forked from KPGPMC/furlang
86 lines
2.1 KiB
C++
86 lines
2.1 KiB
C++
#ifndef FURC_FRONT_PARSER_HPP
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#define FURC_FRONT_PARSER_HPP
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#include "furc/ast/fwd.hpp"
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#include "furc/front/lexer.hpp"
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#include "furlang/arena.hpp"
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#include <vector>
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namespace furc {
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namespace front {
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/**
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* @brief Parser.
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*
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* Furlang's parser.
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*/
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class parser final {
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public:
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/**
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* @brief Construct a new parser from content.
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*
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* @param filename Filename for debugging.
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* @param content Content.
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*/
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parser(std::string_view filename, std::string_view content);
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/**
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* @brief Construct a new parser from file.
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*
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* Constructs a lexer with content read from file passed through \p filename.
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*
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* @param filename Name of the file.
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*/
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parser(std::string_view filename);
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~parser() = default;
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/**
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* @brief Move constructor.
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*/
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parser(parser&&) = default;
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parser(const parser&) = delete;
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/**
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* @brief Move constructor.
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*/
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parser& operator=(parser&&) = default;
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parser& operator=(const parser&) = delete;
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public:
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/**
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* @brief Returns a parsed program.
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*
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* @return Handle to an AST node of the program.
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*/
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ast::program_node_h parse() &;
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private:
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ast::declaration_node_h parse_declaration();
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ast::statement_node_h parse_statement();
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ast::expression_node_h parse_expression(std::uint32_t precedence = 16);
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ast::literal_node_h parse_literal();
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ast::expression_node_h parse_expression_primary();
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ast::expression_node_h parse_expression_unary(std::uint32_t precedence);
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ast::expression_node_h parse_expression_rhs(ast::expression_node_h&& init, std::uint32_t precedence);
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ast::body_h parse_body();
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private:
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static ast::node_handle<ast::node> error_handle(const token_r& result);
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private:
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token_r next_token();
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const token_r& peek_token();
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token_r eat_token(token_t type);
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private:
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std::string m_filename;
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std::string m_content;
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lexer m_lexer;
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furlang::arena m_arena;
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std::vector<token_r> m_peekBuffer;
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};
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} // namespace front
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} // namespace furc
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#endif // FURC_FRONT_PARSER_HPP
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