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Make all parseutils examples auto-checking #13238

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Jan 23, 2020
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Make all parseutils examples auto-checking #13238

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57 changes: 25 additions & 32 deletions lib/pure/parseutils.nim
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Original file line number Diff line number Diff line change
Expand Up @@ -12,32 +12,29 @@
##
## To unpack raw bytes look at the `streams <streams.html>`_ module.
##
##
## .. code-block::
## import parseutils
## .. code-block:: nim
## :test:
##
## let logs = @["2019-01-10: OK_", "2019-01-11: FAIL_", "2019-01: aaaa"]
## var outp: seq[string]
##
## for log in logs:
## var res: string
## if parseUntil(log, res, ':') == 10: # YYYY-MM-DD == 10
## echo res & " - " & captureBetween(log, ' ', '_')
## # => 2019-01-10 - OK
##
## outp.add(res & " - " & captureBetween(log, ' ', '_'))
## doAssert outp == @["2019-01-10 - OK", "2019-01-11 - FAIL"]
##
## .. code-block::
## import parseutils
## .. code-block:: nim
## :test:
## from strutils import Digits, parseInt
##
## let input1 = "2019 school start"
## let input2 = "3 years back"
##
## let startYear = input1[0..skipWhile(input1, Digits)-1] # 2019
## let yearsBack = input2[0..skipWhile(input2, Digits)-1] # 3
##
## echo "Examination is in " & $(parseInt(startYear) + parseInt(yearsBack))
## # => Examination is in 2022
##
## let
## input1 = "2019 school start"
## input2 = "3 years back"
## startYear = input1[0 .. skipWhile(input1, Digits)-1] # 2019
## yearsBack = input2[0 .. skipWhile(input2, Digits)-1] # 3
## examYear = parseInt(startYear) + parseInt(yearsBack)
## doAssert "Examination is in " & $examYear == "Examination is in 2022"
##
## **See also:**
## * `strutils module<strutils.html>`_ for combined and identical parsing proc's
Expand Down Expand Up @@ -586,21 +583,17 @@ iterator interpolatedFragments*(s: string): tuple[kind: InterpolatedKind,
value: string] =
## Tokenizes the string `s` into substrings for interpolation purposes.
##
## Example:
##
## .. code-block:: nim
## for k, v in interpolatedFragments(" $this is ${an example} $$"):
## echo "(", k, ", \"", v, "\")"
##
## Results in:
##
## .. code-block:: nim
## (ikString, " ")
## (ikExpr, "this")
## (ikString, " is ")
## (ikExpr, "an example")
## (ikString, " ")
## (ikDollar, "$")
runnableExamples:
var outp: seq[tuple[kind: InterpolatedKind, value: string]]
for k, v in interpolatedFragments(" $this is ${an example} $$"):
outp.add (k, v)
doAssert outp == @[(ikStr, " "),
(ikVar, "this"),
(ikStr, " is "),
(ikExpr, "an example"),
(ikStr, " "),
(ikDollar, "$")]

var i = 0
var kind: InterpolatedKind
while true:
Expand Down