Different errors returned for cache: true vs false
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Ali Tavakoli
Aug 26, 2016, 2:26:54 PM8/26/16
to PEG.js: Parser Generator for JavaScript
Is it expected that enabling/disabling the cache affects error returned when a match fails? For some grammars, when the cache is enabled, a failed match will be reported in an earlier part of the input; and when disabled, it gets reported closer to or at the token that failed.
... which accepts input like this (assume the grammar has to be structured this way to construct the final AST; more details can be provided if it helps):
Let's say I input the above, but I misspell "check" as "chekc". With parsing with cache disabled, I get the following error (as expected):
For example, suppose the following grammar (I've removed the actions to make it less cluttered; available upon request):
Program
= SourceElements?
SourceElements
= RuleStatement (__ RuleStatement)*
EOS
= _ ("\r"? "\n" / !.)
_
= [ \t]*
__
= [ \t\r\n]*
GroupStatement
= "group" _ ($[a-z]+)? _ "{" EOS
__ GroupBody? "}" EOS
GroupBody
= (!RuleStatement GroupBodyStatement __)*
GroupLeadingRuleStatement
GroupLeadingRuleStatement
= RuleStatement __ (GroupBody __)?
GroupBodyStatement
= VariableStatement
/ RuleStatement
RuleStatement
= GroupStatement
/ CheckStatement
VariableStatement
= "var" _ id:$[a-z]+ EOS
CheckStatement
= "check" _ id:$[a-z]+ EOS
... which accepts input like this (assume the grammar has to be structured this way to construct the final AST; more details can be provided if it helps):
group a {
group b {
var c
group d {
var e
check f
}
}
}
Let's say I input the above, but I misspell "check" as "chekc". With parsing with cache disabled, I get the following error (as expected):
Line 6, column 7: Expected "check", "group", "var", or [ \t\r\n] but "c" found.
But with cache enabled, the same input gives me this error:
Line 2, column 3: Expected "var", "}", or [ \t\r\n] but "g" found.
Is this expected? Should the cache affect where a failed match is identified?
This was tested on v0.10 (the online version & a local clone).
Here are the respective traces:
(cached)
1:1-1:1 rule.enter Program
1:1-1:1 rule.enter SourceElements
1:1-1:1 rule.enter RuleStatement
1:1-1:1 rule.enter GroupStatement
1:6-1:6 rule.enter _
1:6-1:7 rule.match _
1:8-1:8 rule.enter _
1:8-1:9 rule.match _
1:10-1:10 rule.enter EOS
1:10-1:10 rule.enter _
1:10-1:10 rule.match _
1:10-2:1 rule.match EOS
2:1-2:1 rule.enter __
2:1-2:3 rule.match __
2:3-2:3 rule.enter GroupBody
2:3-2:3 rule.enter RuleStatement
2:3-2:3 rule.enter GroupStatement
2:8-2:8 rule.enter _
2:8-2:9 rule.match _
2:10-2:10 rule.enter _
2:10-2:11 rule.match _
2:12-2:12 rule.enter EOS
2:12-2:12 rule.enter _
2:12-2:12 rule.match _
2:12-3:1 rule.match EOS
3:1-3:1 rule.enter __
3:1-3:5 rule.match __
3:5-3:5 rule.enter GroupBody
3:5-3:5 rule.enter RuleStatement
3:5-3:5 rule.enter GroupStatement
3:5-3:5 rule.fail GroupStatement
3:5-3:5 rule.enter CheckStatement
3:5-3:5 rule.fail CheckStatement
3:5-3:5 rule.fail RuleStatement
3:5-3:5 rule.enter GroupBodyStatement
3:5-3:5 rule.enter VariableStatement
3:8-3:8 rule.enter _
3:8-3:9 rule.match _
3:10-3:10 rule.enter EOS
3:10-3:10 rule.enter _
3:10-3:10 rule.match _
3:10-4:1 rule.match EOS
3:5-4:1 rule.match VariableStatement
3:5-4:1 rule.match GroupBodyStatement
4:1-4:1 rule.enter __
4:1-4:5 rule.match __
4:5-4:5 rule.enter RuleStatement
4:5-4:5 rule.enter GroupStatement
4:10-4:10 rule.enter _
4:10-4:11 rule.match _
4:12-4:12 rule.enter _
4:12-4:13 rule.match _
4:14-4:14 rule.enter EOS
4:14-4:14 rule.enter _
4:14-4:14 rule.match _
4:14-5:1 rule.match EOS
5:1-5:1 rule.enter __
5:1-5:7 rule.match __
5:7-5:7 rule.enter GroupBody
5:7-5:7 rule.enter RuleStatement
5:7-5:7 rule.enter GroupStatement
5:7-5:7 rule.fail GroupStatement
5:7-5:7 rule.enter CheckStatement
5:7-5:7 rule.fail CheckStatement
5:7-5:7 rule.fail RuleStatement
5:7-5:7 rule.enter GroupBodyStatement
5:7-5:7 rule.enter VariableStatement
5:10-5:10 rule.enter _
5:10-5:11 rule.match _
5:12-5:12 rule.enter EOS
5:12-5:12 rule.enter _
5:12-5:12 rule.match _
5:12-6:1 rule.match EOS
5:7-6:1 rule.match VariableStatement
5:7-6:1 rule.match GroupBodyStatement
6:1-6:1 rule.enter __
6:1-6:7 rule.match __
6:7-6:7 rule.enter RuleStatement
6:7-6:7 rule.enter GroupStatement
6:7-6:7 rule.fail GroupStatement
6:7-6:7 rule.enter CheckStatement
6:7-6:7 rule.fail CheckStatement
6:7-6:7 rule.fail RuleStatement
6:7-6:7 rule.enter GroupBodyStatement
6:7-6:7 rule.enter VariableStatement
6:7-6:7 rule.fail VariableStatement
6:7-6:7 rule.enter RuleStatement
6:7-6:7 rule.fail RuleStatement
6:7-6:7 rule.fail GroupBodyStatement
6:7-6:7 rule.enter GroupLeadingRuleStatement
6:7-6:7 rule.enter RuleStatement
6:7-6:7 rule.fail RuleStatement
6:7-6:7 rule.fail GroupLeadingRuleStatement
5:7-5:7 rule.fail GroupBody
4:5-4:5 rule.fail GroupStatement
4:5-4:5 rule.enter CheckStatement
4:5-4:5 rule.fail CheckStatement
4:5-4:5 rule.fail RuleStatement
4:5-4:5 rule.enter GroupBodyStatement
4:5-4:5 rule.enter VariableStatement
4:5-4:5 rule.fail VariableStatement
4:5-4:5 rule.enter RuleStatement
4:5-4:5 rule.fail RuleStatement
4:5-4:5 rule.fail GroupBodyStatement
4:5-4:5 rule.enter GroupLeadingRuleStatement
4:5-4:5 rule.enter RuleStatement
4:5-4:5 rule.fail RuleStatement
4:5-4:5 rule.fail GroupLeadingRuleStatement
3:5-3:5 rule.fail GroupBody
2:3-2:3 rule.fail GroupStatement
2:3-2:3 rule.enter CheckStatement
2:3-2:3 rule.fail CheckStatement
2:3-2:3 rule.fail RuleStatement
2:3-2:3 rule.enter GroupBodyStatement
2:3-2:3 rule.enter VariableStatement
2:3-2:3 rule.fail VariableStatement
2:3-2:3 rule.enter RuleStatement
2:3-2:3 rule.fail RuleStatement
2:3-2:3 rule.fail GroupBodyStatement
2:3-2:3 rule.enter GroupLeadingRuleStatement
2:3-2:3 rule.enter RuleStatement
2:3-2:3 rule.fail RuleStatement
2:3-2:3 rule.fail GroupLeadingRuleStatement
2:3-2:3 rule.fail GroupBody
1:1-1:1 rule.fail GroupStatement
1:1-1:1 rule.enter CheckStatement
1:1-1:1 rule.fail CheckStatement
1:1-1:1 rule.fail RuleStatement
1:1-1:1 rule.fail SourceElements
1:1-1:1 rule.match Program
(uncached)
1:1-1:1 rule.enter Program
1:1-1:1 rule.enter SourceElements
1:1-1:1 rule.enter RuleStatement
1:1-1:1 rule.enter GroupStatement
1:6-1:6 rule.enter _
1:6-1:7 rule.match _
1:8-1:8 rule.enter _
1:8-1:9 rule.match _
1:10-1:10 rule.enter EOS
1:10-1:10 rule.enter _
1:10-1:10 rule.match _
1:10-2:1 rule.match EOS
2:1-2:1 rule.enter __
2:1-2:3 rule.match __
2:3-2:3 rule.enter GroupBody
2:3-2:3 rule.enter RuleStatement
2:3-2:3 rule.enter GroupStatement
2:8-2:8 rule.enter _
2:8-2:9 rule.match _
2:10-2:10 rule.enter _
2:10-2:11 rule.match _
2:12-2:12 rule.enter EOS
2:12-2:12 rule.enter _
2:12-2:12 rule.match _
2:12-3:1 rule.match EOS
3:1-3:1 rule.enter __
3:1-3:5 rule.match __
3:5-3:5 rule.enter GroupBody
3:5-3:5 rule.enter RuleStatement
3:5-3:5 rule.enter GroupStatement
3:5-3:5 rule.fail GroupStatement
3:5-3:5 rule.enter CheckStatement
3:5-3:5 rule.fail CheckStatement
3:5-3:5 rule.fail RuleStatement
3:5-3:5 rule.enter GroupBodyStatement
3:5-3:5 rule.enter VariableStatement
3:8-3:8 rule.enter _
3:8-3:9 rule.match _
3:10-3:10 rule.enter EOS
3:10-3:10 rule.enter _
3:10-3:10 rule.match _
3:10-4:1 rule.match EOS
3:5-4:1 rule.match VariableStatement
3:5-4:1 rule.match GroupBodyStatement
4:1-4:1 rule.enter __
4:1-4:5 rule.match __
4:5-4:5 rule.enter RuleStatement
4:5-4:5 rule.enter GroupStatement
4:10-4:10 rule.enter _
4:10-4:11 rule.match _
4:12-4:12 rule.enter _
4:12-4:13 rule.match _
4:14-4:14 rule.enter EOS
4:14-4:14 rule.enter _
4:14-4:14 rule.match _
4:14-5:1 rule.match EOS
5:1-5:1 rule.enter __
5:1-5:7 rule.match __
5:7-5:7 rule.enter GroupBody
5:7-5:7 rule.enter RuleStatement
5:7-5:7 rule.enter GroupStatement
5:7-5:7 rule.fail GroupStatement
5:7-5:7 rule.enter CheckStatement
5:7-5:7 rule.fail CheckStatement
5:7-5:7 rule.fail RuleStatement
5:7-5:7 rule.enter GroupBodyStatement
5:7-5:7 rule.enter VariableStatement
5:10-5:10 rule.enter _
5:10-5:11 rule.match _
5:12-5:12 rule.enter EOS
5:12-5:12 rule.enter _
5:12-5:12 rule.match _
5:12-6:1 rule.match EOS
5:7-6:1 rule.match VariableStatement
5:7-6:1 rule.match GroupBodyStatement
6:1-6:1 rule.enter __
6:1-6:7 rule.match __
6:7-6:7 rule.enter RuleStatement
6:7-6:7 rule.enter GroupStatement
6:7-6:7 rule.fail GroupStatement
6:7-6:7 rule.enter CheckStatement
6:7-6:7 rule.fail CheckStatement
6:7-6:7 rule.fail RuleStatement
6:7-6:7 rule.enter GroupBodyStatement
6:7-6:7 rule.enter VariableStatement
6:7-6:7 rule.fail VariableStatement
6:7-6:7 rule.enter RuleStatement
6:7-6:7 rule.enter GroupStatement
6:7-6:7 rule.fail GroupStatement
6:7-6:7 rule.enter CheckStatement
6:7-6:7 rule.fail CheckStatement
6:7-6:7 rule.fail RuleStatement
6:7-6:7 rule.fail GroupBodyStatement
6:7-6:7 rule.enter GroupLeadingRuleStatement
6:7-6:7 rule.enter RuleStatement
6:7-6:7 rule.enter GroupStatement
6:7-6:7 rule.fail GroupStatement
6:7-6:7 rule.enter CheckStatement
6:7-6:7 rule.fail CheckStatement
6:7-6:7 rule.fail RuleStatement
6:7-6:7 rule.fail GroupLeadingRuleStatement
5:7-5:7 rule.fail GroupBody
4:5-4:5 rule.fail GroupStatement
4:5-4:5 rule.enter CheckStatement
4:5-4:5 rule.fail CheckStatement
4:5-4:5 rule.fail RuleStatement
4:5-4:5 rule.enter GroupBodyStatement
4:5-4:5 rule.enter VariableStatement
4:5-4:5 rule.fail VariableStatement
4:5-4:5 rule.enter RuleStatement
4:5-4:5 rule.enter GroupStatement
4:10-4:10 rule.enter _
4:10-4:11 rule.match _
4:12-4:12 rule.enter _
4:12-4:13 rule.match _
4:14-4:14 rule.enter EOS
4:14-4:14 rule.enter _
4:14-4:14 rule.match _
4:14-5:1 rule.match EOS
5:1-5:1 rule.enter __
5:1-5:7 rule.match __
5:7-5:7 rule.enter GroupBody
5:7-5:7 rule.enter RuleStatement
5:7-5:7 rule.enter GroupStatement
5:7-5:7 rule.fail GroupStatement
5:7-5:7 rule.enter CheckStatement
5:7-5:7 rule.fail CheckStatement
5:7-5:7 rule.fail RuleStatement
5:7-5:7 rule.enter GroupBodyStatement
5:7-5:7 rule.enter VariableStatement
5:10-5:10 rule.enter _
5:10-5:11 rule.match _
5:12-5:12 rule.enter EOS
5:12-5:12 rule.enter _
5:12-5:12 rule.match _
5:12-6:1 rule.match EOS
5:7-6:1 rule.match VariableStatement
5:7-6:1 rule.match GroupBodyStatement
6:1-6:1 rule.enter __
6:1-6:7 rule.match __
6:7-6:7 rule.enter RuleStatement
6:7-6:7 rule.enter GroupStatement
6:7-6:7 rule.fail GroupStatement
6:7-6:7 rule.enter CheckStatement
6:7-6:7 rule.fail CheckStatement
6:7-6:7 rule.fail RuleStatement
6:7-6:7 rule.enter GroupBodyStatement
6:7-6:7 rule.enter VariableStatement
6:7-6:7 rule.fail VariableStatement
6:7-6:7 rule.enter RuleStatement
6:7-6:7 rule.enter GroupStatement
6:7-6:7 rule.fail GroupStatement
6:7-6:7 rule.enter CheckStatement
6:7-6:7 rule.fail CheckStatement
6:7-6:7 rule.fail RuleStatement
6:7-6:7 rule.fail GroupBodyStatement
6:7-6:7 rule.enter GroupLeadingRuleStatement
6:7-6:7 rule.enter RuleStatement
6:7-6:7 rule.enter GroupStatement
6:7-6:7 rule.fail GroupStatement
6:7-6:7 rule.enter CheckStatement
6:7-6:7 rule.fail CheckStatement
6:7-6:7 rule.fail RuleStatement
6:7-6:7 rule.fail GroupLeadingRuleStatement
5:7-5:7 rule.fail GroupBody
4:5-4:5 rule.fail GroupStatement
4:5-4:5 rule.enter CheckStatement
4:5-4:5 rule.fail CheckStatement
4:5-4:5 rule.fail RuleStatement
4:5-4:5 rule.fail GroupBodyStatement
4:5-4:5 rule.enter GroupLeadingRuleStatement
4:5-4:5 rule.enter RuleStatement
4:5-4:5 rule.enter GroupStatement
4:10-4:10 rule.enter _
4:10-4:11 rule.match _
4:12-4:12 rule.enter _
4:12-4:13 rule.match _
4:14-4:14 rule.enter EOS
4:14-4:14 rule.enter _
4:14-4:14 rule.match _
4:14-5:1 rule.match EOS
5:1-5:1 rule.enter __
5:1-5:7 rule.match __
5:7-5:7 rule.enter GroupBody
5:7-5:7 rule.enter RuleStatement
5:7-5:7 rule.enter GroupStatement
5:7-5:7 rule.fail GroupStatement
5:7-5:7 rule.enter CheckStatement
5:7-5:7 rule.fail CheckStatement
5:7-5:7 rule.fail RuleStatement
5:7-5:7 rule.enter GroupBodyStatement
5:7-5:7 rule.enter VariableStatement
5:10-5:10 rule.enter _
5:10-5:11 rule.match _
5:12-5:12 rule.enter EOS
5:12-5:12 rule.enter _
5:12-5:12 rule.match _
5:12-6:1 rule.match EOS
5:7-6:1 rule.match VariableStatement
5:7-6:1 rule.match GroupBodyStatement
6:1-6:1 rule.enter __
6:1-6:7 rule.match __
6:7-6:7 rule.enter RuleStatement
6:7-6:7 rule.enter GroupStatement
6:7-6:7 rule.fail GroupStatement
6:7-6:7 rule.enter CheckStatement
6:7-6:7 rule.fail CheckStatement
6:7-6:7 rule.fail RuleStatement
6:7-6:7 rule.enter GroupBodyStatement
6:7-6:7 rule.enter VariableStatement
6:7-6:7 rule.fail VariableStatement
6:7-6:7 rule.enter RuleStatement
6:7-6:7 rule.enter GroupStatement
6:7-6:7 rule.fail GroupStatement
6:7-6:7 rule.enter CheckStatement
6:7-6:7 rule.fail CheckStatement
6:7-6:7 rule.fail RuleStatement
6:7-6:7 rule.fail GroupBodyStatement
6:7-6:7 rule.enter GroupLeadingRuleStatement
6:7-6:7 rule.enter RuleStatement
6:7-6:7 rule.enter GroupStatement
6:7-6:7 rule.fail GroupStatement
6:7-6:7 rule.enter CheckStatement
6:7-6:7 rule.fail CheckStatement
6:7-6:7 rule.fail RuleStatement
6:7-6:7 rule.fail GroupLeadingRuleStatement
5:7-5:7 rule.fail GroupBody
4:5-4:5 rule.fail GroupStatement
4:5-4:5 rule.enter CheckStatement
4:5-4:5 rule.fail CheckStatement
4:5-4:5 rule.fail RuleStatement
4:5-4:5 rule.fail GroupLeadingRuleStatement
3:5-3:5 rule.fail GroupBody
2:3-2:3 rule.fail GroupStatement
2:3-2:3 rule.enter CheckStatement
2:3-2:3 rule.fail CheckStatement
2:3-2:3 rule.fail RuleStatement
2:3-2:3 rule.enter GroupBodyStatement
2:3-2:3 rule.enter VariableStatement
2:3-2:3 rule.fail VariableStatement
2:3-2:3 rule.enter RuleStatement
2:3-2:3 rule.enter GroupStatement
2:8-2:8 rule.enter _
2:8-2:9 rule.match _
2:10-2:10 rule.enter _
2:10-2:11 rule.match _
2:12-2:12 rule.enter EOS
2:12-2:12 rule.enter _
2:12-2:12 rule.match _
2:12-3:1 rule.match EOS
3:1-3:1 rule.enter __
3:1-3:5 rule.match __
3:5-3:5 rule.enter GroupBody
3:5-3:5 rule.enter RuleStatement
3:5-3:5 rule.enter GroupStatement
3:5-3:5 rule.fail GroupStatement
3:5-3:5 rule.enter CheckStatement
3:5-3:5 rule.fail CheckStatement
3:5-3:5 rule.fail RuleStatement
3:5-3:5 rule.enter GroupBodyStatement
3:5-3:5 rule.enter VariableStatement
3:8-3:8 rule.enter _
3:8-3:9 rule.match _
3:10-3:10 rule.enter EOS
3:10-3:10 rule.enter _
3:10-3:10 rule.match _
3:10-4:1 rule.match EOS
3:5-4:1 rule.match VariableStatement
3:5-4:1 rule.match GroupBodyStatement
4:1-4:1 rule.enter __
4:1-4:5 rule.match __
4:5-4:5 rule.enter RuleStatement
4:5-4:5 rule.enter GroupStatement
4:10-4:10 rule.enter _
4:10-4:11 rule.match _
4:12-4:12 rule.enter _
4:12-4:13 rule.match _
4:14-4:14 rule.enter EOS
4:14-4:14 rule.enter _
4:14-4:14 rule.match _
4:14-5:1 rule.match EOS
5:1-5:1 rule.enter __
5:1-5:7 rule.match __
5:7-5:7 rule.enter GroupBody
5:7-5:7 rule.enter RuleStatement
5:7-5:7 rule.enter GroupStatement
5:7-5:7 rule.fail GroupStatement
5:7-5:7 rule.enter CheckStatement
5:7-5:7 rule.fail CheckStatement
5:7-5:7 rule.fail RuleStatement
5:7-5:7 rule.enter GroupBodyStatement
5:7-5:7 rule.enter VariableStatement
5:10-5:10 rule.enter _
5:10-5:11 rule.match _
5:12-5:12 rule.enter EOS
5:12-5:12 rule.enter _
5:12-5:12 rule.match _
5:12-6:1 rule.match EOS
5:7-6:1 rule.match VariableStatement
5:7-6:1 rule.match GroupBodyStatement
6:1-6:1 rule.enter __
6:1-6:7 rule.match __
6:7-6:7 rule.enter RuleStatement
6:7-6:7 rule.enter GroupStatement
6:7-6:7 rule.fail GroupStatement
6:7-6:7 rule.enter CheckStatement
6:7-6:7 rule.fail CheckStatement
6:7-6:7 rule.fail RuleStatement
6:7-6:7 rule.enter GroupBodyStatement
6:7-6:7 rule.enter VariableStatement
6:7-6:7 rule.fail VariableStatement
6:7-6:7 rule.enter RuleStatement
6:7-6:7 rule.enter GroupStatement
6:7-6:7 rule.fail GroupStatement
6:7-6:7 rule.enter CheckStatement
6:7-6:7 rule.fail CheckStatement
6:7-6:7 rule.fail RuleStatement
6:7-6:7 rule.fail GroupBodyStatement
6:7-6:7 rule.enter GroupLeadingRuleStatement
6:7-6:7 rule.enter RuleStatement
6:7-6:7 rule.enter GroupStatement
6:7-6:7 rule.fail GroupStatement
6:7-6:7 rule.enter CheckStatement
6:7-6:7 rule.fail CheckStatement
6:7-6:7 rule.fail RuleStatement
6:7-6:7 rule.fail GroupLeadingRuleStatement
5:7-5:7 rule.fail GroupBody
4:5-4:5 rule.fail GroupStatement
4:5-4:5 rule.enter CheckStatement
4:5-4:5 rule.fail CheckStatement
4:5-4:5 rule.fail RuleStatement
4:5-4:5 rule.enter GroupBodyStatement
4:5-4:5 rule.enter VariableStatement
4:5-4:5 rule.fail VariableStatement
4:5-4:5 rule.enter RuleStatement
4:5-4:5 rule.enter GroupStatement
4:10-4:10 rule.enter _
4:10-4:11 rule.match _
4:12-4:12 rule.enter _
4:12-4:13 rule.match _
4:14-4:14 rule.enter EOS
4:14-4:14 rule.enter _
4:14-4:14 rule.match _
4:14-5:1 rule.match EOS
5:1-5:1 rule.enter __
5:1-5:7 rule.match __
5:7-5:7 rule.enter GroupBody
5:7-5:7 rule.enter RuleStatement
5:7-5:7 rule.enter GroupStatement
5:7-5:7 rule.fail GroupStatement
5:7-5:7 rule.enter CheckStatement
5:7-5:7 rule.fail CheckStatement
5:7-5:7 rule.fail RuleStatement
5:7-5:7 rule.enter GroupBodyStatement
5:7-5:7 rule.enter VariableStatement
5:10-5:10 rule.enter _
5:10-5:11 rule.match _
5:12-5:12 rule.enter EOS
5:12-5:12 rule.enter _
5:12-5:12 rule.match _
5:12-6:1 rule.match EOS
5:7-6:1 rule.match VariableStatement
5:7-6:1 rule.match GroupBodyStatement
6:1-6:1 rule.enter __
6:1-6:7 rule.match __
6:7-6:7 rule.enter RuleStatement
6:7-6:7 rule.enter GroupStatement
6:7-6:7 rule.fail GroupStatement
6:7-6:7 rule.enter CheckStatement
6:7-6:7 rule.fail CheckStatement
6:7-6:7 rule.fail RuleStatement
6:7-6:7 rule.enter GroupBodyStatement
6:7-6:7 rule.enter VariableStatement
6:7-6:7 rule.fail VariableStatement
6:7-6:7 rule.enter RuleStatement
6:7-6:7 rule.enter GroupStatement
6:7-6:7 rule.fail GroupStatement
6:7-6:7 rule.enter CheckStatement
6:7-6:7 rule.fail CheckStatement
6:7-6:7 rule.fail RuleStatement
6:7-6:7 rule.fail GroupBodyStatement
6:7-6:7 rule.enter GroupLeadingRuleStatement
6:7-6:7 rule.enter RuleStatement
6:7-6:7 rule.enter GroupStatement
6:7-6:7 rule.fail GroupStatement
6:7-6:7 rule.enter CheckStatement
6:7-6:7 rule.fail CheckStatement
6:7-6:7 rule.fail RuleStatement
6:7-6:7 rule.fail GroupLeadingRuleStatement
5:7-5:7 rule.fail GroupBody
4:5-4:5 rule.fail GroupStatement
4:5-4:5 rule.enter CheckStatement
4:5-4:5 rule.fail CheckStatement
4:5-4:5 rule.fail RuleStatement
4:5-4:5 rule.fail GroupBodyStatement
4:5-4:5 rule.enter GroupLeadingRuleStatement
4:5-4:5 rule.enter RuleStatement
4:5-4:5 rule.enter GroupStatement
4:10-4:10 rule.enter _
4:10-4:11 rule.match _
4:12-4:12 rule.enter _
4:12-4:13 rule.match _
4:14-4:14 rule.enter EOS
4:14-4:14 rule.enter _
4:14-4:14 rule.match _
4:14-5:1 rule.match EOS
5:1-5:1 rule.enter __
5:1-5:7 rule.match __
5:7-5:7 rule.enter GroupBody
5:7-5:7 rule.enter RuleStatement
5:7-5:7 rule.enter GroupStatement
5:7-5:7 rule.fail GroupStatement
5:7-5:7 rule.enter CheckStatement
5:7-5:7 rule.fail CheckStatement
5:7-5:7 rule.fail RuleStatement
5:7-5:7 rule.enter GroupBodyStatement
5:7-5:7 rule.enter VariableStatement
5:10-5:10 rule.enter _
5:10-5:11 rule.match _
5:12-5:12 rule.enter EOS
5:12-5:12 rule.enter _
5:12-5:12 rule.match _
5:12-6:1 rule.match EOS
5:7-6:1 rule.match VariableStatement
5:7-6:1 rule.match GroupBodyStatement
6:1-6:1 rule.enter __
6:1-6:7 rule.match __
6:7-6:7 rule.enter RuleStatement
6:7-6:7 rule.enter GroupStatement
6:7-6:7 rule.fail GroupStatement
6:7-6:7 rule.enter CheckStatement
6:7-6:7 rule.fail CheckStatement
6:7-6:7 rule.fail RuleStatement
6:7-6:7 rule.enter GroupBodyStatement
6:7-6:7 rule.enter VariableStatement
6:7-6:7 rule.fail VariableStatement
6:7-6:7 rule.enter RuleStatement
6:7-6:7 rule.enter GroupStatement
6:7-6:7 rule.fail GroupStatement
6:7-6:7 rule.enter CheckStatement
6:7-6:7 rule.fail CheckStatement
6:7-6:7 rule.fail RuleStatement
6:7-6:7 rule.fail GroupBodyStatement
6:7-6:7 rule.enter GroupLeadingRuleStatement
6:7-6:7 rule.enter RuleStatement
6:7-6:7 rule.enter GroupStatement
6:7-6:7 rule.fail GroupStatement
6:7-6:7 rule.enter CheckStatement
6:7-6:7 rule.fail CheckStatement
6:7-6:7 rule.fail RuleStatement
6:7-6:7 rule.fail GroupLeadingRuleStatement
5:7-5:7 rule.fail GroupBody
4:5-4:5 rule.fail GroupStatement
4:5-4:5 rule.enter CheckStatement
4:5-4:5 rule.fail CheckStatement
4:5-4:5 rule.fail RuleStatement
4:5-4:5 rule.fail GroupLeadingRuleStatement
3:5-3:5 rule.fail GroupBody
2:3-2:3 rule.fail GroupStatement
2:3-2:3 rule.enter CheckStatement
2:3-2:3 rule.fail CheckStatement
2:3-2:3 rule.fail RuleStatement
2:3-2:3 rule.fail GroupBodyStatement
2:3-2:3 rule.enter GroupLeadingRuleStatement
2:3-2:3 rule.enter RuleStatement
2:3-2:3 rule.enter GroupStatement
2:8-2:8 rule.enter _
2:8-2:9 rule.match _
2:10-2:10 rule.enter _
2:10-2:11 rule.match _
2:12-2:12 rule.enter EOS
2:12-2:12 rule.enter _
2:12-2:12 rule.match _
2:12-3:1 rule.match EOS
3:1-3:1 rule.enter __
3:1-3:5 rule.match __
3:5-3:5 rule.enter GroupBody
3:5-3:5 rule.enter RuleStatement
3:5-3:5 rule.enter GroupStatement
3:5-3:5 rule.fail GroupStatement
3:5-3:5 rule.enter CheckStatement
3:5-3:5 rule.fail CheckStatement
3:5-3:5 rule.fail RuleStatement
3:5-3:5 rule.enter GroupBodyStatement
3:5-3:5 rule.enter VariableStatement
3:8-3:8 rule.enter _
3:8-3:9 rule.match _
3:10-3:10 rule.enter EOS
3:10-3:10 rule.enter _
3:10-3:10 rule.match _
3:10-4:1 rule.match EOS
3:5-4:1 rule.match VariableStatement
3:5-4:1 rule.match GroupBodyStatement
4:1-4:1 rule.enter __
4:1-4:5 rule.match __
4:5-4:5 rule.enter RuleStatement
4:5-4:5 rule.enter GroupStatement
4:10-4:10 rule.enter _
4:10-4:11 rule.match _
4:12-4:12 rule.enter _
4:12-4:13 rule.match _
4:14-4:14 rule.enter EOS
4:14-4:14 rule.enter _
4:14-4:14 rule.match _
4:14-5:1 rule.match EOS
5:1-5:1 rule.enter __
5:1-5:7 rule.match __
5:7-5:7 rule.enter GroupBody
5:7-5:7 rule.enter RuleStatement
5:7-5:7 rule.enter GroupStatement
5:7-5:7 rule.fail GroupStatement
5:7-5:7 rule.enter CheckStatement
5:7-5:7 rule.fail CheckStatement
5:7-5:7 rule.fail RuleStatement
5:7-5:7 rule.enter GroupBodyStatement
5:7-5:7 rule.enter VariableStatement
5:10-5:10 rule.enter _
5:10-5:11 rule.match _
5:12-5:12 rule.enter EOS
5:12-5:12 rule.enter _
5:12-5:12 rule.match _
5:12-6:1 rule.match EOS
5:7-6:1 rule.match VariableStatement
5:7-6:1 rule.match GroupBodyStatement
6:1-6:1 rule.enter __
6:1-6:7 rule.match __
6:7-6:7 rule.enter RuleStatement
6:7-6:7 rule.enter GroupStatement
6:7-6:7 rule.fail GroupStatement
6:7-6:7 rule.enter CheckStatement
6:7-6:7 rule.fail CheckStatement
6:7-6:7 rule.fail RuleStatement
6:7-6:7 rule.enter GroupBodyStatement
6:7-6:7 rule.enter VariableStatement
6:7-6:7 rule.fail VariableStatement
6:7-6:7 rule.enter RuleStatement
6:7-6:7 rule.enter GroupStatement
6:7-6:7 rule.fail GroupStatement
6:7-6:7 rule.enter CheckStatement
6:7-6:7 rule.fail CheckStatement
6:7-6:7 rule.fail RuleStatement
6:7-6:7 rule.fail GroupBodyStatement
6:7-6:7 rule.enter GroupLeadingRuleStatement
6:7-6:7 rule.enter RuleStatement
6:7-6:7 rule.enter GroupStatement
6:7-6:7 rule.fail GroupStatement
6:7-6:7 rule.enter CheckStatement
6:7-6:7 rule.fail CheckStatement
6:7-6:7 rule.fail RuleStatement
6:7-6:7 rule.fail GroupLeadingRuleStatement
5:7-5:7 rule.fail GroupBody
4:5-4:5 rule.fail GroupStatement
4:5-4:5 rule.enter CheckStatement
4:5-4:5 rule.fail CheckStatement
4:5-4:5 rule.fail RuleStatement
4:5-4:5 rule.enter GroupBodyStatement
4:5-4:5 rule.enter VariableStatement
4:5-4:5 rule.fail VariableStatement
4:5-4:5 rule.enter RuleStatement
4:5-4:5 rule.enter GroupStatement
4:10-4:10 rule.enter _
4:10-4:11 rule.match _
4:12-4:12 rule.enter _
4:12-4:13 rule.match _
4:14-4:14 rule.enter EOS
4:14-4:14 rule.enter _
4:14-4:14 rule.match _
4:14-5:1 rule.match EOS
5:1-5:1 rule.enter __
5:1-5:7 rule.match __
5:7-5:7 rule.enter GroupBody
5:7-5:7 rule.enter RuleStatement
5:7-5:7 rule.enter GroupStatement
5:7-5:7 rule.fail GroupStatement
5:7-5:7 rule.enter CheckStatement
5:7-5:7 rule.fail CheckStatement
5:7-5:7 rule.fail RuleStatement
5:7-5:7 rule.enter GroupBodyStatement
5:7-5:7 rule.enter VariableStatement
5:10-5:10 rule.enter _
5:10-5:11 rule.match _
5:12-5:12 rule.enter EOS
5:12-5:12 rule.enter _
5:12-5:12 rule.match _
5:12-6:1 rule.match EOS
5:7-6:1 rule.match VariableStatement
5:7-6:1 rule.match GroupBodyStatement
6:1-6:1 rule.enter __
6:1-6:7 rule.match __
6:7-6:7 rule.enter RuleStatement
6:7-6:7 rule.enter GroupStatement
6:7-6:7 rule.fail GroupStatement
6:7-6:7 rule.enter CheckStatement
6:7-6:7 rule.fail CheckStatement
6:7-6:7 rule.fail RuleStatement
6:7-6:7 rule.enter GroupBodyStatement
6:7-6:7 rule.enter VariableStatement
6:7-6:7 rule.fail VariableStatement
6:7-6:7 rule.enter RuleStatement
6:7-6:7 rule.enter GroupStatement
6:7-6:7 rule.fail GroupStatement
6:7-6:7 rule.enter CheckStatement
6:7-6:7 rule.fail CheckStatement
6:7-6:7 rule.fail RuleStatement
6:7-6:7 rule.fail GroupBodyStatement
6:7-6:7 rule.enter GroupLeadingRuleStatement
6:7-6:7 rule.enter RuleStatement
6:7-6:7 rule.enter GroupStatement
6:7-6:7 rule.fail GroupStatement
6:7-6:7 rule.enter CheckStatement
6:7-6:7 rule.fail CheckStatement
6:7-6:7 rule.fail RuleStatement
6:7-6:7 rule.fail GroupLeadingRuleStatement
5:7-5:7 rule.fail GroupBody
4:5-4:5 rule.fail GroupStatement
4:5-4:5 rule.enter CheckStatement
4:5-4:5 rule.fail CheckStatement
4:5-4:5 rule.fail RuleStatement
4:5-4:5 rule.fail GroupBodyStatement
4:5-4:5 rule.enter GroupLeadingRuleStatement
4:5-4:5 rule.enter RuleStatement
4:5-4:5 rule.enter GroupStatement
4:10-4:10 rule.enter _
4:10-4:11 rule.match _
4:12-4:12 rule.enter _
4:12-4:13 rule.match _
4:14-4:14 rule.enter EOS
4:14-4:14 rule.enter _
4:14-4:14 rule.match _
4:14-5:1 rule.match EOS
5:1-5:1 rule.enter __
5:1-5:7 rule.match __
5:7-5:7 rule.enter GroupBody
5:7-5:7 rule.enter RuleStatement
5:7-5:7 rule.enter GroupStatement
5:7-5:7 rule.fail GroupStatement
5:7-5:7 rule.enter CheckStatement
5:7-5:7 rule.fail CheckStatement
5:7-5:7 rule.fail RuleStatement
5:7-5:7 rule.enter GroupBodyStatement
5:7-5:7 rule.enter VariableStatement
5:10-5:10 rule.enter _
5:10-5:11 rule.match _
5:12-5:12 rule.enter EOS
5:12-5:12 rule.enter _
5:12-5:12 rule.match _
5:12-6:1 rule.match EOS
5:7-6:1 rule.match VariableStatement
5:7-6:1 rule.match GroupBodyStatement
6:1-6:1 rule.enter __
6:1-6:7 rule.match __
6:7-6:7 rule.enter RuleStatement
6:7-6:7 rule.enter GroupStatement
6:7-6:7 rule.fail GroupStatement
6:7-6:7 rule.enter CheckStatement
6:7-6:7 rule.fail CheckStatement
6:7-6:7 rule.fail RuleStatement
6:7-6:7 rule.enter GroupBodyStatement
6:7-6:7 rule.enter VariableStatement
6:7-6:7 rule.fail VariableStatement
6:7-6:7 rule.enter RuleStatement
6:7-6:7 rule.enter GroupStatement
6:7-6:7 rule.fail GroupStatement
6:7-6:7 rule.enter CheckStatement
6:7-6:7 rule.fail CheckStatement
6:7-6:7 rule.fail RuleStatement
6:7-6:7 rule.fail GroupBodyStatement
6:7-6:7 rule.enter GroupLeadingRuleStatement
6:7-6:7 rule.enter RuleStatement
6:7-6:7 rule.enter GroupStatement
6:7-6:7 rule.fail GroupStatement
6:7-6:7 rule.enter CheckStatement
6:7-6:7 rule.fail CheckStatement
6:7-6:7 rule.fail RuleStatement
6:7-6:7 rule.fail GroupLeadingRuleStatement
5:7-5:7 rule.fail GroupBody
4:5-4:5 rule.fail GroupStatement
4:5-4:5 rule.enter CheckStatement
4:5-4:5 rule.fail CheckStatement
4:5-4:5 rule.fail RuleStatement
4:5-4:5 rule.fail GroupLeadingRuleStatement
3:5-3:5 rule.fail GroupBody
2:3-2:3 rule.fail GroupStatement
2:3-2:3 rule.enter CheckStatement
2:3-2:3 rule.fail CheckStatement
2:3-2:3 rule.fail RuleStatement
2:3-2:3 rule.fail GroupLeadingRuleStatement
2:3-2:3 rule.fail GroupBody
1:1-1:1 rule.fail GroupStatement
1:1-1:1 rule.enter CheckStatement
1:1-1:1 rule.fail CheckStatement
1:1-1:1 rule.fail RuleStatement
1:1-1:1 rule.fail SourceElements
1:1-1:1 rule.match Program
David Majda
Aug 28, 2016, 2:45:39 PM8/28/16
to Ali Tavakoli, PEG.js: Parser Generator for JavaScript
Hi Ali,
This looks like a bug. I simplified the test case you provided and filed an issue.
Thank for the question/report!
David
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David Majda
http://majda.cz/
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