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Add search syntax for operators and phrases (#11411)

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Eugen Rochko 2019-07-27 04:42:08 +02:00 • committed by GitHub
parent 501148ab91
commit b9fbcbfe4e
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6 changed files with 112 additions and 6 deletions
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app/lib/search_query_parser.rb Normal file
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# frozen_string_literal: true
class SearchQueryParser < Parslet::Parser
rule(:term) { match('[^\s":]').repeat(1).as(:term) }
rule(:quote) { str('"') }
rule(:colon) { str(':') }
rule(:space) { match('\s').repeat(1) }
rule(:operator) { (str('+') | str('-')).as(:operator) }
rule(:prefix) { (term >> colon).as(:prefix) }
rule(:phrase) { (quote >> (term >> space.maybe).repeat >> quote).as(:phrase) }
rule(:clause) { (prefix.maybe >> operator.maybe >> (phrase | term)).as(:clause) }
rule(:query) { (clause >> space.maybe).repeat.as(:query) }
root(:query)
end