46 lines
1.2 KiB
Swift
46 lines
1.2 KiB
Swift
import PathKit
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class IncludeNode : NodeType {
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let templateName: Variable
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let token: Token?
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class func parse(_ parser: TokenParser, token: Token) throws -> NodeType {
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let bits = token.components()
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guard bits.count == 2 else {
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throw TemplateSyntaxError("'include' tag takes one argument, the template file to be included")
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}
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return IncludeNode(templateName: Variable(bits[1]), token: token)
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}
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init(templateName: Variable, token: Token) {
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self.templateName = templateName
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self.token = token
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}
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func render(_ context: Context) throws -> String {
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guard let templateName = try self.templateName.resolve(context) as? String else {
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throw TemplateSyntaxError("'\(self.templateName)' could not be resolved as a string")
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}
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let template = try context.environment.loadTemplate(name: templateName)
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do {
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return try context.environment.pushTemplate(template, token: token) {
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try context.push {
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return try template.render(context)
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}
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}
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} catch {
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if let parentError = error as? TemplateSyntaxError {
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throw TemplateSyntaxError(reason: parentError.reason, parentError: parentError)
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} else {
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throw error
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}
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}
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}
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}
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