Make item/layout collection dependencies finer-grained

lib/nanoc/base/entities/outdatedness_reasons.rb

@@ -46,15 +46,24 @@ def initialize(message, props = Nanoc::Int::Props.new)
       Props.new(raw_content: true, compiled_content: true),
     )
 
-    ItemCollectionExtended = Generic.new(
-      'A new item has been added to the site.',
-      Props.new(raw_content: true),
-    )
+    class DocumentCollectionExtended < Generic
+      attr_reader :objects
 
-    LayoutCollectionExtended = Generic.new(
-      'A new layout has been added to the site.',
-      Props.new(raw_content: true),
-    )
+      def initialize(objects)
+        super(
+          'New items/layouts have been added to the site.',
+          Props.new(raw_content: true),
+        )
+
+        @objects = objects
+      end
+    end
+
+    class ItemCollectionExtended < DocumentCollectionExtended
+    end
+
+    class LayoutCollectionExtended < DocumentCollectionExtended
+    end
 
     class AttributesModified < Generic
       attr_reader :attributes

lib/nanoc/base/entities/props.rb

@@ -6,11 +6,13 @@ class Props
     include Nanoc::Int::ContractsSupport
 
     attr_reader :attributes
+    attr_reader :raw_content
 
+    # TODO: Split raw_content for documents and collections
+    C_RAW_CONTENT = C::Or[C::IterOf[C::Or[String, Regexp]], C::Bool]
     C_ATTRS = C::Or[C::IterOf[Symbol], C::Bool]
-    contract C::KeywordArgs[raw_content: C::Optional[C::Bool], attributes: C::Optional[C_ATTRS], compiled_content: C::Optional[C::Bool], path: C::Optional[C::Bool]] => C::Any
+    contract C::KeywordArgs[raw_content: C::Optional[C_RAW_CONTENT], attributes: C::Optional[C_ATTRS], compiled_content: C::Optional[C::Bool], path: C::Optional[C::Bool]] => C::Any
     def initialize(raw_content: false, attributes: false, compiled_content: false, path: false)
-      @raw_content = raw_content
       @compiled_content = compiled_content
       @path = path
 
@@ -21,6 +23,14 @@ def initialize(raw_content: false, attributes: false, compiled_content: false, p
         else
           attributes
         end
+
+      @raw_content =
+        case raw_content
+        when Enumerable
+          Set.new(raw_content)
+        else
+          raw_content
+        end
     end
 
     contract C::None => String
@@ -37,7 +47,12 @@ def inspect
 
     contract C::None => C::Bool
     def raw_content?
-      @raw_content
+      case @raw_content
+      when Enumerable
+        @raw_content.any?
+      else
+        @raw_content
+      end
     end
 
     contract C::None => C::Bool
@@ -63,27 +78,35 @@ def path?
     contract Nanoc::Int::Props => Nanoc::Int::Props
     def merge(other)
       Props.new(
-        raw_content: raw_content? || other.raw_content?,
+        raw_content: merge_raw_content(other),
         attributes: merge_attributes(other),
         compiled_content: compiled_content? || other.compiled_content?,
         path: path? || other.path?,
       )
     end
 
+    def merge_raw_content(other)
+      merge_prop(raw_content, other.raw_content)
+    end
+
     def merge_attributes(other)
-      case attributes
+      merge_prop(attributes, other.attributes)
+    end
+
+    def merge_prop(own, other)
+      case own
       when true
         true
       when false
-        other.attributes
+        other
       else
-        case other.attributes
+        case other
         when true
           true
         when false
-          attributes
+          own
         else
-          attributes + other.attributes
+          own + other
         end
       end
     end
@@ -101,7 +124,7 @@ def active
     contract C::None => Hash
     def to_h
       {
-        raw_content: raw_content?,
+        raw_content: raw_content,
         attributes: attributes,
         compiled_content: compiled_content?,
         path: path?,

lib/nanoc/base/repos/dependency_store.rb

@@ -59,9 +59,12 @@ def layouts=(layouts)
       add_vertex_for(layouts)
     end
 
-    contract C::None => C::Bool
-    def any_new_objects?
-      @new_objects.any?
+    def new_items
+      @new_objects.select { |o| o.is_a?(Nanoc::Int::Item) }
+    end
+
+    def new_layouts
+      @new_objects.select { |o| o.is_a?(Nanoc::Int::Layout) }
     end
 
     # Returns the direct dependencies for the given object.
@@ -85,8 +88,10 @@ def objects_causing_outdatedness_of(object)
       refs2objs(@graph.direct_predecessors_of(obj2ref(object)))
     end
 
+    C_RAW_CONTENT = C::Or[C::IterOf[C::Or[String, Regexp]], C::Bool]
     C_ATTR = C::Or[C::IterOf[Symbol], C::Bool]
-    C_KEYWORD_PROPS = C::KeywordArgs[raw_content: C::Optional[C::Bool], attributes: C::Optional[C_ATTR], compiled_content: C::Optional[C::Bool], path: C::Optional[C::Bool]]
+    C_KEYWORD_PROPS = C::KeywordArgs[raw_content: C::Optional[C_RAW_CONTENT], attributes: C::Optional[C_ATTR], compiled_content: C::Optional[C::Bool], path: C::Optional[C::Bool]]
+
     contract C::Maybe[C_OBJ_SRC], C::Maybe[C_OBJ_DST], C_KEYWORD_PROPS => C::Any
     # Records a dependency from `src` to `dst` in the dependency graph. When
     # `dst` is oudated, `src` will also become outdated.

lib/nanoc/base/services/dependency_tracker.rb

@@ -6,8 +6,9 @@ class DependencyTracker
     include Nanoc::Int::ContractsSupport
 
     C_OBJ = C::Or[Nanoc::Int::Item, Nanoc::Int::Layout, Nanoc::Int::Configuration, Nanoc::Int::IdentifiableCollection]
+    C_RAW_CONTENT = C::Or[C::IterOf[C::Or[String, Regexp]], C::Bool]
     C_ATTR = C::Or[C::IterOf[Symbol], C::Bool]
-    C_ARGS = C::KeywordArgs[raw_content: C::Optional[C::Bool], attributes: C::Optional[C_ATTR], compiled_content: C::Optional[C::Bool], path: C::Optional[C::Bool]]
+    C_ARGS = C::KeywordArgs[raw_content: C::Optional[C_RAW_CONTENT], attributes: C::Optional[C_ATTR], compiled_content: C::Optional[C::Bool], path: C::Optional[C::Bool]]
 
     class Null
       include Nanoc::Int::ContractsSupport

lib/nanoc/base/services/outdatedness_checker.rb

@@ -191,19 +191,27 @@ def dependency_causes_outdatedness?(dependency)
       status = basic.outdatedness_status_for(dependency.from)
 
       active = status.props.active & dependency.props.active
-      if attributes_unaffected?(status, dependency)
-        active.delete(:attributes)
-      end
+      active.delete(:attributes) if attributes_unaffected?(status, dependency)
+      active.delete(:raw_content) if raw_content_unaffected?(status, dependency)
 
       active.any?
     end
 
     def attributes_unaffected?(status, dependency)
-      attr_reason = status.reasons.find do |r|
-        r.is_a?(Nanoc::Int::OutdatednessReasons::AttributesModified)
-      end
+      reason = status.reasons.find { |r| r.is_a?(Nanoc::Int::OutdatednessReasons::AttributesModified) }
+      reason && dependency.props.attributes.is_a?(Enumerable) && (dependency.props.attributes & reason.attributes).empty?
+    end
 
-      attr_reason && dependency.props.attributes.is_a?(Enumerable) && (dependency.props.attributes & attr_reason.attributes).empty?
+    def raw_content_unaffected?(status, dependency)
+      reason = status.reasons.find { |r| r.is_a?(Nanoc::Int::OutdatednessReasons::DocumentCollectionExtended) }
+      if reason.nil?
+        false
+      elsif !dependency.props.raw_content.is_a?(Enumerable)
+        false
+      else
+        patterns = dependency.props.raw_content.map { |r| Nanoc::Int::Pattern.from(r) }
+        patterns.none? { |pat| reason.objects.any? { |obj| pat.match?(obj.identifier) } }
+      end
     end
   end
 end

lib/nanoc/base/services/outdatedness_rules/item_collection_extended.rb

@@ -6,8 +6,10 @@ class ItemCollectionExtended < Nanoc::Int::OutdatednessRule
 
     contract Nanoc::Int::ItemCollection, C::Named['Nanoc::Int::OutdatednessChecker'] => C::Maybe[Nanoc::Int::OutdatednessReasons::Generic]
     def apply(_obj, outdatedness_checker)
-      if outdatedness_checker.dependency_store.any_new_objects?
-        Nanoc::Int::OutdatednessReasons::ItemCollectionExtended
+      new_items = outdatedness_checker.dependency_store.new_items
+
+      if new_items.any?
+        Nanoc::Int::OutdatednessReasons::ItemCollectionExtended.new(new_items)
       end
     end
   end

lib/nanoc/base/services/outdatedness_rules/layout_collection_extended.rb

@@ -6,8 +6,10 @@ class LayoutCollectionExtended < Nanoc::Int::OutdatednessRule
 
     contract Nanoc::Int::LayoutCollection, C::Named['Nanoc::Int::OutdatednessChecker'] => C::Maybe[Nanoc::Int::OutdatednessReasons::Generic]
     def apply(_obj, outdatedness_checker)
-      if outdatedness_checker.dependency_store.any_new_objects?
-        Nanoc::Int::OutdatednessReasons::LayoutCollectionExtended
+      new_layouts = outdatedness_checker.dependency_store.new_layouts
+
+      if new_layouts.any?
+        Nanoc::Int::OutdatednessReasons::LayoutCollectionExtended.new(new_layouts)
       end
     end
   end

lib/nanoc/base/views/identifiable_collection_view.rb

@@ -47,7 +47,17 @@ def size
     #
     # @return [Enumerable]
     def find_all(arg)
-      @context.dependency_tracker.bounce(unwrap, raw_content: true)
+      prop_attribute =
+        case arg
+        when String, Nanoc::Identifier
+          [arg.to_s]
+        when Regexp
+          [arg]
+        else
+          true
+        end
+
+      @context.dependency_tracker.bounce(unwrap, raw_content: prop_attribute)
       @objects.find_all(arg).map { |i| view_class.new(i, @context) }
     end
 
@@ -74,7 +84,17 @@ def find_all(arg)
     #
     #   @return [#identifier] if an object was found
     def [](arg)
-      @context.dependency_tracker.bounce(unwrap, raw_content: true)
+      prop_attribute =
+        case arg
+        when String, Nanoc::Identifier
+          [arg.to_s]
+        when Regexp
+          [arg]
+        else
+          true
+        end
+
+      @context.dependency_tracker.bounce(unwrap, raw_content: prop_attribute)
       res = @objects[arg]
       res && view_class.new(res, @context)
     end