VariableAccessorVar0.java
- /*
- ***** BEGIN LICENSE BLOCK *****
- * Version: EPL 1.0/GPL 2.0/LGPL 2.1
- *
- * The contents of this file are subject to the Eclipse Public
- * License Version 1.0 (the "License"); you may not use this file
- * except in compliance with the License. You may obtain a copy of
- * the License at http://www.eclipse.org/legal/epl-v10.html
- *
- * Software distributed under the License is distributed on an "AS
- * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
- * implied. See the License for the specific language governing
- * rights and limitations under the License.
- *
- * Alternatively, the contents of this file may be used under the terms of
- * either of the GNU General Public License Version 2 or later (the "GPL"),
- * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
- * in which case the provisions of the GPL or the LGPL are applicable instead
- * of those above. If you wish to allow use of your version of this file only
- * under the terms of either the GPL or the LGPL, and not to allow others to
- * use your version of this file under the terms of the EPL, indicate your
- * decision by deleting the provisions above and replace them with the notice
- * and other provisions required by the GPL or the LGPL. If you do not delete
- * the provisions above, a recipient may use your version of this file under
- * the terms of any one of the EPL, the GPL or the LGPL.
- ***** END LICENSE BLOCK *****/
- package org.jruby.runtime.ivars;
- import org.jruby.RubyBasicObject;
- import org.jruby.RubyClass;
- import org.jruby.RubyObjectVar0;
- /**
- * A variable accessor that accesses a var0 field directly;
- */
- public class VariableAccessorVar0 extends FieldVariableAccessor {
- /**
- * Construct a new StampedVariableAccessor for the given "real" class,
- * variable name, variable index, and class ID.
- *
- * @param realClass the "real" class
- * @param name the variable's name
- * @param index the variable's index
- * @param classId the class's ID
- */
- public VariableAccessorVar0(RubyClass realClass, String name, int index, int classId) {
- super(realClass, name, index, classId, 0);
- }
- /**
- * Retrieve the variable's value from the given object.
- *
- * @param object the object from which to retrieve this variable
- * @return the variable's value
- */
- public Object get(Object object) {
- return ((RubyObjectVar0)object).var0;
- }
- /**
- * Set this variable into the given object using Unsafe to ensure
- * safe updating of the variable table.
- *
- * @param object the object into which to set this variable
- * @param value the variable's value
- */
- public void set(Object object, Object value) {
- ((RubyBasicObject)object).ensureInstanceVariablesSettable();
- setVariable((RubyBasicObject)object, realClass, index, value);
- }
-
- /**
- * Set the given variable index into the specified object. The "real" class
- * and index are pass in to provide functional access. This version checks
- * if self has been frozen before proceeding to set the variable.
- *
- * @param self the object into which to set the variable
- * @param realClass the "real" class for the object
- * @param index the index of the variable
- * @param value the variable's value
- */
- public static void setVariableChecked(RubyBasicObject self, RubyClass realClass, int index, Object value) {
- self.ensureInstanceVariablesSettable();
- setVariable(self, realClass, index, value);
- }
-
- /**
- * Set the given variable index into the specified object. The "real" class
- * and index are pass in to provide functional access.
- *
- * @param self the object into which to set the variable
- * @param realClass the "real" class for the object
- * @param index the index of the variable
- * @param value the variable's value
- */
- public static void setVariable(RubyBasicObject self, RubyClass realClass, int index, Object value) {
- ((RubyObjectVar0)self).var0 = value;
- }
- }