jyapayne/Nim
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Merge pull request #2799 from avsej/fix-streams-peekline

Browse source 
Fix streams peekline
This commit is contained in:
Andreas Rumpf 2015-05-25 23:59:52 +02:00
commit 77b010bd36
1 changed files with 53 additions and 49 deletions
Download patch file Download diff file Expand all files Collapse all files

8
lib/pure/streams.nim
View file

@ -242,7 +242,7 @@ proc peekLine*(s: Stream, line: var TaintedString): bool =
## otherwise. If ``false`` is returned `line` contains no new data. ## otherwise. If ``false`` is returned `line` contains no new data.
let pos = getPosition(s) let pos = getPosition(s)
defer: setPosition(s, pos) defer: setPosition(s, pos)
readLine(s, line) result = readLine(s, line)
proc readLine*(s: Stream): TaintedString = proc readLine*(s: Stream): TaintedString =
## Reads a line from a stream `s`. Note: This is not very efficient. Raises ## Reads a line from a stream `s`. Note: This is not very efficient. Raises
@ -263,7 +263,7 @@ proc peekLine*(s: Stream): TaintedString =
## `EIO` if an error occurred. ## `EIO` if an error occurred.
let pos = getPosition(s) let pos = getPosition(s)
defer: setPosition(s, pos) defer: setPosition(s, pos)
readLine(s) result = readLine(s)
type type
StringStream* = ref StringStreamObj ## a stream that encapsulates a string StringStream* = ref StringStreamObj ## a stream that encapsulates a string
@ -458,3 +458,7 @@ when defined(testing):
assert(ss.getPosition == 5) # did move assert(ss.getPosition == 5) # did move
assert(ss.peekLine() == "uick brown fox jumped over the lazy dog.") assert(ss.peekLine() == "uick brown fox jumped over the lazy dog.")
assert(ss.getPosition == 5) # haven't moved assert(ss.getPosition == 5) # haven't moved
var str = newString(100)
assert(ss.peekLine(str))
assert(str == "uick brown fox jumped over the lazy dog.")
assert(ss.getPosition == 5) # haven't moved