Re: Non-decimal integer literals

Hi Peter,

0001

-/* we no longer allow unary minus in numbers.
- * instead we pass it separately to parser. there it gets
- * coerced via doNegate() -- Leon aug 20 1999
+/*
+ * Numbers
+ *
+ * Unary minus is not part of a number here. Instead we pass it
separately to
+ * parser, and there it gets coerced via doNegate().

If we're going to change the comment anyway, "the parser" sounds more
natural. Aside from that, 0001 and 0002 can probably be pushed now, if you
like. I don't have any good ideas about 0003 at the moment.

0005

--- a/src/interfaces/ecpg/preproc/pgc.l
+++ b/src/interfaces/ecpg/preproc/pgc.l
@@ -365,6 +365,10 @@ real ({integer}|{decimal})[Ee][-+]?{digit}+
realfail1 ({integer}|{decimal})[Ee]
realfail2 ({integer}|{decimal})[Ee][-+]

+integer_junk {integer}{ident_start}
+decimal_junk {decimal}{ident_start}
+real_junk {real}{ident_start}

A comment might be good here to explain these are only in ECPG for
consistency with the other scanners. Not really important, though.

0006

+{hexfail} {
+ yyerror("invalid hexadecimal integer");
+ }
+{octfail} {
+ yyerror("invalid octal integer");
}
-{decimal} {
+{binfail} {
+ yyerror("invalid binary integer");
+ }

It seems these could use SET_YYLLOC(), since the error cursor doesn't match
other failure states:

+SELECT 0b;
+ERROR: invalid binary integer at or near "SELECT 0b"
+LINE 1: SELECT 0b;
+ ^
+SELECT 1b;
+ERROR: trailing junk after numeric literal at or near "1b"
+LINE 1: SELECT 1b;
+ ^

We might consider some tests for ECPG since lack of coverage has been a
problem.

Also, I'm curious: how does the spec work as far as deciding the year of
release, or feature-freezing of new items?
--
John Naylor
EDB: http://www.enterprisedb.com