1 files changed, 165 insertions, 0 deletions
diff --git a/src/share/classes/com/sun/org/apache/xpath/internal/operations/UnaryOperation.java b/src/share/classes/com/sun/org/apache/xpath/internal/operations/UnaryOperation.java
new file mode 100644
index 0000000..fd066a3
--- /dev/null
+++ b/src/share/classes/com/sun/org/apache/xpath/internal/operations/UnaryOperation.java
@@ -0,0 +1,165 @@
+/*
+ * reserved comment block
+ * DO NOT REMOVE OR ALTER!
+ */
+/*
+ * Copyright 1999-2004 The Apache Software Foundation.
+ *
+ * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/*
+ * $Id: UnaryOperation.java,v 1.2.4.1 2005/09/14 21:31:44 jeffsuttor Exp $
+ */
+package com.sun.org.apache.xpath.internal.operations;
+
+import com.sun.org.apache.xpath.internal.Expression;
+import com.sun.org.apache.xpath.internal.ExpressionOwner;
+import com.sun.org.apache.xpath.internal.XPathContext;
+import com.sun.org.apache.xpath.internal.XPathVisitor;
+import com.sun.org.apache.xpath.internal.objects.XObject;
+
+/**
+ * The unary operation base class.
+ */
+public abstract class UnaryOperation extends Expression implements ExpressionOwner
+{
+    static final long serialVersionUID = 6536083808424286166L;
+
+  /** The operand for the operation.
+   *  @serial */
+  protected Expression m_right;
+
+  /**
+   * This function is used to fixup variables from QNames to stack frame
+   * indexes at stylesheet build time.
+   * @param vars List of QNames that correspond to variables.  This list
+   * should be searched backwards for the first qualified name that
+   * corresponds to the variable reference qname.  The position of the
+   * QName in the vector from the start of the vector will be its position
+   * in the stack frame (but variables above the globalsTop value will need
+   * to be offset to the current stack frame).
+   */
+  public void fixupVariables(java.util.Vector vars, int globalsSize)
+  {
+    m_right.fixupVariables(vars, globalsSize);
+  }
+
+  /**
+   * Tell if this expression or it's subexpressions can traverse outside
+   * the current subtree.
+   *
+   * @return true if traversal outside the context node's subtree can occur.
+   */
+  public boolean canTraverseOutsideSubtree()
+  {
+
+    if (null != m_right && m_right.canTraverseOutsideSubtree())
+      return true;
+
+    return false;
+  }
+
+  /**
+   * Set the expression operand for the operation.
+   *
+   *
+   * @param r The expression operand to which the unary operation will be
+   *          applied.
+   */
+  public void setRight(Expression r)
+  {
+    m_right = r;
+    r.exprSetParent(this);
+  }
+
+  /**
+   * Execute the operand and apply the unary operation to the result.
+   *
+   *
+   * @param xctxt The runtime execution context.
+   *
+   * @return An XObject that represents the result of applying the unary
+   *         operation to the evaluated operand.
+   *
+   * @throws javax.xml.transform.TransformerException
+   */
+  public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException
+  {
+
+    return operate(m_right.execute(xctxt));
+  }
+
+  /**
+   * Apply the operation to two operands, and return the result.
+   *
+   *
+   * @param right non-null reference to the evaluated right operand.
+   *
+   * @return non-null reference to the XObject that represents the result of the operation.
+   *
+   * @throws javax.xml.transform.TransformerException
+   */
+  public abstract XObject operate(XObject right)
+    throws javax.xml.transform.TransformerException;
+
+  /** @return the operand of unary operation, as an Expression.
+   */
+  public Expression getOperand(){
+    return m_right;
+  }
+
+  /**
+   * @see com.sun.org.apache.xpath.internal.XPathVisitable#callVisitors(ExpressionOwner, XPathVisitor)
+   */
+  public void callVisitors(ExpressionOwner owner, XPathVisitor visitor)
+  {
+        if(visitor.visitUnaryOperation(owner, this))
+        {
+                m_right.callVisitors(this, visitor);
+        }
+  }
+
+
+  /**
+   * @see ExpressionOwner#getExpression()
+   */
+  public Expression getExpression()
+  {
+    return m_right;
+  }
+
+  /**
+   * @see ExpressionOwner#setExpression(Expression)
+   */
+  public void setExpression(Expression exp)
+  {
+        exp.exprSetParent(this);
+        m_right = exp;
+  }
+
+  /**
+   * @see Expression#deepEquals(Expression)
+   */
+  public boolean deepEquals(Expression expr)
+  {
+        if(!isSameClass(expr))
+                return false;
+
+        if(!m_right.deepEquals(((UnaryOperation)expr).m_right))
+                return false;
+
+        return true;
+  }
+
+
+}