Proposal for SentinelInputRange

[Dmitry Olshansky]

28-Feb-2013 14:44, Walter Bright пишет:
> On 2/28/2013 12:25 AM, Jacob Carlborg wrote:
>> On 2013-02-28 08:23, Walter Bright wrote:
>>
>>> There is always a terminating 0, even if the file ends in 0x1a.
>>>
>>> (The 0x1A comes from some old editors that end a file with a control Z.)
>>
>> http://dlang.org/lex.html, "End of File" shows this:
>>
>> EndOfFile:
>>      physical end of the file
>>      \u0000
>>      \u001A
>>
>> Doesn't that mean that the input is empty if the file is empty, \u0000
>> or \u001A
>> is encountered?
>>
>


> Please follow the source code from file to input to the lexer.

Source as spec is no good. Either change the spec or  admit that having 
a tuple of sentinels as manifest constant is fine. In any case constant 
tuples are easily unrolled into case statements.

> https://github.com/D-Programming-Language/dmd/blob/master/src/root/root.c
>
> line 1012 and 1038


-- 
Dmitry Olshansky