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scanner: speed up text_scan by using a specialised keywords matcher, instead of a generic V map of keywords

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This commit is contained in:
Delyan Angelov
2021-10-28 15:09:41 +03:00
parent b1bb1d361a
commit 8014235e0e
5 changed files with 151 additions and 26 deletions
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23
vlib/builtin/string.v
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@@ -499,6 +499,28 @@ fn (s string) == (a string) bool {
}
}
// compare returns -1 if `s` < `a`, 0 if `s` == `a`, and 1 if `s` > `a`
[direct_array_access]
pub fn (s string) compare(a string) int {
min_len := if s.len < a.len { s.len } else { a.len }
for i in 0 .. min_len {
if s[i] < a[i] {
return -1
}
if s[i] > a[i] {
return 1
}
}
if s.len < a.len {
return -1
}
if s.len > a.len {
return 1
}
return 0
}
[direct_array_access]
fn (s string) < (a string) bool {
for i in 0 .. s.len {
if i >= a.len || s[i] > a[i] {
@@ -513,6 +535,7 @@ fn (s string) < (a string) bool {
return false
}
[direct_array_access]
fn (s string) + (a string) string {
new_len := a.len + s.len
mut res := string{