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Parser speedup 1 #73

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079a32c
Prevent backtracking inside of TOP.
timo Feb 26, 2025
8fa7137
Make comment and pi stop at their stopper immediately.
timo Feb 26, 2025
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8 changes: 4 additions & 4 deletions lib/XML/Grammar.rakumod
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Original file line number Diff line number Diff line change
Expand Up @@ -2,14 +2,14 @@ unit grammar XML::Grammar;

rule TOP {
^
<xmldecl>? [ <comment> | <pi> ]*
<doctypedecl>? [ <comment> | <pi> ]*
[<xmldecl> [ <comment> | <pi> ]* ]?
[<doctypedecl> [ <comment> | <pi> ]* ]?
<root=element> [ <comment> | <pi> ]*
$
}

regex comment { '<!--' $<content>=[.*?] '-->' }
regex pi { '<?' $<content>=[.*?] '?>' }
regex comment { '<!--' ~ '-->' $<content>=[[<!before '-->'> . ]*?] }
regex pi { '<?' ~ '?>' $<content>=[[<!before '?>'> . ]*?] }

rule xmldecl {
'<?xml'
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