func generateBuildTargetsForRuleEntries()

in src/TulsiGenerator/PBXTargetGenerator.swift [833:925]
78 lines of code
15 McCabe index (conditional complexity)

  func generateBuildTargetsForRuleEntries(
    _ ruleEntries: Set<RuleEntry>,
    ruleEntryMap: RuleEntryMap,
    pathFilters: Set<String>?
  ) throws -> [BuildLabel: PBXNativeTarget] {
    let namedRuleEntries = generateUniqueNamesForRuleEntries(ruleEntries)

    let progressNotifier = ProgressNotifier(name: GeneratingBuildTargets,
                                            maxValue: namedRuleEntries.count)

    var testTargetLinkages = [(PBXNativeTarget, BuildLabel?, RuleEntry)]()
    var watchAppTargets = [String: (PBXNativeTarget, RuleEntry)]()
    var watchExtensionsByEntry = [RuleEntry: PBXNativeTarget]()
    var targetsByLabel = [BuildLabel: PBXNativeTarget]()

    for (name, entry) in namedRuleEntries {
      progressNotifier.incrementValue()
      let target = try createBuildTargetForRuleEntry(entry,
                                                     named: name,
                                                     ruleEntryMap: ruleEntryMap)
      targetsByLabel[entry.label] = target

      if let script = options[.PreBuildPhaseRunScript, entry.label.value] {
        let runScript = PBXShellScriptBuildPhase(shellScript: script, shellPath: "/bin/bash")
        runScript.showEnvVarsInLog = true
        target.buildPhases.insert(runScript, at: 0)
      }

      if let script = options[.PostBuildPhaseRunScript, entry.label.value] {
        let runScript = PBXShellScriptBuildPhase(shellScript: script, shellPath: "/bin/bash")
        runScript.showEnvVarsInLog = true
        target.buildPhases.append(runScript)
      }

      if let hostLabelString = entry.attributes[.test_host] as? String {
        let hostLabel = BuildLabel(hostLabelString)
        testTargetLinkages.append((target, hostLabel, entry))
      } else if entry.pbxTargetType == .UnitTest {
        // If there is no host and it's a unit test, assume it doesn't need one, i.e. it's a
        // library based test.
        testTargetLinkages.append((target, nil, entry))
      }

      switch entry.pbxTargetType {
      case .Watch2App?:
        watchAppTargets[name] = (target, entry)
      case .Watch2Extension?:
        watchExtensionsByEntry[entry] = target
      default:
        break
      }
    }

    // The watch app target must have an explicit dependency on the watch extension target.
    for (_, (watchAppTarget, watchRuleEntry)) in watchAppTargets {
      for ext in watchRuleEntry.extensions {
        if let extEntry = ruleEntryMap.ruleEntry(buildLabel: ext, depender: watchRuleEntry),
            extEntry.pbxTargetType == .Watch2Extension {
          if let watchExtensionTarget = watchExtensionsByEntry[extEntry] {
            watchAppTarget.createDependencyOn(watchExtensionTarget, proxyType: .targetReference, inProject: project)
          } else {
            localizedMessageLogger.warning("FindingWatchExtensionFailed",
                                           comment: "Message to show when the watchOS app extension %1$@ could not be found and the resulting project will not be able to launch the watch app.",
                                           values: extEntry.label.value)
          }
        }
      }
    }

    for (testTarget, testHostLabel, entry) in testTargetLinkages {
      let testHostTarget: PBXNativeTarget?
      if let hostTargetLabel = testHostLabel {
        testHostTarget = targetsByLabel[hostTargetLabel]
        if testHostTarget == nil {
          // If the user did not choose to include the host target it won't be available so the
          // linkage can be skipped. We will still force the generation of this test host target to
          // avoid issues when running tests as bundle targets in Xcode.
          localizedMessageLogger.warning("MissingTestHost",
                                         comment: "Warning to show when a user has selected an XCTest but not its host application.",
                                         values: entry.label.value, hostTargetLabel.value)
          continue
        }
      } else {
        testHostTarget = nil
      }
      updateTestTarget(testTarget,
                       withLinkageToHostTarget: testHostTarget,
                       ruleEntry: entry,
                       ruleEntryMap: ruleEntryMap,
                       pathFilters: pathFilters)
    }
    return targetsByLabel
  }