47 lines
1.4 KiB
Swift
47 lines
1.4 KiB
Swift
open class Namespace {
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public typealias TagParser = (TokenParser, Token) throws -> NodeType
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var tags = [String: TagParser]()
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var filters = [String: Filter]()
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public init() {
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registerDefaultTags()
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registerDefaultFilters()
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}
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fileprivate func registerDefaultTags() {
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registerTag("for", parser: ForNode.parse)
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registerTag("if", parser: IfNode.parse)
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registerTag("ifnot", parser: IfNode.parse_ifnot)
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#if !os(Linux)
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registerTag("now", parser: NowNode.parse)
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#endif
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registerTag("include", parser: IncludeNode.parse)
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registerTag("extends", parser: ExtendsNode.parse)
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registerTag("block", parser: BlockNode.parse)
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}
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fileprivate func registerDefaultFilters() {
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registerFilter("capitalize", filter: capitalise)
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registerFilter("uppercase", filter: uppercase)
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registerFilter("lowercase", filter: lowercase)
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}
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/// Registers a new template tag
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open func registerTag(_ name: String, parser: @escaping TagParser) {
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tags[name] = parser
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}
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/// Registers a simple template tag with a name and a handler
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open func registerSimpleTag(_ name: String, handler: @escaping (Context) throws -> String) {
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registerTag(name, parser: { parser, token in
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return SimpleNode(handler: handler)
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})
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}
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/// Registers a template filter with the given name
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open func registerFilter(_ name: String, filter: @escaping Filter) {
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filters[name] = filter
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}
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}
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