jaxp/src/com/sun/org/apache/xalan/internal/xsltc/compiler/LastCall.java
changeset 12457 c348e06f0e82
parent 6 7f561c08de6b
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jaxp/src/com/sun/org/apache/xalan/internal/xsltc/compiler/LastCall.java	Thu Apr 12 08:38:26 2012 -0700
@@ -0,0 +1,71 @@
+/*
+ * reserved comment block
+ * DO NOT REMOVE OR ALTER!
+ */
+/*
+ * Copyright 2001-2004 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: LastCall.java,v 1.2.4.1 2005/09/01 15:55:34 pvedula Exp $
+ */
+
+package com.sun.org.apache.xalan.internal.xsltc.compiler;
+
+import com.sun.org.apache.bcel.internal.generic.ConstantPoolGen;
+import com.sun.org.apache.bcel.internal.generic.ILOAD;
+import com.sun.org.apache.bcel.internal.generic.INVOKEINTERFACE;
+import com.sun.org.apache.bcel.internal.generic.InstructionList;
+import com.sun.org.apache.xalan.internal.xsltc.compiler.util.ClassGenerator;
+import com.sun.org.apache.xalan.internal.xsltc.compiler.util.CompareGenerator;
+import com.sun.org.apache.xalan.internal.xsltc.compiler.util.MethodGenerator;
+import com.sun.org.apache.xalan.internal.xsltc.compiler.util.TestGenerator;
+
+/**
+ * @author Jacek Ambroziak
+ * @author Santiago Pericas-Geertsen
+ */
+final class LastCall extends FunctionCall {
+
+    public LastCall(QName fname) {
+        super(fname);
+    }
+
+    public boolean hasPositionCall() {
+        return true;
+    }
+
+    public boolean hasLastCall() {
+        return true;
+    }
+
+    public void translate(ClassGenerator classGen, MethodGenerator methodGen) {
+        final InstructionList il = methodGen.getInstructionList();
+
+        if (methodGen instanceof CompareGenerator) {
+            il.append(((CompareGenerator)methodGen).loadLastNode());
+        }
+        else if (methodGen instanceof TestGenerator) {
+            il.append(new ILOAD(LAST_INDEX));
+        }
+        else {
+            final ConstantPoolGen cpg = classGen.getConstantPool();
+            final int getLast = cpg.addInterfaceMethodref(NODE_ITERATOR,
+                                                          "getLast",
+                                                          "()I");
+            il.append(methodGen.loadIterator());
+            il.append(new INVOKEINTERFACE(getLast, 1));
+        }
+    }
+}