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// Copyright (C) 2016-2017 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 <dhcp6/parser_context.h>
#include <dhcp6/dhcp6_parser.h>
#include <exceptions/exceptions.h>
#include <cc/data.h>
#include <boost/lexical_cast.hpp>
#include <fstream>
#include <limits>
namespace isc {
namespace dhcp {
Parser6Context::Parser6Context()
: ctx_(NO_KEYWORD), trace_scanning_(false), trace_parsing_(false)
{
}
Parser6Context::~Parser6Context()
{
}
isc::data::ElementPtr
Parser6Context::parseString(const std::string& str, ParserType parser_type)
{
scanStringBegin(str, parser_type);
return (parseCommon());
}
isc::data::ElementPtr
Parser6Context::parseFile(const std::string& filename, ParserType parser_type) {
FILE* f = fopen(filename.c_str(), "r");
if (!f) {
isc_throw(Dhcp6ParseError, "Unable to open file " << filename);
}
scanFileBegin(f, filename, parser_type);
return (parseCommon());
}
isc::data::ElementPtr
Parser6Context::parseCommon() {
isc::dhcp::Dhcp6Parser parser(*this);
// Uncomment this to get detailed parser logs.
// trace_parsing_ = true;
parser.set_debug_level(trace_parsing_);
try {
int res = parser.parse();
if (res != 0) {
isc_throw(Dhcp6ParseError, "Parser abort");
}
scanEnd();
}
catch (...) {
scanEnd();
throw;
}
if (stack_.size() == 1) {
return (stack_[0]);
} else {
isc_throw(Dhcp6ParseError, "Expected exactly one terminal Element expected, found "
<< stack_.size());
}
}
void
Parser6Context::error(const isc::dhcp::location& loc, const std::string& what)
{
isc_throw(Dhcp6ParseError, loc << ": " << what);
}
void
Parser6Context::error (const std::string& what)
{
isc_throw(Dhcp6ParseError, what);
}
void
Parser6Context::fatal (const std::string& what)
{
isc_throw(Dhcp6ParseError, what);
}
isc::data::Element::Position
Parser6Context::loc2pos(isc::dhcp::location& loc)
{
const std::string& file = *loc.begin.filename;
const uint32_t line = loc.begin.line;
const uint32_t pos = loc.begin.column;
return (isc::data::Element::Position(file, line, pos));
}
void
Parser6Context::enter(const ParserContext& ctx)
{
cstack_.push_back(ctx_);
ctx_ = ctx;
}
void
Parser6Context::leave()
{
#if 1
if (cstack_.empty()) {
fatal("unbalanced syntactic context");
}
#endif
ctx_ = cstack_.back();
cstack_.pop_back();
}
const std::string
Parser6Context::contextName()
{
switch (ctx_) {
case NO_KEYWORD:
return ("__no keyword__");
case CONFIG:
return ("toplevel");
case DHCP6:
return ("Dhcp6");
case LOGGING:
return ("Logging");
case INTERFACES_CONFIG:
return ("interfaces-config");
case LEASE_DATABASE:
return ("lease-database");
case HOSTS_DATABASE:
return ("hosts-database");
case MAC_SOURCES:
return ("mac-sources");
case HOST_RESERVATION_IDENTIFIERS:
return ("host-reservation-identifiers");
case HOOKS_LIBRARIES:
return ("hooks-librairies");
case SUBNET6:
return ("subnet6");
case OPTION_DEF:
return ("option-def");
case OPTION_DATA:
return ("option-data");
case CLIENT_CLASSES:
return ("client-classes");
case SERVER_ID:
return ("server-id");
case DUID_TYPE:
return ("duid-type");
case CONTROL_SOCKET:
return ("control-socket");
case POOLS:
return ("pools");
case PD_POOLS:
return ("pd-pools");
case RESERVATIONS:
return ("reservations");
case RELAY:
return ("relay");
case CLIENT_CLASS:
return ("client-class");
case LOGGERS:
return ("loggers");
case OUTPUT_OPTIONS:
return ("output-options");
default:
return ("__unknown__");
}
}
};
};
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