57 lines
961 B
C
57 lines
961 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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} regex_class_t;
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typedef enum {
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REGEX_QUANTIFIER_NONE,
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REGEX_QUANTIFIER_STAR,
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REGEX_QUANTIFIER_PLUS,
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REGEX_QUANTIFIER_QMARK,
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} regex_quantifier_t;
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typedef enum {
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REGEX_TERM_WILDCARD,
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REGEX_TERM_CLASS,
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REGEX_TERM_LITERAL,
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REGEX_TERM_SUBEXPR,
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REGEX_TERM_EMPTY,
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} regex_term_type_t;
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struct _regex_term;
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typedef struct {
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int count, capacity;
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struct _regex_term *contents;
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} regex_sequence_t;
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typedef struct {
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int count, capacity;
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regex_sequence_t *contents;
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} regex_t;
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typedef struct _regex_term {
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regex_quantifier_t quantifier;
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regex_term_type_t type;
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union {
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regex_class_t class;
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char literal;
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regex_t subexpr;
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};
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} regex_term_t;
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void regex_free(const regex_t *t);
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void regex_class_free(const regex_class_t *c);
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#endif
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