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import Foundation
struct VertexParserStrategy: MapParserStrategy {
private let regex = MapParsingPatterns.vertex
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 >= 4
}
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 key = String(line[Range(match.range(at: 1), in: line)!])
let xString = String(line[Range(match.range(at: 2), in: line)!])
let yString = String(line[Range(match.range(at: 3), in: line)!])
let x = CGFloat(truncating: NumberFormatter().number(from: xString) ?? 0.0)
let y = CGFloat(truncating: NumberFormatter().number(from: yString) ?? 0.0)
var vertex = Vertex(
id: index,
label: key,
position: CGPoint(x: x, y: y)
)
if let range = Range(match.range(at: 4), in: line) {
let shapeString = String(line[range])
vertex.shape = VertexShape(rawValue: shapeString.lowercased()) ?? .circle
}
return (Vertex.self, vertex)
}
}
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