491744f893
reuse of -> label on multiple alts in rule caused dup ctx object defs.
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[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9868]
2012-01-14 13:12:35 -08:00
1ddf609e25
labels on tokens in left-recursive rules caused codegen exception.
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[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9866]
2012-01-14 10:18:19 -08:00
73793898a9
update grammars
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[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9856]
2012-01-11 11:21:05 -08:00
848c6e4313
This change is a major restructuring of how left recursive rules are transformed. Previously I simply rewrote the grammar and ANTLR was none the wiser. However, it quickly became apparent that ANTLR needed to do many different things for recursive rules so I had to insert transformation later in the pipeline. Specifically, I needed it after Rule object creation. I made a special LeftRecursiveRule object that track information collected during transformation so that I could use it later. I made major changes to the left recursion templates as well as the little code snippets in Java.stg. I created a new template called LeftRecursiveRuleFunction an accompanying model object that handles the special case, even though there is some duplication. the biggest difference in the grammar is the introduction of => ID notation on any outermost alternative. This information is not added to the tree, instead the ALT node is annotated with the ID. Rule.getAltLabels() now looks also in the LeftRecursiveRuleAltInfo objects. I have moved to the left recursion transformation to its own object and have moved some objects into the analysis package. Further, I have split out the Rule object creation into its own RuleCollector. I renamed discoverAlt in the grammar tree visitor to be discoverOuterAlt an added discoverAlt so we can get information about individual alts even inside subrules. Listeners always get an event for the generic rule context, which is used if there is no specific label for an alternative. Added a list of iteration operations for LL(*) subrules. Split buildRuleFunction into buildLeftRecursiveRuleFunction and one for normal rule function creation. I have to insert lots of extra code to manage the contexts, but of course it's all done using the templates. As long as those templates are correct, this code generation mechanism will work. I removed the st field from the parser rule context. I injected the left recursion transformation inside the SemanticPipeline. Visitor dispatch methods are always added to the generated context structures. Fixed some unit tests. About 24 fail.
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[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9854]
2012-01-11 11:00:05 -08:00
742a08862f
Merging dev changes to main
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[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9853]
2012-01-09 10:26:23 -08:00
e8ae8ee005
labels allowed in left recursive rule refs.
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[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9834]
2012-01-05 18:35:20 -08:00
4ae23f4a64
* 1+2*3 now gives new parse tree: (e (e 1) + (e (e 2) * (e 3))) See CHANGES.txt now too
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[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9833]
2012-01-05 12:27:14 -08:00
2e8a5f391a
no more -trace
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[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9826]
2012-01-04 17:41:42 -08:00
78c7c254a0
rm cmt'd out prints
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[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9825]
2012-01-04 17:40:59 -08:00
7d68546dbe
rm prints
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[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9824]
2012-01-04 17:37:15 -08:00
e7f6ba5ac1
lr rules now gen only 1 rule e->e not e->e_ etc... altered tests to build parse trees.
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[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9823]
2012-01-04 17:36:24 -08:00
e29b11882d
fix unit tests
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[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9816]
2012-01-04 15:47:52 -08:00
b2269a22f4
not needed
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[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9815]
2012-01-04 15:42:55 -08:00
8099cec3bd
Added ctx to visitTerminal in parse tree listener. That should be useful information. made commensurate change in the parse tree walker to make sure I have a proper context to send to the visitTerminal method. renamed a few fields of parser/lexer to have _ in front to avoid name collisions with user actions. change the name of the listener method so that they're more explicit using the terms Error and Parser to identify what kind of listener we are adding or removing. Added a default TraceListener to Parser so that we can call setTrace(true) to have it start dumping out information as a first step in the debugging process. there are now multiple parse tree listeners possible because I made a list. we may want to pass in multiple actions to the parser.
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[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9795]
2012-01-03 12:46:18 -08:00
1d6bbb08c3
kill
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[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9793]
2012-01-03 12:30:21 -08:00
2d9139ca4d
remove % from ActionSplitter.g
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[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9790]
2012-01-03 11:04:12 -08:00
5c3c8d6e7a
Added TokenFactory, CommonTokenFactory. Update the parser in the lexer with methods to set the factory. Alter the default error strategy and the lexer to use the factory. The parser's set token factory method updates the token source, usually the lexer, and the error handling strategy. I had to add the set token factory method to token source as well to make all of this work.
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[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9789]
2012-01-03 10:58:01 -08:00
3aeeb2b277
rename BaseREcognizer as Parser
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[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9781]
2012-01-02 18:36:59 -08:00
1b04195a2f
removed all template / AST rewrite stuff; massive change; added -encoding tool option
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[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9780]
2012-01-02 18:13:16 -08:00
ddb68aa948
new example
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[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9778]
2012-01-02 14:07:11 -08:00
3d620734af
Merging CL9604 to main (optimized string literals in generated code)
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[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9777]
2012-01-02 12:08:18 -08:00
353ddc6c2b
using wrong map class
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[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9767]
2012-01-01 10:27:51 -08:00
dff466be66
literal rules like A:'a' not seen in modes; weren't in .tokens files
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[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9766]
2011-12-31 17:26:48 -08:00
a923ad8765
Major update to v4. I backed out a change I made on Christmas then mistakenly prevented any lexer DFA creation. Per http://www.antlr.org/wiki/display/~admin/2011/12/29/Flaw+in+ANTLR+v3+LL%28*%29+analysis+algorithm I fixed a major flaw in ANTLR's notion of context. To do that, I needed to create a new LoopEndState, with all of its fanout to the serialization and parser ATN construction. got a very good start on ParserATNPathFinder, which uses basic recursion to find all possible paths and return a tree with the possibilities. I left it in the condition where he would sometimes loop forever; it needs to track sets of configurations in the busy set; it using states at the moment. added a new signal from the interpreter: reportAttemptingFullContext. I fixed a bug where configuration sets derived from a configuration that had reachesIntoOuterContext>0 were not being considered as dipping into the outer context. The ambiguity checker needed to switch so that a check for exact matches not suffixes when doing full context. It's faster at the very least for full context. added some more support routines to DFA. Added TraceTree in support of the new ParserATNPathFinder.
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[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9764]
2011-12-29 17:04:40 -08:00
3a3ed27e60
add some tests
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[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9763]
2011-12-28 19:49:37 -08:00
52396d8f5f
removed method call
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[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9762]
2011-12-27 16:31:09 -08:00
9853061093
added null chk
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[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9759]
2011-12-27 14:32:19 -08:00
24c572d055
oops. antlr was ok, it was javalr grammar.
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[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9754]
2011-12-26 17:14:29 -08:00
299c29d927
more lexer rule specialization in parser. got antlr almost back to working with new [Aa] notation in lexer.
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[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9753]
2011-12-26 17:09:01 -08:00
3fae7cc880
rm unnecessary code
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[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9751]
2011-12-26 16:56:51 -08:00
d9efffd104
Add [abc] syntax to allow set of char in lexer; args aren't allowed so unambig.
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[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9750]
2011-12-26 15:58:40 -08:00
6fa5e52d5e
added => skip, channel(99), more, mode(xx), push(xx), pop lexer syntax. separated lexer rules from others in parser / AST now.
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[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9749]
2011-12-26 15:14:49 -08:00
6daa66f83f
no more resolved bit in config. use ATNConfigSet all over. final clean up of ATN sim.
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[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9741]
2011-12-25 12:01:24 -08:00
bb48deb354
tweak to dotgenerator, make parserinterp using new atn sim
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[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9645]
2011-12-16 18:15:56 -08:00
6b673a3b2e
track stats properly
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[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9643]
2011-12-16 16:00:11 -08:00
ebd1fbb63d
within 2 or 3 unit test of where I was before I got it the ATN simulator
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[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9642]
2011-12-16 15:07:28 -08:00
3d133e9417
broke out fullctx tests, some fixes.
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[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9636]
2011-12-16 09:43:29 -08:00
1e8548297e
mv comment over and make sure that the tree parsers use the new ATN engine
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[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9635]
2011-12-15 16:14:49 -08:00
5ad1505fdb
almost got new ATN engine working; separated .* nongreedy tests, reorg args on reporting methods
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[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9627]
2011-12-15 11:03:41 -08:00
92279bd6db
almost got prediction working
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[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9600]
2011-12-13 18:10:04 -08:00
3fb7466a80
another big reorg and fixed unit test. lots more sharing and splitting into methods; same 21/807 tests fail; java works.
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[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9563]
2011-12-11 14:34:32 -08:00
b379a56c7f
was playing with test java
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[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9561]
2011-12-11 13:02:58 -08:00
c32b703555
quote literal was not translated properly. updated Lexer to convert antlr literals to target literals properly. added unit test.
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[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9557]
2011-12-11 10:37:27 -08:00
c59b63c79b
turn on in-VM exec for testing.
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[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9551]
2011-12-10 18:17:29 -08:00
12aa6c2404
fix unit tests, bug in collecting preds and testing in DFA state
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[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9550]
2011-12-10 17:28:17 -08:00
b1c7edb8d8
moved empty context chk for retry
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altered args on reporting methods
reporting methods moved from parser to error strategy
fixed full ctx retry in DFA (used to only work in ATN)
i record conflictSet not just boolean in DFA
added debugging support to BaseRecognizer
added DiagnosticErrorStrategy
[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9549]
2011-12-10 16:24:41 -08:00
d170d89ce6
wasn't using some args
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[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9547]
2011-12-09 18:15:05 -08:00
131e9f7686
added comments, working on parser interpreter (not prediction) reorg. adding ParserInterpreter. adding unit tests.
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[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9546]
2011-12-09 16:35:21 -08:00
63168c5577
added more dbg prints, turned on context sensitivity in test java lr.
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[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9545]
2011-12-07 17:47:08 -08:00
9173367a1e
fix unit test
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[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9544]
2011-12-07 13:27:22 -08:00
parrt
sharwell