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hashtables: 1st version; parseutils additions

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This commit is contained in:
Araq 2011-04-18 23:41:31 +02:00
commit d1b766cec0
5 changed files with 175 additions and 6 deletions
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24
lib/pure/parseutils.nim
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@ -77,10 +77,12 @@ proc parseIdent*(s: string, ident: var string, start = 0): int =
result = i-start
proc parseToken*(s: string, token: var string, validChars: set[char],
start = 0): int {.inline.} =
start = 0): int {.inline, deprecated.} =
## parses a token and stores it in ``token``. Returns
## the number of the parsed characters or 0 in case of an error. A token
## consists of the characters in `validChars`.
##
## **Deprecated since version 0.8.12**: Use ``parseWhile`` instead.
var i = start
while s[i] in validChars: inc(i)
result = i-start
@ -110,6 +112,26 @@ proc skipWhile*(s: string, toSkip: set[char], start = 0): int {.inline.} =
## Returns number of characters skipped.
while s[result+start] in toSkip and s[result+start] != '\0': inc(result)
proc parseUntil*(s: string, token: var string, until: set[char],
start = 0): int {.inline.} =
## parses a token and stores it in ``token``. Returns
## the number of the parsed characters or 0 in case of an error. A token
## consists of the characters notin `until`.
var i = start
while s[i] notin until: inc(i)
result = i-start
token = copy(s, start, i-1)
proc parseWhile*(s: string, token: var string, validChars: set[char],
start = 0): int {.inline.} =
## parses a token and stores it in ``token``. Returns
## the number of the parsed characters or 0 in case of an error. A token
## consists of the characters in `validChars`.
var i = start
while s[i] in validChars: inc(i)
result = i-start
token = copy(s, start, i-1)
{.push overflowChecks: on.}
# this must be compiled with overflow checking turned on:
proc rawParseInt(s: string, b: var biggestInt, start = 0): int =