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//===--------------- GeneratePCHJob.swift - Generate PCH Job ----===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2019 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
import struct TSCBasic.RelativePath
extension Driver {
mutating func addGeneratePCHFlags(commandLine: inout [Job.ArgTemplate], inputs: inout [TypedVirtualPath]) throws {
commandLine.appendFlag("-frontend")
try addCommonFrontendOptions(
commandLine: &commandLine, inputs: &inputs, kind: .generatePCH, bridgingHeaderHandling: .parsed)
try commandLine.appendLast(.indexStorePath, from: &parsedOptions)
commandLine.appendFlag(.emitPch)
}
mutating func generatePCHJob(input: TypedVirtualPath, output: TypedVirtualPath) throws -> Job {
var inputs = [TypedVirtualPath]()
var outputs = [TypedVirtualPath]()
var commandLine: [Job.ArgTemplate] = swiftCompilerPrefixArgs.map { Job.ArgTemplate.flag($0) }
if try supportsBridgingHeaderPCHCommand() {
try addExplicitPCHBuildArguments(inputs: &inputs, commandLine: &commandLine)
addCacheReplayMapping(to: &commandLine)
} else {
try addGeneratePCHFlags(commandLine: &commandLine, inputs: &inputs)
}
// TODO: Should this just be pch output with extension changed?
if parsedOptions.hasArgument(.serializeDiagnostics), let outputDirectory = parsedOptions.getLastArgument(.pchOutputDir)?.asSingle {
commandLine.appendFlag(.serializeDiagnosticsPath)
let path: VirtualPath
if let outputPath = try outputFileMap?.existingOutput(inputFile: input.fileHandle, outputType: .diagnostics) {
path = VirtualPath.lookup(outputPath)
} else if let modulePath = parsedOptions.getLastArgument(.emitModulePath) {
// TODO: does this hash need to be persistent?
let code = UInt(bitPattern: modulePath.asSingle.hashValue)
let outputName = input.file.basenameWithoutExt + "-" + String(code, radix: 36)
path = try VirtualPath(path: outputDirectory).appending(component: outputName.appendingFileTypeExtension(.diagnostics))
} else {
path =
try VirtualPath.createUniqueTemporaryFile(
RelativePath(validating: input.file.basenameWithoutExt.appendingFileTypeExtension(.diagnostics)))
}
commandLine.appendPath(path)
outputs.append(.init(file: path.intern(), type: .diagnostics))
}
// New compute and add inputs and outputs.
if parsedOptions.hasArgument(.pchOutputDir) &&
!parsedOptions.contains(.driverExplicitModuleBuild) {
try commandLine.appendLast(.pchOutputDir, from: &parsedOptions)
} else {
commandLine.appendFlag(.o)
commandLine.appendPath(output.file)
}
outputs.append(output)
inputs.append(input)
try addPathArgument(input.file, to: &commandLine)
let cacheKeys = try computeOutputCacheKeyForJob(commandLine: commandLine, inputs: [(input, 0)])
return Job(
moduleName: moduleOutputInfo.name,
kind: .generatePCH,
tool: try toolchain.resolvedTool(.swiftCompiler),
commandLine: commandLine,
displayInputs: [],
inputs: inputs,
primaryInputs: [],
outputs: outputs,
outputCacheKeys: cacheKeys
)
}
}
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