Add CI for DocC warnings

.github/workflows/ci.yml

@@ -35,6 +35,8 @@ jobs:
       - uses: actions/checkout@v2
       - name: Select Xcode ${{ matrix.xcode }}
         run: sudo xcode-select -s /Applications/Xcode_${{ matrix.xcode }}.app
+      - name: Compile documentation
+        run: make test-docs
       - name: Run tests
         run: make test-library
       - name: Run benchmark

Makefile

@@ -21,6 +21,19 @@ test-library:
 		-scheme ComposableArchitecture_watchOS \
 		-destination platform="$(PLATFORM_WATCHOS)"
 
+DOC_WARNINGS := $(shell xcodebuild clean docbuild \
+	-scheme ComposableArchitecture \
+	-destination platform="$(PLATFORM_MACOS)" \
+	-quiet \
+	2>&1 \
+	| grep "couldn't be resolved to known documentation" \
+	| sed 's|$(PWD)|.|g' \
+	| tr '\n' '\1')
+test-docs:
+	@test "$(DOC_WARNINGS)" = "" \
+		|| (echo "xcodebuild docbuild failed:\n\n$(DOC_WARNINGS)" | tr '\1' '\n' \
+		&& exit 1)
+
 test-examples:
 	xcodebuild test \
 		-scheme "CaseStudies (SwiftUI)" \

Sources/ComposableArchitecture/Debugging/ReducerDebugging.swift

@@ -1,8 +1,8 @@
 import CasePaths
 import Dispatch
 
-/// Determines how the string description of an action should be printed when using the ``Reducer/debug(prefix:state:action:environment:)``
-/// higher-order reducer.
+/// Determines how the string description of an action should be printed when using the
+/// ``Reducer/debug(_:state:action:actionFormat:environment:)`` higher-order reducer.
 public enum ActionFormat {
   /// Prints the action in a single line by only specifying the labels of the associated values:
   ///

Sources/ComposableArchitecture/Reducer.swift

@@ -75,10 +75,11 @@ public struct Reducer<State, Action, Environment> {
   /// action.
   ///
   /// Similar can be said for a
-  /// ``Reducer/forEach(state:action:environment:breakpointOnNil:_:_:)-3ic87`` reducer. If the
+  /// ``Reducer/forEach(state:action:environment:breakpointOnNil:file:line:)-7h573`` reducer. If the
   /// parent domain modifies the child collection by moving, removing, or modifying an element
-  /// before the ``Reducer/forEach(state:action:environment:breakpointOnNil:_:_:)-3ic87`` reducer
-  /// runs, the ``Reducer/forEach(state:action:environment:breakpointOnNil:_:_:)-3ic87`` reducer may
+  /// before the ``Reducer/forEach(state:action:environment:breakpointOnNil:file:line:)-7h573``
+  /// reducer runs, the
+  /// ``Reducer/forEach(state:action:environment:breakpointOnNil:file:line:)-7h573`` reducer may
   /// perform its action against the wrong element, an element that no longer exists, or an element
   /// in an unexpected state.
   ///
@@ -132,10 +133,11 @@ public struct Reducer<State, Action, Environment> {
   /// action.
   ///
   /// Similar can be said for a
-  /// ``Reducer/forEach(state:action:environment:breakpointOnNil:_:_:)-3ic87`` reducer. If the
+  /// ``Reducer/forEach(state:action:environment:breakpointOnNil:file:line:)-7h573`` reducer. If the
   /// parent domain modifies the child collection by moving, removing, or modifying an element
-  /// before the ``Reducer/forEach(state:action:environment:breakpointOnNil:_:_:)-3ic87`` reducer
-  /// runs, the ``Reducer/forEach(state:action:environment:breakpointOnNil:_:_:)-3ic87`` reducer may
+  /// before the ``Reducer/forEach(state:action:environment:breakpointOnNil:file:line:)-7h573``
+  /// reducer runs, the
+  /// ``Reducer/forEach(state:action:environment:breakpointOnNil:file:line:)-7h573`` reducer may
   /// perform its action against the wrong element, an element that no longer exists, or an element
   /// in an unexpected state.
   ///
@@ -191,10 +193,11 @@ public struct Reducer<State, Action, Environment> {
   /// action.
   ///
   /// Similar can be said for a
-  /// ``Reducer/forEach(state:action:environment:breakpointOnNil:_:_:)-3ic87`` reducer. If the
+  /// ``Reducer/forEach(state:action:environment:breakpointOnNil:file:line:)-7h573`` reducer. If the
   /// parent domain modifies the child collection by moving, removing, or modifying an element
-  /// before the ``Reducer/forEach(state:action:environment:breakpointOnNil:_:_:)-3ic87`` reducer
-  /// runs, the ``Reducer/forEach(state:action:environment:breakpointOnNil:_:_:)-3ic87`` reducer may
+  /// before the ``Reducer/forEach(state:action:environment:breakpointOnNil:file:line:)-7h573``
+  /// reducer runs, the
+  /// ``Reducer/forEach(state:action:environment:breakpointOnNil:file:line:)-7h573`` reducer may
   /// perform its action against the wrong element, an element that no longer exists, or an element
   /// in an unexpected state.
   ///
@@ -305,7 +308,7 @@ public struct Reducer<State, Action, Environment> {
   /// operator to pullback a reducer that operates on a single case of some state enum to work on
   /// the entire state enum.
   ///
-  /// When used with the ``combine(_:)-994ake`` operator you can define many reducers that work each
+  /// When used with the ``combine(_:)-994ak`` operator you can define many reducers that work each
   /// case of the state enum, and then _pull them back_ and _combine_ them into one big reducer that
   /// works on a large domain.
   ///
@@ -736,10 +739,11 @@ public struct Reducer<State, Action, Environment> {
   /// )
   /// ```
   ///
-  /// Take care when combining ``forEach(state:action:environment:breakpointOnNil:_:_:)-90ox5``
-  /// reducers into parent domains, as order matters. Always combine
-  /// ``forEach(state:action:environment:breakpointOnNil:_:_:)-90ox5`` reducers _before_ parent
-  /// reducers that can modify the collection.
+  /// Take care when combining
+  /// ``forEach(state:action:environment:breakpointOnNil:file:line:)-7h573`` reducers into parent
+  /// domains, as order matters. Always combine
+  /// ``forEach(state:action:environment:breakpointOnNil:file:line:)-7h573`` reducers _before_
+  /// parent reducers that can modify the collection.
   ///
   /// - Parameters:
   ///   - toLocalState: A key path that can get/set a collection of `State` elements inside
@@ -808,10 +812,11 @@ public struct Reducer<State, Action, Environment> {
   /// A version of ``pullback(state:action:environment:)`` that transforms a reducer that works on
   /// an element into one that works on a dictionary of element values.
   ///
-  /// Take care when combining ``forEach(state:action:environment:breakpointOnNil:_:_:)-xv1z``
+  /// Take care when combining
+  /// ``forEach(state:action:environment:breakpointOnNil:file:line:)-1h7qx``
   /// reducers into parent domains, as order matters. Always combine
-  /// ``forEach(state:action:environment:breakpointOnNil:_:_:)-xv1z`` reducers _before_ parent
-  /// reducers that can modify the dictionary.
+  /// ``forEach(state:action:environment:breakpointOnNil:file:line:)-1h7qx`` reducers _before_
+  /// parent reducers that can modify the dictionary.
   ///
   /// - Parameters:
   ///   - toLocalState: A key path that can get/set a dictionary of `State` values inside

Sources/ComposableArchitecture/SwiftUI/ForEachStore.swift

@@ -51,7 +51,7 @@ import SwiftUI
 /// ```
 ///
 /// Enhance its reducer using
-/// ``Reducer/forEach(state:action:environment:breakpointOnNil:_:_:)-3ic87``:
+/// ``Reducer/forEach(state:action:environment:breakpointOnNil:file:line:)-7h573``:
 ///
 /// ```swift
 /// let appReducer = todoReducer.forEach(

Sources/ComposableArchitecture/SwiftUI/SwitchStore.swift

@@ -47,10 +47,9 @@ import SwiftUI
 /// }
 /// ```
 ///
-/// - See also: ``Reducer/pullback(state:action:environment:breakpointOnNil:_:_:)``, a method that
-/// aids in transforming reducers that operate on each case of an enum into reducers that operate
-/// on the entire enum.
-///
+/// - See also: ``Reducer/pullback(state:action:environment:breakpointOnNil:file:line:)``, a method
+///   that aids in transforming reducers that operate on each case of an enum into reducers that
+///   operate on the entire enum.
 public struct SwitchStore<State, Action, Content>: View where Content: View {
   public let store: Store<State, Action>
   public let content: () -> Content