58 lines
2.1 KiB
Swift
58 lines
2.1 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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/// Protocol for objects that can be rendered as a sequence in Mustache
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protocol MustacheSequence {
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/// Render section using template
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func renderSection(with template: MustacheTemplate, context: MustacheContext) -> String
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/// Render inverted section using template
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func renderInvertedSection(with template: MustacheTemplate, context: MustacheContext) -> String
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}
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extension Sequence {
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/// Render section using template
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func renderSection(with template: MustacheTemplate, context: MustacheContext) -> String {
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var string = ""
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var sequenceContext = MustacheSequenceContext(first: true)
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var iterator = makeIterator()
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guard var currentObject = iterator.next() else { return "" }
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while let object = iterator.next() {
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string += template.render(context: context.withSequence(currentObject, sequenceContext: sequenceContext))
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currentObject = object
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sequenceContext.first = false
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sequenceContext.index += 1
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}
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sequenceContext.last = true
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string += template.render(context: context.withSequence(currentObject, sequenceContext: sequenceContext))
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return string
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}
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/// Render inverted section using template
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func renderInvertedSection(with template: MustacheTemplate, context: MustacheContext) -> String {
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var iterator = makeIterator()
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if iterator.next() == nil {
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return template.render(context: context.withObject(self))
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}
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return ""
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}
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}
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extension Array: MustacheSequence {}
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extension Set: MustacheSequence {}
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extension ReversedCollection: MustacheSequence {}
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