1 /*
   2  * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
   3  * @LastModified: Oct 2017
   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 
  22 package com.sun.org.apache.xalan.internal.xsltc.compiler;
  23 
  24 import com.sun.org.apache.bcel.internal.generic.ConstantPoolGen;
  25 import com.sun.org.apache.bcel.internal.generic.INVOKESTATIC;
  26 import com.sun.org.apache.bcel.internal.generic.INVOKEVIRTUAL;
  27 import com.sun.org.apache.bcel.internal.generic.InstructionList;
  28 import com.sun.org.apache.bcel.internal.generic.PUSH;
  29 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.ClassGenerator;
  30 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.MethodGenerator;
  31 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.RealType;
  32 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.StringType;
  33 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.Type;
  34 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.TypeCheckError;
  35 import java.util.List;
  36 
  37 /**
  38  * @author Jacek Ambroziak
  39  * @author Santiago Pericas-Geertsen
  40  * @author Morten Jorgensen

  41  */
  42 final class FormatNumberCall extends FunctionCall {
  43     private Expression _value;
  44     private Expression _format;
  45     private Expression _name;
  46     private QName      _resolvedQName = null;
  47 
  48     public FormatNumberCall(QName fname, List<Expression> arguments) {
  49         super(fname, arguments);
  50         _value = argument(0);
  51         _format = argument(1);
  52         _name = argumentCount() == 3 ? argument(2) : null;
  53     }
  54 
  55     public Type typeCheck(SymbolTable stable) throws TypeCheckError {
  56 
  57         // Inform stylesheet to instantiate a DecimalFormat object
  58         getStylesheet().numberFormattingUsed();
  59 
  60         final Type tvalue = _value.typeCheck(stable);
  61         if (tvalue instanceof RealType == false) {
  62             _value = new CastExpr(_value, Type.Real);
  63         }
  64         final Type tformat = _format.typeCheck(stable);
  65         if (tformat instanceof StringType == false) {
  66             _format = new CastExpr(_format, Type.String);
  67         }
  68         if (argumentCount() == 3) {
  69             final Type tname = _name.typeCheck(stable);
  70 
  71             if (_name instanceof LiteralExpr) {
  72                 final LiteralExpr literal = (LiteralExpr) _name;
  73                 _resolvedQName =
  74                     getParser().getQNameIgnoreDefaultNs(literal.getValue());
  75             }
  76             else if (tname instanceof StringType == false) {
  77                 _name = new CastExpr(_name, Type.String);
  78             }
  79         }
  80         return _type = Type.String;
  81     }
  82 
  83     public void translate(ClassGenerator classGen, MethodGenerator methodGen) {
  84         final ConstantPoolGen cpg = classGen.getConstantPool();
  85         final InstructionList il = methodGen.getInstructionList();
  86 
  87         _value.translate(classGen, methodGen);
  88         _format.translate(classGen, methodGen);
  89 
  90         final int fn3arg = cpg.addMethodref(BASIS_LIBRARY_CLASS,
  91                                             "formatNumber",
  92                                             "(DLjava/lang/String;"+
  93                                             "Ljava/text/DecimalFormat;)"+
  94                                             "Ljava/lang/String;");
  95         final int get = cpg.addMethodref(TRANSLET_CLASS,
  96                                          "getDecimalFormat",
  97                                          "(Ljava/lang/String;)"+
  98                                          "Ljava/text/DecimalFormat;");
  99 
 100         il.append(classGen.loadTranslet());
 101         if (_name == null) {
 102             il.append(new PUSH(cpg, EMPTYSTRING));
 103         }
 104         else if (_resolvedQName != null) {
 105             il.append(new PUSH(cpg, _resolvedQName.toString()));
 106         }
 107         else {
 108             _name.translate(classGen, methodGen);
 109         }
 110         il.append(new INVOKEVIRTUAL(get));
 111         il.append(new INVOKESTATIC(fn3arg));
 112     }
 113 }
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