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92 lines
2.7 KiB
C++
92 lines
2.7 KiB
C++
/**
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* Copyright (c) 2021, Timothy Stack
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* * Neither the name of Timothy Stack nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* @file logfmt.parser.hh
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*/
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#ifndef lnav_logfmt_parser_hh
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#define lnav_logfmt_parser_hh
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#include "base/intern_string.hh"
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#include "base/result.h"
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#include "mapbox/variant.hpp"
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namespace logfmt {
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class parser {
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public:
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explicit parser(string_fragment sf);
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struct end_of_input {};
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struct error {
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int e_offset;
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const std::string e_msg;
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};
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struct unquoted_value {
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string_fragment uv_value;
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};
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struct quoted_value {
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string_fragment qv_value;
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};
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struct bool_value {
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bool bv_value{false};
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string_fragment bv_str_value;
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};
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struct int_value {
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int64_t iv_value{0};
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string_fragment iv_str_value;
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};
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struct float_value {
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double fv_value{0};
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string_fragment fv_str_value;
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};
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using value_type = mapbox::util::variant<
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bool_value,
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int_value,
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float_value,
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unquoted_value,
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quoted_value
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>;
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using kvpair = std::pair<string_fragment, value_type>;
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using step_result = mapbox::util::variant<
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end_of_input,
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kvpair,
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error
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>;
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step_result step();
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private:
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string_fragment p_next_input;
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};
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}
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#endif
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