On Thu, Feb 2, 2012 at 2:00 PM, Waldemar Horwat <walde...@google.com> wrote:
> OK. This introduces yet another lexing context, in which all productions > *except* QuasiMiddle and QuasiEnd are disallowed, and white space and > comment handling is funny. That works if the expressions must be one of > the two forms: > > $id > ${expr} > > Is that the exhaustive list, or are we looking at other forms such as $$, $ > id.id, $id[expr], etc.? > I'll let Mike speak for the details of what he really wants to propose. But here are the answers from E: escapes with the quasi literal text are taken care of by the QuasiChar production, much like the existing definition of DoubleStringCharacter: QuasiChar :: SourceCharacter but not one of $ or ` $ $ $ ` $ \ EscapeSequence So that `$$` === "$", `$`` === "`", and `$\n` === "\n", respectively. Regarding `...$id.id...` and `...$id[expr]...`, only the first id in each case in in the quasiHole. All the text afterwards is part of the QuasiClose. -- Cheers, --MarkM
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