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//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift open source project
//
// Copyright (c) 2014-2020 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See http://swift.org/LICENSE.txt for license information
// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
import LLBuildManifest
import protocol TSCBasic.OutputByteStream
/// Serializes an LLBuildManifest graph to a .dot file
struct DOTManifestSerializer {
var kindCounter = [String: Int]()
var hasEmittedStyling = Set<String>()
let manifest: LLBuildManifest
/// Creates a serializer that will serialize the given manifest.
init(manifest: LLBuildManifest) {
self.manifest = manifest
}
/// Gets a unique label for a job name
mutating func label(for command: Command) -> String {
let toolName = "\(type(of: command.tool).name)"
var label = toolName
if let count = kindCounter[label] {
label += " \(count)"
}
kindCounter[toolName, default: 0] += 1
return label
}
/// Quote the name and escape the quotes and backslashes
func quoteName(_ name: String) -> String {
"\"" + name.replacingOccurrences(of: "\"", with: "\\\"")
.replacingOccurrences(of: "\\", with: "\\\\") + "\""
}
mutating func writeDOT(to stream: OutputByteStream) {
stream.write("digraph Jobs {\n")
for (name, command) in manifest.commands {
let jobName = quoteName(label(for: command))
if !hasEmittedStyling.contains(jobName) {
stream.write(" \(jobName) [style=bold];")
stream.write("// \(name)\n")
}
for input in command.tool.inputs {
let inputName = quoteName(input.name)
if hasEmittedStyling.insert(inputName).inserted {
stream.write(" \(inputName) [fontsize=12];\n")
}
stream.write(" \(inputName) -> \(jobName) [color=blue];\n")
}
for output in command.tool.outputs {
let outputName = quoteName(output.name)
if hasEmittedStyling.insert(outputName).inserted {
stream.write(" \(outputName) [fontsize=12];\n")
}
stream.write(" \(jobName) -> \(outputName) [color=green];\n")
}
}
stream.write("}\n")
}
}
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