Move source files to where SPM expectes them to be

Sources/Stencil/Template.swift

@@ -0,0 +1,83 @@
+import Foundation
+import PathKit
+
+#if os(Linux)
+// swiftlint:disable:next prefixed_toplevel_constant
+let NSFileNoSuchFileError = 4
+#endif
+
+/// A class representing a template
+open class Template: ExpressibleByStringLiteral {
+  let templateString: String
+  var environment: Environment
+
+  /// The list of parsed (lexed) tokens
+  public let tokens: [Token]
+
+  /// The name of the loaded Template if the Template was loaded from a Loader
+  public let name: String?
+
+  /// Create a template with a template string
+  public required init(templateString: String, environment: Environment? = nil, name: String? = nil) {
+    self.environment = environment ?? Environment()
+    self.name = name
+    self.templateString = templateString
+
+    let lexer = Lexer(templateName: name, templateString: templateString)
+    tokens = lexer.tokenize()
+  }
+
+  /// Create a template with the given name inside the given bundle
+  @available(*, deprecated, message: "Use Environment/FileSystemLoader instead")
+  public convenience init(named: String, inBundle bundle: Bundle? = nil) throws {
+    let useBundle = bundle ?? Bundle.main
+    guard let url = useBundle.url(forResource: named, withExtension: nil) else {
+      throw NSError(domain: NSCocoaErrorDomain, code: NSFileNoSuchFileError, userInfo: nil)
+    }
+
+    try self.init(URL: url)
+  }
+
+  /// Create a template with a file found at the given URL
+  @available(*, deprecated, message: "Use Environment/FileSystemLoader instead")
+  public convenience init(URL: Foundation.URL) throws {
+    try self.init(path: Path(URL.path))
+  }
+
+  /// Create a template with a file found at the given path
+  @available(*, deprecated, message: "Use Environment/FileSystemLoader instead")
+  public convenience init(path: Path, environment: Environment? = nil, name: String? = nil) throws {
+    self.init(templateString: try path.read(), environment: environment, name: name)
+  }
+
+  // MARK: ExpressibleByStringLiteral
+
+  // Create a templaVte with a template string literal
+  public required convenience init(stringLiteral value: String) {
+    self.init(templateString: value)
+  }
+
+  // Create a template with a template string literal
+  public required convenience init(extendedGraphemeClusterLiteral value: StringLiteralType) {
+    self.init(stringLiteral: value)
+  }
+
+  // Create a template with a template string literal
+  public required convenience init(unicodeScalarLiteral value: StringLiteralType) {
+    self.init(stringLiteral: value)
+  }
+
+  /// Render the given template with a context
+  public func render(_ context: Context) throws -> String {
+    let context = context
+    let parser = TokenParser(tokens: tokens, environment: context.environment)
+    let nodes = try parser.parse()
+    return try renderNodes(nodes, context)
+  }
+
+  // swiftlint:disable discouraged_optional_collection
+  /// Render the given template
+  open func render(_ dictionary: [String: Any]? = nil) throws -> String {
+    try render(Context(dictionary: dictionary ?? [:], environment: environment))
+  }
+}