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.InstructionList; 25 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.ClassGenerator; 26 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.ErrorMsg; 27 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.MethodGenerator; 28 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.Type; 29 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.TypeCheckError; 30 import java.util.List; 31 32 /** 33 * @author Jacek Ambroziak 34 * @author Santiago Pericas-Geertsen 35 */ 36 final class StringCall extends FunctionCall { 37 public StringCall(QName fname, List<Expression> arguments) { 38 super(fname, arguments); 39 } 40 41 public Type typeCheck(SymbolTable stable) throws TypeCheckError { 42 final int argc = argumentCount(); 43 if (argc > 1) { 44 ErrorMsg err = new ErrorMsg(ErrorMsg.ILLEGAL_ARG_ERR, this); 45 throw new TypeCheckError(err); 46 } 47 48 if (argc > 0) { 49 argument().typeCheck(stable); 50 } 51 return _type = Type.String; 52 } 53 54 public void translate(ClassGenerator classGen, MethodGenerator methodGen) { 55 final InstructionList il = methodGen.getInstructionList(); 56 Type targ; 57 58 if (argumentCount() == 0) { 59 il.append(methodGen.loadContextNode()); 60 targ = Type.Node; 61 } 62 else { 63 final Expression arg = argument(); 64 arg.translate(classGen, methodGen); 65 arg.startIterator(classGen, methodGen); 66 targ = arg.getType(); 67 } 68 69 if (!targ.identicalTo(Type.String)) { 70 targ.translateTo(classGen, methodGen, Type.String); 71 } 72 } 73 }