272 lines
6.5 KiB
Java
272 lines
6.5 KiB
Java
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/*
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* Copyright (c) 2015, 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;
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import java.lang.StackWalker.Option;
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import java.util.EnumSet;
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import java.util.Set;
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import static java.lang.StackWalker.ExtendedOption.*;
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final class LiveStackFrameInfo extends StackFrameInfo implements LiveStackFrame {
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private static Object[] EMPTY_ARRAY = new Object[0];
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LiveStackFrameInfo(StackWalker walker) {
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super(walker);
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}
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// These fields are initialized by the VM if ExtendedOption.LOCALS_AND_OPERANDS is set
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private Object[] monitors = EMPTY_ARRAY;
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private Object[] locals = EMPTY_ARRAY;
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private Object[] operands = EMPTY_ARRAY;
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@Override
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public Object[] getMonitors() {
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return monitors;
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}
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@Override
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public Object[] getLocals() {
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return locals;
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}
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@Override
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public Object[] getStack() {
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return operands;
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}
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/*
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* Convert primitive value to {@code Primitive} object to represent
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* a local variable or an element on the operand stack of primitive type.
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*/
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static PrimitiveValue asPrimitive(boolean value) {
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return new BooleanPrimitive(value);
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}
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static PrimitiveValue asPrimitive(int value) {
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return new IntPrimitive(value);
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}
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static PrimitiveValue asPrimitive(short value) {
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return new ShortPrimitive(value);
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}
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static PrimitiveValue asPrimitive(char value) {
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return new CharPrimitive(value);
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}
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static PrimitiveValue asPrimitive(byte value) {
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return new BytePrimitive(value);
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}
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static PrimitiveValue asPrimitive(long value) {
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return new LongPrimitive(value);
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}
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static PrimitiveValue asPrimitive(float value) {
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return new FloatPrimitive(value);
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}
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static PrimitiveValue asPrimitive(double value) {
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return new DoublePrimitive(value);
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}
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private static class IntPrimitive extends PrimitiveValue {
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final int value;
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IntPrimitive(int value) {
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this.value = value;
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}
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@Override
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public char type() {
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return 'I';
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}
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@Override
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public int intValue() {
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return value;
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}
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@Override
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public String toString() {
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return String.valueOf(value);
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}
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}
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private static class ShortPrimitive extends PrimitiveValue {
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final short value;
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ShortPrimitive(short value) {
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this.value = value;
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}
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@Override
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public char type() {
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return 'S';
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}
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@Override
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public short shortValue() {
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return value;
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}
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@Override
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public String toString() {
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return String.valueOf(value);
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}
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}
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private static class BooleanPrimitive extends PrimitiveValue {
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final boolean value;
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BooleanPrimitive(boolean value) {
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this.value = value;
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}
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@Override
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public char type() {
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return 'Z';
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}
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@Override
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public boolean booleanValue() {
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return value;
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}
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@Override
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public String toString() {
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return String.valueOf(value);
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}
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}
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private static class CharPrimitive extends PrimitiveValue {
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final char value;
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CharPrimitive(char value) {
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this.value = value;
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}
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@Override
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public char type() {
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return 'C';
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}
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@Override
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public char charValue() {
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return value;
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}
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@Override
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public String toString() {
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return String.valueOf(value);
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}
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}
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private static class BytePrimitive extends PrimitiveValue {
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final byte value;
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BytePrimitive(byte value) {
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this.value = value;
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}
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@Override
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public char type() {
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return 'B';
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}
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@Override
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public byte byteValue() {
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return value;
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}
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@Override
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public String toString() {
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return String.valueOf(value);
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}
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}
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private static class LongPrimitive extends PrimitiveValue {
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final long value;
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LongPrimitive(long value) {
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this.value = value;
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}
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@Override
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public char type() {
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return 'J';
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}
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@Override
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public long longValue() {
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return value;
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}
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@Override
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public String toString() {
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return String.valueOf(value);
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}
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}
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private static class FloatPrimitive extends PrimitiveValue {
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final float value;
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FloatPrimitive(float value) {
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this.value = value;
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}
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@Override
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public char type() {
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return 'F';
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}
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@Override
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public float floatValue() {
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return value;
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}
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@Override
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public String toString() {
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return String.valueOf(value);
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}
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}
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private static class DoublePrimitive extends PrimitiveValue {
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final double value;
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DoublePrimitive(double value) {
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this.value = value;
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}
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@Override
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public char type() {
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return 'D';
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}
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@Override
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public double doubleValue() {
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return value;
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}
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@Override
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public String toString() {
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return String.valueOf(value);
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}
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}
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}
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