| /* |
| * Copyright (c) 2009, 2015, 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. |
| * |
| * 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.vm.ci.meta; |
| |
| import java.nio.*; |
| |
| /** |
| * Represents a primitive constant value, such as an integer or floating point number, within the |
| * compiler and across the compiler/runtime interface. |
| */ |
| public class PrimitiveConstant implements JavaConstant, SerializableConstant { |
| |
| private final JavaKind kind; |
| |
| /** |
| * The boxed primitive value as a {@code long}. For {@code float} and {@code double} values, |
| * this value is the result of {@link Float#floatToRawIntBits(float)} and |
| * {@link Double#doubleToRawLongBits(double)} respectively. |
| */ |
| private final long primitive; |
| |
| protected PrimitiveConstant(JavaKind kind, long primitive) { |
| this.primitive = primitive; |
| this.kind = kind; |
| |
| assert kind.isPrimitive() || kind == JavaKind.Illegal; |
| } |
| |
| @Override |
| public JavaKind getJavaKind() { |
| return kind; |
| } |
| |
| @Override |
| public boolean isNull() { |
| return false; |
| } |
| |
| @Override |
| public boolean isDefaultForKind() { |
| return primitive == 0; |
| } |
| |
| @Override |
| public boolean asBoolean() { |
| assert getJavaKind() == JavaKind.Boolean; |
| return primitive != 0L; |
| } |
| |
| @Override |
| public int asInt() { |
| assert getJavaKind().getStackKind() == JavaKind.Int : getJavaKind().getStackKind(); |
| return (int) primitive; |
| } |
| |
| @Override |
| public long asLong() { |
| assert getJavaKind().isNumericInteger(); |
| return primitive; |
| } |
| |
| @Override |
| public float asFloat() { |
| assert getJavaKind() == JavaKind.Float; |
| return Float.intBitsToFloat((int) primitive); |
| } |
| |
| @Override |
| public double asDouble() { |
| assert getJavaKind() == JavaKind.Double; |
| return Double.longBitsToDouble(primitive); |
| } |
| |
| @Override |
| public Object asBoxedPrimitive() { |
| switch (getJavaKind()) { |
| case Byte: |
| return Byte.valueOf((byte) primitive); |
| case Boolean: |
| return Boolean.valueOf(asBoolean()); |
| case Short: |
| return Short.valueOf((short) primitive); |
| case Char: |
| return Character.valueOf((char) primitive); |
| case Int: |
| return Integer.valueOf(asInt()); |
| case Long: |
| return Long.valueOf(asLong()); |
| case Float: |
| return Float.valueOf(asFloat()); |
| case Double: |
| return Double.valueOf(asDouble()); |
| default: |
| throw new IllegalArgumentException("unexpected kind " + getJavaKind()); |
| } |
| } |
| |
| @Override |
| public int getSerializedSize() { |
| return getJavaKind().getByteCount(); |
| } |
| |
| @Override |
| public void serialize(ByteBuffer buffer) { |
| switch (getJavaKind()) { |
| case Byte: |
| case Boolean: |
| buffer.put((byte) primitive); |
| break; |
| case Short: |
| buffer.putShort((short) primitive); |
| break; |
| case Char: |
| buffer.putChar((char) primitive); |
| break; |
| case Int: |
| buffer.putInt(asInt()); |
| break; |
| case Long: |
| buffer.putLong(asLong()); |
| break; |
| case Float: |
| buffer.putFloat(asFloat()); |
| break; |
| case Double: |
| buffer.putDouble(asDouble()); |
| break; |
| default: |
| throw new IllegalArgumentException("unexpected kind " + getJavaKind()); |
| } |
| } |
| |
| @Override |
| public int hashCode() { |
| return (int) (primitive ^ (primitive >>> 32)) * (getJavaKind().ordinal() + 31); |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (o == this) { |
| return true; |
| } |
| if (!(o instanceof PrimitiveConstant)) { |
| return false; |
| } |
| PrimitiveConstant other = (PrimitiveConstant) o; |
| return this.kind.equals(other.kind) && this.primitive == other.primitive; |
| } |
| |
| @Override |
| public String toString() { |
| if (getJavaKind() == JavaKind.Illegal) { |
| return "illegal"; |
| } else { |
| return getJavaKind().getJavaName() + "[" + asBoxedPrimitive() + "|0x" + Long.toHexString(primitive) + "]"; |
| } |
| } |
| } |