, null);
+}
+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);
+}
+public Element getElement(TreePath path) {
+Tree t = path.getLeaf();
+return TreeInfo.symbolFor((JCTree) t);
+}
+public TypeMirror getTypeMirror(TreePath path) {
+Tree t = path.getLeaf();
+return ((JCTree)t).type;
+}
+public JavacScope getScope(TreePath path) {
+return new JavacScope(getAttrContext(path));
+}
+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);
+} else
+return false;
+}
+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);
+} 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 via from a JSR199 client, we need to make sure
+// all the classes have been entered; if we're being invoked from JSR269,
+// then the classes will already have been entered.
+if (javacTaskImpl != null) {
+try {
+javacTaskImpl.enter(null);
+} catch (IOException e) {
+throw new Error("unexpected error while entering symbols: " + e);
+}
+}
+JCCompilationUnit unit = (JCCompilationUnit) path.getCompilationUnit();
+Copier copier = new Copier(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 CLASS:
+//                    System.err.println("CLASS: " + ((JCClassDecl)tree).sym.getSimpleName());
+env = enter.getClassEnv(((JCClassDecl)tree).sym);
+break;
+case METHOD:
+//                    System.err.println("METHOD: " + ((JCMethodDecl)tree).sym.getSimpleName());
+method = (JCMethodDecl)tree;
+break;
+case VARIABLE:
+//                    System.err.println("FIELD: " + ((JCVariableDecl)tree).sym.getSimpleName());
+field = (JCVariableDecl)tree;
+break;
+case BLOCK: {
+//                    System.err.println("BLOCK: ");
+if (method != null)
+env = memberEnter.getMethodEnv(method, env);
+JCTree body = copier.copy((JCTree)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);
+}
+}
+/**
+* Makes a copy of a tree, noting the value resulting from copying a particular leaf.
+**/
+static class Copier extends TreeCopier<JCTree> {
+JCTree leafCopy = null;
+Copier(TreeMaker M) {
+super(M);
+}
+public <T extends JCTree> T copy(T t, JCTree leaf) {
+T t2 = super.copy(t, leaf);
+if (t == leaf)
+leafCopy = t2;
+return t2;
+}
+}
+}

Mercurial > jdk8-mips64-public > langtools / file comparison

comparison: src/share/classes/com/sun/tools/javac/api/JavacTrees.java

src/share/classes/com/sun/tools/javac/api/JavacTrees.java