diff options
Diffstat (limited to 'lib/pure/parseutils.nim')
| -rw-r--r-- | lib/pure/parseutils.nim | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/lib/pure/parseutils.nim b/lib/pure/parseutils.nim index a602b0e1b..57387e62e 100644 --- a/lib/pure/parseutils.nim +++ b/lib/pure/parseutils.nim @@ -87,6 +87,23 @@ proc parseOct*(s: string, number: var int, start = 0): int {. inc(i) if foundDigit: result = i-start +proc parseBin*(s: string, number: var int, start = 0): int {. + rtl, extern: "npuParseBin", noSideEffect.} = + ## parses an binary number and stores its value in ``number``. Returns + ## the number of the parsed characters or 0 in case of an error. + var i = start + var foundDigit = false + if s[i] == '0' and (s[i+1] == 'b' or s[i+1] == 'B'): inc(i, 2) + while true: + case s[i] + of '_': discard + of '0'..'1': + number = number shl 1 or (ord(s[i]) - ord('0')) + foundDigit = true + else: break + inc(i) + if foundDigit: result = i-start + proc parseIdent*(s: string, ident: var string, start = 0): int = ## parses an identifier and stores it in ``ident``. Returns ## the number of the parsed characters or 0 in case of an error. |