--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/jdk.jdi/share/classes/com/sun/tools/jdi/LocalVariableImpl.java Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,187 @@
+/*
+ * Copyright (c) 1998, 2017, 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. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * 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 com.sun.tools.jdi;
+
+import com.sun.jdi.AbsentInformationException;
+import com.sun.jdi.ClassNotLoadedException;
+import com.sun.jdi.InternalException;
+import com.sun.jdi.LocalVariable;
+import com.sun.jdi.Location;
+import com.sun.jdi.Method;
+import com.sun.jdi.StackFrame;
+import com.sun.jdi.Type;
+import com.sun.jdi.VirtualMachine;
+
+public class LocalVariableImpl extends MirrorImpl
+ implements LocalVariable, ValueContainer
+{
+ private final Method method;
+ private final int slot;
+ private final Location scopeStart;
+ private final Location scopeEnd;
+ private final String name;
+ private final String signature;
+ private String genericSignature = null;
+
+ LocalVariableImpl(VirtualMachine vm, Method method,
+ int slot, Location scopeStart, Location scopeEnd,
+ String name, String signature,
+ String genericSignature) {
+ super(vm);
+ this.method = method;
+ this.slot = slot;
+ this.scopeStart = scopeStart;
+ this.scopeEnd = scopeEnd;
+ this.name = name;
+ this.signature = signature;
+ if (genericSignature != null && genericSignature.length() > 0) {
+ this.genericSignature = genericSignature;
+ } else {
+ // The Spec says to return null for non-generic types
+ this.genericSignature = null;
+ }
+ }
+
+ public boolean equals(Object obj) {
+ if ((obj != null) && (obj instanceof LocalVariableImpl)) {
+ LocalVariableImpl other = (LocalVariableImpl)obj;
+ return ((slot() == other.slot()) &&
+ (scopeStart != null) &&
+ (scopeStart.equals(other.scopeStart)) &&
+ (super.equals(obj)));
+ } else {
+ return false;
+ }
+ }
+
+ public int hashCode() {
+ /*
+ * TO DO: Better hash code
+ */
+ return ((scopeStart.hashCode() << 4) + slot());
+ }
+
+ public int compareTo(LocalVariable object) {
+ LocalVariableImpl other = (LocalVariableImpl)object;
+
+ int rc = scopeStart.compareTo(other.scopeStart);
+ if (rc == 0) {
+ rc = slot() - other.slot();
+ }
+ return rc;
+ }
+
+ public String name() {
+ return name;
+ }
+
+ /**
+ * @return a text representation of the declared type
+ * of this variable.
+ */
+ public String typeName() {
+ JNITypeParser parser = new JNITypeParser(signature);
+ return parser.typeName();
+ }
+
+ public Type type() throws ClassNotLoadedException {
+ return findType(signature());
+ }
+
+ public Type findType(String signature) throws ClassNotLoadedException {
+ ReferenceTypeImpl enclosing = (ReferenceTypeImpl)method.declaringType();
+ return enclosing.findType(signature);
+ }
+
+ public String signature() {
+ return signature;
+ }
+
+ public String genericSignature() {
+ return genericSignature;
+ }
+
+ public boolean isVisible(StackFrame frame) {
+ validateMirror(frame);
+ Method frameMethod = frame.location().method();
+
+ if (!frameMethod.equals(method)) {
+ throw new IllegalArgumentException(
+ "frame method different than variable's method");
+ }
+
+ // this is here to cover the possibility that we will
+ // allow LocalVariables for native methods. If we do
+ // so we will have to re-examinine this.
+ if (frameMethod.isNative()) {
+ return false;
+ }
+
+ return ((scopeStart.compareTo(frame.location()) <= 0)
+ && (scopeEnd.compareTo(frame.location()) >= 0));
+ }
+
+ public boolean isArgument() {
+ try {
+ MethodImpl method = (MethodImpl)scopeStart.method();
+ return (slot < method.argSlotCount());
+ } catch (AbsentInformationException e) {
+ // If this variable object exists, there shouldn't be absent info
+ throw new InternalException();
+ }
+ }
+
+ int slot() {
+ return slot;
+ }
+
+ /*
+ * Compilers/VMs can have byte code ranges for variables of the
+ * same names that overlap. This is because the byte code ranges
+ * aren't necessarily scopes; they may have more to do with the
+ * lifetime of the variable's slot, depending on implementation.
+ *
+ * This method determines whether this variable hides an
+ * identically named variable; ie, their byte code ranges overlap
+ * this one starts after the given one. If it returns true this
+ * variable should be preferred when looking for a single variable
+ * with its name when both variables are visible.
+ */
+ boolean hides(LocalVariable other) {
+ LocalVariableImpl otherImpl = (LocalVariableImpl)other;
+ if (!method.equals(otherImpl.method) ||
+ !name.equals(otherImpl.name)) {
+ return false;
+ } else {
+ return (scopeStart.compareTo(otherImpl.scopeStart) > 0);
+ }
+ }
+
+ public String toString() {
+ return name() + " in " + method.toString() +
+ "@" + scopeStart.toString();
+ }
+}