8027886: javac allows illegal receiver parameters

Wed, 18 Jun 2014 12:30:29 -0400

author
pgovereau
date
Wed, 18 Jun 2014 12:30:29 -0400
changeset 2424
7e97c65c373c
parent 2422
4ee06c77b51b
child 2425
76b61848c9a4

8027886: javac allows illegal receiver parameters
8029042: Receiver parameter not supported on local class constructor
Reviewed-by: jfranck, jlahoda

src/share/classes/com/sun/tools/javac/code/Flags.java file | annotate | diff | comparison | revisions
src/share/classes/com/sun/tools/javac/comp/Check.java file | annotate | diff | comparison | revisions
src/share/classes/com/sun/tools/javac/comp/MemberEnter.java file | annotate | diff | comparison | revisions
src/share/classes/com/sun/tools/javac/tree/TreeInfo.java file | annotate | diff | comparison | revisions
test/tools/javac/annotations/FinalReceiverTest.java file | annotate | diff | comparison | revisions
test/tools/javac/annotations/FinalReceiverTest.out file | annotate | diff | comparison | revisions
test/tools/javac/annotations/LocalInnerReceiverTest.java file | annotate | diff | comparison | revisions
test/tools/javac/annotations/typeAnnotations/newlocations/Receivers.java file | annotate | diff | comparison | revisions
     1.1 --- a/src/share/classes/com/sun/tools/javac/code/Flags.java	Tue Jun 17 16:32:18 2014 -0600
     1.2 +++ b/src/share/classes/com/sun/tools/javac/code/Flags.java	Wed Jun 18 12:30:29 2014 -0400
     1.3 @@ -295,7 +295,8 @@
     1.4          ModifierFlags               = ((long)StandardFlags & ~INTERFACE) | DEFAULT,
     1.5          InterfaceMethodMask         = ABSTRACT | STATIC | PUBLIC | STRICTFP | DEFAULT,
     1.6          AnnotationTypeElementMask   = ABSTRACT | PUBLIC,
     1.7 -        LocalVarFlags               = FINAL | PARAMETER;
     1.8 +        LocalVarFlags               = FINAL | PARAMETER,
     1.9 +        ReceiverParamFlags          = PARAMETER;
    1.10  
    1.11  
    1.12      public static Set<Modifier> asModifierSet(long flags) {
     2.1 --- a/src/share/classes/com/sun/tools/javac/comp/Check.java	Tue Jun 17 16:32:18 2014 -0600
     2.2 +++ b/src/share/classes/com/sun/tools/javac/comp/Check.java	Wed Jun 18 12:30:29 2014 -0400
     2.3 @@ -1038,7 +1038,9 @@
     2.4  
     2.5          switch (sym.kind) {
     2.6          case VAR:
     2.7 -            if (sym.owner.kind != TYP)
     2.8 +            if (TreeInfo.isReceiverParam(tree))
     2.9 +                mask = ReceiverParamFlags;
    2.10 +            else if (sym.owner.kind != TYP)
    2.11                  mask = LocalVarFlags;
    2.12              else if ((sym.owner.flags_field & INTERFACE) != 0)
    2.13                  mask = implicit = InterfaceVarFlags;
     3.1 --- a/src/share/classes/com/sun/tools/javac/comp/MemberEnter.java	Tue Jun 17 16:32:18 2014 -0600
     3.2 +++ b/src/share/classes/com/sun/tools/javac/comp/MemberEnter.java	Wed Jun 18 12:30:29 2014 -0400
     3.3 @@ -652,22 +652,8 @@
     3.4                      attr.attribIdentAsEnumType(localEnv, (JCIdent)tree.vartype);
     3.5                  } else {
     3.6                      attr.attribType(tree.vartype, localEnv);
     3.7 -                    if (tree.nameexpr != null) {
     3.8 -                        attr.attribExpr(tree.nameexpr, localEnv);
     3.9 -                        MethodSymbol m = localEnv.enclMethod.sym;
    3.10 -                        if (m.isConstructor()) {
    3.11 -                            Type outertype = m.owner.owner.type;
    3.12 -                            if (outertype.hasTag(TypeTag.CLASS)) {
    3.13 -                                checkType(tree.vartype, outertype, "incorrect.constructor.receiver.type");
    3.14 -                                checkType(tree.nameexpr, outertype, "incorrect.constructor.receiver.name");
    3.15 -                            } else {
    3.16 -                                log.error(tree, "receiver.parameter.not.applicable.constructor.toplevel.class");
    3.17 -                            }
    3.18 -                        } else {
    3.19 -                            checkType(tree.vartype, m.owner.type, "incorrect.receiver.type");
    3.20 -                            checkType(tree.nameexpr, m.owner.type, "incorrect.receiver.name");
    3.21 -                        }
    3.22 -                    }
    3.23 +                    if (TreeInfo.isReceiverParam(tree))
    3.24 +                        checkReceiver(tree, localEnv);
    3.25                  }
    3.26              } finally {
    3.27                  deferredLintHandler.setPos(prevLintPos);
    3.28 @@ -714,6 +700,26 @@
    3.29              log.error(tree, diag, type, tree.type);
    3.30          }
    3.31      }
    3.32 +    void checkReceiver(JCVariableDecl tree, Env<AttrContext> localEnv) {
    3.33 +        attr.attribExpr(tree.nameexpr, localEnv);
    3.34 +        MethodSymbol m = localEnv.enclMethod.sym;
    3.35 +        if (m.isConstructor()) {
    3.36 +            Type outertype = m.owner.owner.type;
    3.37 +            if (outertype.hasTag(TypeTag.METHOD)) {
    3.38 +                // we have a local inner class
    3.39 +                outertype = m.owner.owner.owner.type;
    3.40 +            }
    3.41 +            if (outertype.hasTag(TypeTag.CLASS)) {
    3.42 +                checkType(tree.vartype, outertype, "incorrect.constructor.receiver.type");
    3.43 +                checkType(tree.nameexpr, outertype, "incorrect.constructor.receiver.name");
    3.44 +            } else {
    3.45 +                log.error(tree, "receiver.parameter.not.applicable.constructor.toplevel.class");
    3.46 +            }
    3.47 +        } else {
    3.48 +            checkType(tree.vartype, m.owner.type, "incorrect.receiver.type");
    3.49 +            checkType(tree.nameexpr, m.owner.type, "incorrect.receiver.name");
    3.50 +        }
    3.51 +    }
    3.52  
    3.53      public boolean needsLazyConstValue(JCTree tree) {
    3.54          InitTreeVisitor initTreeVisitor = new InitTreeVisitor();
     4.1 --- a/src/share/classes/com/sun/tools/javac/tree/TreeInfo.java	Tue Jun 17 16:32:18 2014 -0600
     4.2 +++ b/src/share/classes/com/sun/tools/javac/tree/TreeInfo.java	Wed Jun 18 12:30:29 2014 -0400
     4.3 @@ -135,6 +135,14 @@
     4.4          }
     4.5      }
     4.6  
     4.7 +    public static boolean isReceiverParam(JCTree tree) {
     4.8 +        if (tree.hasTag(VARDEF)) {
     4.9 +            return ((JCVariableDecl)tree).nameexpr != null;
    4.10 +        } else {
    4.11 +            return false;
    4.12 +        }
    4.13 +    }
    4.14 +
    4.15      /** Is there a constructor declaration in the given list of trees?
    4.16       */
    4.17      public static boolean hasConstructors(List<JCTree> trees) {
     5.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     5.2 +++ b/test/tools/javac/annotations/FinalReceiverTest.java	Wed Jun 18 12:30:29 2014 -0400
     5.3 @@ -0,0 +1,14 @@
     5.4 +/*
     5.5 + * @test /nodynamiccopyright/
     5.6 + * @bug 8027886
     5.7 + * @summary Receiver parameters must not be final
     5.8 + * @compile/fail/ref=FinalReceiverTest.out  -XDrawDiagnostics FinalReceiverTest.java
     5.9 + */
    5.10 +
    5.11 +class FinalReceiverTest {
    5.12 +    void m() {
    5.13 +        class Inner {
    5.14 +            Inner(final FinalReceiverTest FinalReceiverTest.this) {}
    5.15 +        }
    5.16 +    }
    5.17 +}
     6.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     6.2 +++ b/test/tools/javac/annotations/FinalReceiverTest.out	Wed Jun 18 12:30:29 2014 -0400
     6.3 @@ -0,0 +1,2 @@
     6.4 +FinalReceiverTest.java:11:43: compiler.err.mod.not.allowed.here: final
     6.5 +1 error
     7.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     7.2 +++ b/test/tools/javac/annotations/LocalInnerReceiverTest.java	Wed Jun 18 12:30:29 2014 -0400
     7.3 @@ -0,0 +1,37 @@
     7.4 +/*
     7.5 + * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
     7.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
     7.7 + *
     7.8 + * This code is free software; you can redistribute it and/or modify it
     7.9 + * under the terms of the GNU General Public License version 2 only, as
    7.10 + * published by the Free Software Foundation.
    7.11 + *
    7.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
    7.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    7.14 + * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    7.15 + * version 2 for more details (a copy is included in the LICENSE file that
    7.16 + * accompanied this code).
    7.17 + *
    7.18 + * You should have received a copy of the GNU General Public License version
    7.19 + * 2 along with this work; if not, write to the Free Software Foundation,
    7.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
    7.21 + *
    7.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
    7.23 + * or visit www.oracle.com if you need additional information or have any
    7.24 + * questions.
    7.25 + */
    7.26 +
    7.27 +/*
    7.28 + * @test
    7.29 + * @bug 8029042
    7.30 + * @summary Receiver parameter not supported on local class constructor
    7.31 + * @compile LocalInnerReceiverTest.java
    7.32 + */
    7.33 +
    7.34 +class LocalInnerReceiverTest {
    7.35 +    void m() {
    7.36 +        class Inner {
    7.37 +            Inner(LocalInnerReceiverTest LocalInnerReceiverTest.this) {}
    7.38 +        }
    7.39 +    }
    7.40 +}
     8.1 --- a/test/tools/javac/annotations/typeAnnotations/newlocations/Receivers.java	Tue Jun 17 16:32:18 2014 -0600
     8.2 +++ b/test/tools/javac/annotations/typeAnnotations/newlocations/Receivers.java	Wed Jun 18 12:30:29 2014 -0400
     8.3 @@ -54,14 +54,6 @@
     8.4    <T extends Runnable> void accept(@B("m") WithValue this, T r) throws Exception { }
     8.5  }
     8.6  
     8.7 -class WithFinal {
     8.8 -  void plain(final @B("m") WithFinal this) { }
     8.9 -  <T> void generic(final @B("m") WithFinal this) { }
    8.10 -  void withException(final @B("m") WithFinal this) throws Exception { }
    8.11 -  String nonVoid(final @B("m") WithFinal this) { return null; }
    8.12 -  <T extends Runnable> void accept(final @B("m") WithFinal this, T r) throws Exception { }
    8.13 -}
    8.14 -
    8.15  class WithBody {
    8.16    Object f;
    8.17  

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