ec4ef9aa04
* Update from hummingbird-project-template 572d468b2cabeca286314c5a35196bd42445c8ef * run swift-format * Remove .swiftformat --------- Co-authored-by: adam-fowler <adam-fowler@users.noreply.github.com> Co-authored-by: Adam Fowler <adamfowler71@gmail.com>
56 lines
1.6 KiB
Swift
56 lines
1.6 KiB
Swift
//===----------------------------------------------------------------------===//
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//
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// This source file is part of the Hummingbird server framework project
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//
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// Copyright (c) 2021-2021 the Hummingbird authors
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// Licensed under Apache License v2.0
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//
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// See LICENSE.txt for license information
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// See hummingbird/CONTRIBUTORS.txt for the list of Hummingbird authors
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//
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// SPDX-License-Identifier: Apache-2.0
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//
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//===----------------------------------------------------------------------===//
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/// Lambda function. Can add this to object being rendered to filter contents of objects.
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///
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/// See http://mustache.github.io/mustache.5.html for more details on
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/// mustache lambdas.
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/// e.g
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/// ```
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/// struct Object {
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/// let name: String
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/// let wrapped: MustacheLambda
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/// }
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/// let willy = Object(name: "Willy", wrapped: .init({ string in
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/// return "<b>\(string)</b>"
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/// }))
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/// let mustache = "{{#wrapped}}{{name}} is awesome.{{/wrapped}}"
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/// let template = try MustacheTemplate(string: mustache)
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/// let output = template.render(willy)
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/// print(output) // <b>Willy is awesome</b>
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/// ```
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///
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public struct MustacheLambda {
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/// lambda callback
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public typealias Callback = (String) -> Any?
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let callback: Callback
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/// Initialize `MustacheLambda`
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/// - Parameter cb: function to be called by lambda
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public init(_ cb: @escaping Callback) {
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self.callback = cb
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}
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/// Initialize `MustacheLambda`
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/// - Parameter cb: function to be called by lambda
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public init(_ cb: @escaping () -> Any?) {
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self.callback = { _ in cb() }
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}
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internal func callAsFunction(_ s: String) -> Any? {
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self.callback(s)
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}
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}
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