From 68585faa42a81949f0fd8028fb7932fe3f18a0e7 Mon Sep 17 00:00:00 2001 From: anon Date: Thu, 24 Aug 2023 15:00:44 +0200 Subject: [PATCH] organization, syntax fixing --- source/regex.c | 62 ++++++++++++++++++++++++++++++++++------------------------ 1 file changed, 36 insertions(+), 26 deletions(-) diff --git a/source/regex.c b/source/regex.c index f0a5d00..af8b24a 100644 --- a/source/regex.c +++ b/source/regex.c @@ -7,17 +7,7 @@ #include #include -typedef struct { - int in; - char input; - int to; -} delta_t; - -typedef struct { - int in; - int to; -} offshoot_t; - +// ### Char tests ### static bool is_quantifier(const char c) { for (const char * s = "+*?"; *s != '\00'; s++) { if (*s == c) { @@ -40,6 +30,22 @@ bool is_magic(const char c) { } + +// ### Internal Types ### +typedef struct { + int in; + char input; + int to; +} delta_t; + +typedef struct { + int in; + int to; +} offshoot_t; + + + +// ### Regex creation/destruction ### static int escape_1_to_1(const char c, char * whitelist) { switch(c) { case 't': { @@ -209,6 +215,19 @@ static int compile_range(const char * const range, return ((s - range) + 1); } +static bool catch_(const regex_t * const regex, + int * const state) { + + for (int i = 0; i < regex->catch_table.element_size; i++){ + const offshoot_t * const offshoot = (vector_get(®ex->catch_table, i)); + if (offshoot->in == *state) { + *state = offshoot->to; + return true; + } + } + return false; +} + #define HALT_AND_CATCH_FIRE -1 #define HOOK_ALL(from, str, to) do { \ @@ -270,7 +289,7 @@ regex_t * regex_compile(const char * const pattern) { EAT(1); - // Quantifier + // Get quantifier switch (*s) { case '?': { HOOK_ALL(0, whitelist, +1); @@ -306,22 +325,13 @@ int regex_free(regex_t * const regex) { return 0; } -bool catch_(const regex_t * const regex, - int * const state) { - for (int i = 0; i < regex->catch_table.element_size; i++){ - const offshoot_t * const offshoot = (vector_get(®ex->catch_table, i)); - if (offshoot->in == *state) { - *state = offshoot->to; - return true; - } - } - return false; -} -bool regex_assert(const regex_t * const regex, - const char * const string, - int state) { +// ### Searching ### + +static bool regex_assert(const regex_t * const regex, + const char * const string, + int state) { for (const char * s = string; *s != '\00'; s++) { // delta