1/*
2 * reserved comment block
3 * DO NOT REMOVE OR ALTER!
4 */
5/*
6 * Licensed to the Apache Software Foundation (ASF) under one or more
7 * contributor license agreements.  See the NOTICE file distributed with
8 * this work for additional information regarding copyright ownership.
9 * The ASF licenses this file to You under the Apache License, Version 2.0
10 * (the "License"); you may not use this file except in compliance with
11 * the License.  You may obtain a copy of the License at
12 *
13 *      http://www.apache.org/licenses/LICENSE-2.0
14 *
15 * Unless required by applicable law or agreed to in writing, software
16 * distributed under the License is distributed on an "AS IS" BASIS,
17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
18 * See the License for the specific language governing permissions and
19 * limitations under the License.
20 */
21
22package com.sun.org.apache.xalan.internal.xsltc.compiler;
23
24import java.util.Vector;
25
26import com.sun.org.apache.bcel.internal.generic.InstructionList;
27import com.sun.org.apache.xalan.internal.xsltc.compiler.util.ClassGenerator;
28import com.sun.org.apache.xalan.internal.xsltc.compiler.util.MethodGenerator;
29import com.sun.org.apache.xalan.internal.xsltc.compiler.util.Type;
30import com.sun.org.apache.xalan.internal.xsltc.compiler.util.TypeCheckError;
31
32/**
33 * @author Jacek Ambroziak
34 * @author Santiago Pericas-Geertsen
35 */
36final class NumberCall extends FunctionCall {
37
38    public NumberCall(QName fname, Vector arguments) {
39        super(fname, arguments);
40    }
41
42    public Type typeCheck(SymbolTable stable) throws TypeCheckError {
43        if (argumentCount() > 0) {
44            argument().typeCheck(stable);
45        }
46        return _type = Type.Real;
47    }
48
49    public void translate(ClassGenerator classGen, MethodGenerator methodGen) {
50        final InstructionList il = methodGen.getInstructionList();
51        Type targ;
52
53        if (argumentCount() == 0) {
54            il.append(methodGen.loadContextNode());
55            targ = Type.Node;
56        }
57        else {
58            final Expression arg = argument();
59            arg.translate(classGen, methodGen);
60            arg.startIterator(classGen, methodGen);
61            targ = arg.getType();
62        }
63
64        if (!targ.identicalTo(Type.Real)) {
65            targ.translateTo(classGen, methodGen, Type.Real);
66        }
67    }
68}
69