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import Foundation
struct OpportunityParserStrategy: MapParserStrategy {
private let regex = MapParsingPatterns.opportunity
func canHandle(line: String) -> Bool {
let range = NSRange(location: 0, length: line.utf16.count)
let matches = regex.matches(in: String(line), options: [], range: range)
return matches.count > 0 && matches[0].numberOfRanges == 5
}
func handle(index: Int, line: String, vertices: [String: Vertex]) -> (Any.Type, Any) {
let range = NSRange(location: 0, length: line.utf16.count)
let matches = regex.matches(in: String(line), options: [], range: range)
let match = matches[0]
let multiplier = CGFloat(
String(line[Range(match.range(at: 3), in: line)!]) == "-" ? -1.0 : 1.0)
let vertex = String(line[Range(match.range(at: 2), in: line)!])
let opportunityString = String(line[Range(match.range(at: 4), in: line)!])
let opportunity = CGFloat(
truncating: NumberFormatter().number(from: opportunityString) ?? 0.0)
if let origin = vertices[vertex] {
let destination = CGPoint(
x: origin.position.x + opportunity * multiplier, y: origin.position.y)
let opportunity = Opportunity(id: index, origin: origin.position, destination: destination)
return (Opportunity.self, opportunity)
}
return (NSObject.self, NSObject()) // No matching object
}
}
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