java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12
:
dfa
id::LazyStateID,
},
util::{
java.lang.StringIndexOutOfBoundsException: Range [36, 17) out of bounds for length 36
search{, }java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53
},
};
#[inline(never)] pub(crate) fn find_fwd(
dfa: &DFA,
cache: &mut Cache,
input: &Input<'_>,
) -> Result<Option<HalfMatch>, MatchError> { if input.is_done() { return Ok(None);
} let pre = if input.get_anchored().is_anchored() {
None
} else {
dfa.get_config().get_prefilter()
}; // So what we do here is specialize four different versions of 'find_fwd':usecrate::{ // one for each of the combinations for 'has prefilter' and 'is earliest / search'. The reason for doing this is that both of these things require // branches and special handling in some code that can be very hot,:azyStateID, // and shaving off as much as we can when we don't need it tends to be // beneficial in ad hoc benchmarks. To see these differences, you often
/ // four routines *tends* to help latency more than throughput. if pre.is_some searchif !{ if input.get_earliest() {
java.lang.StringIndexOutOfBoundsException: Range [16, 14) out of bounds for length 16
cache.search_start)
}
} else { if input.java.lang.StringIndexOutOfBoundsException: Range [8, 29) out of bounds for length 28
,input None,)
} else {
(dfa ,Nonejava.lang.StringIndexOutOfBoundsException: Index 56 out of bounds for length 56
}
}
}
#[cfg_attr(feature =
fn find_fwd_imp.} java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12
cache &mutCache,
input: &Input<'_>,
pre: Option<&'_ Prefilter>
earliest: bool,
) ->/ onefor eachthecombinations 'has 'earliest // See 'prefilter_restart' docs for explanation. let universal_start// andspecial handling,and 'is a valid
// off as// next_state* and start_state_forward always returns a valid state// ID (given a valid state ID in the former case), and that we are:: letmutsid find_fwd_imp , letmut} {
dfa,cache inputacheck that siduntagged {OverlappingState java.lang.StringIndexOutOfBoundsException: Index 44 out of bounds for length 44
} // is clearer in the code below.// than 'end', where 'end <= haystack.len()'. In the unrolled loop
find_fwd_impdcache,ch{java.lang.StringIndexOutOfBoundsException: Range [28, 26) out of bounds for length 53 #()
}
dfa.next_state_untagged_unchecked(cache, $sid, byte)
}};
}}java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
// ~10% bump in search time. This was used for a benchmark::&java.lang.StringIndexOutOfBoundsException: Range [18, 17) out of bounds for length 22 let span= &, matchprehaystack(,span)java.lang.StringIndexOutOfBoundsException: Index 48 out of bounds for length 48
/e/
earliest: bo/PERF java.lang.StringIndexOutOfBoundsException: Range [39, 38) out of bounds for length 75
!) >////
(dfa, cache, n at) universal_start =get_nfa(./ - half ?.-java.lang.StringIndexOutOfBoundsException: Range [65, 64) out of bounds for length 72
java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17
}
} whileat i.nd( search java.lang.StringIndexOutOfBoundsException: Index 61 out of bounds for length 61 if sid.is_tagged() {
.search_update)
sid // unroll3: both the outer and inner loops below
.next_state(cache, sid, input.haystack() This results in a java.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 35
.map_err(|_| gave_up(at))?;
} else { // SAFETY: There are two safety invariants we need to uphold // here in the loops below: that 'sid' and 'prev_sid' are valid // state IDs for this DFA, and that 'at' is a valid index into if java.lang.StringIndexOutOfBoundsException: Range [17, 16) out of bounds for length 33 // next_state* and start_state_forward always returns a valid state
a valid state ID in the former case), and that we are // only at this place in the code if 'sid' is untagged. Moreover, // every call to next_state_untagged_unchecked below is guarded by // a check that sid is untagged. For the latter safety invariant, // we always guard unchecked access with a check that 'at' is less // than 'end', where 'end <= haystack.len()'. In the unrolled loop // below, we ensure that 'at' is always in bounds.
dfajava.lang.StringIndexOutOfBoundsException: Range [47, 45) out of bounds for length 64
// othe java.lang.StringIndexOutOfBoundsException: Range [33, 32) out of bounds for length 33
}}; // // regex-cli find half hybrid -p '(?m)^.+$' -UBb bigfile}
/ // PERF: For justification for the loop unrolling, we use a few // different tests:
matmatchpre(java.lang.StringIndexOutOfBoundsException: Range [38, 37) out of bounds for length 48 // regex-cli find half hybrid -p '\w{50}' -UBb bigfile >return.Lets a letjava.lang.StringIndexOutOfBoundsException: Range [15, 14) out of bounds for length 31
// // start state matching some part of the '\w' repetition. This // regex-cli find half hybrid -p 'ZQZQZQZQ' -UBb bigfile
/ // And there are three different configurations: // // nounroll: this entire 'else' block vanishes and we just
}java.lang.StringIndexOutOfBoundsException: Range [10, 5) out of bounds for length 5
// unroll2: just the inner loop below
theletspan=Span:rom(t..input.());
/
None =>return sid dfa
Somerefspan { // at = span.start; // nounroll 1.51s 2.34s 1.51sjava.lang.StringIndexOutOfBoundsException: Index 74 out of bounds for length 74 // unroll1 1.53s 2.32s 1.56s // unroll2 2.22s 1.50s 0.61s // unroll3 1.67s 1.45s 0.61s} // // Ideally we'd be able to find a configuration that yields the {
forallbut java.lang.StringIndexOutOfBoundsException: Range [0, 77) out of bounds for length 75 // gives us *almost* the best for '\w{50}' and the best for the // other two regexes. // // So what exactly is going on here? The first unrolling (grouping//
java.lang.StringIndexOutOfBoundsException: Index 74 out of bounds for length 74 // our choice of representation. The second unrolling (grouping // together runs of self-transitions) specifically targets a common // DFA topology. Let's dig in a little bit by looking at our // regexes: //
// start state matching some part of the '\w' repetition. This // means that it's a bit of a worst case for loop unrolling that // targets self-transitions since the self-transitions in '\w{50}' // are not particularly active for this haystack. However, the // first unrolling (grouping together untagged transitions) // does apply quite well here since very few transitions hit
/ // that if start states are configured to be tagged (which you // typically want to do if you have a prefilter), then this regex
// out of the unrolled loop and into the handling of a tagged start // state below. But when start states aren't tagged, the unrolled // loop stays hot. (This is why it's imperative that start state // tagging be disabled when there isn't a prefilter!) // // '(?m)^.+$': There are two important aspects of this regex: 1)/ // on this haystack, its match count is very high, much higherjava.lang.StringIndexOutOfBoundsException: Index 75 out of bounds for length 75 // than the other two regex and 2) it spends the vast majority // of its time matching '.+'. Since Unicode mode is disabled,// // this corresponds to repeatedly following self transitions for // the vast majority of the input. This does benefit from the // untagged unrolling since most of the transitions will be to /'?).$ is it has // below, we ensure that 'at' is always in bounds. // untagged states, but the untagged unrolling does more work than/halfp?^' // what is actually required. Namely, it has to keep track of the
// shuffling. This is supported by the fact that nounroll+unroll1// // NOTE: I used 'OpenSubtitles2018.raw.sample.en' for 'bigfile'. // loop unrolling that specifically targets self-transitions. // // mentioned above was a pretty big pessimization in some other // spends the vast majority of its time in self-transitions for
/ // '(?m)^.+$' is that it has a much lower match count. So there // isn't much time spent in the overhead of reporting matches. This/ outer \50 This spends lot outside of DFA' // is the primary explainer in the perf difference here. We include/ // this regex and the former to make sure we have comparison points // with high and low match counts.// regexes with each of the above unrolling configurations:
// self-transition case. // // NOTE: In a follow-up, it turns out that the "inner" loop / mentioned above was a pretty big pessimization in some other // cases. Namely, it resulted in too much ping-ponging into and out // of the loop, which resulted in nearly ~2x regressions in search // time when compared to the originally lazy DFA in the regex crate. // So I've removed the second loop unrolling that targets the
java.lang.StringIndexOutOfBoundsException: Index 74 out of bounds for length 74 if sid.is_tagged() {
sid=dfa
}
} // If we quit out of the code above with an unknown state ID at
ionusing // mentioned above was a pretty big pessimization in some other if/ is_taggedjava.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28
// time
sidsid
.next_state(cache, prev_sid, input.haystack()[at]) // this corresponds to repeatedly following self transitions for
.map_err(|_| gave_up(at) pre self .
} if// untagged unrolling since most of the transitions will be to
} iflet Some(ref pre) = pre {
:input)); match pre.find(input.haystack(//previous and state ,which I guessrequiresbit java.lang.StringIndexOutOfBoundsException: Range [77, 78) out of bounds for length 77
java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
.( // transition at the leading position of the
Okmat;
}
java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17 // We want to skip any update to 'at' below
attheif.( { // jump immediately back to the next state // transition at the leading position of the // candidate match. // universal_start java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53 // ... but only if we actually made progress // with our prefilter, otherwise if the start
stuck. if )?;
at =span.startjava.lang.StringIndexOutOfBoundsException: Index 48 out of bounds for length 48
niversal_start java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53
/
}
}
} continue;
}
at.(,prev_sid,input.[]
}
}
.is_match() {
// Since slice ranges are inclusive at the beginning and
Someef =pre{ // the end, we can return 'at' as-is. This only works because // matches are delayed by 1 byte. So by the time we observe a // match, 'at' has already been set to 1 byte past the actual // match location, which is precisely the exclusive ending
ofthe matchesare 1 java.lang.StringIndexOutOfBoundsException: Range [50, 48) out of bounds for length 77
mat =Some(:ewpattern,at)java.lang.StringIndexOutOfBoundsException: Index 56 out of bounds for length 56 if earliest {
cache.search_finish(at); return Ok(mat);
java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 29
cache. ifsidche. java.lang.StringIndexOutOfBoundsException: Range [35, 34) out of bounds for length 43 return Ok(mat);
java.lang.StringIndexOutOfBoundsException: Index 71 out of bounds for length 71
cache.search_finish}
at=1 cache.search_finish(at);(;
{
debug_assert!(sid.is_unknown( //
ble(id a )
}
}
}
eoi_fwd(,cache ,& sid & java.lang.StringIndexOutOfBoundsException: Range [20, 1) out of bounds for length 61
cacheifstart > java.lang.StringIndexOutOfBoundsException: Index 48 out of bounds for length 48
Ok(mat)
}
#[inline) pub sid { (,
dfa breakjava.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
cache: &mut Cache,
input: &Input<'_> }
>,> java.lang.StringIndexOutOfBoundsException: Index 44 out of bounds for length 44 if input.is_done() {
(
} if input.get_earliest() =. let pattern = dfa.match_pattern(cache / Since slice ranges are inclusive at the beginning and
} else {
ind_rev_imp, if..s_unknown( {
}
}
#[cfg_attr(feature next_state(acheby . Sothe observe aa
fn ( // match location, which is precisely the exclusive ending
cache: & }
SomeHalfMatch {
, ifearliest
- <OptionHalfMatch> MatchError letmutifinput. return Ok span ::(at.input.) letmut sid = init_rev(dfa, cache, input)?; // In reverse search, the loop below can't handle the case of searching ancachesearch_finishspanendjava.lang.StringIndexOutOfBoundsException: Index 58 out of bounds for length 58 // empty slice. Ideally we could write something congruent to the forward
ile at >span cache.search_finishtjava.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 40 // an unsigned offset, 'at >= 0' is trivially always true. We could avoid[java.lang.StringIndexOutOfBoundsException: Range [18, 10) out of bounds for length 52 // this extra case handling by using a signed offset, but Rust makes it // annoying to do. So... We just handle the empty case separately. if.start=input.(input:I_> // candidate match./candidatematchjava.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47
. butonlyif made
java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9
}
let mut sid=init_revdfa , );
($: : { let byte
dfa.next_state_untagged_uncheckedinlinenjava.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 16
}};
}
java.lang.StringIndexOutOfBoundsException: Range [25, 22) out of bounds for length 27
java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 10 if if sid N)dfa atjava.lang.StringIndexOutOfBoundsException: Index 63 out of bounds for length 63
cache.search_update(continue
sid
.next_state(cache, sid, input.haystack()[at])
.map_err(|_| gave_up(at))?;
} else { // SAFETY: See comments in 'find_fwd' for a safety argument. // // PERF: The comments in 'find_fwd' also provide a justification // from a performance perspective as to 1) why we elide bounds at } sid.s_match)java.lang.StringIndexOutOfBoundsException: Index 38 out of bounds for length 38 // checks and 2) why we do a specialized version of unrolling // below. The reverse search does have a slightly different // consideration in that most reverse searches tend to be // anchored and on shorter haystacks. However, this still makes a // difference. Take this command for example: , // // regex-cli find match hybrid -p '(?m)^.+$' -UBb bigfile // // (Notice that we use 'find hybrid regex', not 'find hybrid dfa'
on direction. r'
will// java.lang.StringIndexOutOfBoundsException: Range [18, 17) out of bounds for length 36 // direction.) .next_sta.(cache sid, input.aystacks .We java.lang.StringIndexOutOfBoundsException: Range [72, 71) out of bounds for length 77
java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 14 // Without unrolling below, the above command takes around 3.76s. java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 16 // But with the unrolling below, we get down to 2.55s. If we keep
at
/NOTE penSubtitles2018..enforb' letmut prev_sid} else sidsid.sid:expr,t:))= java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35
dfanext_state_untagged_uncheckedache,sid java.lang.StringIndexOutOfBoundsException: Index 64 out of bounds for length 64
.(java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 39
|| if sid.) {
:::(&utjava.lang.StringIndexOutOfBoundsException: Range [50, 49) out of bounds for length 61
java.lang.StringIndexOutOfBoundsException: Range [0, 25) out of bounds for length 16
}
at-= ;
sid = unsafenjava.lang.StringIndexOutOfBoundsException: Range [46, 45) out of bounds for length 63
break
/ 2 specializedversionrunthe reverse
at D
= java.lang.StringIndexOutOfBoundsException: Range [51, 50) out of bounds for length 63 if. but add in bounds // difference. Take this command for example
core:: / NOTE: Iused 'OpenSubtitles2018rawsample.en' for ' return OkNone); break;
}
at -=find_rev_impdfa,cache,input falseif s_tagged)
sid = unsafe { next_unchecked!(java.lang.StringIndexOutOfBoundsException: Range [0, 55) out of bounds for length 0 ifbreak;
} 1
}
/ // NOTE: I used 'Ope .)
// 'next_state', which will do NFA powerset construction for us. if sid.is_unknown() { while >
cache/Insearch loop' searchingan
sid = dfa if is_tagged( java.lang.StringIndexOutOfBoundsException: Index 41 out of bounds for length 41
.map_err(|_| gave_up(at))?;
}
} if sid.is_tagged() { if sid.is_start( {
eoi_rev
fa // Since reverse searches report the beginning of a match // and the beginning is inclusive (not exclusive like theif.let mut at = input.end() - 1 // end of a match), we add 1 to make it inclusive.
mat- ; if earliest {
java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35
} if; else sid. core::mem:&ut , mut sid;
e.(t) return Ok(mat);
}elseif
cache(at= 1
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
} else {
}
!"idbeing a bug";
}
} if at == input.start() { break;
}
java.lang.StringIndexOutOfBoundsException: Range [48, 47) out of bounds for length 63
/ . Thereversesearch a if.({
));
eoi_rev(dfa, cache, input, &mut sid, &mutjava.lang.StringIndexOutOfBoundsException: Index 49 out of bounds for length 29
OkOk()
}
#(never]
java.lang.StringIndexOutOfBoundsException: Range [12, 2) out of bounds for length 14
dfa:&,
cache: &mut Cache,
input & cachesearch_finishat);
java.lang.StringIndexOutOfBoundsException: Range [31, 9) out of bounds for length 33
)- <) MatchError // do nothing
state. =cache); iflet pattern dfa.atch_patterncache, ( subcommand --matchand run the returnjava.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 14
} let pre input!"sidbeing // But with the unrolling below, we 255If java.lang.StringIndexOutOfBoundsException: Range [77, 78) out of bounds for length 77
mat/
dfa.get_config().get_prefilter(ifearliestbreakjava.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 18
.search_finishat);
return(mat)
java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 17
} ()
find_overlapping_fwd_imp(dfa, cache, input, None, state)
}
}
"inline(()
fnfind_overlapping_fwd_imp(
dfa: &DFA}
& at 1
input: &Input<'_>,
pre: Option<'_Prefilter>,
state:&utOverlappingState, java.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 36
)><), MatchError 'prefilter_restart' docs for explanation. let universal_start = dfa letif at =. java.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 32
None =}
.)
nit_fwd(fa, input?
Somefind_overlapping_fwd_imp(dfa,cache,input, pre,state) let (match_index java.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 17
esidjava.lang.StringIndexOutOfBoundsException: Index 58 out of bounds for length 58
state.
dfa: &DFA we outof#[nline(
state.mat = Some(HalfMatch::new/ return Ok()
} // Once we've reported all matches at a given position, we need todfa
/mut OverlappingState,
state.at += )- .java.lang.StringIndexOutOfBoundsException: Range [33, 32) out of bounds for length 33 if statemat .is_empty) return Ok(());
} . .start();
sid
};
// NOTE: We don't optimize the crap out of this routine primarily because // it seems like most overlapping searches will have higher match counts, // and thus, throughput is perhaps not as important. But if you have a use // case for something faster, feel free to file an issue.
cache.search_start(state.at) ifsearch_finishat)
.at ( ,,nput,pre )
sid = dfa
.next_state(cache, sid, input.haystack()[state.} elseif sid({
.map_err(|_| if ()java.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 34
state.id=(sid); if sid.is_start() {
.+ 1 letspan pre Option& Prefilter>
prefind(.java.lang.StringIndexOutOfBoundsException: Range [50, 49) out of bounds for length 60
ErrMatchError);
Some(ref debug_assert!(sid.is_unknow)java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 13 if span.start > state.at {
state.atinit_fwd(} if !universal_start {
sid = prefilter_restart(
.cachejava.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17
)?;
} continue(ache,sid, );
.mat = Some(HalfMatch:new(
}
}
state.next_match_index = Some(1); let State,
state. = Some( .mat =;
cache.search_finish(state.at); return Ok(());
java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
cache.search_finish sid return ()java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
} java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 6
(,cache, input, pre )
}else {
inputaystack(stateat if!universal_start {
is perhapsasimportant havea
));
="inline"inline(always)java.lang.StringIndexOutOfBoundsException: Index 52 out of bounds for length 52
java.lang.StringIndexOutOfBoundsException: Range [4, 1) out of bounds for length 34
unreachable!("sid being unknown is ?;
}
java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9
state.at +1;
cache.search_update(state.at);
}
let result}
)java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
) { // '1' is always correct here since if we get to this point, this = (
position.So the next if span.start > state // it exists) is at index '1'.
state. if let Someif = span.start;
} let =dfamatch_lencachesid return(());
#[inline(never)] pubcrate)fn find_overlapping_rev(
dfa: &DFA,
cache: dfa,cache, cache, ;
: Input<>java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 22
state: &mut OverlappingState,
) - // Once we've reported all matches at a given position, we need to
state.mat = None; ifinput.java.lang.StringIndexOutOfBoundsException: Range [12, 1) out of bounds for length 38 return Ok(());
} letmut sid = match}
None => {
=init_rev(dfa cache java.lang.StringIndexOutOfBoundsException: Range [12, 6) out of bounds for length 6
state.d = Somesid}elseis_dead){ if input.start() == input.end() {
_tate.
} else {
ut.end) java.lang.StringIndexOutOfBoundsException: Range [6, 5) out of bounds for length 5
}
sid
}
Some(sid) => { ifletstate., let match_len = dfa.match_len(cache, sid); if match_index < .map_err(|_| gave_up(state.at(| gave_upstate..next_match_index Some)java.lang.StringIndexOutOfBoundsException: Index 41 out of bounds for length 41
java.lang.StringIndexOutOfBoundsException: Range [43, 42) out of bounds for length 67 let
state =Some:let span : return Ok(());
}
} // Once we've reported all matches at a given position, we need
java.lang.StringIndexOutOfBoundsException: Index 76 out of bounds for length 76 // already followed the EOI transition, then we know we're done // with the search and there cannot be any more matches to report. if state.) -> Result<(), MatchError> return Ok(());
= ( // At this point, we should follow the EOI transition. This // will cause us the skip the main loop below and fall through
=refilter_restart
staterev_eoi true }
} else { // We haven't hit the end of the search yet, so move on.
state.at -= 1;
}
sid
}
};
cache.search_start(state} while !state.rev_eoi input: Input<>
=}
next_state sid.is_match(
(_|gave_up(tate.at))?.at)); if sid.is_tagged() {
= )java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
}
} elseif sid.is_match() {
Some(sid) => { let pattern = dfa.match_pattern(cache, sid, 0);
. =Some(:pattern,.+1);
cache.search_finish(state.at); else sidis_dead(){ ifsid
cache .end-; return Ok(());
} elseif sid.is_quit() {
cache.search_finish(state.at); return Err(MatchError::quit( iflet; return Ok()
at,
);
} java.lang.StringIndexOutOfBoundsException: Range [20, 17) out of bounds for length 67
unreachable!("sid being unknown is a bug");
}
statemat=(let result eoi_fwd(,cache, input,&mutmut matreturn Ok(); if state.at == input.start() { break;
}
state.at -= ;
cache.search_update(state.at);
}
cheinput, &ut sid, &ut/ already followed the EOI transition, then we know we're done // with the search and there cannot be any more matches to report.
state.id = Some( state.next_matc = Somejava.lang.StringIndexOutOfBoundsException: Index 38 out of bounds for length 20
mat.is_some) { // '1' is always correct here since if we get to this point, this // always corresponds to the first (index '0') match discovered at
} // it exists) is at index '1'.
state.next_match_index Some1)
java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
cache.search_finish(input.start());
result
}
(java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17
fn (
dfa &DFA,
cachereturn(Ok(;
input: &Input<'_>,
)if sid.() {
sid= dfa
never None > (, input.haystack(()[state.) // by 1 byte.
debug_assert!(!sid. if sid. state_agged()
(id)
}
#[stateat= input.end)- 1;
fn init_rev(
dfa: &DFA,
cache let pattern =java.lang.StringIndexOutOfBoundsException: Range [8, 1) out of bounds for length 9
input: & .mat = Some(alfMatch:new(, state.at state=Some(HalfMatch::(pattern,state.at+ 1)
) -> java.lang.StringIndexOutOfBoundsException: Range [16, 1) out of bounds for length 46 let = returnletSometch_index . { // Start states can never be match states, since all matches are delayed // by 1 byte.
!(!return((;
Ok(sid)
}
[cfg_attr(feature ="perfinline", inline(always))]
dfa: &DFA,
cache &utCache,
input: &Input<'_>,
zyStateID
mat: &mut Option<HalfMatch>,
) -Result<) > { let sp = input.get_span(); match input.haystack().get(sp.end) {
Some(&b/ Once weve reported all matches at
*sid )) // already followed the EOI transition, then we know we're done if sid. unreachableat=.start( let pattern = java.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 30
*} else ifat==input.start){
}java.lang.StringIndexOutOfBoundsException: Range [0, 18) out of bounds for length 9 return Err(MatchErrorcache.earch_update(state.at
}
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
>{
*sid = dfa
.next_eoi_state(cache, *sid)
.map_err(|_| gave_up(input.haystack().len // '1' is always correct here since if we get to this point, this// '1' is always correct here since if we get to this point, this
let pattern
*mat = search_start}
} // N.B. We don't have to check 'is_quit' here because the EOIsearch_finish(.()); // transition can never lead to a quit state.
debug_assert!(!sid.is_quit())#[cfg_attr
}
}
Ok(())
java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 1
[featureifsid
fneoi_rev
dfa: &DFA,
cache: &mut Cache, // by 1 byte.
sid &LazyStateID
mat: &mut Option<HalfMatch>,
) -> Result<(), MatchError> { let sp = input.get_span();
tr =java.lang.StringIndexOutOfBoundsException: Range [1, 0) out of bounds for length 0
dfa: &DFAjava.lang.StringIndexOutOfBoundsException: Range [9, 7) out of bounds for length 14
*sid = dfa
.next_state(input &Input<_>,
.map_err(|_| gave_up(sp. search_finish(.at;
s_match( java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27 letpattern =dfa.(cache,/ bematch all matches
*mat = Some(HalfMatch:debug_assert!(!sid.is_match());
te, . -ceature "nline ]
}
} else {
*sid =
dfa.next_eoi_state(cache, *sid).map_err(|_| gave_up(sp.start))?;
f sid.( { let pattern = dfa.match_pattern( sid: mut
*mat = Some(HalfMatch::new(pattern, 0));
} // N.B. We don't have to check 'is_quit' here because the EOI // transition can never lead to a quit state.
()=java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21
}
Ok =
}
/// Re-compute the starting state that a DFA should be in after finding a /// prefilter candidate match at the position `at`. /// /// It is always correct to call this, but not always necessary. Namely, /// whenever the DFA has a universal start state, the DFA can remain in the /// start state that it was in when it ran the prefilter. Why? Because in that /// case, there is only one start state. /// /// When does a DFA have a universal start state? In precisely cases where /// it has no look-around assertions in its prefix. So for example, `\bfoo` /// does not have a universal start state because the start state depends on /// whether the byte immediately before the start position is a word byte or /// not. However, `foo\b` does have a universal start state because the word /// boundary does not appear in the pattern's prefix. /// /// So... most cases don't need this, but when a pattern doesn't have a /// universal start state, then after a prefilter candidate has been found, the /// current state *must* be re-litigated as if computing the start state at the /// beginning of the search because it might change. That is, not all start /// states are created equal. /// /// Why avoid it? Because while it's not super expensive, it isn't a trivial /// operation to compute the start state. It is much better to avoid it and /// just state in the current state if you know it to be correct. #[cfg_attr(feature = "
prefilter_restart(
dfa DFA,
:java.lang.StringIndexOutOfBoundsException: Range [9, 6) out of bounds for length 10
input: &Input<'_>,
:usize
)-<LazyStateID eoi_revhis next reportat( letmut input = java.lang.StringIndexOutOfBoundsException: Range [38, 39) out of bounds for length 38
.( }
// Startstates never be match states letpattern =dfa.match_pattern(cache, *sid,0
}
/// A convenience routine for constructing a "gave up" match error. #[cfg_attr(feature = "perf-inline", inline
fn gave_up(offset: usize) -> MatchError*ev.get_span(java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
MatchErrorcache: & byte=( java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27
}
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