86 lines
3.0 KiB
C++
86 lines
3.0 KiB
C++
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// Copyright 2023 xensik. All rights reserved.
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//
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// Use of this source code is governed by a GNU GPLv3 license
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// that can be found in the LICENSE file.
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#pragma once
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#include "misc/types.hpp"
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#include "lexer.hpp"
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namespace xsk::gsc
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{
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class preprocessor
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{
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context const* ctx_;
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std::stack<lexer> lexer_;
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std::stack<directive> indents_;
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std::vector<std::string> includes_;
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std::unordered_map<std::string_view, directive::kind> directives_;
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std::unordered_map<std::string, define> defines_;
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std::set<std::string> reject_;
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std::deque<token> tokens_;
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std::vector<token> expr_;
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usize curr_expr_;
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u32 expand_;
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u32 skip_;
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public:
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preprocessor(context const* ctx, std::string const& name, char const* data, usize size);
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auto process() -> token;
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auto push_header(std::string const& file) -> void;
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auto pop_header() -> void;
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auto ban_header(location const& loc) -> void;
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private:
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auto skip_line() -> void;
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auto next_token() -> token;
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auto read_token() -> token;
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auto read_directive(token& tok) -> void;
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auto read_directive_if(token& tok) -> void;
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auto read_directive_ifdef(token& tok) -> void;
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auto read_directive_ifndef(token& tok) -> void;
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auto read_directive_elif(token& tok) -> void;
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auto read_directive_elifdef(token& tok) -> void;
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auto read_directive_elifndef(token& tok) -> void;
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auto read_directive_else(token& tok) -> void;
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auto read_directive_endif(token& tok) -> void;
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auto read_directive_define(token& tok) -> void;
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auto read_directive_undef(token& tok) -> void;
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auto read_directive_pragma(token& tok) -> void;
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auto read_directive_warning(token& tok) -> void;
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auto read_directive_error(token& tok) -> void;
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auto read_directive_line(token& tok) -> void;
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auto read_directive_include(token& hash, token& name) -> void;
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auto read_directive_inline(token& hash, token& name) -> void;
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auto read_directive_usingtree(token& hash, token& name) -> void;
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auto read_hashtoken(token& hash) -> void;
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auto read_hashtoken_animtree(token& hash, token& name) -> void;
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auto expand(token& tok, define& def) -> void;
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auto expect(token& tok, token::kind expected, spacing space = spacing::none) -> void;
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auto evaluate() -> bool;
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auto eval_next() -> token&;
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auto eval_peek() -> token&;
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auto eval_prev() -> token&;
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auto eval_atend() -> bool;
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auto eval_check(token::kind type) -> bool;
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auto eval_match(token::kind type) -> bool;
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auto eval_consume(token::kind type, std::string_view msg);
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auto eval_expr() -> i32;
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auto eval_expr_or() -> i32;
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auto eval_expr_and() -> i32;
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auto eval_expr_bwor() -> i32;
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auto eval_expr_bwexor() -> i32;
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auto eval_expr_bwand() -> i32;
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auto eval_expr_eq() -> i32;
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auto eval_expr_lge() -> i32;
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auto eval_expr_shift() -> i32;
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auto eval_expr_add() -> i32;
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auto eval_expr_factor() -> i32;
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auto eval_expr_unary() -> i32;
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auto eval_expr_primary() -> i32;
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};
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} // namespace xsk::gsc
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