55 lines
839 B
C
55 lines
839 B
C
/* Copyright (c) 2024 Freya Murphy */
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#ifndef __LEX_H__
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#define __LEX_H__
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#include <mlimits.h>
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#include <stdio.h>
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#include <stdint.h>
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struct lexer {
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FILE *file;
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int peek;
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int x;
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int y;
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};
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enum token_type {
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TOK_IDENT,
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TOK_REG,
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TOK_LABEL,
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TOK_STRING,
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TOK_COMMA,
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TOK_EQUAL,
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TOK_LPAREN,
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TOK_RPAREN,
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TOK_NUMBER,
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TOK_EOF,
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TOK_NL,
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TOK_DIRECTIVE,
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};
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struct token {
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enum token_type type;
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union {
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int64_t number;
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char text[MAX_LEX_LENGTH];
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};
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int x;
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int y;
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};
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/* initalize a lexer */
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int lexer_init(const char *file, struct lexer *lexer);
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/* free the lxer */
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int lexer_free(struct lexer *lexer);
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/* lexes the next token, returns M_ERROR on error,
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* and TOK_EOF on EOF */
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int lexer_next(struct lexer *lexer, struct token *token);
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/* token type to string */
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char *token_str(enum token_type);
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#endif /* __LEX_H__ */
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