Re: \if, \elseif, \else, \endif (was Re: PSQL commands: \quit_if, \quit_unless)

From: Fabien COELHO <coelho(at)cri(dot)ensmp(dot)fr>
To: Corey Huinker <corey(dot)huinker(at)gmail(dot)com>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Greg Stark <stark(at)mit(dot)edu>, Erik Rijkers <er(at)xs4all(dot)nl>, Robert Haas <robertmhaas(at)gmail(dot)com>, Daniel Verite <daniel(at)manitou-mail(dot)org>, Jim Nasby <Jim(dot)Nasby(at)bluetreble(dot)com>, PostgreSQL <pgsql-hackers(at)postgresql(dot)org>, pgsql-hackers-owner(at)postgresql(dot)org
Subject: Re: \if, \elseif, \else, \endif (was Re: PSQL commands: \quit_if, \quit_unless)
Date: 2017-03-03 06:25:09
Message-ID: alpine.DEB.2.20.1703030723050.12372@lancre
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> For endif, I really exagerated, "switch { defaut: " is too much, please
> accept my apology. Maybe just do the pop & error reporting?

Or maybe be more explicit:

switch (current state)
case NONE:
error no matching if;
case ELSE_FALSE:
case ELSE_TRUE:
case ...:
pop;
Assert(success);

--
Fabien.

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