84 lines
3.0 KiB
Swift
84 lines
3.0 KiB
Swift
import Foundation
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internal import DLCDecoder
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extension RowDecoder {
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class DateDecoder: DLCDecoder.DateDecoder {
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typealias ValueDecoder = DLCDecoder.ValueDecoder
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typealias RowDecoder = DLCDecoder.RowDecoder
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let strategy: DateDecodingStrategy
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init(strategy: DateDecodingStrategy) {
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self.strategy = strategy
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}
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func decode(
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from decoder: any ValueDecoder
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) throws -> Date {
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try decode(from: decoder) { decoder in
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try decoder.decode(Date.self)
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} _: { decoder in
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try decoder.decode(String.self)
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} _: { decoder in
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try decoder.decode(Int64.self)
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} _: { decoder in
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try decoder.decode(Double.self)
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}
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}
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func decode(
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from decoder: any RowDecoder,
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for key: any CodingKey
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) throws -> Date {
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try decode(from: decoder) { decoder in
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try decoder.decode(Date.self, for: key)
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} _: { decoder in
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try decoder.decode(String.self, for: key)
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} _: { decoder in
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try decoder.decode(Int64.self, for: key)
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} _: { decoder in
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try decoder.decode(Double.self, for: key)
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}
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}
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private func decode<D: Decoder>(
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from decoder: D,
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_ date: (D) throws -> Date,
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_ string: (D) throws -> String,
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_ int: (D) throws -> Int64,
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_ double: (D) throws -> Double
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) throws -> Date {
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switch strategy {
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case .deferredToDate:
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return try date(decoder)
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case .formatted(let dateFormatter):
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guard
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let date = dateFormatter.date(
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from: try string(decoder)
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)
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else {
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let info = "Date string does not match format expected by formatter."
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let context = DecodingError.Context(
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codingPath: decoder.codingPath,
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debugDescription: info
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)
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throw DecodingError.dataCorrupted(context)
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}
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return date
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case .millisecondsSince1970Int:
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let milliseconds = Double(try int(decoder))
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return Date(timeIntervalSince1970: milliseconds / 1000)
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case .millisecondsSince1970Double:
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let milliseconds = try double(decoder)
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return Date(timeIntervalSince1970: milliseconds / 1000)
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case .secondsSince1970Int:
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let seconds = Double(try int(decoder))
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return Date(timeIntervalSince1970: seconds)
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case .secondsSince1970Double:
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let seconds = try double(decoder)
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return Date(timeIntervalSince1970: seconds)
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}
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}
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}
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}
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