15 linhas
756 B
Ruby
15 linhas
756 B
Ruby
# frozen_string_literal: true
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class SearchQueryParser < Parslet::Parser
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rule(:term) { match('[^\s":]').repeat(1).as(:term) }
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rule(:quote) { str('"') }
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rule(:colon) { str(':') }
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rule(:space) { match('\s').repeat(1) }
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rule(:operator) { (str('+') | str('-')).as(:operator) }
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rule(:prefix) { term >> colon }
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rule(:shortcode) { (colon >> term >> colon.maybe).as(:shortcode) }
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rule(:phrase) { (quote >> (match('[^\s"]').repeat(1).as(:term) >> space.maybe).repeat >> quote).as(:phrase) }
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rule(:clause) { (operator.maybe >> prefix.maybe.as(:prefix) >> (phrase | term | shortcode)).as(:clause) | prefix.as(:clause) | quote.as(:junk) }
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rule(:query) { (clause >> space.maybe).repeat.as(:query) }
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root(:query)
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end
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