Calvin Rose
612a245961
More work on peg. Disable indexed backrefs and replace substitution
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with accumulation.
2019-01-16 21:11:55 -05:00
Calvin Rose
82cddef5bb
Update man page and add early exit to number scanning for parser.
2019-01-16 12:32:33 -05:00
Calvin Rose
d0fc29338c
Add error special form in Peg to allow construction of grammar errors
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for more useful grammars that could eventually be used in a compiler.
2019-01-15 16:04:47 -05:00
Calvin Rose
4eeadd7463
Add optional form to peg (shorthand for (between 0 1 patt)).
2019-01-15 14:08:03 -05:00
Calvin Rose
3a9b50ea4a
Update peg doc and remame some peg specials.
2019-01-14 22:17:13 -05:00
Calvin Rose
1304f9263b
Update peg docs and make bad backrefs not error the whole pattern, but just cause the current match attempt to fail.
2019-01-14 21:47:55 -05:00
Calvin Rose
90313afd40
Update PEG documentation and peg syntax.
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Disable tail calls in the root scope for better
stacktraces, as the root scope may contain a single call
to a failing function, as in the case of the test suite.
2019-01-14 20:41:32 -05:00
Calvin Rose
99f176f37b
Fix windows build warnings.
2019-01-14 17:48:32 -05:00
Calvin Rose
d0ec89c7c1
Update Matchtime captures to not include all of the
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matched text automatically, and fix pattern recursion
in grammars.
2019-01-14 17:44:21 -05:00
Calvin Rose
170e785b72
Fix recursion in grammars.
2019-01-14 15:06:35 -05:00
Calvin Rose
192705113e
Add Matchtime captures to peg (Equivalent to LPegs lpeg.Cmt).
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This allows that pattern to call an external function to
check if some text should match or not. This allows for
matching any possible language a computer can recognize.
2019-01-14 11:45:45 -05:00
Calvin Rose
2cd489b9d4
Address windows build warnings.
2019-01-14 00:09:27 -05:00
Calvin Rose
ff0d3a0081
Compile pegs to bytecode with (peg/compile). Peg
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performance is improved, and peg syntax has been expanded with a few
more keywords.
2019-01-13 23:54:41 -05:00
Calvin Rose
282c02c475
Update comments and text.
2019-01-12 20:22:03 -05:00
Calvin Rose
798c88b4c8
Update peg to allow functions over captures. Update C API
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to make janet function calls easier and faster from C (still
needs an object pool for fibers, though). Fix bug in scan-number
and add many more peg tests.
2019-01-12 17:31:15 -05:00
Calvin Rose
83f4a11bf3
Add some more tests, add parameterized captures to patterns,
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and fix some bugs.
2019-01-12 11:04:47 -05:00
Calvin Rose
d7626f8c57
Add more capturing capabilities including substitutions, as well
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as back references for PEGs. More documentation is needed for PEG
syntax, but the amount required will need an external document, not
just a docstring.
2019-01-12 10:16:25 -05:00
Calvin Rose
1efca2ebe7
Add some preliminary capturing ability to PEGs.
2019-01-11 21:09:49 -05:00
Calvin Rose
40845b5c1b
Initial peg implementation. Tree walk interpretted with
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no captures, so not yet ready.
2019-01-11 19:22:24 -05:00
