/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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: FormatNumberCall.java 468650 2006-10-28 07:03:30Z minchau $
*/
package org.apache.xalan.xsltc.compiler;
import java.util.Vector;
import org.apache.bcel.generic.ConstantPoolGen;
import org.apache.bcel.generic.INVOKESTATIC;
import org.apache.bcel.generic.INVOKEVIRTUAL;
import org.apache.bcel.generic.InstructionList;
import org.apache.bcel.generic.PUSH;
import org.apache.xalan.xsltc.compiler.util.ClassGenerator;
import org.apache.xalan.xsltc.compiler.util.MethodGenerator;
import org.apache.xalan.xsltc.compiler.util.RealType;
import org.apache.xalan.xsltc.compiler.util.StringType;
import org.apache.xalan.xsltc.compiler.util.Type;
import org.apache.xalan.xsltc.compiler.util.TypeCheckError;
/**
* @author Jacek Ambroziak
* @author Santiago Pericas-Geertsen
* @author Morten Jorgensen
*/
final class FormatNumberCall extends FunctionCall {
private Expression _value;
private Expression _format;
private Expression _name;
private QName _resolvedQName = null;
public FormatNumberCall(QName fname, Vector arguments) {
super(fname, arguments);
_value = argument(0);
_format = argument(1);
_name = argumentCount() == 3 ? argument(2) : null;
}
public Type typeCheck(SymbolTable stable) throws TypeCheckError {
// Inform stylesheet to instantiate a DecimalFormat object
getStylesheet().numberFormattingUsed();
final Type tvalue = _value.typeCheck(stable);
if (tvalue instanceof RealType == false) {
_value = new CastExpr(_value, Type.Real);
}
final Type tformat = _format.typeCheck(stable);
if (tformat instanceof StringType == false) {
_format = new CastExpr(_format, Type.String);
}
if (argumentCount() == 3) {
final Type tname = _name.typeCheck(stable);
if (_name instanceof LiteralExpr) {
final LiteralExpr literal = (LiteralExpr) _name;
_resolvedQName =
getParser().getQNameIgnoreDefaultNs(literal.getValue());
}
else if (tname instanceof StringType == false) {
_name = new CastExpr(_name, Type.String);
}
}
return _type = Type.String;
}
public void translate(ClassGenerator classGen, MethodGenerator methodGen) {
final ConstantPoolGen cpg = classGen.getConstantPool();
final InstructionList il = methodGen.getInstructionList();
_value.translate(classGen, methodGen);
_format.translate(classGen, methodGen);
final int fn3arg = cpg.addMethodref(BASIS_LIBRARY_CLASS,
"formatNumber",
"(DLjava/lang/String;"+
"Ljava/text/DecimalFormat;)"+
"Ljava/lang/String;");
final int get = cpg.addMethodref(TRANSLET_CLASS,
"getDecimalFormat",
"(Ljava/lang/String;)"+
"Ljava/text/DecimalFormat;");
il.append(classGen.loadTranslet());
if (_name == null) {
il.append(new PUSH(cpg, EMPTYSTRING));
}
else if (_resolvedQName != null) {
il.append(new PUSH(cpg, _resolvedQName.toString()));
}
else {
_name.translate(classGen, methodGen);
}
il.append(new INVOKEVIRTUAL(get));
il.append(new INVOKESTATIC(fn3arg));
}
}