1 /*

     2  * reserved comment block

     3  * DO NOT REMOVE OR ALTER!

     4  */

     5 /*

     6  * Copyright 2001-2004 The Apache Software Foundation.

     7  *

     8  * Licensed under the Apache License, Version 2.0 (the "License");

     9  * you may not use this file except in compliance with the License.

    10  * You may obtain a copy of the License at

    11  *

    12  *     http://www.apache.org/licenses/LICENSE-2.0

    13  *

    14  * Unless required by applicable law or agreed to in writing, software

    15  * distributed under the License is distributed on an "AS IS" BASIS,

    16  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

    17  * See the License for the specific language governing permissions and

    18  * limitations under the License.

    19  */

    20 /*

    21  * $Id: TopLevelElement.java,v 1.5 2005/09/28 13:48:17 pvedula Exp $

    22  */

    23 

    24 package com.sun.org.apache.xalan.internal.xsltc.compiler;

    25 

    26 import java.util.Vector;

    27 

    28 import com.sun.org.apache.bcel.internal.generic.InstructionList;

    29 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.ClassGenerator;

    30 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.ErrorMsg;

    31 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.MethodGenerator;

    32 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.Type;

    33 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.TypeCheckError;

    34 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.Util;

    35 

    36 class TopLevelElement extends SyntaxTreeNode {

    37 

    38     /*

    39      * List of dependencies with other variables, parameters or

    40      * keys defined at the top level.

    41      */

    42     protected Vector _dependencies = null;

    43 

    44     /**

    45      * Type check all the children of this node.

    46      */

    47     public Type typeCheck(SymbolTable stable) throws TypeCheckError {

    48         return typeCheckContents(stable);

    49     }

    50 

    51     /**

    52      * Translate this node into JVM bytecodes.

    53      */

    54     public void translate(ClassGenerator classGen, MethodGenerator methodGen) {

    55         ErrorMsg msg = new ErrorMsg(ErrorMsg.NOT_IMPLEMENTED_ERR,

    56                                     getClass(), this);

    57         getParser().reportError(FATAL, msg);

    58     }

    59 

    60     /**

    61      * Translate this node into a fresh instruction list.

    62      * The original instruction list is saved and restored.

    63      */

    64     public InstructionList compile(ClassGenerator classGen,

    65                                    MethodGenerator methodGen) {

    66         final InstructionList result, save = methodGen.getInstructionList();

    67         methodGen.setInstructionList(result = new InstructionList());

    68         translate(classGen, methodGen);

    69         methodGen.setInstructionList(save);

    70         return result;

    71     }

    72 

    73     public void display(int indent) {

    74         indent(indent);

    75         Util.println("TopLevelElement");

    76         displayContents(indent + IndentIncrement);

    77     }

    78 

    79     /**

    80      * Add a dependency with other top-level elements like

    81      * variables, parameters or keys.

    82      */

    83     public void addDependency(TopLevelElement other) {

    84         if (_dependencies == null) {

    85             _dependencies = new Vector();

    86         }

    87         if (!_dependencies.contains(other)) {

    88             _dependencies.addElement(other);

    89         }

    90     }

    91 

    92     /**

    93      * Get the list of dependencies with other top-level elements

    94      * like variables, parameteres or keys.

    95      */

    96     public Vector getDependencies() {

    97         return _dependencies;

    98     }

    99 

   100 }