Re: How to read thru a script file from C a line at a time.

["Edward Mitchell" <emitchell@...>]

"Nick Gammon" <nick@gammon.com.au> wrote in message 
B21202B7-1612-4546-BD00-4740D4CC7A05@gammon.com.au">news:B21202B7-1612-4546-BD00-4740D4CC7A05@gammon.com.au...
>
> On 18/10/2006, at 6:39 AM, Edward Mitchell wrote:
>
>> Is there a way I can pass line by line of a script to Lua.
>
> I don't think you can do this reliably. Take this example:
>
> a = 2 + 2
>     + 3
> print (a)
>
> The first line (a = 2 + 2) is a complete statement, which will  compile 
> OK. However if you do that, then the "+ 3" line won't make  sense.
>
> However the whole thing is semantically correct and should print 7.
>

Nick,

You're right, without a sentence terminator it's not possible to determine 
whether there is some text missing.  I was used to a sentence in the 
language either being terminated with a semicolon or a curly brace.  Since 
Lua ignores new lines effectively (and doesn't require a sentence 
terminator), the entire input file has be read before a decision can be made 
on the correctness of the Lua program that the file (or string) contains.

Ed