/**
*
*/
public void init(TypeTable typetab, ParameterTable paramtab, ErrorMsg errorMsg)
{
this.symtab = new SymbolTable();
this.typeNames = new SymbolTable();
this.vartab = new VariableTable(errorMsg);
this.typetab = typetab;
this.paramtab = paramtab;
this.errorMsg = errorMsg;
}