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bind table

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This commit is contained in:
Andreas Rumpf 2009-11-12 19:34:21 +01:00
commit ac421c37ba
18 changed files with 957 additions and 384 deletions
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6
lib/pure/unicode.nim
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@ -44,15 +44,13 @@ proc runeLenAt*(s: string, i: int): int =
template fastRuneAt*(s: string, i: int, result: expr, doInc = true) =
## Returns the unicode character ``s[i]`` in `result`. If ``doInc == true``
## `i` is incremented by the number of bytes that have been processed.
when not defined(ones):
template ones(n: expr): expr = ((1 shl n)-1)
if ord(s[i]) <=% 127:
result = TRune(ord(s[i]))
when doInc: inc(i)
elif ord(s[i]) shr 5 == 0b110:
assert(ord(s[i+1]) shr 6 == 0b10)
result = TRune((ord(s[i]) and ones(5)) shl 6 or (ord(s[i+1]) and ones(6)))
result = TRune((ord(s[i]) and (bind ones(5))) shl 6 or
(ord(s[i+1]) and ones(6)))
when doInc: inc(i, 2)
elif ord(s[i]) shr 4 == 0b1110:
assert(ord(s[i+1]) shr 6 == 0b10)