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Implement GraphModuleLoader

This commit is contained in:
Pedro Piñera 2018-05-23 18:22:39 +02:00
parent 61eabcb711
commit 9ea89d1cac
2 changed files with 83 additions and 0 deletions
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4
App.xcodeproj/project.pbxproj
View File

@ -69,6 +69,7 @@
B958960B208B578700F00ACF /* GraphCircularDetector.swift in Sources */ = {isa = PBXBuildFile; fileRef = B958960A208B578700F00ACF /* GraphCircularDetector.swift */; };
B958960D208B607400F00ACF /* GraphCircularDetectorTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = B958960C208B607400F00ACF /* GraphCircularDetectorTests.swift */; };
B97DDE9C20B448250052EB48 /* GraphTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = B97DDE9B20B448250052EB48 /* GraphTests.swift */; };
B99D5D4420B5C8A400249856 /* GraphModuleLoader.swift in Sources */ = {isa = PBXBuildFile; fileRef = B99D5D4320B5C8A400249856 /* GraphModuleLoader.swift */; };
B9B593C5209C121000C59DA2 /* Sentry.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = B9B593C4209C121000C59DA2 /* Sentry.framework */; };
B9B593C7209C13BE00C59DA2 /* ErrorHandler.swift in Sources */ = {isa = PBXBuildFile; fileRef = B9B593C6209C13BE00C59DA2 /* ErrorHandler.swift */; };
B9B593C8209C13CB00C59DA2 /* Sentry.framework in Embed Frameworks */ = {isa = PBXBuildFile; fileRef = B9B593C4209C121000C59DA2 /* Sentry.framework */; settings = {ATTRIBUTES = (CodeSignOnCopy, RemoveHeadersOnCopy, ); }; };
@ -308,6 +309,7 @@
B958960A208B578700F00ACF /* GraphCircularDetector.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = GraphCircularDetector.swift; sourceTree = "<group>"; };
B958960C208B607400F00ACF /* GraphCircularDetectorTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = GraphCircularDetectorTests.swift; sourceTree = "<group>"; };
B97DDE9B20B448250052EB48 /* GraphTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = GraphTests.swift; sourceTree = "<group>"; };
B99D5D4320B5C8A400249856 /* GraphModuleLoader.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = GraphModuleLoader.swift; sourceTree = "<group>"; };
B9B593C4209C121000C59DA2 /* Sentry.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; path = Sentry.framework; sourceTree = "<group>"; };
B9B593C6209C13BE00C59DA2 /* ErrorHandler.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = ErrorHandler.swift; sourceTree = "<group>"; };
B9B59439209C176600C59DA2 /* ErrorHandlerTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ErrorHandlerTests.swift; sourceTree = "<group>"; };
@ -840,6 +842,7 @@
B9FB2DD42086538E00BC2FB3 /* GraphLoaderCache.swift */,
B95895FE208A37B300F00ACF /* GraphJSONInitiatable.swift */,
B958960A208B578700F00ACF /* GraphCircularDetector.swift */,
B99D5D4320B5C8A400249856 /* GraphModuleLoader.swift */,
);
path = Loader;
sourceTree = "<group>";
@ -1131,6 +1134,7 @@
B9E2DCAA208774550061DF86 /* CommandRegistry.swift in Sources */,
B95895F9208A2B7C00F00ACF /* TargetGenerator.swift in Sources */,
B9B593C7209C13BE00C59DA2 /* ErrorHandler.swift in Sources */,
B99D5D4420B5C8A400249856 /* GraphModuleLoader.swift in Sources */,
B9B629AB20864E3A00EE9E07 /* Printer.swift in Sources */,
B92122BD20AF372F009C4691 /* CreateIssueCommand.swift in Sources */,
B95895F5208A2ADB00F00ACF /* GeneratorContext.swift in Sources */,

79
App/xcbuddykit/Sources/Loader/GraphModuleLoader.swift Normal file
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@ -0,0 +1,79 @@
import Basic
import Foundation
enum GraphModuleLoaderError: FatalError {
case fileNotFound(AbsolutePath)
case fileLoadError(AbsolutePath, Error)
/// Error type.
var type: ErrorType {
switch self {
case .fileNotFound:
return .abort
case .fileLoadError:
return .bugSilent
}
}
/// Error description.
var description: String {
switch self {
case let .fileNotFound(path):
return "Couldn't file file at path \(path)"
case let .fileLoadError(path):
return "Error loading file at path \(path)"
}
}
}
/// Interface of a module loader.
protocol GraphModuleLoading: AnyObject {
/// Given a path, it loads all the paths that should be part of the module.
/// Any file can include other files in the same module by adding a comment line at
/// the top:
/// //include: ./shared.swift
/// Notice that the path needs to be relative to the file.
///
/// - Parameter path: path whose module will be loaded.
/// - Parameter context: context.
/// - Returns: list of files that should be part of the module.
func load(_ path: AbsolutePath, context: Contexting) throws -> Set<AbsolutePath>
}
final class GraphModuleLoader: GraphModuleLoading {
/// Given a path, it loads all the paths that should be part of the module.
/// Any file can include other files in the same module by adding a comment line at
/// the top:
/// //include: ./shared.swift
/// Notice that the path needs to be relative to the file.
///
/// TODO: Detect circular dependencies
///
/// - Parameter path: path whose module will be loaded.
/// - Parameter context: context.
/// - Returns: list of files that should be part of the module.
func load(_ path: AbsolutePath, context: Contexting) throws -> Set<AbsolutePath> {
var paths = Set<AbsolutePath>()
if !context.fileHandler.exists(path) {
throw GraphModuleLoaderError.fileNotFound(path)
}
paths.insert(path)
var content: String!
do {
content = try String(contentsOf: URL(fileURLWithPath: path.asString))
} catch {
throw GraphModuleLoaderError.fileLoadError(path, error)
}
// swiftlint:disable:next force_try
let regex = try! NSRegularExpression(pattern: "//include:\\s+\"?(.+)\"?", options: [])
let range = NSRange(location: 0, length: content.count)
let matches = regex.matches(in: content, options: [], range: range)
try matches.forEach { match in
let matchRange = match.range(at: 1)
let relativePath = RelativePath((content as NSString).substring(with: matchRange))
paths.formUnion(try load(path.parentDirectory.appending(relativePath),
context: context))
}
return paths
}
}