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right shift is now by default sign preserving (#11322)

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* right shift is now by default sign preserving
* fix hashString and semfold
* enable arithmetic shift right globally for CI
* fix typo
* remove xxx
* use oldShiftRight as flag
* apply feedback
* add changelog entry
This commit is contained in:
Arne Döring 2019-05-29 16:48:00 +02:00 • committed by Andreas Rumpf
commit 88b5dd3362
18 changed files with 211 additions and 187 deletions
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13
compiler/lexer.nim
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@ -647,34 +647,35 @@ proc handleDecChars(L: var TLexer, xi: var int) =
inc(L.bufpos)
proc addUnicodeCodePoint(s: var string, i: int) =
let i = cast[uint](i)
# inlined toUTF-8 to avoid unicode and strutils dependencies.
let pos = s.len
if i <=% 127:
if i <= 127:
s.setLen(pos+1)
s[pos+0] = chr(i)
elif i <=% 0x07FF:
elif i <= 0x07FF:
s.setLen(pos+2)
s[pos+0] = chr((i shr 6) or 0b110_00000)
s[pos+1] = chr((i and ones(6)) or 0b10_0000_00)
elif i <=% 0xFFFF:
elif i <= 0xFFFF:
s.setLen(pos+3)
s[pos+0] = chr(i shr 12 or 0b1110_0000)
s[pos+1] = chr(i shr 6 and ones(6) or 0b10_0000_00)
s[pos+2] = chr(i and ones(6) or 0b10_0000_00)
elif i <=% 0x001FFFFF:
elif i <= 0x001FFFFF:
s.setLen(pos+4)
s[pos+0] = chr(i shr 18 or 0b1111_0000)
s[pos+1] = chr(i shr 12 and ones(6) or 0b10_0000_00)
s[pos+2] = chr(i shr 6 and ones(6) or 0b10_0000_00)
s[pos+3] = chr(i and ones(6) or 0b10_0000_00)
elif i <=% 0x03FFFFFF:
elif i <= 0x03FFFFFF:
s.setLen(pos+5)
s[pos+0] = chr(i shr 24 or 0b111110_00)
s[pos+1] = chr(i shr 18 and ones(6) or 0b10_0000_00)
s[pos+2] = chr(i shr 12 and ones(6) or 0b10_0000_00)
s[pos+3] = chr(i shr 6 and ones(6) or 0b10_0000_00)
s[pos+4] = chr(i and ones(6) or 0b10_0000_00)
elif i <=% 0x7FFFFFFF:
elif i <= 0x7FFFFFFF:
s.setLen(pos+6)
s[pos+0] = chr(i shr 30 or 0b1111110_0)
s[pos+1] = chr(i shr 24 and ones(6) or 0b10_0000_00)