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// Copyright (C) 2018-2020 Internet Systems Consortium, Inc. ("ISC")
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
#include <config.h>
#include <cc/stamped_value.h>
#include <exceptions/exceptions.h>
#include <boost/lexical_cast.hpp>
namespace isc {
namespace data {
StampedValue::StampedValue(const std::string& name)
: StampedElement(), name_(name), value_() {
}
StampedValue::StampedValue(const std::string& name, const ElementPtr& value)
: StampedElement(), name_(name), value_(value) {
validateConstruct();
}
StampedValue::StampedValue(const std::string& name, const std::string& value)
: StampedElement(), name_(name), value_(Element::create(value)) {
validateConstruct();
}
StampedValuePtr
StampedValue::create(const std::string& name) {
return (StampedValuePtr(new StampedValue(name)));
}
StampedValuePtr
StampedValue::create(const std::string& name, const ElementPtr& value) {
return (StampedValuePtr(new StampedValue(name, value)));
}
StampedValuePtr
StampedValue::create(const std::string& name, const std::string& value) {
return (StampedValuePtr(new StampedValue(name, value)));
}
StampedValuePtr
StampedValue::create(const std::string& name, const std::string& value,
Element::types parameter_type) {
StampedValuePtr stamped_value;
try {
switch (parameter_type) {
case Element::string:
stamped_value = StampedValue::create(name, value);
break;
case Element::integer:
stamped_value = StampedValue::create(name,
Element::create(boost::lexical_cast<int64_t>(value)));
break;
case Element::boolean:
// We only allow "1" and "0" as input to this function.
if ((value != "0") && (value != "1")) {
isc_throw(BadValue, "StampedValue: invalid value " << value
<< " specified as boolean. Expected \"0\" or \"1\"");
}
stamped_value = StampedValue::create(name,
Element::create((value == "0") ? false : true));
break;
case Element::real:
stamped_value = StampedValue::create(name,
Element::create(boost::lexical_cast<double>(value)));
break;
default:
// Invalid data type provided as argument.
isc_throw(TypeError, "StampedValue: unsupported type '"
<< Element::typeToName(parameter_type)
<< " of the parameter '" << name);
}
} catch (const boost::bad_lexical_cast& ex) {
// Failed to cast the value to a given type.
isc_throw(BadValue, "StampedValue: the value of the parameter '"
<< Element::typeToName(parameter_type)
<< "' can't be converted to "
<< Element::typeToName(parameter_type)
<< " type");
}
return (stamped_value);
}
int
StampedValue::getType() const {
if (!value_) {
isc_throw(InvalidOperation, "StampedValue: attempt to retrieve the "
"type of the null value for the '" << name_
<< "' parameter");
}
return (value_->getType());
}
std::string
StampedValue::getValue() const {
validateAccess(Element::string);
try {
switch (static_cast<Element::types>(value_->getType())) {
case Element::string:
return (value_->stringValue());
case Element::integer:
return (boost::lexical_cast<std::string>(value_->intValue()));
case Element::boolean:
return (value_->boolValue() ? "1" : "0");
case Element::real:
{
std::string repr =
boost::lexical_cast<std::string>(value_->doubleValue());
if (repr.find_first_of('.') == std::string::npos) {
repr += ".0";
}
return (repr);
}
default:
// Impossible condition.
isc_throw(TypeError, "StampedValue: invalid type of the '"
<< name_ << "' parameter");
}
} catch (const boost::bad_lexical_cast& ex) {
isc_throw(BadValue, "StampedValue: unable to convert the value of "
"the parameter '" << name_ << "' to string");
}
// unreachable
return (value_->stringValue());
}
int64_t
StampedValue::getIntegerValue() const {
validateAccess(Element::integer);
return (value_->intValue());
}
bool
StampedValue::getBoolValue() const {
validateAccess(Element::boolean);
return (value_->boolValue());
}
double
StampedValue::getDoubleValue() const {
validateAccess(Element::real);
return (value_->doubleValue());
}
void
StampedValue::validateConstruct() const {
if (!value_) {
isc_throw(BadValue, "StampedValue: provided value of the '"
<< name_ << "' parameter is NULL");
}
if ((value_->getType() != Element::string) &&
(value_->getType() != Element::integer) &&
(value_->getType() != Element::boolean) &&
(value_->getType() != Element::real)) {
isc_throw(TypeError, "StampedValue: provided value of the '"
<< name_ << "' parameter has invalid type: "
<< Element::typeToName(static_cast<Element::types>(value_->getType())));
}
}
void
StampedValue::validateAccess(Element::types type) const {
if (!value_) {
isc_throw(InvalidOperation, "StampedValue: attempt to get null value "
"of the '" << name_ << "' parameter");
}
if ((type != Element::string) && (type != value_->getType())) {
isc_throw(TypeError, "StampedValue: attempt to access a '"
<< name_ << "' parameter as " << Element::typeToName(type)
<< ", but this parameter has "
<< Element::typeToName(static_cast<Element::types>(value_->getType()))
<< " type");
}
}
} // end of namespace isc::data
} // end of namespace isc
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