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// Copyright (C) 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 <d2/d2_parser.h>
#include <d2/parser_context.h>
#include <exceptions/exceptions.h>
#include <cc/data.h>
#include <boost/lexical_cast.hpp>
#include <fstream>
#include <limits>
namespace isc {
namespace d2 {
D2ParserContext::D2ParserContext()
: sfile_(0), ctx_(NO_KEYWORD), trace_scanning_(false), trace_parsing_(false)
{
}
isc::data::ElementPtr
D2ParserContext::parseString(const std::string& str, ParserType parser_type)
{
scanStringBegin(str, parser_type);
return (parseCommon());
}
isc::data::ElementPtr
D2ParserContext::parseFile(const std::string& filename, ParserType parser_type) {
FILE* f = fopen(filename.c_str(), "r");
if (!f) {
isc_throw(D2ParseError, "Unable to open file " << filename);
}
scanFileBegin(f, filename, parser_type);
return (parseCommon());
}
isc::data::ElementPtr
D2ParserContext::parseCommon() {
isc::d2::D2Parser 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(D2ParseError, "Parser abort");
}
scanEnd();
}
catch (...) {
scanEnd();
throw;
}
if (stack_.size() == 1) {
return (stack_[0]);
} else {
isc_throw(D2ParseError, "Expected exactly one terminal Element expected, found "
<< stack_.size());
}
}
void
D2ParserContext::error(const isc::d2::location& loc, const std::string& what)
{
isc_throw(D2ParseError, loc << ": " << what);
}
void
D2ParserContext::error (const std::string& what)
{
isc_throw(D2ParseError, what);
}
void
D2ParserContext::fatal (const std::string& what)
{
isc_throw(D2ParseError, what);
}
isc::data::Element::Position
D2ParserContext::loc2pos(isc::d2::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
D2ParserContext::enter(const ParserContext& ctx)
{
cstack_.push_back(ctx_);
ctx_ = ctx;
}
void
D2ParserContext::leave()
{
if (cstack_.empty()) {
fatal("unbalanced syntactic context");
}
ctx_ = cstack_.back();
cstack_.pop_back();
}
const std::string
D2ParserContext::contextName()
{
switch (ctx_) {
case NO_KEYWORD:
return ("__no keyword__");
case CONFIG:
return ("toplevel");
case DHCPDDNS:
return ("DhcpDdns");
case TSIG_KEY:
return ("tsig-key");
case TSIG_KEYS:
return ("tsig-keys");
case ALGORITHM:
return("algorithm");
case DIGEST_BITS:
return("digest-bits");
case SECRET:
return("secret");
case FORWARD_DDNS:
return("forward-ddns");
case REVERSE_DDNS:
return("reverse-ddns");
case DDNS_DOMAIN:
return("ddns-domain");
case DDNS_DOMAINS:
return("ddns-domains");
case DNS_SERVER:
return("dns-server");
case DNS_SERVERS:
return("dns-servers");
case LOGGING:
return ("Logging");
case LOGGERS:
return ("loggers");
case OUTPUT_OPTIONS:
return ("output-options");
case NCR_PROTOCOL:
return ("ncr-protocol");
case NCR_FORMAT:
return ("ncr-format");
default:
return ("__unknown__");
}
}
};
};
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