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186 Commits

Author SHA1 Message Date
Doug Gregor
35e6e56595 When we split a token starting with '<' or '>', make sure that the 
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
 2012-06-18 16:40:59 +00:00
John McCall
8c46c69efa Lexically distinguish prefix, postfix, and binary operators 
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
 2012-06-07 01:00:06 +00:00
Chris Lattner
22300ed57f improve diagnostic for a " in the middle of an interpolated string, including a range: 
t.swift:4:19: error: unexpected '"' character in string interpolation
"Hello \(x+1 world"
        ~~~~~~~~~~^



Swift SVN r1759
 2012-05-05 23:12:07 +00:00
Chris Lattner
024e592beb Now that the parser's lexer can be changed, just change it, instead of mutating the lexer, 
simplifying things a bit.


Swift SVN r1741
 2012-05-04 06:16:29 +00:00
Chris Lattner
2f44c0038c Initial stab at implementing string literal interpolation for simple expressions, 
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
 2012-05-04 05:53:50 +00:00
Chris Lattner
615ca4a360 implement the rest of character literal support, and enhance Char to be character literal 
compatible.  This wraps up rdar://11305635, though some cleanup of the testsuite can now be done.


Swift SVN r1672
 2012-04-27 06:18:30 +00:00
Chris Lattner
c7e68a4a8b langref and lexer support for character literals. 
Swift SVN r1671
 2012-04-27 05:51:30 +00:00
John McCall
e6d56fd718 Require an unspaced [ to start a subscript or array-type suffix. 
Per discussion, this should probably be "no newline since the last
token", but that decision should be made simultaneously for ( and [.

Swift SVN r1461
 2012-04-18 08:08:58 +00:00
Chris Lattner
ce7403dd1e implement IRGen of escapes. High unicode escapes aren't handled yet, but all the 
basics are.


Swift SVN r1363
 2012-04-10 20:59:45 +00:00
Chris Lattner
c78bdcff0e Initial lexer support for string literals. The regex is trivial and will be extended in the future. 
Swift SVN r1348
 2012-04-10 00:38:13 +00:00
John McCall
b8b1694564 Complain about file names that aren't valid identifiers. 
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
 2012-03-11 09:15:17 +00:00
Doug Gregor
b1c98e1731 Introduce Lexer::getLocForEndOfToken() to adjust source locations to 
the end of the current token, and use it for proper translation from
SourceRange to SMRange when printing diagnostics.



Swift SVN r853
 2011-11-09 22:03:30 +00:00
Doug Gregor
fc183b9cc3 Decouple the lexer from the ASTContext and specific BufferID. They 
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
 2011-11-09 21:49:40 +00:00
Doug Gregor
d0dd4d44bc Surface the Token and Lexer headers as public headers, since we're 
going to need to be able to use the lexer from the 'swift' tool itself.


Swift SVN r851
 2011-11-09 21:09:49 +00:00
Chris Lattner
26f66a8b24 move all the parser headers into lib/Parse since they are now all private. 
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
 2011-08-13 22:51:04 +00:00
Chris Lattner
b8fd157450 rip out the dead "isPrecededByIdentifier" logic from the AST and Lexer. 
Swift SVN r529
 2011-08-12 21:36:25 +00:00
Chris Lattner
0871b128f8 add support for /**/ comments to the lexer, allow nesting of them since we won't 
have the #if 0 hack to handle nesting.


Swift SVN r506
 2011-08-12 00:37:01 +00:00
Chris Lattner
23759c8624 rename Lex -> lex too. 
Swift SVN r484
 2011-08-03 00:08:21 +00:00
Chris Lattner
fdc2dcc7db rename lexer methods to follow the naming convention and add the ability to lookahead one token. 
Swift SVN r483
 2011-08-03 00:07:43 +00:00
Chris Lattner
6f7c702321 disable copy and assignment of various types, and plain 'operator new' of others 
using the new '0x way.


Swift SVN r443
 2011-07-24 19:33:27 +00:00
Chris Lattner
6fbe70dd87 convert TokenKind to a scoped enum, eliminating the old c++'98 hackaround to 
emulate it.


Swift SVN r442
 2011-07-24 19:28:36 +00:00
Chris Lattner
7275ca527a pull in StringRef and Twine. 
Swift SVN r422
 2011-07-19 06:00:20 +00:00
Chris Lattner
e647b29339 stop the llvm-namespace-qualification-insanity by caving in and 
adding a new swift/AST/LLVM.h file which forward declares and imports
common llvm classes, starting with SMLoc.


Swift SVN r420
 2011-07-19 05:49:43 +00:00
Chris Lattner
7530ec988c Add a error to reject foo() when foo is not a function type. Previously we allowed it because these are two valid top-level values, but we now reject them because they are almost certainly a bug. This can be disabled by putting a space between them if this is useful for some reason. 
Swift SVN r339
 2011-03-27 02:56:47 +00:00
Chris Lattner
b3e5c55fbc Change the parser methods to lower case to follow naming conventions. 
Swift SVN r256
 2011-03-06 23:28:17 +00:00
Chris Lattner
272d9e8dad Propagate "there were errors in the input" out to the exit code of the swift app by adding a "HadError" bool to ASTContext. 
Swift SVN r244
 2011-03-01 07:59:53 +00:00
Chris Lattner
3bd8a85784 Fix weirdness in the lang spec by making $123 be a special type of implementation identifier token, handling it uniformly in the grammar in the few places that it is valid. 
Swift SVN r215
 2010-11-11 22:27:39 +00:00
Chris Lattner
19e5390b78 twinify more diagnostics. 
Swift SVN r168
 2010-10-09 17:50:40 +00:00
Chris Lattner
47afc23bac Expand lexer to cover a broader range of punctuators for function names. Add comparison functions to standard prolog. 
Swift SVN r128
 2010-08-01 05:58:41 +00:00
Chris Lattner
05f5028b7a stub out a parser hook. 
Swift SVN r13
 2010-07-18 20:17:04 +00:00
Chris Lattner
3cd9e46705 add numeric constant support, we can now lex exciting stuff 
like this:

// Comment.

var x : int;
var x2 = 4;
var x3 = 4+5;



Swift SVN r11
 2010-07-18 19:01:18 +00:00
Chris Lattner
6236deaabc implement lexer support for identifiers and our 2 keywords so far. 
Swift SVN r10
 2010-07-18 18:57:12 +00:00
Chris Lattner
80ba9c7e66 add some more punctuator characters and // comments. 
Swift SVN r9
 2010-07-18 01:44:13 +00:00
Chris Lattner
461f41edb1 start lexing trivial tokens, discard whitespace between them. 
Swift SVN r8
 2010-07-18 01:32:14 +00:00
Chris Lattner
db8e1301ff Start setting up the lexer object. 
Swift SVN r7
 2010-07-18 01:14:09 +00:00
Chris Lattner
874badb51b consolidate lexer stuff into the Parser lib. 
Swift SVN r6
 2010-07-18 00:50:29 +00:00