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138 commits

Author SHA1 Message Date
Max Brunsfeld
7183f8d3e7 Fix unit reduction elimination bugs 
* Handle 'chains' of unit reductions starting in a single state
* Avoid eliminating rules which will later receive aliases
 2018-03-12 07:54:18 -07:00
Max Brunsfeld
df2430b94c Remove a C error recovery test temporarily 2018-03-08 14:18:12 -08:00
Max Brunsfeld
0810971f3e 🔥 symbol iterator API 
This idea was never fully baked.
 2018-03-08 14:16:37 -08:00
Max Brunsfeld
e927d02f43 Allow reusing leaf nodes unless the next leaf has changes 2018-03-07 17:44:54 -08:00
Max Brunsfeld
52087de4f0 Remove the concept of fragile reductions 
They were a vestige of when Tree-sitter did sentential form-based
incremental parsing (as opposed to simply state matching). This was
elegant but not compatible with GLR as far as I could tell.
 2018-03-02 14:51:54 -08:00
Max Brunsfeld
07fa3eb386 Fix capture of corpus descriptions in integration tests 2018-03-02 11:27:41 -08:00
Max Brunsfeld
a8d539023d Handle subdirectories existing in parsers' examples folders 2018-03-02 11:04:08 -08:00
Max Brunsfeld
d3ac345644 When parsing corpus, anchor header pattern to line start 2018-03-02 09:46:33 -08:00
Max Brunsfeld
82c7e170b3 Fix case where loop was created in the parse stack 
Fixes #133
 2018-03-02 09:05:20 -08:00
Max Brunsfeld
2daae48fe0 Handle conflicts in repeat rules after external tokens 
Signed-off-by: Rick Winfrey <rewinfrey@github.com>
 2018-02-14 11:24:51 -08:00
Max Brunsfeld
facafcd6e4 Pass row/column position to input seek method 2018-02-14 07:31:49 -08:00
Max Brunsfeld
299a146b66 Balance repetition trees after parsing 2018-02-12 11:41:56 -08:00
Max Brunsfeld
8c29841adf Represent repetitions with associative structure 2018-02-12 11:41:56 -08:00
Max Brunsfeld
46dcd53090 Do not insert missing tokens if halt_on_error option is passed 2018-01-24 14:04:55 -08:00
Max Brunsfeld
b520bdd2d5
Merge pull request #126 from tree-sitter/mb-fix-epsilon-rule-loophole 
Don't allow an epsilon start rule if it is used in other rules
 2018-01-23 17:19:55 -08:00
Max Brunsfeld
2e4f76c164 Don't allow an epsilon start rule if it is used in other rules 2018-01-23 17:05:28 -08:00
Max Brunsfeld
315dff3285 Add an API for getting a node's child index 2018-01-09 14:01:36 -08:00
Max Brunsfeld
f653f2b3bb Add ts_node_first_{child,named_child}_for_byte methods 2018-01-09 13:44:59 -08:00
Max Brunsfeld
13adfe4927 Update error corpus 2017-12-29 16:21:04 -08:00
Max Brunsfeld
6304a3bcd1 Make it easier to run tests with debug graphs 2017-12-28 12:41:23 -08:00
Max Brunsfeld
addeb6c4c1 Allocate and free trees using an object pool 2017-12-27 10:34:29 -08:00
Max Brunsfeld
0e69da37a5 Return a character count from the lexer's get_column method 2017-12-20 16:26:38 -08:00
Max Brunsfeld
e5851fd9b9 Don't use non-existent \a syntax in test grammars 2017-12-13 12:21:28 -08:00
Max Brunsfeld
f426b61e7c Fix expectation around preproc directive in C error test 2017-12-13 12:21:13 -08:00
Max Brunsfeld
fbcefe25f7 Avoid creating external tokens that start after they end 2017-12-07 11:50:27 -08:00
Max Brunsfeld
90629bd45a Add some assertions to the fixture grammar tests 2017-12-07 11:50:27 -08:00
Max Brunsfeld
493db39363 Never move the start rule of a grammar into the lexical grammar 
This preserves a useful invariant that the root node of the AST is never
a token.
 2017-12-07 11:50:27 -08:00
Max Brunsfeld
36c2b685b9 Always invalidate old chunk of text when parsing after an edit 2017-10-04 15:09:46 -07:00
Max Brunsfeld
c0073c5b72 Update error corpus to reflect C grammar changes 2017-10-04 15:06:12 -07:00
Max Brunsfeld
d342b61ede Re-enable JS fuzzing example test 2017-09-14 11:39:08 -07:00
Max Brunsfeld
9d67a98510 Merge pull request #103 from tree-sitter/python-assertion-failure 
Assertion failure in parser__advance
 2017-09-14 11:38:22 -07:00
Max Brunsfeld
d291af9a31 Refactor error comparisons 
* Deal with mergeability outside of error comparison function
* Make `better_version_exists` function pure (don't halt other versions
as a side effect).
* Tweak error comparison logic

Signed-off-by: Rick Winfrey <rewinfrey@github.com>
 2017-09-13 16:38:15 -07:00
Phil Turnbull
d9a0fbc210 Add testcase for parser__advance assertion failure 
The python testcase decodes to:
```
00000000  35 63 6f 6e 88 2c 29 33  2c 2c 2c 2c 63 6f 6e 88  |5con.,)3,,,,con.|
00000010  2c 2a 2c 3a 35 63 6f 6e  2c                       |,*,:5con,|
```

which triggers:
```
Assertion failed: ((uint32_t)0 < (&reduction.slices)->size), function parser__advance, file src/runtime/parser.c, line 1202.
```
 2017-09-13 13:25:31 -04:00
Max Brunsfeld
65ed4281d4 Exclude zeros from speeds reported in benchmarks 2017-09-12 16:30:38 -07:00
Max Brunsfeld
99d048e016 Simplify error recovery; eliminate recovery states 
The previous approach to error recovery relied on special error-recovery
states in the parse table. For each token T, there was an error recovery
state in which the parser looked for *any* token that could follow T.
Unfortunately, sometimes the set of tokens that could follow T contained
conflicts. For example, in JS, the token '}' can be followed by the
open-ended 'template_chars' token, but also by ordinary tokens like
'identifier'. So with the old algorithm, when recovering from an
unexpected '}' token, the lexer had no way to distinguish identifiers
from template_chars.

This commit drops the error recovery states. Instead, when we encounter
an unexpected token T, we recover from the error by finding a previous
state S in the stack in which T would be valid, popping all of the nodes
after S, and wrapping them in an error.

This way, the lexer is always invoked in a normal parse state, in which
it is looking for a non-conflicting set of tokens. Eliminating the error
recovery states also shrinks the lex state machine significantly.

Signed-off-by: Rick Winfrey <rewinfrey@github.com>
 2017-09-11 15:22:52 -07:00
Max Brunsfeld
8b3941764f Make outstanding_allocation_indices return a vector, not a set 2017-09-07 17:48:44 -07:00
Max Brunsfeld
9d668c5004 Move incompatible token map into LexTableBuilder 2017-08-31 15:46:37 -07:00
Max Brunsfeld
4daf22ba0c Read files in binary mode in tests 2017-08-09 10:07:03 -07:00
Max Brunsfeld
90eef13aeb Fix windows directory listing function 2017-08-08 22:21:39 -07:00
Max Brunsfeld
d4b2c58dc8 Fix another hard-coded / as a path separator 2017-08-08 22:08:27 -07:00
Max Brunsfeld
f6325746aa Provide symbol metadata with dummy language in stack test 2017-08-08 17:47:24 -07:00
Max Brunsfeld
d0dc164013 Disable the default behavior of printing a logo, Microsoft. 2017-08-08 17:35:50 -07:00
Max Brunsfeld
0919f5588b Disable fuzzing example test for now 2017-08-08 17:35:16 -07:00
Max Brunsfeld
0ba6188bab Construct paths portably in test_grammars.cc 2017-08-08 17:25:43 -07:00
Max Brunsfeld
7587353ab6 Avoid unicode literals in tests 
MSVC tries to normalize them based on the current locale.
 2017-08-08 17:10:08 -07:00
Max Brunsfeld
17b58f41e1 Disable optimization when compiling grammars during tests 2017-08-08 17:09:34 -07:00
Max Brunsfeld
17310769a4 Fix usage of .so instead of .dll on windows 2017-08-08 15:20:38 -07:00
Max Brunsfeld
bb7889fac5 Don't rely on PWD env var on windows 2017-08-08 15:04:27 -07:00
Max Brunsfeld
34b5340d71 Fix paths to corpus files on windows 2017-08-08 14:06:11 -07:00
Max Brunsfeld
cc7277fd7d Avoid using IsNull bandit assertion 2017-08-08 12:52:35 -07:00