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65 lines
2.5 KiB
Java
65 lines
2.5 KiB
Java
/*
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* Copyright (c) 2022, 2025, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package java.lang.classfile.constantpool;
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import java.lang.classfile.TypeKind;
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import jdk.internal.classfile.impl.AbstractPoolEntry;
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/**
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* Models a {@code CONSTANT_Double_info} structure, representing a {@code
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* double} constant, in the constant pool of a {@code class} file.
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* <p>
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* The use of a {@code DoubleEntry} is modeled by a {@code double}. Conversions
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* are through {@link ConstantPoolBuilder#doubleEntry} and {@link #doubleValue()}.
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* In the conversions, all NaN values of the {@code double} may or may not be
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* collapsed into a single {@linkplain Double#NaN "canonical" NaN value}.
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* <p>
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* A double entry has a {@linkplain #width() width} of {@code 2}, making its
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* subsequent constant pool index valid and unusable.
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*
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* @see ConstantPoolBuilder#doubleEntry ConstantPoolBuilder::doubleEntry
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* @jvms 4.4.5 The {@code CONSTANT_Long_info} and {@code CONSTANT_Double_info}
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* Structures
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* @since 24
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*/
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public sealed interface DoubleEntry
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extends AnnotationConstantValueEntry, ConstantValueEntry
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permits AbstractPoolEntry.DoubleEntryImpl {
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/**
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* {@return the {@code double} value}
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*
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* @see ConstantPoolBuilder#doubleEntry(double)
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* ConstantPoolBuilder::doubleEntry(double)
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*/
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double doubleValue();
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@Override
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default TypeKind typeKind() {
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return TypeKind.DOUBLE;
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}
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}
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