Dactyloidae iOS initial commit

mobile/ios/ThirdParty/SQLite.swift/Sources/SQLite/Helpers.swift

@@ -0,0 +1,130 @@
+//
+// SQLite.swift
+// https://github.com/stephencelis/SQLite.swift
+// Copyright © 2014-2015 Stephen Celis.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+//
+
+#if SQLITE_SWIFT_STANDALONE
+import sqlite3
+#elseif SQLITE_SWIFT_SQLCIPHER
+import SQLCipher
+#else
+import SQLite3
+#endif
+
+public typealias Star = (Expression<Binding>?, Expression<Binding>?) -> Expression<Void>
+
+public func *(_: Expression<Binding>?, _: Expression<Binding>?) -> Expression<Void> {
+    return Expression(literal: "*")
+}
+
+public protocol _OptionalType {
+
+    associatedtype WrappedType
+
+}
+
+extension Optional : _OptionalType {
+
+    public typealias WrappedType = Wrapped
+
+}
+
+// let SQLITE_STATIC = unsafeBitCast(0, sqlite3_destructor_type.self)
+let SQLITE_TRANSIENT = unsafeBitCast(-1, to: sqlite3_destructor_type.self)
+
+extension String {
+
+    func quote(_ mark: Character = "\"") -> String {
+        let escaped = characters.reduce("") { string, character in
+            string + (character == mark ? "\(mark)\(mark)" : "\(character)")
+        }
+        return "\(mark)\(escaped)\(mark)"
+    }
+
+    func join(_ expressions: [Expressible]) -> Expressible {
+        var (template, bindings) = ([String](), [Binding?]())
+        for expressible in expressions {
+            let expression = expressible.expression
+            template.append(expression.template)
+            bindings.append(contentsOf: expression.bindings)
+        }
+        return Expression<Void>(template.joined(separator: self), bindings)
+    }
+
+    func infix<T>(_ lhs: Expressible, _ rhs: Expressible, wrap: Bool = true) -> Expression<T> {
+        let expression = Expression<T>(" \(self) ".join([lhs, rhs]).expression)
+        guard wrap else {
+            return expression
+        }
+        return "".wrap(expression)
+    }
+
+    func prefix(_ expressions: Expressible) -> Expressible {
+        return "\(self) ".wrap(expressions) as Expression<Void>
+    }
+
+    func prefix(_ expressions: [Expressible]) -> Expressible {
+        return "\(self) ".wrap(expressions) as Expression<Void>
+    }
+
+    func wrap<T>(_ expression: Expressible) -> Expression<T> {
+        return Expression("\(self)(\(expression.expression.template))", expression.expression.bindings)
+    }
+
+    func wrap<T>(_ expressions: [Expressible]) -> Expression<T> {
+        return wrap(", ".join(expressions))
+    }
+
+}
+
+func infix<T>(_ lhs: Expressible, _ rhs: Expressible, wrap: Bool = true, function: String = #function) -> Expression<T> {
+    return function.infix(lhs, rhs, wrap: wrap)
+}
+
+func wrap<T>(_ expression: Expressible, function: String = #function) -> Expression<T> {
+    return function.wrap(expression)
+}
+
+func wrap<T>(_ expressions: [Expressible], function: String = #function) -> Expression<T> {
+    return function.wrap(", ".join(expressions))
+}
+
+func transcode(_ literal: Binding?) -> String {
+    guard let literal = literal else { return "NULL" }
+
+    switch literal {
+    case let blob as Blob:
+        return blob.description
+    case let string as String:
+        return string.quote("'")
+    case let binding:
+        return "\(binding)"
+    }
+}
+
+func value<A: Value>(_ v: Binding) -> A {
+    return A.fromDatatypeValue(v as! A.Datatype) as! A
+}
+
+func value<A: Value>(_ v: Binding?) -> A {
+    return value(v!)
+}