mirror of
https://github.com/vlang/v.git
synced 2023-08-10 21:13:21 +03:00
regex: speed optimization (#7471)
This commit is contained in:
parent
97855eca93
commit
b16052db95
@ -88,6 +88,7 @@ fn utf8util_char_len(b byte) int {
|
||||
|
||||
// get_char get a char from position i and return an u32 with the unicode code
|
||||
[inline]
|
||||
[direct_array_access]
|
||||
fn (re RE) get_char(in_txt string, i int) (u32,int) {
|
||||
ini := unsafe {in_txt.str[i]}
|
||||
// ascii 8 bit
|
||||
@ -107,6 +108,7 @@ fn (re RE) get_char(in_txt string, i int) (u32,int) {
|
||||
|
||||
// get_charb get a char from position i and return an u32 with the unicode code
|
||||
[inline]
|
||||
[direct_array_access]
|
||||
fn (re RE) get_charb(in_txt byteptr, i int) (u32,int) {
|
||||
// ascii 8 bit
|
||||
if (re.flag & f_bin) !=0 || unsafe {in_txt[i]} & 0x80 == 0 {
|
||||
@ -297,6 +299,7 @@ pub
|
||||
struct RE {
|
||||
pub mut:
|
||||
prog []Token
|
||||
prog_len int // regex program len
|
||||
|
||||
// char classes storage
|
||||
cc []CharClass // char class list
|
||||
@ -323,12 +326,13 @@ pub mut:
|
||||
}
|
||||
|
||||
// Reset RE object
|
||||
//[inline]
|
||||
[inline]
|
||||
[direct_array_access]
|
||||
fn (mut re RE) reset(){
|
||||
re.cc_index = 0
|
||||
|
||||
mut i := 0
|
||||
for i < re.prog.len {
|
||||
for i < re.prog_len {
|
||||
re.prog[i].group_rep = 0 // clear repetition of the group
|
||||
re.prog[i].rep = 0 // clear repetition of the token
|
||||
i++
|
||||
@ -340,14 +344,18 @@ fn (mut re RE) reset(){
|
||||
}
|
||||
|
||||
// reset group_csave
|
||||
re.group_csave = []int{}
|
||||
if re.group_csave_flag == true {
|
||||
re.group_csave.clear() // = []int{}
|
||||
}
|
||||
}
|
||||
|
||||
// reset for search mode fail
|
||||
// gcc bug, dont use [inline] or go 5 time slower
|
||||
//[inline]
|
||||
[direct_array_access]
|
||||
fn (mut re RE) reset_src(){
|
||||
mut i := 0
|
||||
for i < re.prog.len {
|
||||
for i < re.prog_len {
|
||||
re.prog[i].group_rep = 0 // clear repetition of the group
|
||||
re.prog[i].rep = 0 // clear repetition of the token
|
||||
i++
|
||||
@ -1155,6 +1163,7 @@ fn (mut re RE) impl_compile(in_txt string) (int,int) {
|
||||
|
||||
// add end of the program
|
||||
re.prog[pc].ist = ist_prog_end
|
||||
re.prog_len = pc
|
||||
|
||||
// check for unbalanced groups
|
||||
if group_stack_index != -1 {
|
||||
@ -1467,7 +1476,7 @@ pub fn (re RE) get_query() string {
|
||||
* Groups saving utilities
|
||||
*
|
||||
******************************************************************************/
|
||||
[inline]
|
||||
[direct_array_access]
|
||||
fn (mut re RE) group_continuous_save(g_index int) {
|
||||
if re.group_csave_flag == true {
|
||||
// continuous save, save until we have space
|
||||
@ -1550,6 +1559,7 @@ pub mut:
|
||||
last_dot_pc int = -1 // last dot chat pc
|
||||
}
|
||||
|
||||
[direct_array_access]
|
||||
pub fn (mut re RE) match_base(in_txt byteptr, in_txt_len int ) (int,int) {
|
||||
// result status
|
||||
mut result := no_match_found // function return
|
||||
@ -1771,7 +1781,7 @@ pub fn (mut re RE) match_base(in_txt byteptr, in_txt_len int ) (int,int) {
|
||||
}
|
||||
|
||||
// ist_next, next instruction reseting its state
|
||||
if m_state == .ist_next {
|
||||
else if m_state == .ist_next {
|
||||
state.pc = state.pc + 1
|
||||
re.prog[state.pc].reset()
|
||||
// check if we are in the program bounds
|
||||
@ -1784,7 +1794,7 @@ pub fn (mut re RE) match_base(in_txt byteptr, in_txt_len int ) (int,int) {
|
||||
}
|
||||
|
||||
// ist_next_ks, next instruction keeping its state
|
||||
if m_state == .ist_next_ks {
|
||||
else if m_state == .ist_next_ks {
|
||||
state.pc = state.pc + 1
|
||||
// check if we are in the program bounds
|
||||
if state.pc < 0 || state.pc > re.prog.len {
|
||||
@ -1805,7 +1815,7 @@ pub fn (mut re RE) match_base(in_txt byteptr, in_txt_len int ) (int,int) {
|
||||
}
|
||||
|
||||
// check if stop
|
||||
if m_state == .stop {
|
||||
else if m_state == .stop {
|
||||
|
||||
// we are in search mode, don't exit until the end
|
||||
if ((re.flag & f_src) != 0) && (ist != ist_prog_end) {
|
||||
@ -1849,7 +1859,7 @@ pub fn (mut re RE) match_base(in_txt byteptr, in_txt_len int ) (int,int) {
|
||||
}
|
||||
|
||||
// ist_load
|
||||
if m_state == .ist_load {
|
||||
else if m_state == .ist_load {
|
||||
|
||||
// program end
|
||||
if ist == ist_prog_end {
|
||||
@ -2116,7 +2126,7 @@ pub fn (mut re RE) match_base(in_txt byteptr, in_txt_len int ) (int,int) {
|
||||
* Quantifier management
|
||||
***********************************/
|
||||
// ist_quant_ng => quantifier negative test on group
|
||||
if m_state == .ist_quant_ng {
|
||||
else if m_state == .ist_quant_ng {
|
||||
|
||||
// we are finished here
|
||||
if state.group_index < 0 {
|
||||
@ -2378,7 +2388,7 @@ pub fn (mut re RE) match_base(in_txt byteptr, in_txt_len int ) (int,int) {
|
||||
//
|
||||
// Matchers
|
||||
//
|
||||
|
||||
[direct_array_access]
|
||||
pub fn (mut re RE) match_string(in_txt string) (int,int) {
|
||||
|
||||
start, mut end := re.match_base(in_txt.str, in_txt.len + 1)
|
||||
@ -2406,6 +2416,7 @@ pub fn (mut re RE) match_string(in_txt string) (int,int) {
|
||||
//
|
||||
|
||||
// find try to find the first match in the input string
|
||||
[direct_array_access]
|
||||
pub fn (mut re RE) find(in_txt string) (int,int) {
|
||||
old_flag := re.flag
|
||||
|
||||
@ -2424,6 +2435,7 @@ pub fn (mut re RE) find(in_txt string) (int,int) {
|
||||
}
|
||||
|
||||
// find all the non overlapping occurrences of the match pattern
|
||||
[direct_array_access]
|
||||
pub fn (mut re RE) find_all(in_txt string) []int {
|
||||
mut i := 0
|
||||
mut res := []int{}
|
||||
|
Loading…
Reference in New Issue
Block a user