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15 lines
598 B
15 lines
598 B
5 years ago
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# 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).as(:prefix) }
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rule(:phrase) { (quote >> (term >> space.maybe).repeat >> quote).as(:phrase) }
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rule(:clause) { (prefix.maybe >> operator.maybe >> (phrase | term)).as(:clause) }
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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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