/*

 * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.

 */

/*

 * 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.

 */

package com.sun.org.apache.xalan.internal.xsltc.compiler;

import com.sun.org.apache.bcel.internal.generic.ConstantPoolGen;

import com.sun.org.apache.bcel.internal.generic.INVOKEINTERFACE;

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.MethodGenerator;

import com.sun.org.apache.xalan.internal.xsltc.compiler.util.StringType;

import com.sun.org.apache.xalan.internal.xsltc.compiler.util.Type;

import com.sun.org.apache.xalan.internal.xsltc.compiler.util.TypeCheckError;

import java.util.List;

/**

 * @author Jacek Ambroziak

 * @author Santiago Pericas-Geertsen

 * @author Morten Jorgensen

 * @LastModified: Oct 2017

 */

final class UnparsedEntityUriCall extends FunctionCall {

    private Expression _entity;

    public UnparsedEntityUriCall(QName fname, List<Expression> arguments) {

        super(fname, arguments);

        _entity = argument();

    }

    public Type typeCheck(SymbolTable stable) throws TypeCheckError {

        final Type entity = _entity.typeCheck(stable);

        if (entity instanceof StringType == false) {

            _entity = new CastExpr(_entity, Type.String);

        }

        return _type = Type.String;

    }

    public void translate(ClassGenerator classGen, MethodGenerator methodGen) {

        final ConstantPoolGen cpg = classGen.getConstantPool();

        final InstructionList il = methodGen.getInstructionList();

        // Feck the this pointer on the stack...

        il.append(methodGen.loadDOM());

        // ...then the entity name...

        _entity.translate(classGen, methodGen);

        // ...to get the URI from the DOM object.

        il.append(new INVOKEINTERFACE(

                         cpg.addInterfaceMethodref(DOM_INTF,

                                                   GET_UNPARSED_ENTITY_URI,

                                                   GET_UNPARSED_ENTITY_URI_SIG),

                         2));

    }

}