[Swift-devel] appending the app name with 'app-' results in parsing error

[Mihael Hategan]

Not bug. "-" is an operator and if it was allowed in identifiers, a-b
would be ambiguous. You could try the same thing in Java, C, or any
other language that has the basic math operators.

Mihael

On Fri, 2015-05-15 at 11:18 -0500, Ketan Maheshwari wrote:
> Hi,
> 
> For example:
> 
> type file;
> 
> app (file o) app-cat (file i) {
>   cat @i stdout=@o;
> }
> file out[]<simple_mapper; location="outdir", prefix="f.",suffix=".out">;
> 
> string d="data.txt";
> 
> foreach j in [1:10] {
>  file data<single_file_mapper; file=d>;
>  out[j] = app-cat(data);
> }
> 
> Gives:
> 
> $ swift -config local.conf catsn.swift
> Swift trunk git-rev: 86de22e2841518dbf337a0e0da56ad1dd9dd70f8 heads/master 6343
> RunID: run003
> Could not compile SwiftScript source: line 3:14: expecting an
> identifier, found 'app'
> 
> It works with 'app_' (ie. replaceing hyphen with underscore).
> 
> Bug?
> 
> --
> Ketan
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