| From: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
|---|---|
| To: | Christopher Kings-Lynne <chriskl(at)familyhealth(dot)com(dot)au> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Andrew Dunstan <andrew(at)dunslane(dot)net>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: [PATCHES] dollar quoting |
| Date: | 2004-02-17 04:01:38 |
| Message-ID: | 200402170401.i1H41cN13675@candle.pha.pa.us |
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| Lists: | pgsql-hackers pgsql-patches |
Christopher Kings-Lynne wrote:
> > Parsing is a whole nother ball of wax besides lexing. I wasn't planning
> > to put *that* into psql. Remember the only thing psql really wants from
> > this is to detect where end-of-statement is ...
>
> Forgive my lameness, but I've never truly figured out where parsing ends
> and lexing begins. Anyone care to illuminate me on the difference?
The simplistic answer is the lexing breaks a string up into
words/tokens, and parsing matches those tokens against patterns and
fires actions.
--
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 359-1001
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