jdk8-mips64-public/langtools: src/share/classes/com/sun/tools/javac/code/TypeAnnotations.java@4b4e282a3146 (annotated)

src/share/classes/com/sun/tools/javac/code/TypeAnnotations.java@4b4e282a3146 (annotated)

src/share/classes/com/sun/tools/javac/code/TypeAnnotations.java

Thu, 04 Feb 2010 10:14:28 -0800

author: jjg
date: Thu, 04 Feb 2010 10:14:28 -0800
changeset 489: 4b4e282a3146
parent 484: 732510cc3538
child 554: 9d9f26857129
permissions: -rw-r--r--

6923080: TreeScanner.visitNewClass should scan tree.typeargs
Reviewed-by: darcy

 /*
  * Copyright 2009 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.code;
 import javax.lang.model.element.ElementKind;
 import com.sun.tools.javac.code.Symbol.VarSymbol;
 import com.sun.tools.javac.tree.JCTree;
 import com.sun.tools.javac.tree.TreeInfo;
 import com.sun.tools.javac.tree.TreeScanner;
 import com.sun.tools.javac.tree.JCTree.*;
 import com.sun.tools.javac.util.Context;
 import com.sun.tools.javac.util.List;
 import com.sun.tools.javac.util.ListBuffer;
 /**
  * Contains operations specific to processing type annotations
  */
 public class TypeAnnotations {
     private static final Context.Key<TypeAnnotations> key
         = new Context.Key<TypeAnnotations>();
     public static TypeAnnotations instance(Context context) {
         TypeAnnotations instance = context.get(key);
         if (instance == null)
             instance = new TypeAnnotations(context);
         return instance;
     }
     protected TypeAnnotations(Context context) {
         context.put(key, this);
     }
     public void taFillAndLift(JCClassDecl tree, boolean visitBodies) {
         new TypeAnnotationPositions().scan(tree);
         new TypeAnnotationLift().scan(tree);
     }
     private static class TypeAnnotationPositions extends TreeScanner {
         private ListBuffer<JCTree> frames = ListBuffer.lb();
         private void push(JCTree t) { frames = frames.prepend(t); }
         private JCTree pop() { return frames.next(); }
         private JCTree peek2() { return frames.toList().tail.head; }
         @Override
         public void scan(JCTree tree) {
             push(tree);
             super.scan(tree);
             pop();
         }
         private boolean inClass = false;
         @Override
         public void visitClassDef(JCClassDecl tree) {
            if (!inClass) {
                // Do not recurse into nested and inner classes since
                // TransTypes.visitClassDef makes an invocation for each class
                // separately.
                inClass = true;
                try {
                    super.visitClassDef(tree);
                } finally {
                    inClass = false;
                }
            }
         }
         private TypeAnnotationPosition resolveFrame(JCTree tree, JCTree frame,
                 List<JCTree> path, TypeAnnotationPosition p) {
             switch (frame.getKind()) {
                 case TYPE_CAST:
                     p.type = TargetType.TYPECAST;
                     p.pos = frame.pos;
                     return p;
                 case INSTANCE_OF:
                     p.type = TargetType.INSTANCEOF;
                     p.pos = frame.pos;
                     return p;
                 case NEW_CLASS:
                     p.type = TargetType.NEW;
                     p.pos = frame.pos;
                     return p;
                 case NEW_ARRAY:
                     p.type = TargetType.NEW;
                     p.pos = frame.pos;
                     return p;
                 case CLASS:
                     p.pos = frame.pos;
                     if (((JCClassDecl)frame).extending == tree) {
                         p.type = TargetType.CLASS_EXTENDS;
                         p.type_index = -1;
                     } else if (((JCClassDecl)frame).implementing.contains(tree)) {
                         p.type = TargetType.CLASS_EXTENDS;
                         p.type_index = ((JCClassDecl)frame).implementing.indexOf(tree);
                     } else if (((JCClassDecl)frame).typarams.contains(tree)) {
                         p.type = TargetType.CLASS_TYPE_PARAMETER;
                         p.parameter_index = ((JCClassDecl)frame).typarams.indexOf(tree);
                     } else
                         throw new AssertionError();
                     return p;
                 case METHOD: {
                     JCMethodDecl frameMethod = (JCMethodDecl)frame;
                     p.pos = frame.pos;
                     if (frameMethod.receiverAnnotations.contains(tree))
                         p.type = TargetType.METHOD_RECEIVER;
                     else if (frameMethod.thrown.contains(tree)) {
                         p.type = TargetType.THROWS;
                         p.type_index = frameMethod.thrown.indexOf(tree);
                     } else if (((JCMethodDecl)frame).restype == tree) {
                         p.type = TargetType.METHOD_RETURN_GENERIC_OR_ARRAY;
                     } else if (frameMethod.typarams.contains(tree)) {
                         p.type = TargetType.METHOD_TYPE_PARAMETER;
                         p.parameter_index = frameMethod.typarams.indexOf(tree);
                     } else
                         throw new AssertionError();
                     return p;
                 }
                 case MEMBER_SELECT: {
                     JCFieldAccess fieldFrame = (JCFieldAccess)frame;
                     if ("class".contentEquals(fieldFrame.name)) {
                         p.type = TargetType.CLASS_LITERAL;
                         p.pos = TreeInfo.innermostType(fieldFrame.selected).pos;
                     } else
                         throw new AssertionError();
                     return p;
                 }
                 case PARAMETERIZED_TYPE: {
                     TypeAnnotationPosition nextP;
                     if (((JCTypeApply)frame).clazz == tree)
                         nextP = p; // generic: RAW; noop
                     else if (((JCTypeApply)frame).arguments.contains(tree))
                         p.location = p.location.prepend(
                                 ((JCTypeApply)frame).arguments.indexOf(tree));
                     else
                         throw new AssertionError();
                     List<JCTree> newPath = path.tail;
                     return resolveFrame(newPath.head, newPath.tail.head, newPath, p);
                 }
                 case ARRAY_TYPE: {
                     p.location = p.location.prepend(0);
                     List<JCTree> newPath = path.tail;
                     return resolveFrame(newPath.head, newPath.tail.head, newPath, p);
                 }
                 case TYPE_PARAMETER:
                     if (path.tail.tail.head.getTag() == JCTree.CLASSDEF) {
                         JCClassDecl clazz = (JCClassDecl)path.tail.tail.head;
                         p.type = TargetType.CLASS_TYPE_PARAMETER_BOUND;
                         p.parameter_index = clazz.typarams.indexOf(path.tail.head);
                         p.bound_index = ((JCTypeParameter)frame).bounds.indexOf(tree);
                     } else if (path.tail.tail.head.getTag() == JCTree.METHODDEF) {
                         JCMethodDecl method = (JCMethodDecl)path.tail.tail.head;
                         p.type = TargetType.METHOD_TYPE_PARAMETER_BOUND;
                         p.parameter_index = method.typarams.indexOf(path.tail.head);
                         p.bound_index = ((JCTypeParameter)frame).bounds.indexOf(tree);
                     } else
                         throw new AssertionError();
                     p.pos = frame.pos;
                     return p;
                 case VARIABLE:
                     VarSymbol v = ((JCVariableDecl)frame).sym;
                     p.pos = frame.pos;
                     switch (v.getKind()) {
                         case LOCAL_VARIABLE:
                             p.type = TargetType.LOCAL_VARIABLE; break;
                         case FIELD:
                             p.type = TargetType.FIELD_GENERIC_OR_ARRAY; break;
                         case PARAMETER:
                             p.type = TargetType.METHOD_PARAMETER_GENERIC_OR_ARRAY;
                             p.parameter_index = methodParamIndex(path, frame);
                             break;
                         default: throw new AssertionError();
                     }
                     return p;
                 case ANNOTATED_TYPE: {
                     List<JCTree> newPath = path.tail;
                     return resolveFrame(newPath.head, newPath.tail.head,
                             newPath, p);
                 }
                 case METHOD_INVOCATION: {
                     JCMethodInvocation invocation = (JCMethodInvocation)frame;
                     if (!invocation.typeargs.contains(tree))
                         throw new AssertionError("{" + tree + "} is not an argument in the invocation: " + invocation);
                     p.type = TargetType.METHOD_TYPE_ARGUMENT;
                     p.pos = invocation.pos;
                     p.type_index = invocation.typeargs.indexOf(tree);
                     return p;
                 }
                 case EXTENDS_WILDCARD:
                 case SUPER_WILDCARD: {
                     p.type = TargetType.WILDCARD_BOUND;
                     List<JCTree> newPath = path.tail;
                     TypeAnnotationPosition wildcard =
                         resolveFrame(newPath.head, newPath.tail.head, newPath,
                                 new TypeAnnotationPosition());
                     if (!wildcard.location.isEmpty())
                         wildcard.type = wildcard.type.getGenericComplement();
                     p.wildcard_position = wildcard;
                     p.pos = frame.pos;
                     return p;
                 }
             }
             return p;
         }
         private void setTypeAnnotationPos(List<JCTypeAnnotation> annotations, TypeAnnotationPosition position) {
             for (JCTypeAnnotation anno : annotations) {
                 anno.annotation_position = position;
                 anno.attribute_field.position = position;
             }
         }
         @Override
         public void visitNewArray(JCNewArray tree) {
             findPosition(tree, tree, tree.annotations);
             int dimAnnosCount = tree.dimAnnotations.size();
             // handle annotations associated with dimentions
             for (int i = 0; i < dimAnnosCount; ++i) {
                 TypeAnnotationPosition p = new TypeAnnotationPosition();
                 p.type = TargetType.NEW_GENERIC_OR_ARRAY;
                 p.pos = tree.pos;
                 p.location = p.location.append(i);
                 setTypeAnnotationPos(tree.dimAnnotations.get(i), p);
             }
             // handle "free" annotations
             int i = dimAnnosCount == 0 ? 0 : dimAnnosCount - 1;
             JCExpression elemType = tree.elemtype;
             while (elemType != null) {
                 if (elemType.getTag() == JCTree.ANNOTATED_TYPE) {
                     JCAnnotatedType at = (JCAnnotatedType)elemType;
                     TypeAnnotationPosition p = new TypeAnnotationPosition();
                     p.type = TargetType.NEW_GENERIC_OR_ARRAY;
                     p.pos = tree.pos;
                     p.location = p.location.append(i);
                     setTypeAnnotationPos(at.annotations, p);
                     elemType = at.underlyingType;
                 } else if (elemType.getTag() == JCTree.TYPEARRAY) {
                     ++i;
                     elemType = ((JCArrayTypeTree)elemType).elemtype;
                 } else
                     break;
             }
             // find annotations locations of initializer elements
             scan(tree.elems);
         }
         @Override
         public void visitAnnotatedType(JCAnnotatedType tree) {
             findPosition(tree, peek2(), tree.annotations);
             super.visitAnnotatedType(tree);
         }
         @Override
         public void visitMethodDef(JCMethodDecl tree) {
             TypeAnnotationPosition p = new TypeAnnotationPosition();
             p.type = TargetType.METHOD_RECEIVER;
             setTypeAnnotationPos(tree.receiverAnnotations, p);
             super.visitMethodDef(tree);
         }
         @Override
         public void visitTypeParameter(JCTypeParameter tree) {
             findPosition(tree, peek2(), tree.annotations);
             super.visitTypeParameter(tree);
         }
         void findPosition(JCTree tree, JCTree frame, List<JCTypeAnnotation> annotations) {
             if (!annotations.isEmpty()) {
                 TypeAnnotationPosition p =
                         resolveFrame(tree, frame, frames.toList(),
                                 new TypeAnnotationPosition());
                 if (!p.location.isEmpty())
                     p.type = p.type.getGenericComplement();
                 setTypeAnnotationPos(annotations, p);
             }
         }
         private int methodParamIndex(List<JCTree> path, JCTree param) {
             List<JCTree> curr = path;
             if (curr.head != param)
                 curr = path.tail;
             JCMethodDecl method = (JCMethodDecl)curr.tail.head;
             return method.params.indexOf(param);
         }
     }
     private static class TypeAnnotationLift extends TreeScanner {
         List<Attribute.TypeCompound> recordedTypeAnnotations = List.nil();
         boolean isInner = false;
         @Override
         public void visitClassDef(JCClassDecl tree) {
             if (isInner) {
                 // tree is an inner class tree.  stop now.
                 // TransTypes.visitClassDef makes an invocation for each class
                 // separately.
                 return;
             }
             isInner = true;
             List<Attribute.TypeCompound> prevTAs = recordedTypeAnnotations;
             recordedTypeAnnotations = List.nil();
             try {
                 super.visitClassDef(tree);
             } finally {
                 tree.sym.typeAnnotations = tree.sym.typeAnnotations.appendList(recordedTypeAnnotations);
                 recordedTypeAnnotations = prevTAs;
             }
         }
         @Override
         public void visitMethodDef(JCMethodDecl tree) {
             List<Attribute.TypeCompound> prevTAs = recordedTypeAnnotations;
             recordedTypeAnnotations = List.nil();
             try {
                 super.visitMethodDef(tree);
             } finally {
                 tree.sym.typeAnnotations = tree.sym.typeAnnotations.appendList(recordedTypeAnnotations);
                 recordedTypeAnnotations = prevTAs;
             }
         }
         @Override
         public void visitVarDef(JCVariableDecl tree) {
             List<Attribute.TypeCompound> prevTAs = recordedTypeAnnotations;
             recordedTypeAnnotations = List.nil();
             ElementKind kind = tree.sym.getKind();
             if (kind == ElementKind.LOCAL_VARIABLE && tree.mods.annotations.nonEmpty()) {
                 // need to lift the annotations
                 TypeAnnotationPosition position = new TypeAnnotationPosition();
                 position.pos = tree.pos;
                 position.type = TargetType.LOCAL_VARIABLE;
                 for (Attribute.Compound attribute : tree.sym.attributes_field) {
                     Attribute.TypeCompound tc =
                         new Attribute.TypeCompound(attribute.type, attribute.values, position);
                     recordedTypeAnnotations = recordedTypeAnnotations.append(tc);
                 }
             }
             try {
                 super.visitVarDef(tree);
             } finally {
                 if (kind.isField() || kind == ElementKind.LOCAL_VARIABLE)
                     tree.sym.typeAnnotations = tree.sym.typeAnnotations.appendList(recordedTypeAnnotations);
                 recordedTypeAnnotations = kind.isField() ? prevTAs : prevTAs.appendList(recordedTypeAnnotations);
             }
         }
         @Override
         public void visitApply(JCMethodInvocation tree) {
             scan(tree.meth);
             scan(tree.typeargs);
             scan(tree.args);
         }
         public void visitAnnotation(JCAnnotation tree) {
             if (tree instanceof JCTypeAnnotation)
                 recordedTypeAnnotations = recordedTypeAnnotations.append(((JCTypeAnnotation)tree).attribute_field);
             super.visitAnnotation(tree);
         }
     }
 }

Mercurial > jdk8-mips64-public > langtools / annotate

src/share/classes/com/sun/tools/javac/code/TypeAnnotations.java@4b4e282a3146 (annotated)

src/share/classes/com/sun/tools/javac/code/TypeAnnotations.java