StructuredQueries Bool binding support (#171)

* StructuredQueries Bool binding support

- [ ] Update package when this is merged: pointfreeco/swift-structured-queries#164

* unsigned integers

* wip

* wip

Author: stephencelis

Examples/Examples.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved

@@ -82,7 +82,7 @@ struct ReminderTag: Hashable, Identifiable {
 }
 
 @Table @Selection
-struct ReminderText: StructuredQueries.FTS5 {
+struct ReminderText: StructuredQueriesSQLite.FTS5 {
   let rowid: Int
   let title: String
   let notes: String

Examples/Reminders/Schema.swift

@@ -39,7 +39,7 @@ let package = Package(
     .package(url: "https://github.com/pointfreeco/xctest-dynamic-overlay", from: "1.5.0"),
     .package(url: "https://github.com/pointfreeco/swift-sharing", from: "2.3.0"),
     .package(url: "https://github.com/pointfreeco/swift-snapshot-testing", from: "1.18.4"),
-    .package(url: "https://github.com/pointfreeco/swift-structured-queries", from: "0.16.0"),
+    .package(url: "https://github.com/pointfreeco/swift-structured-queries", from: "0.19.0"),
   ],
   targets: [
     .target(

Package.resolved

@@ -98,20 +98,26 @@ extension [QueryBinding] {
 extension QueryBinding {
   fileprivate func result(db: OpaquePointer?) {
     switch self {
-    case .blob(let value):
-      sqlite3_result_blob(db, Array(value), Int32(value.count), SQLITE_TRANSIENT)
-    case .double(let value):
-      sqlite3_result_double(db, value)
-    case .date(let value):
-      sqlite3_result_text(db, value.iso8601String, -1, SQLITE_TRANSIENT)
-    case .int(let value):
-      sqlite3_result_int64(db, value)
+    case .blob(let blob):
+      sqlite3_result_blob(db, Array(blob), Int32(blob.count), SQLITE_TRANSIENT)
+    case .bool(let bool):
+      sqlite3_result_int64(db, bool ? 1 : 0)
+    case .double(let double):
+      sqlite3_result_double(db, double)
+    case .date(let date):
+      sqlite3_result_text(db, date.iso8601String, -1, SQLITE_TRANSIENT)
+    case .int(let int):
+      sqlite3_result_int64(db, int)
     case .null:
       sqlite3_result_null(db)
-    case .text(let value):
-      sqlite3_result_text(db, value, -1, SQLITE_TRANSIENT)
-    case .uuid(let value):
-      sqlite3_result_text(db, value.uuidString.lowercased(), -1, SQLITE_TRANSIENT)
+    case .text(let text):
+      sqlite3_result_text(db, text, -1, SQLITE_TRANSIENT)
+    case .uint(let uint) where uint <= UInt64(Int64.max):
+      sqlite3_result_int64(db, Int64(uint))
+    case .uint(let uint):
+      sqlite3_result_error(db, "Unsigned integer \(uint) overflows Int64.max", -1)
+    case .uuid(let uuid):
+      sqlite3_result_text(db, uuid.uuidString.lowercased(), -1, SQLITE_TRANSIENT)
     case .invalid(let error):
       sqlite3_result_error(db, error.underlyingError.localizedDescription, -1)
     }

Package.swift

@@ -150,6 +150,8 @@ extension QueryBinding {
       switch self {
       case let .blob(blob):
         return Data(blob).databaseValue
+      case let .bool(bool):
+        return (bool ? 1 : 0).databaseValue
       case let .date(date):
         return date.iso8601String.databaseValue
       case let .double(double):
@@ -160,6 +162,10 @@ extension QueryBinding {
         return .null
       case let .text(text):
         return text.databaseValue
+      case let .uint(uint) where uint <= UInt64(Int64.max):
+        return uint.databaseValue
+      case let .uint(uint):
+        throw Int64OverflowError(unsignedInteger: uint)
       case let .uuid(uuid):
         return uuid.uuidString.lowercased().databaseValue
       case let .invalid(error):
@@ -168,3 +174,12 @@ extension QueryBinding {
     }
   }
 }
+
+@usableFromInline
+struct Int64OverflowError: Error {
+  let unsignedInteger: UInt64
+  @usableFromInline
+  init(unsignedInteger: UInt64) {
+    self.unsignedInteger = unsignedInteger
+  }
+}

Sources/StructuredQueriesGRDBCore/CustomFunctions.swift

@@ -68,6 +68,13 @@ struct SQLiteQueryDecoder: QueryDecoder {
     return String(cString: sqlite3_column_text(statement, currentIndex))
   }
 
+  @inlinable
+  mutating func decode(_ columnType: UInt64.Type) throws -> UInt64? {
+    guard let n = try decode(Int64.self) else { return nil }
+    guard n >= 0 else { throw UInt64OverflowError(signedInteger: n) }
+    return UInt64(n)
+  }
+
   @inlinable
   mutating func decode(_ columnType: UUID.Type) throws -> UUID? {
     guard let uuidString = try decode(String.self) else { return nil }
@@ -81,3 +88,13 @@ struct InvalidUUID: Error {
   @usableFromInline
   init() {}
 }
+
+@usableFromInline
+struct UInt64OverflowError: Error {
+  let signedInteger: Int64
+
+  @usableFromInline
+  init(signedInteger: Int64) {
+    self.signedInteger = signedInteger
+  }
+}