commit 3bc7bcc6b30231f609829c96d0f22d1831c3803e · jonmsterling.com/swift-pterodactyl

+5 -1

Package.swift

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       import PackageDescription

     

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       let package = Package(

     

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       	name: "PterodactylKernel",

     

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       	name: "Pterodactyl",

     

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       	platforms: [.macOS(.v15)],

     

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       	products: [

     

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       		// Products define the executables and libraries a package produces, making them visible to other packages.

     

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       		.library(

     
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       		// Targets can depend on other targets in this package and products from dependencies.

     

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       		.target(

     

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       			name: "PterodactylKernel",

     

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       		),

     

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       		.target(

     

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       			name: "PterodactylSyntax"

     

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       		),

     

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       		.testTarget(

     

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       			name: "PterodactylKernelTests",

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Sources/PterodactylKernel/PterodactylKernel.swift

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       // SPDX-FileCopyrightText: 2025 The Project Pterodactyl Developers

     

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       //

     

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       // SPDX-License-Identifier: MPL-2.0

+21

Sources/PterodactylSyntax/Cursor.swift

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       import Foundation

     

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       public struct Cursor<L: Language>: Sendable {

     

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       	let node: Child<L>

     

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       	let utf16Offset: Int

     

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       	let children: [Cursor<L>]

     

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       	init(node: Child<L>, utf16Offset: Int) {

     

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       		self.node = node

     

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       		self.utf16Offset = utf16Offset

     

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       		var children: [Cursor<L>] = []

     

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       		var utf16Offset = utf16Offset

     

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       		for childNode in node.children {

     

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       			children.append(Self(node: childNode, utf16Offset: utf16Offset))

     

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       			utf16Offset += childNode.utf16Length

     

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       		}

     

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       		self.children = children

     

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       	}

     

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       }

+16

Sources/PterodactylSyntax/Protocols.swift

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       import Foundation

     

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       public protocol TreeKindType: Equatable, Sendable {

     

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       	static var error: Self { get }

     

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       }

     

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       public protocol TokenKindType: Equatable, Sendable {

     

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       	static var eof: Self { get }

     

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       }

     

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       public protocol Language {

     

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       	associatedtype TokenKind: TokenKindType

     

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       	associatedtype TreeKind: TreeKindType

     

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       	associatedtype TokenMetadata: Sendable, Equatable

     

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       	associatedtype TreeMetadata: Sendable, Equatable

     

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       }

+15

Sources/PterodactylSyntax/Token.swift

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       import Foundation

     

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       public struct Token<Kind> {

     

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       	public let kind: Kind

     

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       	public let text: String

     

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       	public let utf16Length: Int

     

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       	init(kind: Kind, text: String) {

     

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       		self.kind = kind

     

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       		self.text = text

     

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       		self.utf16Length = text.utf16.count

     

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       	}

     

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       }

     

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       extension Token: Sendable where Kind: Sendable {}

+71

Sources/PterodactylSyntax/Tree.swift

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       import Foundation

     

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       public struct Tree<L: Language>: Sendable {

     

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       	public let kind: L.TreeKind

     

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       	public let metadata: L.TreeMetadata?

     

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       	public let children: [Child<L>]

     

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       	public let utf16Length: Int

     

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       	public init(kind: L.TreeKind, metadata: L.TreeMetadata?, children: [Child<L>]) {

     

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       		self.kind = kind

     

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       		self.metadata = metadata

     

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       		self.children = children

     

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       		self.utf16Length = children.reduce(0) { length, child in

     

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       			length + child.utf16Length

     

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       		}

     

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       	}

     

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       }

     

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       public enum Child<L: Language>: Sendable {

     

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       	case token(Token<L.TokenKind>, metadata: L.TokenMetadata?)

     

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       	case tree(Tree<L>)

     

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       }

     

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       extension Tree {

     

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       	public var text: String {

     

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       		children.map(\.text).joined()

     

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       	}

     

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       }

     

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       extension Child {

     

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       	var text: String {

     

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       		switch self {

     

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       		case let .token(tok, _): tok.text

     

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       		case let .tree(tree): tree.text

     

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       		}

     

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       	}

     

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       	var utf16Length: Int {

     

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       		switch self {

     

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       		case let .token(token, metadata): token.utf16Length

     

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       		case let .tree(tree): tree.utf16Length

     

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       		}

     

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       	}

     

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       	var children: [Self] {

     

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       		switch self {

     

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       		case .token: []

     

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       		case let .tree(tree): tree.children

     

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       		}

     

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       	}

     

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       }

     

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       extension Tree: CustomStringConvertible {

     

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       	public var description: String {

     

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       		prettyPrint()

     

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       	}

     

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       	/// Pretty-print the tree with indentation.

     

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       	func prettyPrint(indent: String = "") -> String {

     

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       		var result = "\(indent)\(kind)"

     

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       		for child in children {

     

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       			switch child {

     

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       			case .token(let token, _):

     

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       				result += "\n\(indent)  \(token.kind): \(token.text.replacingOccurrences(of: "\n", with: "\\n"))"

     

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       			case .tree(let subtree):

     

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       				result += "\n" + subtree.prettyPrint(indent: indent + "  ")

     

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       			}

     

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       		}

     

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       		return result

     

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       	}

     

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       }

+20

Sources/PterodactylSyntax/Utf16Position.swift

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       import Foundation

     

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       public struct Utf16Position: Equatable, Comparable, Sendable {

     

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       	public var absoluteOffset: Int

     

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       	public var line: Int

     

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       	public var column : Int

     

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       	public init(absoluteOffset: Int, line: Int, column: Int) {

     

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       		self.absoluteOffset = absoluteOffset

     

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       		self.line = line

     

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       		self.column = column

     

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       	}

     

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       	public static func < (lhs: Utf16Position, rhs: Utf16Position) -> Bool {

     

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       		lhs.absoluteOffset < rhs.absoluteOffset

     

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       	}

     

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       }

     

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       public extension Utf16Position {

     

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       	static var zero : Self { Self(absoluteOffset: 0, line: 0, column: 0) }

     

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       }