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32 commits

Author SHA1 Message Date
David Majda ee8c121676 Use labeled expressions and variables instead of $1, $2, etc. 
Labeled expressions lead to more maintainable code and also will allow
certain optimizations (we can ignore results of expressions not passed
to the actions).

This does not speed up the benchmark suite execution statistically
significantly on V8.

Detailed results (benchmark suite totals):

---------------------------------
 Test #     Before       After
---------------------------------
      1   28.43 kB/s   28.46 kB/s
      2   28.38 kB/s   28.56 kB/s
      3   28.22 kB/s   28.58 kB/s
      4   28.76 kB/s   28.55 kB/s
      5   28.57 kB/s   28.48 kB/s
---------------------------------
Average   28.47 kB/s   28.53 kB/s
---------------------------------

Mozilla/5.0 (X11; U; Linux i686; en-US) AppleWebKit/533.4 (KHTML, like Gecko) Chrome/5.0.375.55 Safari/533.4
 2010-06-07 09:23:04 +02:00
David Majda 52704593cd Allow labeled expressions in the metagrammar (without any meaning yet) 2010-05-31 16:35:03 +02:00
David Majda 698564a3c2 Replace ":" after a rule name with "=" 
I'll introduce labelled expressions shortly and I want to use ":" as a
label-expression separator. This change avoids conflict between the two
meanings of ":". (What would e.g. "foo: 'bar'" mean?  Rule "foo"
matching string "bar", or string "bar" labelled "foo"?)
 2010-05-31 16:31:45 +02:00
David Majda 76ed63c86e AST refactoring 6/6: Get rid of the |Grammar| namespace 2010-05-21 19:00:00 +02:00
David Majda 85930cbcfe Reorder AST stuff more consistently and sensibly 
There is no functional change in this commit.
 2010-05-08 17:50:20 +02:00
David Majda e3aa4df090 Changed action parameter processing to avoid the arguments object. 
The action now computes the number of passed parameters during the code
generation and the parameters are declared directly as $1, $2, etc. in the
generated function.

This does not speed up the benchmark suite execution statistically significantly
on V8.

Detailed results (benchmark suite totals):

---------------------------------
 Test #     Before       After
---------------------------------
      1   28.68 kB/s   29.08 kB/s
      2   28.77 kB/s   28.72 kB/s
      3   28.89 kB/s   28.78 kB/s
      4   28.84 kB/s   28.57 kB/s
      5   28.86 kB/s   28.84 kB/s
---------------------------------
Average   28.81 kB/s   28.80 kB/s
---------------------------------

Mozilla/5.0 (X11; U; Linux i686; en-US) AppleWebKit/533.2 (KHTML, like Gecko) Chrome/5.0.342.9 Safari/533.2
 2010-04-24 14:35:05 +02:00
David Majda b2f230fad2 Added Optional AST node. 
This does not speed up the benchmark suite execution statistically significantly
on V8.

Detailed results (benchmark suite totals):

---------------------------------
 Test #     Before       After
---------------------------------
      1   28.84 kB/s   28.75 kB/s
      2   28.76 kB/s   28.69 kB/s
      3   28.72 kB/s   28.69 kB/s
      4   28.84 kB/s   28.93 kB/s
      5   28.82 kB/s   28.70 kB/s
---------------------------------
Average   28.80 kB/s   28.75 kB/s
---------------------------------

Mozilla/5.0 (X11; U; Linux i686; en-US) AppleWebKit/533.2 (KHTML, like Gecko)
Chrome/5.0.342.9 Safari/533.2
 2010-04-21 21:19:48 +02:00
David Majda e5df8284b5 Added AndPredicate AST node. 
This does not speed up the benchmark suite execution statistically significantly
on V8.

Detailed results (benchmark suite totals):

---------------------------------
 Test #     Before       After
---------------------------------
      1   28.72 kB/s   28.84 kB/s
      2   28.84 kB/s   28.76 kB/s
      3   28.83 kB/s   28.72 kB/s
      4   28.81 kB/s   28.84 kB/s
      5   28.76 kB/s   28.82 kB/s
---------------------------------
Average   28.79 kB/s   28.80 kB/s
---------------------------------

Mozilla/5.0 (X11; U; Linux i686; en-US) AppleWebKit/533.2 (KHTML, like Gecko) Chrome/5.0.342.9 Safari/533.2
 2010-04-21 12:02:45 +02:00
David Majda c3c1c79665 Added OneOrMore AST node. 
This speeds up the benchmark suite execution by 1.08% on V8.

Detailed results (benchmark suite totals):

---------------------------------
 Test #     Before       After
---------------------------------
      1   28.38 kB/s   28.72 kB/s
      2   28.52 kB/s   28.84 kB/s
      3   28.41 kB/s   28.83 kB/s
      4   28.47 kB/s   28.81 kB/s
      5   28.64 kB/s   28.76 kB/s
---------------------------------
Average   28.48 kB/s   28.79 kB/s
---------------------------------

Mozilla/5.0 (X11; U; Linux i686; en-US) AppleWebKit/533.2 (KHTML, like Gecko) Chrome/5.0.342.9 Safari/533.2
 2010-04-20 21:09:23 +02:00
David Majda 3f5cb8850c Fixed PEG.buildParser's documentation and added a test. 2010-04-19 20:43:03 +02:00
David Majda 48da65d08e PEG.buildParser now accepts grammars only in string format. 2010-04-19 20:39:59 +02:00
David Majda 927f2d65c9 Exception tests also test exception messages. 2010-04-19 20:18:15 +02:00
David Majda b5ac4f0c4a Refactored helpers for testing of thrown exceptions. 2010-04-19 20:07:48 +02:00
David Majda 4b51e6a6d3 Quote null characters in regexps, IE does not like them. 2010-04-16 08:53:02 +02:00
David Majda e79e869993 Compensate for IE's lack of Array.prototype.indexOf function. 2010-04-14 21:00:09 +02:00
David Majda 05381fedfa Fixed the inverted empty character class handling test. 2010-04-14 20:59:41 +02:00
David Majda e63f64a3d5 Make the generated parsers standalone (no runtime is required). 
This and also speeds up the benchmark suite execution by 7.83 % on V8.

Detailed results (benchmark suite totals):

---------------------------------
 Test #     Before       After
---------------------------------
      1   26.17 kB/s   28.16 kB/s
      2   26.05 kB/s   28.16 kB/s
      3   25.99 kB/s   28.10 kB/s
      4   26.13 kB/s   28.11 kB/s
      5   26.14 kB/s   28.07 kB/s
---------------------------------
Average   26.10 kB/s   28.14 kB/s
---------------------------------

Mozilla/5.0 (X11; U; Linux i686; en-US) AppleWebKit/533.2 (KHTML, like Gecko) Chrome/5.0.342.7 Safari/533.2
 2010-04-12 19:06:04 +02:00
David Majda 74830d4f8f Sort expected strings in the error messages. 2010-04-11 15:34:30 +02:00
David Majda 37521cffa5 Error messages now do not contain duplicities. 2010-04-11 15:30:02 +02:00
David Majda f87bcd6332 Added tests for error messages displayed when a character class match fails. 2010-03-21 15:24:03 +01:00
David Majda 4f4bb34ded Implemented negative character classes (e.g. [^a-z]). 2010-03-20 12:08:45 +01:00
David Majda 56ffa94cc7 PEG.buildParser reports left recursion (both direct and indirect). 2010-03-19 17:10:54 +01:00
David Majda a3ecf768ca Fixed missing referenced rules test. 2010-03-19 16:36:43 +01:00
David Majda 3a65316416 PEG.buildParser reports missing referenced rules. 2010-03-19 11:15:53 +01:00
David Majda 2e94dce944 Improved tests of the "arithmetics" grammar. 2010-03-19 10:28:24 +01:00
David Majda a43d1b33e3 Bootstrapped the grammar parser, yay! I should have done this long ago. 2010-03-13 15:18:57 +01:00
David Majda 636ceb2719 Metagrammar recognizes JavaScript-like comments. 2010-03-13 09:49:06 +01:00
David Majda 452243d450 Improved error reporting for predicates a bit. 2010-03-08 12:15:52 +01:00
David Majda 69906e9730 Do not recognize \uFEFF as whitespace in the metagrammar since it does not work with Rhino. 2010-03-08 11:37:03 +01:00
David Majda bddb65ab9b Improved & simplified error handling code. 2010-03-08 09:58:23 +01:00
David Majda b86a219c86 Ensure that the same grammar and start rule always generate exactly the same parser. 2010-03-07 21:14:07 +01:00
David Majda c3dd696a3e Initial commit. 2010-03-07 20:41:02 +01:00