/*
* 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: LiteralExpr.java,v 1.2.4.1 2005/09/01 15:58:53 pvedula Exp $
*/
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.InstructionList;
import com.sun.org.apache.bcel.internal.generic.PUSH;
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.Type;
import com.sun.org.apache.xalan.internal.xsltc.compiler.util.TypeCheckError;
/**
* @author Jacek Ambroziak
* @author Santiago Pericas-Geertsen
*/
final class LiteralExpr extends Expression {
private final String _value;
private final String _namespace;
/**
* Creates a new literal expression node.
* @param value the literal expression content/value.
*/
public LiteralExpr(String value) {
_value = value;
_namespace = null;
}
/**
* Creates a new literal expression node.
* @param value the literal expression content/value.
* @param namespace the namespace in which the expression exists.
*/
public LiteralExpr(String value, String namespace) {
_value = value;
_namespace = namespace.equals(Constants.EMPTYSTRING) ? null : namespace;
}
public Type typeCheck(SymbolTable stable) throws TypeCheckError {
return _type = Type.String;
}
public String toString() {
return "literal-expr(" + _value + ')';
}
protected boolean contextDependent() {
return false;
}
protected String getValue() {
return _value;
}
protected String getNamespace() {
return _namespace;
}
public void translate(ClassGenerator classGen, MethodGenerator methodGen) {
final ConstantPoolGen cpg = classGen.getConstantPool();
final InstructionList il = methodGen.getInstructionList();
il.append(new PUSH(cpg, _value));
}
}