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List:       pykde
Subject:    Re: [PyQt] Literals as template parameters
From:       Shaheed Haque <srhaque () theiet ! org>
Date:       2017-07-08 15:58:56
Message-ID: CAHAc2jfmDsXNOXG2x-hYYv_cyQcECsKWMvLJQwvj086zCOHs3A () mail ! gmail ! com
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Hi Phil,

On 23 June 2017 at 08:55, Phil Thompson <phil@riverbankcomputing.com> wrote:
> On 22 Jun 2017, at 5:59 pm, Shaheed Haque <srhaque@theiet.org> wrote:
> > 
> > Hi Phil,
> > 
> > SIP 4.19.3.dev1706161918 does not seem to like literals (or at least
> > literal numbers) as template paramters. The "16" here:
> > 
> > static int parseParenthesizedList(const QByteArray &data,
> > QVarLengthArray<QByteArray, 16> &result, int start = 0)
> > [int (const QByteArray &data, QVarLengthArray<QByteArray,
> > 16> &result, int start = 0)];
> > 
> > results in a syntax error. Temporarily changing the "16" to "a16"
> > suppresses the error. (i've not been able to think of a way to use
> > this as a workaround though).
> 
> The workaround is to define a C++ typedef in the %ModuleHeaderCode or \
> %TypeHeaderCode and use that typedef in the declaration (and the mapped type \
> definition that will be needed).

I tried replacing this SIP code with:

        WTF::Vector<unsigned char, 0> &codeBlock();

with:

        typedef WTF::Vector<unsigned char, 0> foo;
        foo &codeBlock();

but the result is still a syntax error. (I also added the
corresponding C++ typedef in %TypeHeaderCode to check if that made any
difference). Did I perhaps misinterpret the suggested workaround?

Thanks, Shaheed

P.S. I did look at parser.y, and AFAICS anything template-related
seemed to involve cpptypelist, and that seems to disallow a literal.


> 
> Phil
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