Aryadev Chavali
062ed12278
This C++ rewrite allows me to rewrite the actual API of the system. In particular, I'm no longer restricting myself to just using enums then figuring out a way to get proper error logging later down the line (through tracking tokens in the buffer internally, for example). Instead I can now design error structures which hold references to the token they occurred on as well as possible lexical errors (if they're a FILE_LEXICAL_ERROR which occurs due to the ~%USE~ macro). This means it's a lot easier to write error logging now at the top level.
58 lines
1.3 KiB
C++
58 lines
1.3 KiB
C++
/* Copyright (C) 2024 Aryadev Chavali
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* You may distribute and modify this code under the terms of the GPLv2
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* license. You should have received a copy of the GPLv2 license with
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* this file. If not, please write to: aryadev@aryadevchavali.com.
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* Created: 2024-04-14
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* Author: Aryadev Chavali
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* Description: Preprocessor which occurs after lexing before parsing.
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*/
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#ifndef PREPROCESSER_HPP
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#define PREPROCESSER_HPP
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#include <ostream>
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#include <tuple>
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#include "./lexer.hpp"
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enum pp_err_type_t
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{
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OK = 0,
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EXPECTED_NAME,
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EXPECTED_STRING,
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EXPECTED_END,
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FILE_NONEXISTENT,
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FILE_PARSE_ERROR,
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UNKNOWN_NAME,
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};
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struct pp_err_t
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{
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const token_t *reference;
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pp_err_type_t type;
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lerr_t lerr;
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pp_err_t(pp_err_type_t);
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pp_err_t(pp_err_type_t, const token_t *);
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pp_err_t(pp_err_type_t, const token_t *, lerr_t);
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};
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std::ostream &operator<<(std::ostream &, pp_err_t &);
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std::pair<std::vector<token_t *>, pp_err_t>
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preprocesser(std::vector<token_t *> &);
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std::pair<std::vector<token_t *>, pp_err_t>
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preprocess_const_blocks(std::vector<token_t *> &);
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std::pair<std::vector<token_t *>, pp_err_t>
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preprocess_use_blocks(std::vector<token_t *> &);
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// TODO: Implement this
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std::pair<std::vector<token_t *>, pp_err_t>
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preprocess_macro_blocks(std::vector<token_t *> &);
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#endif
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