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make cstrutils work in VM (#16590)

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* make cstrutils work in VM

* more
This commit is contained in:
flywind 2021-01-05 10:52:26 -06:00 • committed by GitHub
commit c04f305bf7
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4 changed files with 132 additions and 104 deletions
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15
lib/pure/strutils.nim
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@ -81,7 +81,7 @@ when defined(nimVmExportFixed):
include "system/inclrtl"
import std/private/since
from std/private/strimpl import cmpIgnoreStyleImpl, cmpIgnoreCaseImpl
from std/private/strimpl import cmpIgnoreStyleImpl, cmpIgnoreCaseImpl, startsWithImpl, endsWithImpl
const
@ -1530,11 +1530,7 @@ func startsWith*(s, prefix: string): bool {.rtl, extern: "nsuStartsWith".} =
let a = "abracadabra"
doAssert a.startsWith("abra") == true
doAssert a.startsWith("bra") == false
var i = 0
while true:
if i >= prefix.len: return true
if i >= s.len or s[i] != prefix[i]: return false
inc(i)
startsWithImpl(s, prefix)
func endsWith*(s: string, suffix: char): bool {.inline.} =
## Returns true if `s` ends with `suffix`.
@ -1562,12 +1558,7 @@ func endsWith*(s, suffix: string): bool {.rtl, extern: "nsuEndsWith".} =
let a = "abracadabra"
doAssert a.endsWith("abra") == true
doAssert a.endsWith("dab") == false
var i = 0
var j = len(s) - len(suffix)
while i+j >= 0 and i+j < s.len:
if s[i+j] != suffix[i]: return false
inc(i)
if i >= suffix.len: return true
endsWithImpl(s, suffix)
func continuesWith*(s, substr: string, start: Natural): bool {.rtl,
extern: "nsuContinuesWith".} =