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Author SHA1 Message Date
Niko Matsakis
1102b26390 Fix expr.lalropo 2015-07-12 09:04:24 -04:00
Niko Matsakis
4921ddbfc2 Port the LR(1) state construction code to use KernelSet, 
which reveals that the assoc type direction is wrong,
it should be parameterized by the richer type of the Kernel
than by the index
 2015-07-12 05:41:20 -04:00
Niko Matsakis
9b9a487802 add an error message for named symbols, it's not the best 2015-07-12 05:26:22 -04:00
Niko Matsakis
c3e4b7916d Simplify grammars more now that "Num" has proper type 2015-07-11 21:35:04 -04:00
Niko Matsakis
5c782c182e Fix lots of things, but the new pattern mechanism works -- we can match 
and extract subbindings, and terminals no longer have uniform type. Very
nice.
 2015-07-11 21:34:02 -04:00
Niko Matsakis
ae821645e9 change format of token declarations to extern token with an enum 
section, paving the way for more advanced concepts; also, refactor Types
interface to make it possible to have different types depending on the
kind of terminal
 2015-07-10 17:28:29 -04:00
Niko Matsakis
dfb787fa3e Use <> instead of ~~ to be consistent with < as the "select" 
operator.
 2015-07-10 09:23:33 -04:00
Niko Matsakis
23d204e6b2 Change from id:X to <id:X> 2015-07-07 06:22:06 -04:00
Niko Matsakis
350e46cc98 Change from ~X to <X> 2015-07-07 06:12:04 -04:00
Niko Matsakis
1a0c88f0bc modify parser so that Foo<Bar> is considered a macro invocation, 
but `Foo <Bar>` is considered two distinct tokens
 2015-07-07 05:47:36 -04:00
Niko Matsakis
909d1b0655 get all tests passing again after introducing validation step 2015-07-07 05:47:19 -04:00
Niko Matsakis
8fc9b609a4 fix error reporting in terms of spans etc (no automated tests for this, boo) 2015-07-03 13:14:38 -04:00
Niko Matsakis
1b46191fdc add validation an (incompletely utilized) unit testing framework, thread 
spans through somewhat more
 2015-07-02 15:31:43 -07:00
Niko Matsakis
dc9b6567ea thread spans through the parse-tree symbols, not sure why I didn't 
do this in the first place
 2015-07-02 13:15:37 -07:00
Niko Matsakis
48e3647748 make the DFA analyzer accept explicit precedences 2015-06-30 22:48:01 -07:00
Niko Matsakis
f85f133c3e combine the tests into one big executable so as to avoid having 
to rebuild lalrpop once per test, and also avoid need to write a
makefile
 2015-06-30 08:30:01 -07:00
Niko Matsakis
445c8e69ec introduce a dummy nonterminal for start symbols automatically 2015-06-30 08:05:15 -07:00
Niko Matsakis
dd83ec0cea reorganize lalrpop so that it is a library that can be added to 
a project via build.rs, give a few examples of this in practice
 2015-06-29 22:31:14 -07:00
Niko Matsakis
5e7dd66534 work on accepting parameters etc 2015-06-29 14:20:05 -07:00
Niko Matsakis
6192b0b2a1 refactor grammar to prevent undesirable nesting of symbols and 
so forth
 2015-06-25 22:39:11 -07:00
Niko Matsakis
388fbcb495 Sort and dedup lr1 states, fix a bunch of tests. 
Change `~x:Foo` notation to just `x:Foo`
 2015-06-24 07:17:55 -07:00
Niko Matsakis
fbc59064ef Update README 2015-06-24 06:03:57 -07:00
Niko Matsakis
d82b794bbe Move lalrpop code into a subdirectory 2015-06-24 05:53:24 -07:00
Niko Matsakis
79158121ec DFA is now basically working. 2015-06-23 22:14:23 -07:00
Niko Matsakis
73c1467590 add a few more tests 2015-06-23 14:58:37 -07:00
Niko Matsakis
74cb94a739 add testing for nfa 2015-06-23 14:54:36 -07:00
Niko Matsakis
9e6fc6df49 impl NFA/DFA conversion (untested) 2015-06-23 11:51:04 -07:00
Niko Matsakis
51e1f7eb67 Add a regular expression parser and NFA construction code 2015-06-23 09:23:11 -07:00
Niko Matsakis
4379b13c9d Make type inference smarter, based on the idea that all constraints must 
have the same type; so if we see errors or cases where we cannot infer a
type, let's just take it from one of the successful alternatives. This
lets us remote the type annotation on `E` (or `T`, depending).
 2015-06-22 14:14:03 -04:00
Niko Matsakis
2d53902a4f remove the name of the grammar, which wasn't really used for anything 2015-06-22 13:31:55 -04:00
Niko Matsakis
fc377940ed revamp a bit to lay groundwork for better patterns, make sub have actions 2015-06-22 13:08:38 -04:00
Niko Matsakis
1faf1d2841 Start extracting out a utility library with a tokenizer, main 
fn, etc so I can write more tests
 2015-06-22 09:42:19 -04:00
Niko Matsakis
411ff7a6d2 avoid emitting useless warnings 2015-06-22 08:57:43 -04:00
Niko Matsakis
15f1cd1c15 It's alive! It's alive! 2015-06-22 08:51:28 -04:00
Niko Matsakis
7fa99e7c7f emit uses etc 2015-06-22 08:41:49 -04:00
Niko Matsakis
f8cc8858d7 let user declare use foo 2015-06-22 06:06:58 -04:00
Niko Matsakis
65d4e0b498 prefix all the names; add some #[cfg(test)] attributes 2015-06-22 05:56:56 -04:00
Niko Matsakis
5ee2824726 break out state code into its own module, use __ prefix more 
so that (eventually) we can bring in user-defined imports
 2015-06-22 05:49:33 -04:00
Niko Matsakis
e04d65056b generate a start fn 2015-06-22 05:16:12 -04:00
Niko Matsakis
bc4172b556 Create a main routine that generates the recursive ascent code 2015-06-21 20:56:38 -04:00
Niko Matsakis
d80403e462 add recursive ascent code; completely untested (not even reachable), 
but seemingly...complete-ish?
 2015-06-21 07:26:07 -04:00
Niko Matsakis
72be539541 intermediate checkpoint: creating rust IR, which may not be worthwhile 2015-06-20 19:43:08 -04:00
Niko Matsakis
13bc31f0ee add a random parse tree generation facility, use it to provide random inputs 2015-06-20 18:02:52 -04:00
Niko Matsakis
c9502edefd add a comment 2015-06-20 08:33:09 -04:00
Niko Matsakis
fadd3f2c66 Make a general prefix we can use for later 2015-06-20 08:32:01 -04:00
Niko Matsakis
5c71e53c6b distinguish lifetimes of the state table from the underlying grammar 2015-06-20 06:03:15 -04:00
Niko Matsakis
a661d9ee94 add an LR(1) interpreter that executes the action tables and constructs 
a parse-tree. Use is to test the results from the LR(1) table generation
algorithm.
 2015-06-20 05:43:06 -04:00
Niko Matsakis
077ed9060d build up action tables 2015-06-19 19:03:21 -04:00
Niko Matsakis
c66f7e2d40 lr1 construction seems to be working, tests are not yet really stable 2015-06-19 17:28:03 -04:00
Niko Matsakis
990f2a931a sketch out the state enumeration algorithm 2015-06-19 13:27:24 -04:00