1 files changed, 118 insertions, 0 deletions
diff --git a/src/share/classes/com/sun/org/apache/xalan/internal/xsltc/compiler/Comment.java b/src/share/classes/com/sun/org/apache/xalan/internal/xsltc/compiler/Comment.java
new file mode 100644
index 0000000..0b25a45
--- /dev/null
+++ b/src/share/classes/com/sun/org/apache/xalan/internal/xsltc/compiler/Comment.java
@@ -0,0 +1,118 @@
+/*
+ * 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: Comment.java,v 1.2.4.1 2005/09/01 12:02:37 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.GETFIELD;
+import com.sun.org.apache.bcel.internal.generic.INVOKEINTERFACE;
+import com.sun.org.apache.bcel.internal.generic.INVOKEVIRTUAL;
+import com.sun.org.apache.bcel.internal.generic.PUSH;
+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.MethodGenerator;
+import com.sun.org.apache.xalan.internal.xsltc.compiler.util.Type;
+import com.sun.org.apache.xalan.internal.xsltc.compiler.util.TypeCheckError;
+
+/**
+ * @author Jacek Ambroziak
+ * @author Santiago Pericas-Geertsen
+ * @author Morten Jorgensen
+ */
+final class Comment extends Instruction {
+
+    public void parseContents(Parser parser) {
+        parseChildren(parser);
+    }
+
+    public Type typeCheck(SymbolTable stable) throws TypeCheckError {
+        typeCheckContents(stable);
+        return Type.String;
+    }
+
+    public void translate(ClassGenerator classGen, MethodGenerator methodGen) {
+        final ConstantPoolGen cpg = classGen.getConstantPool();
+        final InstructionList il = methodGen.getInstructionList();
+
+        // Shortcut for literal strings
+        Text rawText = null;
+        if (elementCount() == 1) {
+            Object content = elementAt(0);
+            if (content instanceof Text) {
+                rawText = (Text) content;
+            }
+        }
+
+        // If the content is literal text, call comment(char[],int,int) or
+        // comment(String), as appropriate.  Otherwise, use a
+        // StringValueHandler to gather the textual content of the xsl:comment
+        // and call comment(String) with the result.
+        if (rawText != null) {
+            il.append(methodGen.loadHandler());
+
+            if (rawText.canLoadAsArrayOffsetLength()) {
+                rawText.loadAsArrayOffsetLength(classGen, methodGen);
+                final int comment =
+                        cpg.addInterfaceMethodref(TRANSLET_OUTPUT_INTERFACE,
+                                                  "comment",
+                                                  "([CII)V");
+                il.append(new INVOKEINTERFACE(comment, 4));
+            } else {
+                il.append(new PUSH(cpg, rawText.getText()));
+                final int comment =
+                        cpg.addInterfaceMethodref(TRANSLET_OUTPUT_INTERFACE,
+                                                  "comment",
+                                                  "(" + STRING_SIG + ")V");
+                il.append(new INVOKEINTERFACE(comment, 2));
+            }
+        } else {
+            // Save the current handler base on the stack
+            il.append(methodGen.loadHandler());
+            il.append(DUP);             // first arg to "comment" call
+
+            // Get the translet's StringValueHandler
+            il.append(classGen.loadTranslet());
+            il.append(new GETFIELD(cpg.addFieldref(TRANSLET_CLASS,
+                                                   "stringValueHandler",
+                                                   STRING_VALUE_HANDLER_SIG)));
+            il.append(DUP);
+            il.append(methodGen.storeHandler());
+
+            // translate contents with substituted handler
+            translateContents(classGen, methodGen);
+
+            // get String out of the handler
+            il.append(new INVOKEVIRTUAL(cpg.addMethodref(STRING_VALUE_HANDLER,
+                                                         "getValue",
+                                                         "()" + STRING_SIG)));
+            // call "comment"
+            final int comment =
+                        cpg.addInterfaceMethodref(TRANSLET_OUTPUT_INTERFACE,
+                                                  "comment",
+                                                  "(" + STRING_SIG + ")V");
+            il.append(new INVOKEINTERFACE(comment, 2));
+            // Restore old handler base from stack
+            il.append(methodGen.storeHandler());
+        }
+    }
+}