agent/parser_context.h

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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/.
 
#ifndef PARSER_CONTEXT_H
#define PARSER_CONTEXT_H
#include <string>
#include <map>
#include <vector>
#include <agent/agent_parser.h>
#include <agent/parser_context_decl.h>
#include <exceptions/exceptions.h>
 
// Tell Flex the lexer's prototype ...
#define YY_DECL isc::agent::AgentParser::symbol_type agent_lex (ParserContext& driver)
 
// ... and declare it for the parser's sake.
YY_DECL;
 
namespace isc {
namespace agent {
 
class ParserContext
{
public:
 
    typedef enum {
        PARSER_JSON,
 
        PARSER_AGENT,
 
        PARSER_SUB_AGENT
    } ParserType;
 
    ParserContext();
 
    virtual ~ParserContext();
 
    std::vector<isc::data::ElementPtr> stack_;
 
    void scanStringBegin(const std::string& str, ParserType type);
 
    void scanFileBegin(FILE* f, const std::string& filename, ParserType type);
 
    void scanEnd();
 
    void includeFile(const std::string& filename);
 
    isc::data::ElementPtr parseString(const std::string& str,
                                      ParserType parser_type);
 
    isc::data::ElementPtr parseFile(const std::string& filename,
                                    ParserType parser_type);
 
    void error(const isc::agent::location& loc, const std::string& what);
 
    void error(const std::string& what);
 
    static void fatal(const std::string& what);
 
    isc::data::Element::Position loc2pos(isc::agent::location& loc);
 
    typedef enum {
        NO_KEYWORDS,
 
        CONFIG,
 
        AGENT,
 
        LOGGING,
 
        CONTROL_SOCKETS,
 
        SERVER,
 
        SOCKET_TYPE,
 
        HOOKS_LIBRARIES,
 
        LOGGERS,
 
        OUTPUT_OPTIONS
 
    } LexerContext;
 
    std::string file_;
 
    std::vector<std::string> files_;
 
    isc::agent::location loc_;
 
    std::vector<isc::agent::location> locs_;
 
    std::vector<struct yy_buffer_state*> states_;
 
    FILE* sfile_;
 
    std::vector<FILE*> sfiles_;
 
    LexerContext ctx_;
 
    void enter(const LexerContext& ctx);
 
    void leave();
 
    const std::string contextName();
 
 private:
    bool trace_scanning_;
 
    bool trace_parsing_;
 
    std::vector<LexerContext> cstack_;
 
    isc::data::ElementPtr parseCommon();
};
 
}; // end of isc::eval namespace
}; // end of isc namespace
 
#endif