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1// SPDX-FileCopyrightText: 2025 The Project Pterodactyl Developers
2//
3// SPDX-License-Identifier: MPL-2.0
4
5import Foundation
6
7public struct ImportParser {
8 private var lexer: PterodactylSyntax.Lexer
9 public private(set) var imports: [String] = []
10
11 public init(input: String) {
12 self.lexer = PterodactylSyntax.Lexer(input: input)
13 }
14
15 public mutating func parseHeader() {
16 while true {
17 guard let token = nextSignificantToken() else { return }
18 switch token.kind {
19 case .keyword(.import): parseImportStatement()
20 default: return
21 }
22 }
23 }
24
25 /// Returns the next non-whitespace token.
26 private mutating func nextSignificantToken() -> Token? {
27 var token = lexer.nextToken()
28 while token?.kind.isTrivia == true {
29 token = lexer.nextToken()
30 }
31
32 guard let token else { return nil }
33 return Token(kind: token.kind, text: token.text)
34 }
35
36 /// Parses a single `import xyz` line.
37 private mutating func parseImportStatement() {
38 guard let next = nextSignificantToken() else { return }
39 guard next.kind == .identifier else { return }
40 imports.append(next.text)
41 }
42}