01b1f21ed6
* Dynamic names support * Add support for dynamic names in parent tags * Support all dynamic names spec * Swift 5.8 compile fix
78 lines
3.0 KiB
Swift
78 lines
3.0 KiB
Swift
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This source file is part of the Hummingbird server framework project
|
|
//
|
|
// Copyright (c) 2021-2024 the Hummingbird authors
|
|
// Licensed under Apache License v2.0
|
|
//
|
|
// See LICENSE.txt for license information
|
|
// See hummingbird/CONTRIBUTORS.txt for the list of Hummingbird authors
|
|
//
|
|
// SPDX-License-Identifier: Apache-2.0
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// Class holding Mustache template
|
|
public struct MustacheTemplate: Sendable {
|
|
/// Initialize template
|
|
/// - Parameter string: Template text
|
|
/// - Throws: MustacheTemplate.Error
|
|
public init(string: String) throws {
|
|
self.tokens = try Self.parse(string)
|
|
self.filename = nil
|
|
}
|
|
|
|
/// Render object using this template
|
|
/// - Parameters
|
|
/// - object: Object to render
|
|
/// - library: library template uses to access partials
|
|
/// - Returns: Rendered text
|
|
public func render(_ object: Any, library: MustacheLibrary? = nil) -> String {
|
|
self.render(context: .init(object, library: library))
|
|
}
|
|
|
|
/// Render object using this template
|
|
/// - Parameters
|
|
/// - object: Object to render
|
|
/// - library: library template uses to access partials
|
|
/// - reload: Should I reload this template when rendering. This is only available in debug builds
|
|
/// - Returns: Rendered text
|
|
public func render(_ object: Any, library: MustacheLibrary? = nil, reload: Bool) -> String {
|
|
#if DEBUG
|
|
if reload {
|
|
guard let filename else {
|
|
preconditionFailure("Can only use reload if template was generated from a file")
|
|
}
|
|
do {
|
|
guard let template = try MustacheTemplate(filename: filename) else { return "Cannot find template at \(filename)" }
|
|
return template.render(context: .init(object, library: library, reloadPartials: reload))
|
|
} catch {
|
|
return "\(error)"
|
|
}
|
|
}
|
|
#endif
|
|
return self.render(context: .init(object, library: library))
|
|
}
|
|
|
|
internal init(_ tokens: [Token]) {
|
|
self.tokens = tokens
|
|
self.filename = nil
|
|
}
|
|
|
|
enum Token: Sendable {
|
|
case text(String)
|
|
case variable(name: String, transforms: [String] = [])
|
|
case unescapedVariable(name: String, transforms: [String] = [])
|
|
case section(name: String, transforms: [String] = [], template: MustacheTemplate)
|
|
case invertedSection(name: String, transforms: [String] = [], template: MustacheTemplate)
|
|
case blockDefinition(name: String, template: MustacheTemplate)
|
|
case blockExpansion(name: String, default: MustacheTemplate, indentation: String?)
|
|
case partial(String, indentation: String?, inherits: [String: MustacheTemplate]?)
|
|
case dynamicNamePartial(String, indentation: String?, inherits: [String: MustacheTemplate]?)
|
|
case contentType(MustacheContentType)
|
|
}
|
|
|
|
var tokens: [Token]
|
|
let filename: String?
|
|
}
|