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'^' works
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anon
parent
ab00a0d894
commit
a206684b96
24
source/hl.h
24
source/hl.h
@ -71,10 +71,11 @@ extern token_t * new_token(const char * const word,
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// TODO: ALIGN PROPERLY...
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extern int token_fits(const token_t * const token,
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const char * const to,
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extern int token_fits(const token_t * const token,
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const char * const to,
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const int string_offset,
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int * match_offset);
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const bool is_start_of_line,
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int * match_offset);
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extern void render_string(const char * const string,
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const char * const mode);
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@ -232,6 +233,11 @@ token_t * new_token(const char * const word,
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return new_keyword_token(word, g);
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}
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case MATCH: {
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token_t * mt = (token_t*)malloc(sizeof(token_t));
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mt->hl = g;
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mt->t = MATCH;
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mt->syntax = regex_compile(word);
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append_token(mt);
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} break;
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case REGION: {
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} break;
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@ -244,14 +250,15 @@ token_t * new_token(const char * const word,
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// ### Highlighting ###
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// --------------------
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int token_fits(const token_t * const token,
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const char * const to,
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const int string_offset,
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int token_fits(const token_t * const token,
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const char * const to,
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const int string_offset,
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const bool is_start_of_line,
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int * match_offset) {
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UNUSED(match_offset);
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//return regex_match(pattern, to, string_offset, match_offset);
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return regex_match(token->syntax, to + string_offset);
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return regex_match(token->syntax, to, is_start_of_line, string_offset);
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}
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void render_string(const char * const string,
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@ -264,7 +271,8 @@ void render_string(const char * const string,
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for (; token_index < token_table.element_count; token_index++) {
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token_t * t = *(token_t**)vector_get(&token_table,
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token_index);
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f = token_fits(t, string, (int) (s - string), &offset);
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const bool is_start_of_line = (s == string) || (*s == '\n');
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f = token_fits(t, string, (int)(s - string), is_start_of_line, &offset);
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if (f) {
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break;
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}
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120
source/regex.c
120
source/regex.c
@ -24,7 +24,7 @@ bool is_magic(const char c) {
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if (is_quantifier(c)) {
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return true;
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}
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for (const char * s = "\\[]."; *s != '\00'; s++) {
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for (const char * s = "\\[].^"; *s != '\00'; s++) {
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if (*s == c) {
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return true;
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}
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@ -47,11 +47,18 @@ typedef struct {
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typedef struct {
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int in;
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int to;
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int width;
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} offshoot_t;
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typedef struct {
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bool * do_catch;
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bool * is_negative;
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// these might be obsolite but im leaving them for now
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bool * do_loop_hook;
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bool * do_follow_hook;
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bool * do_loop_shoot;
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bool * do_follow_shoot;
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// ---
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int * state;
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int * width;
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char * whitelist;
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@ -88,6 +95,9 @@ static int escape_1_to_1(const char c, compiler_state * cs) {
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case '.': {
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strcat(target_list, ".");
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} return 1;
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case '^': {
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strcat(target_list, "^");
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} return 1;
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case '=': {
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strcat(target_list, "=");
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} return 1;
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@ -365,7 +375,7 @@ void HOOK_ALL( int from,
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int to,
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compiler_state * cs) {
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int hook_to = (to == HALT_AND_CATCH_FIRE) ? -1 : ((*cs->state) + to);
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int hook_to = (to == HALT_AND_CATCH_FIRE) ? HALT_AND_CATCH_FIRE : ((*cs->state) + to);
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for (const char * s = str; *s != '\0'; s++) {
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@ -379,26 +389,39 @@ void HOOK_ALL( int from,
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}
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}
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void OFFSHOOT(int from,
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int to,
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compiler_state * cs) {
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void ABSOLUTE_OFFSHOOT(int from,
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int to,
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int width,
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compiler_state * cs) {
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offshoot_t * offshoot = malloc(sizeof(offshoot_t));
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offshoot->in = *cs->state + from;
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offshoot->to = *cs->state + to;
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offshoot->in = from;
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offshoot->to = to;
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offshoot->width = width;
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vector_push(&cs->regex->catch_table,
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&offshoot);
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}
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void OFFSHOOT(int from,
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int to,
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int width,
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compiler_state * cs) {
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ABSOLUTE_OFFSHOOT(*cs->state + from, *cs->state + to, width, cs);
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}
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regex_t * regex_compile(const char * const pattern) {
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regex_t * regex = (regex_t *)malloc(sizeof(regex_t));
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regex->str = strdup(pattern);
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vector_init(®ex->delta_table, sizeof(delta_t*), 0UL);
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vector_init(®ex->catch_table, sizeof(offshoot_t*), 0UL);
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int state = 0;
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int state = 2;
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bool do_catch;
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bool is_negative;
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bool do_loop_hook;
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bool do_follow_hook;
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bool do_loop_shoot;
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bool do_follow_shoot;
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int width;
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char whitelist[64];
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char blacklist[64];
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@ -416,14 +439,32 @@ regex_t * regex_compile(const char * const pattern) {
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for (const char * s = pattern; *s != '\00';) {
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// Reset the compiler
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assert(!is_quantifier(*pattern) && "Pattern starts with quantifier.");
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whitelist[0] = '\00';
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blacklist[0] = '\00';
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do_catch = false;
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is_negative = false;
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whitelist[0] = '\0';
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blacklist[0] = '\0';
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do_catch = false;
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is_negative = false;
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do_loop_hook = false;
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do_follow_hook = false;
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do_loop_shoot = false;
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do_follow_shoot = false;
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width = 1;
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// Translate char
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switch (*s) {
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case '^': {
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if (s == pattern) {
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ABSOLUTE_OFFSHOOT(0, 2, 0, &cs);
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ABSOLUTE_OFFSHOOT(1, HALT_AND_CATCH_FIRE, 0, &cs);
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}
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whitelist[0] = '\n';
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whitelist[1] = '\0';
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HOOK_ALL(0, whitelist, 0, &cs);
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if (s != pattern) {
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state += 1;
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}
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s += 1;
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goto long_continue;
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} break;
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case '.': {
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compile_dot(&cs);
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} break;
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@ -435,8 +476,8 @@ regex_t * regex_compile(const char * const pattern) {
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s += compile_range(s, &cs) - 1;
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} break;
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default: {
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whitelist[0] = *s;
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whitelist[1] = '\00';
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whitelist[0] = *s;
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whitelist[1] = '\0';
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} break;
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}
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@ -446,37 +487,38 @@ regex_t * regex_compile(const char * const pattern) {
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switch (*s) {
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case '=':
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case '?': {
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do_loop_hook = true;
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HOOK_ALL(0, whitelist, +1, &cs);
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if (do_catch || is_negative) {
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OFFSHOOT(0, +1, &cs);
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OFFSHOOT(0, +1, 1, &cs);
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}
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s += 1;
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} break;
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case '*': {
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HOOK_ALL(0, whitelist, 0, &cs);
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if (do_catch) {
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OFFSHOOT(0, +1, &cs);
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OFFSHOOT(0, +1, 1, &cs);
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} else if (is_negative) {
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OFFSHOOT(0, 0, &cs);
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OFFSHOOT(0, 0, 1, &cs);
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}
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s += 1;
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} break;
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case '+': {
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HOOK_ALL(0, whitelist, +1, &cs);
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if (do_catch || is_negative) {
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OFFSHOOT(0, +1, &cs);
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OFFSHOOT(0, +1, 1, &cs);
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}
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state += 1;
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HOOK_ALL(0, whitelist, 0, &cs);
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if (do_catch || is_negative) {
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OFFSHOOT(0, 0, &cs);
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OFFSHOOT(0, 0, 1, &cs);
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}
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s += 1;
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} break;
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default: { // Literal
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HOOK_ALL(0, whitelist, +1, &cs);
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if (do_catch || is_negative) {
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OFFSHOOT(0, +1, &cs);
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OFFSHOOT(0, +1, 1, &cs);
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}
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state += 1;
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} break;
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@ -489,6 +531,7 @@ regex_t * regex_compile(const char * const pattern) {
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filter_blacklist(whitelist, blacklist, filtered_blacklist);
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HOOK_ALL(0, filtered_blacklist, HALT_AND_CATCH_FIRE, &cs);
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}
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long_continue:
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}
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regex->accepting_state = state;
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@ -509,37 +552,40 @@ int regex_free(regex_t * const regex) {
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// -----------------
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// ### Searching ###
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// -----------------
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static bool catch_(const regex_t * const regex,
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static int catch_(const regex_t * const regex,
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int * const state) {
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for (size_t i = 0; i < regex->catch_table.element_count; i++){
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const offshoot_t * const offshoot = *(offshoot_t**)vector_get(®ex->catch_table, i);
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if (offshoot->in == *state) {
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*state = offshoot->to;
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return true;
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return offshoot->width;
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}
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}
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return false;
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return HALT_AND_CATCH_FIRE;
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}
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static int regex_assert(const regex_t * const regex,
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const char * const string,
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int state,
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int width) {
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for (const char * s = string; *s != '\00'; s++) {
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static int regex_assert(const regex_t * const regex,
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const char * const string,
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const int string_offset,
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int state,
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int width) { // XXX: im pretty sure this is actually redundant and the width should be calculated from string - s
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for (const char * s = (string + string_offset); *s != '\00';) {
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// delta
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for (size_t i = 0; i < regex->delta_table.element_count; i++) {
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const delta_t * const delta = *(delta_t**)vector_get(®ex->delta_table, i);
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if ((delta->in == state)
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&& (delta->input == *s)) {
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int r = regex_assert(regex, s + delta->width, delta->to, width + 1);
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int r = regex_assert(regex, string, (s - string) + delta->width, delta->to, width + 1);
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if(r){
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return r;
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}
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}
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}
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if (catch_(regex, &state)) {
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width += 1;
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const int catch_width = catch_(regex, &state);
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if ((catch_width != HALT_AND_CATCH_FIRE)
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&& (state != HALT_AND_CATCH_FIRE)) {
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s += catch_width;
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continue;
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}
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@ -549,8 +595,10 @@ static int regex_assert(const regex_t * const regex,
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return false;
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}
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int regex_match( regex_t * regex,
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const char * const string) {
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int regex_match( regex_t * regex,
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const char * const string,
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const bool is_start_of_string,
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const int string_offset) { // XXX: remove this useless piece of shit of a parameter nigger
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if (regex == NULL) {
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return false;
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}
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@ -558,11 +606,13 @@ int regex_match( regex_t * regex,
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return true;
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}
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return regex_assert(regex, string, 0, 0);
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const int initial_state = (int)(!is_start_of_string);
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return regex_assert(regex, string, string_offset, initial_state, 0);
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}
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bool regex_search( regex_t * regex,
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const char * const string) {
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return (bool)regex_match(regex, string);
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return (bool)regex_match(regex, string, true, 0);
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}
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@ -16,7 +16,7 @@ typedef struct {
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extern regex_t * regex_compile(const char * const pattern);
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extern int regex_free(regex_t * const regex);
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extern bool regex_search(regex_t * regex, const char * const string);
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extern int regex_match(regex_t * regex, const char * const string);
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extern int regex_match(regex_t * regex, const char * const string, const bool start_of_string, const int string_offset);
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extern bool is_magic(const char c);
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8
tests/carrot.input
Normal file
8
tests/carrot.input
Normal file
@ -0,0 +1,8 @@
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^
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^ ^
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^ ^ ^^
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^ ^^ ^3^ ^
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^
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^
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^
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^
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