Merge branch 'develop' into experimental/EIP-1559-combined

* develop:
  Fix typo in WebsocketTests comments.
  Fixing Remote tests
  WebSocket tests are unstable on Carthage. Commented out them yet.
  Rename GanacheTests to RemoteTests
  Comment out failing WS remote test.
  Remote tests test plan toggled on
  Disable some remote test temporary.
  Fix Carthage building.
  Rename Remote tests
  Rename chainVersion to MainChainVersion to make it more explicit.
  Move back to Infura provider in remote tests
  Update CONTRIBUTION.md
  Refactoring
  Update CONTRIBUTION.md
  Update CONTRIBUTION.md
  Add CONTRIBUTION.md

# Conflicts:
#	web3swift.xcodeproj/project.pbxproj

Author: mloit

.github/workflows/ci.yml

@@ -42,8 +42,8 @@ jobs:
         run: sleep 1
       - name: Run local tests
         run: swift test --skip-build -c debug --filter localTests
-      # - name: Run remote tests
-      #   run: swift test --skip-build -c debug --filter remoteTests
+      - name: Run remote tests
+        run: swift test --skip-build -c debug --filter remoteTests
   carthage:
     name: Carthage
     runs-on: macOS-11
@@ -64,7 +64,7 @@ jobs:
       - name: Building dependencies
         run: carthage build --no-use-binaries --platform iOS Simulator --use-xcframeworks
       - name: Building framework
-        run: xcodebuild build-for-testing -project "web3swift.xcodeproj" -scheme "web3swift" -destination "${{matrix.destination}}" -testPlan LocalTests
+        run: xcodebuild build-for-testing -project "web3swift.xcodeproj" -scheme "web3swift" -destination "${{matrix.destination}}"
       - name: Install ganache
         run: npm install ganache --global
       - name: Start ganache in background
@@ -73,5 +73,5 @@ jobs:
         run: sleep 1
       - name: Run local tests
         run: xcodebuild test-without-building -project "web3swift.xcodeproj" -scheme "web3swift" -destination "${{matrix.destination}}" -testPlan LocalTests
-      # - name: Run remote tests
-      #   run: xcodebuild test-without-building -project "web3swift.xcodeproj" -scheme "web3swift" -destination "${{matrix.destination}}" -testPlan RemoteTests
+      - name: Run remote tests
+        run: xcodebuild test-without-building -project "web3swift.xcodeproj" -scheme "web3swift" -destination "${{matrix.destination}}" -testPlan RemoteTests

CONTRIBUTION.md

@@ -0,0 +1,70 @@
+# Contribution guide
+## Version convention
+We’re conforming [default versions convention](https://semver.org/).
+So in the `1.0.0` version each position means follow:
+- 1.\*.* — **major release**, includes API groundbreaking changes (ie: your old code will not work).
+- \*.1.* — **minor release**, we’ve added some new feature to the lib, but we didn’t break something in anyway (ie: everything will work as expected without any moves after update).
+- \*.*.1 — **patch release**, we’re haven’t add any breaking changes or even new features for the user, but we’ve fixed some bugs or rewrote something internal (ie: you should not event mention that anything were changed in the lib).
+
+This library yet living within **three weeks minor release** schedule. Also please keep in mind that in sake of avoiding complex merge conflicts, we’re currently taking only **one big feature** in release, so if you want to take some, please drop us a message somewhere to avoiding reworking it after it’ll be broken by some massive merge.
+
+Critical bug fixes are should be marked with appropriate label in PR and should be proceed **within one week** till patch ’ll be released (at least we’ll try our best to made that).
+
+## What task to choose
+Please take it from the [roadmap](https://hackmd.io/G5znP3xAQY-BVc1X8Y1jSg) or from the [opened issues](https://github.com/skywinder/web3swift/issues?q=is:issue+is:open+sort:updated-desc "").
+
+> If you want to make something completely new and purely magical, please drop us a message somewhere before, since it could ends up that this is what we planning to do a lot later or that we not planning at all.
+
+## Codestyle guideline
+- `swiftlint` check should goes with no warnings.
+- Here’s some more detailed and human readable code style [guidelines](https://hackmd.io/8bACoAnTSsKc55Os596yCg "") (you can add there some suggestion if you’d like to). 
+- We use [swift](https://www.swift.org/documentation/api-design-guidelines/ "") name convention.
+## Tests guideline
+1. Cover each new public method with tests.
+2. If you’re implementing some big feature encapsulate it in Separate file.
+3. Choose one of the two directory to add test case:
+	* `localTests` — tests which could be ran without needing to connecting to real Ethereum network.
+	* `remoteTests` — tests which needing connection to real Ethereum network to be ran.
+4. Exclude added file from opposite `*.xctestplan` file (e.g. if you’re adding file to `localTests` please exclude it from `RemoteTests.xctestplan`.
+5. Add test file to `web3swift.xcodeproj` to make it working within Carthage building system.
+
+## Hacks & tricks & magic
+### TestPlans
+In ci/cd we’re using Xcode test plans feature to spread tests to local and remote one. So any time you’re adding any new test suit (file) please exclude it from `LocalTests.xctestplan` rather `RemoteTests.xctestplan` depends on what tests group it included.
+### Swift package manager
+Please add any files unused due build process to `excludeFiles` array in `Package.swift`.
+### Carthage
+Please do not forget to add & remove all new or dropped files and dependencies in carthage `.xcodeproj` file if you’re working with project anywhere but carthage project.
+### Cocoapods
+Please do not forget to add & remove all dependencies within `web3swift.podspec` file.
+### GitHub actions
+You’re able to use our github actions checks in your fork without needing to make PR to this repo. To get that just add your branch name to the branch list in file on path `.github/actions/ci.yml` to let the magic happening like follow:
+
+```yml
+on:
+  push:
+    branches:
+      - master
+      - develop
+      - hotfix
+      - #YOUR_REPO_NAME#
+```
+
+> Please remove your branch from this list before making PR.
+
+## Good PR checklist
+### Code
+- [ ] All new functionality covered by unit tests.
+- [ ] Ci/cd green.
+- [ ] No redundant files are added (build cache, Xcode breakpoints settings and so on).
+
+### Info
+- [ ] Relative and concrete PR title.
+- [ ] Issue or roadmap goal attached.
+- [ ] PR description filled with detail explanation of what it is and what’s its specific.
+
+### Codestyle
+- [ ] All public method have `///` styled comments.
+- [ ] All magic or nonintuitive internal code parts are clearly explained in inline comments.
+- [ ] `swiftlint` ran have no warnings.
+- [ ] No commented out code lefts in PR.

Sources/web3swift/Convenience/Decodable+Extensions.swift

@@ -106,7 +106,7 @@ extension KeyedDecodingContainer {
     ///   to be initialized as `DecodableFromHex`.
     public func decodeHex<T: DecodableFromHex>(to type: T.Type, key: KeyedDecodingContainer<K>.Key) throws -> T {
         let string = try self.decode(String.self, forKey: key)
-        guard let number = T(from: string) else { throw Web3Error.dataError }
+        guard let number = T(fromHex: string) else { throw Web3Error.dataError }
         return number
     }
 
@@ -126,22 +126,20 @@ extension KeyedDecodingContainer {
 }
 
 public protocol DecodableFromHex: Decodable {
-    init?(from hexString: String)
+    init?(fromHex hexString: String)
 }
 
 extension Data: DecodableFromHex {
-    public init?(from hexString: String) {
+    public init?(fromHex hexString: String) {
         self.init()
         guard let tmp = Self.fromHex(hexString) else { return nil }
         self = tmp
     }
 }
 
 extension BigUInt: DecodableFromHex {
-    public init?(from hexString: String) {
-        self.init()
-        guard let tmp = BigUInt(hexString.stripHexPrefix(), radix: 16) else { return nil }
-        self = tmp
+    public init?(fromHex hexString: String) {
+        self.init(hexString.stripHexPrefix(), radix: 16)
     }
 }
 
@@ -154,14 +152,20 @@ extension UInt: DecodableFromHex {
 }
 
 extension Date: DecodableFromHex {
-    public init?(from hexString: String) {
+    public init?(fromHex hexString: String) {
         self.init()
         let stripedHexString = hexString.stripHexPrefix()
         guard let timestampInt = UInt64(stripedHexString, radix: 16) else { return nil }
         self = Date(timeIntervalSince1970: TimeInterval(timestampInt))
     }
 }
 
+extension EthereumAddress: DecodableFromHex {
+    public init?(fromHex hexString: String) {
+        self.init(hexString, ignoreChecksum: true)
+    }
+}
+
 private extension KeyedDecodingContainer {
     func decode(_ type: [String: Any].Type) throws -> [String: Any] {
         var dictionary: [String: Any] = [:]

Sources/web3swift/Web3/Web3+EIP1559.swift

@@ -44,7 +44,7 @@ public extension Web3 {
     ///   - current: Current block
     /// - Returns: True or false if block is EIP-1559 or not
     static func isEip1559Block(parent: Block, current: Block) -> Bool {
-        let parentGasLimit = parent.chainVersion >= .London ? parent.gasLimit : parent.gasLimit * Web3.ElasticityMultiplier
+        let parentGasLimit = parent.mainChainVersion >= .London ? parent.gasLimit : parent.gasLimit * Web3.ElasticityMultiplier
 
         guard verifyGasLimit(parentGasLimit: parentGasLimit, currentGasLimit: current.gasLimit) else { return false }
 
@@ -60,39 +60,41 @@ public extension Web3 {
     ///
     /// Calculation for current `Block` based on parents block object only
     ///
-    /// If passed block isn't `ChainVersion.London` one will return
+    /// If passed block isn't `ChainVersion.London` nil will return
     ///
     /// - Parameter parent: Parent `Block`
     /// - Returns: Amount of expected base fee for current `Block`
-    static func calcBaseFee(_ parent: Block) -> BigUInt {
+    static func calcBaseFee(_ parent: Block) -> BigUInt? {
+        guard let parentBaseFee = parent.baseFeePerGas else { return nil }
+
         // If given blocks ChainVersion is lower than London — always returns InitialBaseFee
-        guard parent.chainVersion >= .London else { return Web3.InitialBaseFee }
+        guard parent.mainChainVersion >= .London else { return Web3.InitialBaseFee }
 
         let parentGasTarget = parent.gasLimit / Web3.ElasticityMultiplier
 
         if parent.gasUsed > parentGasTarget {
             // If the parent block used more gas than its target, the baseFee should increase.
             let gasUsedDelta = parent.gasUsed - parentGasTarget
-            let baseFeePerGasDelta = max(parent.baseFeePerGas * gasUsedDelta / parentGasTarget / Web3.BaseFeeChangeDenominator, 1)
-            let expectedBaseFeePerGas = parent.baseFeePerGas + baseFeePerGasDelta
+            let baseFeePerGasDelta = max(parentBaseFee * gasUsedDelta / parentGasTarget / Web3.BaseFeeChangeDenominator, 1)
+            let expectedBaseFeePerGas = parentBaseFee + baseFeePerGasDelta
 
             return expectedBaseFeePerGas
         } else if parent.gasUsed < parentGasTarget  {
             // Otherwise if the parent block used less gas than its target, the baseFee should decrease.
             let gasUsedDelta = parentGasTarget - parent.gasUsed
-            let baseFeePerGasDelta = parent.baseFeePerGas * gasUsedDelta / parentGasTarget / Web3.BaseFeeChangeDenominator
-            let expectedBaseFeePerGas = parent.baseFeePerGas - baseFeePerGasDelta
+            let baseFeePerGasDelta = parentBaseFee * gasUsedDelta / parentGasTarget / Web3.BaseFeeChangeDenominator
+            let expectedBaseFeePerGas = parentBaseFee - baseFeePerGasDelta
 
             return expectedBaseFeePerGas
         } else {
             // If the parent gasUsed is the same as the target, the baseFee remains unchanged.
-            return parent.baseFeePerGas
+            return parentBaseFee
         }
     }
 }
 
 public extension Web3 {
-    enum ChainVersion: BigUInt {
+    enum MainChainVersion: BigUInt {
         /// Byzantium switch block
         ///
         /// Date: 16.10.2017
@@ -149,29 +151,29 @@ public extension Web3 {
         }
     }
 
-    static func getChainVersion(of block: BigUInt) -> ChainVersion {
+    static func getChainVersion(of block: BigUInt) -> MainChainVersion {
         // Iterate given block number over each ChainVersion block numbers
         // to get the block's ChainVersion.
-        if block < ChainVersion.Constantinople.mainNetFisrtBlockNumber {
+        if block < MainChainVersion.Constantinople.mainNetFisrtBlockNumber {
             return .Byzantium
         // ~= means included in a given range
-        } else if ChainVersion.Constantinople.mainNetFisrtBlockNumber..<ChainVersion.Istanbul.mainNetFisrtBlockNumber ~= block {
+        } else if MainChainVersion.Constantinople.mainNetFisrtBlockNumber..<MainChainVersion.Istanbul.mainNetFisrtBlockNumber ~= block {
             return .Constantinople
-        } else if ChainVersion.Istanbul.mainNetFisrtBlockNumber..<ChainVersion.MuirGlacier.mainNetFisrtBlockNumber ~= block {
+        } else if MainChainVersion.Istanbul.mainNetFisrtBlockNumber..<MainChainVersion.MuirGlacier.mainNetFisrtBlockNumber ~= block {
             return .Istanbul
-        } else if ChainVersion.MuirGlacier.mainNetFisrtBlockNumber..<ChainVersion.Berlin.mainNetFisrtBlockNumber ~= block {
+        } else if MainChainVersion.MuirGlacier.mainNetFisrtBlockNumber..<MainChainVersion.Berlin.mainNetFisrtBlockNumber ~= block {
             return .MuirGlacier
-        } else if ChainVersion.Berlin.mainNetFisrtBlockNumber..<ChainVersion.London.mainNetFisrtBlockNumber ~= block {
+        } else if MainChainVersion.Berlin.mainNetFisrtBlockNumber..<MainChainVersion.London.mainNetFisrtBlockNumber ~= block {
             return .Berlin
-        } else if ChainVersion.London.mainNetFisrtBlockNumber..<ChainVersion.ArrowGlacier.mainNetFisrtBlockNumber ~= block {
+        } else if MainChainVersion.London.mainNetFisrtBlockNumber..<MainChainVersion.ArrowGlacier.mainNetFisrtBlockNumber ~= block {
             return .London
-        } else if block >= ChainVersion.ArrowGlacier.mainNetFisrtBlockNumber {
+        } else if block >= MainChainVersion.ArrowGlacier.mainNetFisrtBlockNumber {
             // Pass to the default return.
         }
         return .ArrowGlacier
     }
 }
 
-extension Web3.ChainVersion: Comparable {
-    public static func < (lhs: Web3.ChainVersion, rhs: Web3.ChainVersion) -> Bool { return lhs.mainNetFisrtBlockNumber < rhs.mainNetFisrtBlockNumber }
+extension Web3.MainChainVersion: Comparable {
+    public static func < (lhs: Web3.MainChainVersion, rhs: Web3.MainChainVersion) -> Bool { return lhs.mainNetFisrtBlockNumber < rhs.mainNetFisrtBlockNumber }
  }

Sources/web3swift/Web3/Web3+JSONRPC.swift

@@ -109,6 +109,7 @@ public struct JSONRPCresponse: Decodable{
                                   [String: Int].self,
                                   [String: [String: [String: [String]]]].self]
 
+    // FIXME: Make me a real generic
     public init(from decoder: Decoder) throws {
         let container = try decoder.container(keyedBy: JSONRPCresponseKeys.self)
         let id: Int = try container.decode(Int.self, forKey: .id)
@@ -164,24 +165,26 @@ public struct JSONRPCresponse: Decodable{
         self.init(id: id, jsonrpc: jsonrpc, result: result, error: nil)
     }
 
+    // FIXME: Make me a real generic
     /// Get the JSON RCP reponse value by deserializing it into some native <T> class.
     ///
     /// Returns nil if serialization fails
     public func getValue<T>() -> T? {
-        let slf = T.self
-        if slf == BigUInt.self {
+        let type = T.self
+
+        if type == BigUInt.self {
             guard let string = self.result as? String else {return nil}
             guard let value = BigUInt(string.stripHexPrefix(), radix: 16) else {return nil}
             return value as? T
-        } else if slf == BigInt.self {
+        } else if type == BigInt.self {
             guard let string = self.result as? String else {return nil}
             guard let value = BigInt(string.stripHexPrefix(), radix: 16) else {return nil}
             return value as? T
-        } else if slf == Data.self {
+        } else if type == Data.self {
             guard let string = self.result as? String else {return nil}
             guard let value = Data.fromHex(string) else {return nil}
             return value as? T
-        } else if slf == EthereumAddress.self {
+        } else if type == EthereumAddress.self {
             guard let string = self.result as? String else {return nil}
             guard let value = EthereumAddress(string, ignoreChecksum: true) else {return nil}
             return value as? T
@@ -193,25 +196,25 @@ public struct JSONRPCresponse: Decodable{
 //            guard let value = self.result as? T else {return nil}
 //            return value
 //        }
-        else if slf == [BigUInt].self {
+        else if type == [BigUInt].self {
             guard let string = self.result as? [String] else {return nil}
             let values = string.compactMap { (str) -> BigUInt? in
                 return BigUInt(str.stripHexPrefix(), radix: 16)
             }
             return values as? T
-        } else if slf == [BigInt].self {
+        } else if type == [BigInt].self {
             guard let string = self.result as? [String] else {return nil}
             let values = string.compactMap { (str) -> BigInt? in
                 return BigInt(str.stripHexPrefix(), radix: 16)
             }
             return values as? T
-        } else if slf == [Data].self {
+        } else if type == [Data].self {
             guard let string = self.result as? [String] else {return nil}
             let values = string.compactMap { (str) -> Data? in
                 return Data.fromHex(str)
             }
             return values as? T
-        } else if slf == [EthereumAddress].self {
+        } else if type == [EthereumAddress].self {
             guard let string = self.result as? [String] else {return nil}
             let values = string.compactMap { (str) -> EthereumAddress? in
                 return EthereumAddress(str, ignoreChecksum: true)

Sources/web3swift/Web3/Web3+Structures.swift

@@ -216,7 +216,7 @@ public struct Block: Decodable {
     public var size: BigUInt
     public var gasLimit: BigUInt
     public var gasUsed: BigUInt
-    public var baseFeePerGas: BigUInt
+    public var baseFeePerGas: BigUInt?
     public var timestamp: Date
     public var transactions: [TransactionInBlock]
     public var uncles: [Data]
@@ -247,7 +247,7 @@ public struct Block: Decodable {
     }
 
     /// Returns chain version of mainnet block with such number
-    var chainVersion: Web3.ChainVersion { Web3.getChainVersion(of: number) }
+    var mainChainVersion: Web3.MainChainVersion { Web3.getChainVersion(of: number) }
 }
 
 extension Block {
@@ -278,7 +278,9 @@ extension Block {
         self.size = try container.decodeHex(to: BigUInt.self, key: .size)
         self.gasLimit = try container.decodeHex(to: BigUInt.self, key: .gasLimit)
         self.gasUsed = try container.decodeHex(to: BigUInt.self, key: .gasUsed)
-        self.baseFeePerGas = try container.decodeHex(to: BigUInt.self, key: .baseFeePerGas)
+
+        // optional, since pre EIP-1559 block haven't such property.
+        self.baseFeePerGas = try? container.decodeHex(to: BigUInt.self, key: .baseFeePerGas)
 
         self.timestamp = try container.decodeHex(to: Date.self, key: .timestamp)