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8323746: Add PathElement hashCode and equals

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Reviewed-by: mcimadamore
This commit is contained in:
Per Minborg 2024-02-08 10:54:11 +00:00
parent 917838e0a5
commit b58d73b915
4 changed files with 165 additions and 86 deletions
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48
src/java.base/share/classes/java/lang/foreign/MemoryLayout.java
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2019, 2023, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2019, 2024, 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
@ -32,7 +32,6 @@ import java.util.Optional;
import java.util.stream.Stream;
import jdk.internal.foreign.LayoutPath;
import jdk.internal.foreign.LayoutPath.PathElementImpl.PathKind;
import jdk.internal.foreign.Utils;
import jdk.internal.foreign.layout.MemoryLayoutUtil;
import jdk.internal.foreign.layout.PaddingLayoutImpl;
@ -847,7 +846,13 @@ public sealed interface MemoryLayout
*
* @since 22
*/
sealed interface PathElement permits LayoutPath.PathElementImpl {
sealed interface PathElement
permits LayoutPath.DereferenceElement,
LayoutPath.GroupElementByIndex,
LayoutPath.GroupElementByName,
LayoutPath.SequenceElement,
LayoutPath.SequenceElementByIndex,
LayoutPath.SequenceElementByRange {
/**
* {@return a path element which selects a member layout with the given name in a
@ -862,10 +867,7 @@ public sealed interface MemoryLayout
* @param name the name of the member layout to be selected
*/
static PathElement groupElement(String name) {
Objects.requireNonNull(name);
return new LayoutPath.PathElementImpl(PathKind.GROUP_ELEMENT,
path -> path.groupElement(name),
"groupElement(\"" + name + "\")");
return new LayoutPath.GroupElementByName(name);
}
/**
@ -876,12 +878,7 @@ public sealed interface MemoryLayout
* @throws IllegalArgumentException if {@code index < 0}
*/
static PathElement groupElement(long index) {
if (index < 0) {
throw new IllegalArgumentException("Index < 0");
}
return new LayoutPath.PathElementImpl(PathKind.GROUP_ELEMENT,
path -> path.groupElement(index),
"groupElement(" + index + ")");
return new LayoutPath.GroupElementByIndex(index);
}
/**
@ -892,12 +889,7 @@ public sealed interface MemoryLayout
* @throws IllegalArgumentException if {@code index < 0}
*/
static PathElement sequenceElement(long index) {
if (index < 0) {
throw new IllegalArgumentException("Index must be positive: " + index);
}
return new LayoutPath.PathElementImpl(PathKind.SEQUENCE_ELEMENT_INDEX,
path -> path.sequenceElement(index),
"sequenceElement(" + index + ")");
return new LayoutPath.SequenceElementByIndex(index);
}
/**
@ -923,15 +915,7 @@ public sealed interface MemoryLayout
* @throws IllegalArgumentException if {@code start < 0}, or {@code step == 0}
*/
static PathElement sequenceElement(long start, long step) {
if (start < 0) {
throw new IllegalArgumentException("Start index must be positive: " + start);
}
if (step == 0) {
throw new IllegalArgumentException("Step must be != 0: " + step);
}
return new LayoutPath.PathElementImpl(PathKind.SEQUENCE_RANGE,
path -> path.sequenceElement(start, step),
"sequenceElement(" + start + ", " + step + ")");
return new LayoutPath.SequenceElementByRange(start, step);
}
/**
@ -943,9 +927,7 @@ public sealed interface MemoryLayout
* {@code 0 <= I < C}.
*/
static PathElement sequenceElement() {
return new LayoutPath.PathElementImpl(PathKind.SEQUENCE_ELEMENT,
LayoutPath::sequenceElement,
"sequenceElement()");
return LayoutPath.SequenceElement.instance();
}
/**
@ -953,9 +935,7 @@ public sealed interface MemoryLayout
* {@linkplain AddressLayout#targetLayout() target layout} (where set)}
*/
static PathElement dereferenceElement() {
return new LayoutPath.PathElementImpl(PathKind.DEREF_ELEMENT,
LayoutPath::derefElement,
"dereferenceElement()");
return LayoutPath.DereferenceElement.instance();
}
}