- /*
- * Copyright 2001-2004 The Apache Software Foundation.
- *
- * Licensed 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: StringCall.java,v 1.7 2004/02/16 22:24:29 minchau Exp $
- */
-
- package com.sun.org.apache.xalan.internal.xsltc.compiler;
-
- import java.util.Vector;
-
- import com.sun.org.apache.bcel.internal.generic.InstructionList;
- import com.sun.org.apache.xalan.internal.xsltc.compiler.util.ClassGenerator;
- import com.sun.org.apache.xalan.internal.xsltc.compiler.util.ErrorMsg;
- import com.sun.org.apache.xalan.internal.xsltc.compiler.util.MethodGenerator;
- import com.sun.org.apache.xalan.internal.xsltc.compiler.util.Type;
- import com.sun.org.apache.xalan.internal.xsltc.compiler.util.TypeCheckError;
-
- /**
- * @author Jacek Ambroziak
- * @author Santiago Pericas-Geertsen
- */
- final class StringCall extends FunctionCall {
- public StringCall(QName fname, Vector arguments) {
- super(fname, arguments);
- }
-
- public Type typeCheck(SymbolTable stable) throws TypeCheckError {
- final int argc = argumentCount();
- if (argc > 1) {
- ErrorMsg err = new ErrorMsg(ErrorMsg.ILLEGAL_ARG_ERR, this);
- throw new TypeCheckError(err);
- }
-
- if (argc > 0) {
- argument().typeCheck(stable);
- }
- return _type = Type.String;
- }
-
- public void translate(ClassGenerator classGen, MethodGenerator methodGen) {
- final InstructionList il = methodGen.getInstructionList();
- Type targ;
-
- if (argumentCount() == 0) {
- il.append(methodGen.loadContextNode());
- targ = Type.Node;
- }
- else {
- final Expression arg = argument();
- arg.translate(classGen, methodGen);
- arg.startIterator(classGen, methodGen);
- targ = arg.getType();
- }
-
- if (!targ.identicalTo(Type.String)) {
- targ.translateTo(classGen, methodGen, Type.String);
- }
- }
- }