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Add Firebase encoder

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This commit is contained in:
Oleksii Dykan
2017-12-27 15:26:41 +01:00
parent 0195c92b82
commit bd11b2b5bf
3 changed files with 77 additions and 41 deletions
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4
CodableFirebase.xcodeproj/project.pbxproj
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@@ -15,6 +15,7 @@
CEFDBF821FF3B35B00745EBE /* Encoder.swift in Sources */ = {isa = PBXBuildFile; fileRef = CEFDBF811FF3B35B00745EBE /* Encoder.swift */; };
CEFDBF861FF3B56200745EBE /* Decoder.swift in Sources */ = {isa = PBXBuildFile; fileRef = CEFDBF851FF3B56200745EBE /* Decoder.swift */; };
CEFDBF8A1FF3E24200745EBE /* FirebaseDecoder.swift in Sources */ = {isa = PBXBuildFile; fileRef = CEFDBF891FF3E24200745EBE /* FirebaseDecoder.swift */; };
CEFDBF8C1FF3E3CB00745EBE /* FirebaseEncoder.swift in Sources */ = {isa = PBXBuildFile; fileRef = CEFDBF8B1FF3E3CB00745EBE /* FirebaseEncoder.swift */; };
/* End PBXBuildFile section */
/* Begin PBXContainerItemProxy section */
@@ -39,6 +40,7 @@
CEFDBF811FF3B35B00745EBE /* Encoder.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Encoder.swift; sourceTree = "<group>"; };
CEFDBF851FF3B56200745EBE /* Decoder.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Decoder.swift; sourceTree = "<group>"; };
CEFDBF891FF3E24200745EBE /* FirebaseDecoder.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = FirebaseDecoder.swift; sourceTree = "<group>"; };
CEFDBF8B1FF3E3CB00745EBE /* FirebaseEncoder.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = FirebaseEncoder.swift; sourceTree = "<group>"; };
/* End PBXFileReference section */
/* Begin PBXFrameworksBuildPhase section */
@@ -85,6 +87,7 @@
CE7DD3821F9D04AE000225C5 /* FirestoreDecoder.swift */,
CE7DD3811F9D04AE000225C5 /* FirestoreEncoder.swift */,
CEFDBF891FF3E24200745EBE /* FirebaseDecoder.swift */,
CEFDBF8B1FF3E3CB00745EBE /* FirebaseEncoder.swift */,
CEFDBF851FF3B56200745EBE /* Decoder.swift */,
CEFDBF811FF3B35B00745EBE /* Encoder.swift */,
CE7DD36B1F9CFA81000225C5 /* Info.plist */,
@@ -213,6 +216,7 @@
buildActionMask = 2147483647;
files = (
CE7DD3831F9D04AE000225C5 /* FirestoreEncoder.swift in Sources */,
CEFDBF8C1FF3E3CB00745EBE /* FirebaseEncoder.swift in Sources */,
CEFDBF821FF3B35B00745EBE /* Encoder.swift in Sources */,
CEFDBF861FF3B56200745EBE /* Decoder.swift in Sources */,
CE7DD3841F9D04AE000225C5 /* FirestoreDecoder.swift in Sources */,

43
CodableFirebase/Encoder.swift
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@@ -9,49 +9,10 @@
import Foundation
class _FirebaseEncoder : Encoder {
/// The strategy to use for encoding `Date` values.
public enum DateEncodingStrategy {
/// Defer to `Date` for choosing an encoding. This is the default strategy.
case deferredToDate
/// Encode the `Date` as a UNIX timestamp (as a JSON number).
case secondsSince1970
/// Encode the `Date` as UNIX millisecond timestamp (as a JSON number).
case millisecondsSince1970
/// Encode the `Date` as an ISO-8601-formatted string (in RFC 3339 format).
@available(OSX 10.12, iOS 10.0, watchOS 3.0, tvOS 10.0, *)
case iso8601
/// Encode the `Date` as a string formatted by the given formatter.
case formatted(DateFormatter)
/// Encode the `Date` as a custom value encoded by the given closure.
///
/// If the closure fails to encode a value into the given encoder, the encoder will encode an empty automatic container in its place.
case custom((Date, Encoder) throws -> Void)
}
/// The strategy to use for encoding `Data` values.
public enum DataEncodingStrategy {
/// Defer to `Data` for choosing an encoding.
case deferredToData
/// Encoded the `Data` as a Base64-encoded string. This is the default strategy.
case base64
/// Encode the `Data` as a custom value encoded by the given closure.
///
/// If the closure fails to encode a value into the given encoder, the encoder will encode an empty automatic container in its place.
case custom((Data, Encoder) throws -> Void)
}
/// Options set on the top-level encoder to pass down the encoding hierarchy.
struct _Options {
let dateEncodingStrategy: DateEncodingStrategy?
let dataEncodingStrategy: DataEncodingStrategy?
let dateEncodingStrategy: FirebaseEncoder.DateEncodingStrategy?
let dataEncodingStrategy: FirebaseEncoder.DataEncodingStrategy?
let userInfo: [CodingUserInfoKey : Any]
}

71
CodableFirebase/FirebaseEncoder.swift Normal file
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@@ -0,0 +1,71 @@
//
// FirebaseEncoder.swift
// CodableFirebase
//
// Created by Oleksii on 27/12/2017.
// Copyright © 2017 ViolentOctopus. All rights reserved.
//
import Foundation
open class FirebaseEncoder {
/// The strategy to use for encoding `Date` values.
public enum DateEncodingStrategy {
/// Defer to `Date` for choosing an encoding. This is the default strategy.
case deferredToDate
/// Encode the `Date` as a UNIX timestamp (as a JSON number).
case secondsSince1970
/// Encode the `Date` as UNIX millisecond timestamp (as a JSON number).
case millisecondsSince1970
/// Encode the `Date` as an ISO-8601-formatted string (in RFC 3339 format).
@available(OSX 10.12, iOS 10.0, watchOS 3.0, tvOS 10.0, *)
case iso8601
/// Encode the `Date` as a string formatted by the given formatter.
case formatted(DateFormatter)
/// Encode the `Date` as a custom value encoded by the given closure.
///
/// If the closure fails to encode a value into the given encoder, the encoder will encode an empty automatic container in its place.
case custom((Date, Encoder) throws -> Void)
}
/// The strategy to use for encoding `Data` values.
public enum DataEncodingStrategy {
/// Defer to `Data` for choosing an encoding.
case deferredToData
/// Encoded the `Data` as a Base64-encoded string. This is the default strategy.
case base64
/// Encode the `Data` as a custom value encoded by the given closure.
///
/// If the closure fails to encode a value into the given encoder, the encoder will encode an empty automatic container in its place.
case custom((Data, Encoder) throws -> Void)
}
public init() {}
open var userInfo: [CodingUserInfoKey : Any] = [:]
open var dateEncodingStrategy: DateEncodingStrategy = .deferredToDate
open var dataEncodingStrategy: DataEncodingStrategy = .deferredToData
open func encode<Value : Encodable>(_ value: Value) throws -> Any {
let options = _FirebaseEncoder._Options(
dateEncodingStrategy: dateEncodingStrategy,
dataEncodingStrategy: dataEncodingStrategy,
userInfo: userInfo
)
let encoder = _FirebaseEncoder(options: options)
guard let topLevel = try encoder.box_(value) else {
throw EncodingError.invalidValue(value,
EncodingError.Context(codingPath: [],
debugDescription: "Top-level \(Value.self) did not encode any values."))
}
return topLevel
}
}