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Diffstat (limited to 'src/jdk/nashorn/internal/runtime/linker/AdaptationResult.java')
-rw-r--r-- | src/jdk/nashorn/internal/runtime/linker/AdaptationResult.java | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/src/jdk/nashorn/internal/runtime/linker/AdaptationResult.java b/src/jdk/nashorn/internal/runtime/linker/AdaptationResult.java new file mode 100644 index 00000000..5185a955 --- /dev/null +++ b/src/jdk/nashorn/internal/runtime/linker/AdaptationResult.java @@ -0,0 +1,74 @@ +/* + * Copyright (c) 2010, 2013, 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 jdk.nashorn.internal.runtime.linker; + +import jdk.nashorn.internal.runtime.ECMAErrors; +import jdk.nashorn.internal.runtime.ECMAException; + +/** + * A result of generating an adapter for a class. A tuple of an outcome and - in case of an error outcome - a list of + * classes that caused the error. + */ +class AdaptationResult { + /** + * Contains various outcomes for attempting to generate an adapter class. These are stored in AdapterInfo instances. + * We have a successful outcome (adapter class was generated) and four possible error outcomes: superclass is final, + * superclass is not public, superclass has no public or protected constructor, more than one superclass was + * specified. We don't throw exceptions when we try to generate the adapter, but rather just record these error + * conditions as they are still useful as partial outcomes, as Nashorn's linker can still successfully check whether + * the class can be autoconverted from a script function even when it is not possible to generate an adapter for it. + */ + enum Outcome { + SUCCESS, + ERROR_FINAL_CLASS, + ERROR_NON_PUBLIC_CLASS, + ERROR_NO_ACCESSIBLE_CONSTRUCTOR, + ERROR_MULTIPLE_SUPERCLASSES, + ERROR_NO_COMMON_LOADER + } + + static final AdaptationResult SUCCESSFUL_RESULT = new AdaptationResult(Outcome.SUCCESS, ""); + + private final Outcome outcome; + private final String classList; + + AdaptationResult(final Outcome outcome, final String classList) { + this.outcome = outcome; + this.classList = classList; + } + + Outcome getOutcome() { + return outcome; + } + + String getClassList() { + return classList; + } + + ECMAException typeError() { + return ECMAErrors.typeError("extend." + outcome, classList); + } +} |