module model::graph
import neo4j
+import more_collections
import location
# A Neo4j graph.
end
# A project’s graph.
+#
+# Here is the usual steps to build a project graph:
+#
+# <ul>
+# <li>Instantiate `ProjectGraph` by giving the name that will label the project.</li>
+# <li>For each compound:
+# <ul>
+# <li>Instantiate the compound.</li>
+# <li>Provide all the related data.</li>
+# <li>Call the `put_in_graph` method of the compound.</li>
+# </ul></li>
+# <li>Call the `add_global_modules` method of the project’s graph (defined in
+# the `module_compound` module). This permits to take global classes into
+# account correctly.</li>
+# <li>Call the `put_edges` method of the project’s graph.</li>
+# </ul>
class ProjectGraph
super NeoGraph
# Entities by `model_id`.
var by_id: Map[String, Entity] = new HashMap[String, Entity]
+ # Namespaces by `full_name`.
+ var namespaces: Map[String, Namespace] = new HashMap[String, Namespace]
+
+ # For each `ClassCompound` in the graph, the mapping between its `model_id` and its namespace.
+ #
+ # Defaults to the root namespace. An entry is added each time
+ # `Namespace.declare_class` is called.
+ #
+ # Note: In the graph, there is no direct link between a namespace and a
+ # class. It is the role of a module (created internally by a `FileCompound`)
+ # to link a class with its namespace. So, this collection is used by modules
+ # to know which class in a file belong to their related namespace. It is
+ # also used by `FileCompound` to detect classes in the root namespace.
+ var class_to_ns: Map[String, Namespace] is noinit
+
# Initialize a new project graph using the specified project name.
#
# The specified name will label all nodes of the project’s graph.
var root = new RootNamespace(self)
root.put_in_graph
by_id[""] = root
+ class_to_ns = new DefaultMap[String, Namespace](root)
end
# Request to all nodes in the graph to add their related edges.
+ #
+ # Note: For the rare cases where a node need to wait the `put_edges` to add
+ # an implicit node, this method makes sure to call the `put_edges` method
+ # of the newly added nodes only after processing all the nodes that was
+ # already there.
fun put_edges do
all_edges.clear
add_edge(project, "ROOT", by_id[""])
# Declare an inner class.
#
# Note: Althought Doxygen indicates that both arguments are optional,
- # declarations with either an empty name or an empty ID are not
- # supported yet.
+ # declarations with an empty ID are not supported yet.
#
# Parameters:
#
# * `id`: `model_id` of the inner class.
- # * `full_name`: qualified name of the inner class.
+ # * `full_name`: qualified name of the inner class. Ignored in practice.
+ #
+ # TODO: Handle cases where only the `full_name` is available.
fun declare_class(id: String, full_name: String) do end
# Declare a base compound (usually, a base class).
class Namespace
super Compound
- # Inner namespaces (IDs).
+ # The inner namespaces.
#
# Left empty for the root namespace.
- var inner_namespaces: SimpleCollection[String] = new Array[String]
+ var inner_namespaces: SimpleCollection[NamespaceRef] = new Array[NamespaceRef]
init do
super
self.labels.add("MGroup")
end
- redef fun declare_namespace(id: String, name: String) do
- inner_namespaces.add(id)
+ redef fun declare_namespace(id: String, full_name: String) do
+ inner_namespaces.add new NamespaceRef(id, full_name)
+ end
+
+ redef fun declare_class(id: String, full_name: String) do
+ graph.class_to_ns[id] = self
+ end
+
+ redef fun put_in_graph do
+ super
+ var full_name = self["full_name"]
+ if full_name isa String then graph.namespaces[full_name] = self
end
redef fun put_edges do
graph.add_edge(root, "NESTS", self)
end
for ns in inner_namespaces do
- var node = graph.by_id[ns]
+ var node = ns.seek_in(graph)
graph.add_edge(node, "PARENT", self)
graph.add_edge(self, "NESTS", node)
end
end
end
+# A reference to a namespace.
+class NamespaceRef
+ # The `model_id` of the target.
+ #
+ # Empty when unknown or for the root namespace.
+ var model_id: String
+
+ # The `full_name` of the target.
+ #
+ # Empty only for the root namespace.
+ var full_name: String
+
+ # Look for the targeted namespace in the specified graph.
+ fun seek_in(graph: ProjectGraph): Namespace do
+ var ns_compound: Namespace
+
+ if model_id.is_empty and not full_name.is_empty then
+ # ID unspecified. => We have to look by name
+ assert graph.namespaces.has_key(full_name) else
+ sys.stderr.write "Namespace `{full_name}` not found."
+ end
+ ns_compound = graph.namespaces[full_name]
+ else
+ ns_compound = graph.by_id[model_id].as(Namespace)
+ end
+ return ns_compound
+ end
+end
+
# The root namespace of a `ProjectGraph`.
#
# This the only entity in the graph whose `model_id` is really `""`.
nitlanguage / nit.git / blobdiff