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/*
* $Id: LiteralExpr.java,v 1.10 2010-11-01 04:34:16 joehw 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));
}
}