grammar TagQueryGrammar
rule query tag space boolean space (query / group) / tag end rule tag !(quote / group / boolean / space / group_start / group_end) [\w-]+ <Tag> end rule quote '"' / "'" end rule group group_start query group_end <QueryGroup> end rule boolean AND / OR end rule space [\s]+ <Whitespace> end rule group_start '(' <GroupStart> end rule group_end ')' <GroupEnd> end rule AND 'AND' <AndLiteral> end rule OR 'OR' <OrLiteral> end
end