--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/agent/src/share/classes/sun/jvm/hotspot/code/ScopeValue.java Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,78 @@
+/*
+ * Copyright 2000-2001 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+package sun.jvm.hotspot.code;
+
+import java.io.*;
+
+import sun.jvm.hotspot.utilities.*;
+
+/** <P> Classes used for serializing debugging information. These
+ abstractions are introducted to provide symmetric read and write
+ operations. </P>
+
+ <P>
+ <UL>
+ <LI> ScopeValue: describes the value of a variable/expression in a scope
+ <UL>
+ <LI> LocationValue: describes a value in a given location (in frame or register)
+ <LI> ConstantValue: describes a constant
+ </UL>
+ </UL>
+ </P> */
+
+public abstract class ScopeValue {
+ // Package private enumeration values (FIXME: read from target VM)
+ static final int LOCATION_CODE = 0;
+ static final int CONSTANT_INT_CODE = 1;
+ static final int CONSTANT_OOP_CODE = 2;
+ static final int CONSTANT_LONG_CODE = 3;
+ static final int CONSTANT_DOUBLE_CODE = 4;
+
+ public boolean isLocation() { return false; }
+ public boolean isConstantInt() { return false; }
+ public boolean isConstantDouble() { return false; }
+ public boolean isConstantLong() { return false; }
+ public boolean isConstantOop() { return false; }
+
+ public static ScopeValue readFrom(DebugInfoReadStream stream) {
+ switch (stream.readInt()) {
+ case LOCATION_CODE:
+ return new LocationValue(stream);
+ case CONSTANT_INT_CODE:
+ return new ConstantIntValue(stream);
+ case CONSTANT_OOP_CODE:
+ return new ConstantOopReadValue(stream);
+ case CONSTANT_LONG_CODE:
+ return new ConstantLongValue(stream);
+ case CONSTANT_DOUBLE_CODE:
+ return new ConstantDoubleValue(stream);
+ default:
+ Assert.that(false, "should not reach here");
+ return null;
+ }
+ }
+
+ public abstract void printOn(PrintStream tty);
+}