The lexer now models tuples, patterns, subscripting, function calls, and
field access robustly. The output tokens are now better named as well:
l_paren and l_paren_call, and l_square and l_square_subscript. It
should be much more clear now which one to use. Also, the use of
l_paren or l_square will not arbitrarily flip flop if the token before
it is a keyword or if the token before it was the trailing ']' of an
attribute list. Similarly, tuples will always cause the lexer to produce
l_paren, regardless if the user typed '((x,y))' or '( (x,y))'.
When we someday add array literals, the right token is now naturally
falling out of the lexer.
Swift SVN r3840
resulting token goes back through the lexer to get the appropriate
token kind. Thanks to Chris for spotting this.
Also, document the '<' and '>' splitting behavior in LangRef.
Swift SVN r2192
and use this information as cues in the language. Right now,
we do not accept things like "-- *i" because the prefix
operator is not correctly right-bound; instead you have to
write "--(*i)". I'm okay with that; I did add a specialized
diagnostic recognizing operator-binary in a place where we're
expecting a potential operator-prefix.
Swift SVN r2161
e.g. "foo is \(i+j)". This implements rdar://11223686
Doug implemented all the hard parts of this. I ripped out support for nested string
literals (i.e. string literals within an interpolated string), which simplified the
approach and defined away some problems with his patch in progress. I plan a few refinements
on top of this basic patch.
Swift SVN r1738
Per discussion, this should probably be "no newline since the last
token", but that decision should be made simultaneously for ( and [.
Swift SVN r1461
When we divide the world into scripts and modules, this
won't matter for the former. Recognize <stdin> as a
special case; it should instead just always be a script.
Fixes rdar://problem/10986311.
Swift SVN r1181
aren't needed for the lexer proper (which just needs a buffer to dig
through). Also, make it possible to suppress lexer diagnostics merely
by not giving it a diagnostic engine to work with.
Swift SVN r852
I chose to just delete the -lex action in swift, since it was only useful for
about 10 minutes during bringup and probably never will be again.
Swift SVN r557
