Aryadev Chavali
f01d64b5f4
This removes the problem of possibly expensive copies occurring due to working with tokens produced from the lexer (that C++ just... does): now we hold pointers where the copy operator is a lot easier to use. I want expensive stuff to be done by me and for a reason: I want to be holding the shotgun.
97 lines
1.5 KiB
C++
97 lines
1.5 KiB
C++
/* Copyright (C) 2024 Aryadev Chavali
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* You may distribute and modify this code under the terms of the
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* GPLv2 license. You should have received a copy of the GPLv2
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* license with this file. If not, please write to:
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* aryadev@aryadevchavali.com.
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* Created: 2024-04-14
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* Author: Aryadev Chavali
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* Description: Lexer for assembly language
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*/
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#ifndef LEXER_HPP
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#define LEXER_HPP
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#include <ostream>
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#include <string>
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#include <tuple>
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#include <vector>
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enum class token_type_t
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{
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PP_CONST, // %const(<symbol>)...
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PP_USE, // %use <string>
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PP_END, // %end
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PP_REFERENCE, // $<symbol>
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GLOBAL,
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STAR,
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LITERAL_NUMBER,
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LITERAL_CHAR,
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LITERAL_STRING,
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NOOP,
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HALT,
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PUSH,
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POP,
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PUSH_REG,
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MOV,
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DUP,
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MALLOC,
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MALLOC_STACK,
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MSET,
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MSET_STACK,
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MGET,
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MGET_STACK,
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MDELETE,
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MSIZE,
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NOT,
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OR,
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AND,
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XOR,
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EQ,
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LT,
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LTE,
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GT,
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GTE,
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PLUS,
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SUB,
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MULT,
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PRINT,
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JUMP_ABS,
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JUMP_STACK,
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JUMP_IF,
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CALL,
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CALL_STACK,
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RET,
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SYMBOL,
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};
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const char *token_type_as_cstr(token_type_t type);
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struct token_t
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{
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token_type_t type;
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size_t column, line;
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std::string content;
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token_t();
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token_t(token_type_t, std::string, size_t col = 0, size_t line = 0);
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};
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std::ostream &operator<<(std::ostream &, token_t &);
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enum class lerr_t
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{
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OK = 0,
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INVALID_CHAR_LITERAL,
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INVALID_CHAR_LITERAL_ESCAPE_SEQUENCE,
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INVALID_STRING_LITERAL,
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INVALID_NUMBER_LITERAL,
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INVALID_PREPROCESSOR_DIRECTIVE,
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};
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const char *lerr_as_cstr(lerr_t);
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lerr_t tokenise_buffer(std::string_view, std::vector<token_t *> &);
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#endif
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