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fix #18702(fix parseutils.parseFloat) (#18703) [backport:1.0]

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* fix #18702
* Apply suggestions from code review

(cherry picked from commit 901c5ded52)
This commit is contained in:
flywind
2021-08-16 21:14:35 +08:00
committed by narimiran
parent 1802f94868
commit 8d5065453f
2 changed files with 57 additions and 4 deletions
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52
tests/stdlib/tparseutils.nim Normal file
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@@ -0,0 +1,52 @@
import parseutils, sequtils, sugar
let input = "$test{} $this is ${an{ example}} "
let expected = @[(ikVar, "test"), (ikStr, "{} "), (ikVar, "this"),
(ikStr, " is "), (ikExpr, "an{ example}"), (ikStr, " ")]
doAssert toSeq(interpolatedFragments(input)) == expected
var value = 0
discard parseHex("0x38", value)
doAssert value == 56
value = -1
doAssert(parseSaturatedNatural("848", value) == 3)
doAssert value == 848
value = -1
discard parseSaturatedNatural("84899999999999999999324234243143142342135435342532453", value)
doAssert value == high(int)
value = -1
discard parseSaturatedNatural("9223372036854775808", value)
doAssert value == high(int)
value = -1
discard parseSaturatedNatural("9223372036854775807", value)
doAssert value == high(int)
value = -1
discard parseSaturatedNatural("18446744073709551616", value)
doAssert value == high(int)
value = -1
discard parseSaturatedNatural("18446744073709551615", value)
doAssert value == high(int)
value = -1
doAssert(parseSaturatedNatural("1_000_000", value) == 9)
doAssert value == 1_000_000
var i64Value: int64
discard parseBiggestInt("9223372036854775807", i64Value)
doAssert i64Value == 9223372036854775807
block:
var f: float
let res = collect:
for x in ["9.123456789012345+","11.123456789012345+","9.123456789012345-","8.123456789012345+","9.12345678901234-","9.123456789012345"]:
(parseFloat(x, f, 0), $f)
doAssert res == @[(17, "9.123456789012344"), (18, "11.123456789012344"),
(17, "9.123456789012344"), (17, "8.123456789012344"),
(16, "9.12345678901234"), (17, "9.123456789012344")]