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digitalmars.D.learn - Does the grammar allow an alias statement without a semicolon?

reply "Solomon E" <default avatar.org> writes:
Hi, everyone, first post here. I'm trying to learn to parse D 
code.

The line "alias StorageClassesopt BasicType Declarator" in 
http://dlang.org/grammar#AliasDeclaration is apparently missing a 
semicolon after Declarator.

If that line is not missing a semicolon, could someone please 
explain how it's possible to parse D, given that according to the 
grammar with that line taken literally, some statements may come 
after each other without a semicolon, and some statements may end 
with one of the keywords "const", "immutable", "inout", or 
"shared", which are keywords that come at the beginning of some 
other statements?
Oct 17 2014
next sibling parent ketmar via Digitalmars-d-learn <digitalmars-d-learn puremagic.com> writes:
On Sat, 18 Oct 2014 00:52:22 +0000
Solomon E via Digitalmars-d-learn <digitalmars-d-learn puremagic.com>
wrote:


 The line "alias StorageClassesopt BasicType Declarator" in=20
 http://dlang.org/grammar#AliasDeclaration is apparently missing a=20
 semicolon after Declarator.


this line should be removed altogether to stop people using this
syntax. ;-) 'alias a =3D int;' is much better and clearer.

and yes, this is a bug, semicolon is not optional there.
Oct 17 2014
prev sibling parent reply "thedeemon" <dlang thedeemon.com> writes:
On Saturday, 18 October 2014 at 00:52:23 UTC, Solomon E wrote:

 Hi, everyone, first post here. I'm trying to learn to parse D 
 code.


Just in case, I'll remind these two projects that might be 
helpful:
https://github.com/Hackerpilot/libdparse
https://github.com/Hackerpilot/DGrammar
Oct 17 2014
parent reply "Solomon E" <default avatar.org> writes:
Thank you both. That DGrammar project has some different names 
for the nonterminals in its grammar, and a different arrangement, 
but it confirms there should be a semicolon with any alias 
statement. I'm just trying to parse D when I read it myself so 
far, and figure out how the grammar works a little. I'm not 
trying to write a parser for it, at least not yet.
Oct 17 2014
parent ketmar via Digitalmars-d-learn <digitalmars-d-learn puremagic.com> writes:
On Sat, 18 Oct 2014 02:54:21 +0000
Solomon E via Digitalmars-d-learn <digitalmars-d-learn puremagic.com>
wrote:


 Thank you both. That DGrammar project has some different names=20
 for the nonterminals in its grammar, and a different arrangement,=20
 but it confirms there should be a semicolon with any alias=20
 statement. I'm just trying to parse D when I read it myself so=20
 far, and figure out how the grammar works a little. I'm not=20
 trying to write a parser for it, at least not yet.


btw, you can fill a bug report for this.
Oct 17 2014