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dedup dedup

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Yaossg 2025-04-11 18:19:39 +08:00
parent ab04acdf53
commit 098a36427e
1 changed files with 17 additions and 31 deletions
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48
boot.c
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@ -286,24 +286,6 @@ int parse_string() {
return string_lut_size++; return string_lut_size++;
} }
void rewind_string(int new_data) {
string_offset = string_lut[token_data];
token_data = new_data;
--string_lut_size;
}
void dedup_string() {
int last_string = string_lut_size - 1;
char* latest = string_table + string_lut[last_string];
for (int i = 0; i < last_string; i++) {
char* candidate = string_table + string_lut[i];
if (streq(candidate, latest)) {
rewind_string(i);
return;
}
}
}
char id_table[ID_TABLE_SIZE]; char id_table[ID_TABLE_SIZE];
int id_offset; int id_offset;
int id_lut[ID_LUT_SIZE]; int id_lut[ID_LUT_SIZE];
@ -320,24 +302,27 @@ int parse_id(int ch) {
return id_lut_size++; return id_lut_size++;
} }
void rewind_id(int new_data) { void dedup(char* table, int* lut, int* lut_size, int* offset) {
id_offset = id_lut[token_data]; char* latest = table + lut[*lut_size - 1];
token_data = new_data; for (int i = 0; i < *lut_size - 1; i++) {
--id_lut_size; char* candidate = table + lut[i];
}
void dedup_id() {
int last_id = id_lut_size - 1;
char* latest = id_table + id_lut[last_id];
for (int i = 0; i < last_id; i++) {
char* candidate = id_table + id_lut[i];
if (streq(candidate, latest)) { if (streq(candidate, latest)) {
rewind_id(i); *offset = lut[token_data];
--*lut_size;
token_data = i;
return; return;
} }
} }
} }
void dedup_string() {
dedup(string_table, string_lut, &string_lut_size, &string_offset);
}
void dedup_id() {
dedup(id_table, id_lut, &id_lut_size, &id_offset);
}
void parse_id_like(int ch) { void parse_id_like(int ch) {
token_type = TOKEN_ID; token_type = TOKEN_ID;
token_data = parse_id(ch); token_data = parse_id(ch);
@ -370,7 +355,8 @@ void parse_id_like(int ch) {
token_type = TOKEN_ENUM; token_type = TOKEN_ENUM;
} }
if (token_type != TOKEN_ID) { if (token_type != TOKEN_ID) {
rewind_id(0); id_offset = id_lut[token_data];
--id_lut_size;
} else { } else {
dedup_id(); dedup_id();
} }