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//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2021-2022 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
//
//===----------------------------------------------------------------------===//
var checkComments = true
extension Engine {
func makeProcessor(
input: String, bounds: Range<String.Index>, matchMode: MatchMode
) -> Processor {
Processor(
program: program,
input: input,
subjectBounds: bounds,
searchBounds: bounds,
matchMode: matchMode,
isTracingEnabled: enableTracing,
shouldMeasureMetrics: enableMetrics)
}
func makeFirstMatchProcessor(
input: String,
subjectBounds: Range<String.Index>,
searchBounds: Range<String.Index>
) -> Processor {
Processor(
program: program,
input: input,
subjectBounds: subjectBounds,
searchBounds: searchBounds,
matchMode: .partialFromFront,
isTracingEnabled: enableTracing,
shouldMeasureMetrics: enableMetrics)
}
}
extension Processor {
// TODO: Should we throw here?
mutating func consume() -> Input.Index? {
while true {
switch self.state {
case .accept:
return self.currentPosition
case .fail:
return nil
case .inProgress: self.cycle()
}
}
}
}
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