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fixes some issues with underscores in float literals. add more tests.

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fixes some potential issues with underscores in float literals.
adds more checks for badly positionned underscores in float literals.
adds more test files.
This commit is contained in:
Parashurama 2016-05-19 21:03:22 +02:00
commit 5d7d8816e5
3 changed files with 54 additions and 5 deletions
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12
lib/system/sysstr.nim
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@ -328,7 +328,7 @@ proc nimParseBiggestFloat(s: string, number: var BiggestFloat,
fraction: uint64
frac_exponent= 0
exp_sign = 1
first_digit = 0
first_digit = -1
has_sign = false
# Sign?
@ -359,6 +359,7 @@ proc nimParseBiggestFloat(s: string, number: var BiggestFloat,
# Skip leading zero
while s[i] == '0':
inc(i)
while s[i] == '_': inc(i)
if s[i] in {'0'..'9'}:
first_digit = (s[i].ord - '0'.ord)
@ -366,7 +367,7 @@ proc nimParseBiggestFloat(s: string, number: var BiggestFloat,
while s[i] in {'0'..'9'}:
inc(kdigits)
integer = integer * 10'u64 + (s[i].ord - '0'.ord).uint64
inc(i);
inc(i)
while s[i] == '_': inc(i)
# Fractional part?
@ -374,11 +375,12 @@ proc nimParseBiggestFloat(s: string, number: var BiggestFloat,
inc(i)
# if no integer part, Skip leading zeros
if kdigits <= 0:
while s[i] in {'_','0'}:
inc(i)
while s[i] == '0':
inc(frac_exponent)
inc(i)
while s[i] == '_': inc(i)
if s[i] in {'0'..'9'}:
if first_digit == -1 and s[i] in {'0'..'9'}:
first_digit = (s[i].ord - '0'.ord)
# get fractional part
while s[i] in {'0'..'9'}: