55 lines
826 B
C
55 lines
826 B
C
/*
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* Copyright (c) Camden Dixie O'Brien
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* SPDX-License-Identifier: AGPL-3.0-only
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*/
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#ifndef REGEX_H
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#define REGEX_H
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#include <stdbool.h>
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typedef struct {
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bool negated;
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int count, capacity;
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char *contents;
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} class_t;
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typedef enum {
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QUANTIFIER_NONE,
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QUANTIFIER_ZERO_OR_MORE,
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QUANTIFIER_ONE_OR_MORE,
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QUANTIFIER_ZERO_OR_ONE,
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} quantifier_t;
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typedef enum {
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TERM_TYPE_WILDCARD,
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TERM_TYPE_CLASS,
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TERM_TYPE_LITERAL,
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TERM_TYPE_REGEX,
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} term_type_t;
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struct _term;
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typedef struct {
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int len, capacity;
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struct _term *contents;
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} sequence_t;
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typedef struct _regex {
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sequence_t sequence;
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struct _regex *alternative;
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} regex_t;
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typedef struct _term {
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quantifier_t quantifier;
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term_type_t type;
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union {
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class_t class;
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char literal;
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regex_t regex;
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};
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} term_t;
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void regex_free_children(regex_t *r);
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#endif
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