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Truffle is a multi-language framework for executing dynamic languages
that achieves high performance when combined with Graal.
/*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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* The Universal Permissive License (UPL), Version 1.0
*
* Subject to the condition set forth below, permission is hereby granted to any
* person obtaining a copy of this software, associated documentation and/or
* data (collectively the "Software"), free of charge and under any and all
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* unmodified Software as contributed to or provided by such licensor, or (ii)
* the Larger Works (as defined below), to deal in both
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* (a) the Software, and
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* (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if
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package com.oracle.truffle.api.staticobject;
/**
* Describes the kind of a {@link StaticProperty}.
*
* @see StaticProperty
* @since 21.3.0
*/
enum StaticPropertyKind {
// The ordinal values of these enum types influences field scheduling in ArrayBasedStaticShape.
// There, we want to schedule 'bigger' field types first (see `getBitCount()`).
/**
* The primitive long kind.
*/
Long, // 0
/**
* The primitive double kind.
*/
Double, // 1
/**
* The primitive int kind.
*/
Int, // 2
/**
* The primitive float kind.
*/
Float, // 3
/**
* The primitive short kind.
*/
Short, // 4
/**
* The primitive char kind.
*/
Char, // 5
/**
* The primitive byte kind.
*/
Byte, // 6
/**
* The primitive boolean kind.
*/
Boolean, // 7
/**
* The Object kind.
*/
Object; // 8
static final int N_PRIMITIVES = 8;
static final byte BYTE_ARRAY = 9;
static final byte OBJECT_ARRAY = 10;
static String getDescriptor(int i) {
if (i == StaticPropertyKind.Long.ordinal()) {
return "J";
} else if (i == StaticPropertyKind.Double.ordinal()) {
return "D";
} else if (i == StaticPropertyKind.Int.ordinal()) {
return "I";
} else if (i == StaticPropertyKind.Float.ordinal()) {
return "F";
} else if (i == StaticPropertyKind.Short.ordinal()) {
return "S";
} else if (i == StaticPropertyKind.Char.ordinal()) {
return "C";
} else if (i == StaticPropertyKind.Byte.ordinal()) {
return "B";
} else if (i == StaticPropertyKind.Boolean.ordinal()) {
return "Z";
} else if (i == StaticPropertyKind.Object.ordinal()) {
return "Ljava/lang/Object;";
} else if (i == BYTE_ARRAY) {
return "[B";
} else if (i == OBJECT_ARRAY) {
return "[Ljava/lang/Object;";
} else {
throw new IllegalArgumentException("Invalid StaticPropertyKind: " + i);
}
}
/**
* Number of bytes that are necessary to represent a value of this kind.
*
* @return the number of bytes
*/
static int getByteCount(int b) {
if (b == StaticPropertyKind.Boolean.ordinal()) {
return 1;
} else {
return getBitCount(b) >> 3;
}
}
/**
* Number of bits that are necessary to represent a value of this kind.
*
* @return the number of bits
*/
private static int getBitCount(int b) {
if (b == StaticPropertyKind.Boolean.ordinal()) {
return 1;
} else if (b == StaticPropertyKind.Byte.ordinal()) {
return 8;
} else if (b == StaticPropertyKind.Char.ordinal() || b == StaticPropertyKind.Short.ordinal()) {
return 16;
} else if (b == StaticPropertyKind.Float.ordinal() || b == StaticPropertyKind.Int.ordinal()) {
return 32;
} else if (b == StaticPropertyKind.Double.ordinal() || b == StaticPropertyKind.Long.ordinal()) {
return 64;
} else {
throw new IllegalArgumentException("Invalid StaticPropertyKind: " + b);
}
}
static StaticPropertyKind valueOf(Class type) {
if (type == long.class) {
return StaticPropertyKind.Long;
} else if (type == double.class) {
return StaticPropertyKind.Double;
} else if (type == int.class) {
return StaticPropertyKind.Int;
} else if (type == float.class) {
return StaticPropertyKind.Float;
} else if (type == short.class) {
return StaticPropertyKind.Short;
} else if (type == char.class) {
return StaticPropertyKind.Char;
} else if (type == byte.class) {
return StaticPropertyKind.Byte;
} else if (type == boolean.class) {
return StaticPropertyKind.Boolean;
} else if (type == Object.class) {
return StaticPropertyKind.Object;
}
throw new IllegalArgumentException("Invalid Static Property type: " + type.getName());
}
static StaticPropertyKind valueOf(byte b) {
return StaticPropertyKind.values()[b];
}
byte toByte() {
assert StaticPropertyKind.values().length < java.lang.Byte.MAX_VALUE;
return (byte) ordinal();
}
}