# See the License for the specific language governing permissions and
# limitations under the License.
+# The abstract concept of model and related common things
module model_base
-import poset
-import location
-private import more_collections
-
# The container class of a Nit object-oriented model.
# A model knows modules, classes and properties and can retrieve them.
class Model
- # All known modules
- var mmodules: Array[MModule] = new Array[MModule]
-
- # Module nesting hierarchy.
- # where mainmodule < mainmodule::nestedmodule
- var mmodule_nesting_hierarchy: POSet[MModule] = new POSet[MModule]
-
- # Full module importation hierarchy including private or nested links.
- var mmodule_importation_hierarchy: POSet[MModule] = new POSet[MModule]
-
- # Collections of modules grouped by their short names
- private var mmodules_by_name: MultiHashMap[String, MModule] = new MultiHashMap[String, MModule]
-
- # Return all module named `name'
- # If such a module does not exist, null is returned (instead of an empty array)
- #
- # Visibility or modules are not considered
- fun get_mmodules_by_name(name: String): nullable Array[MModule]
- do
- if mmodules_by_name.has_key(name) then
- return mmodules_by_name[name]
- else
- return null
- end
- end
end
-# A Nit module is usually associated with a Nit source file.
-# Modules can be nested (see `direct_owner', `public_owner', and `in_nesting')
-class MModule
- # The model considered
- var model: Model
-
- # The direct nesting module, return null if self is not nested (ie. is a top-level module)
- var direct_owner: nullable MModule
-
- # The short name of the module
- var name: String
-
- # The origin of the definition
- var location: Location
-
- # Alias for `name'
- redef fun to_s do return self.name
-
- # The view of the module in the module_nesting_hierarchy
- var in_nesting: POSetElement[MModule]
-
- # The view of the module in the module_importation_hierarchy
- var in_importation: POSetElement[MModule]
-
- # The canonical name of the module
- # Example: "owner::name"
- fun full_name: String
- do
- var owner = self.public_owner
- if owner == null then
- return self.name
- else
- return "{owner.full_name}::{self.name}"
- end
- end
-
- # Create a new empty module and register it to a model
- # `direct_owner' is the direct owner (null if top-level module)
- init(model: Model, direct_owner: nullable MModule, name: String, location: Location)
- do
- self.model = model
- self.name = name
- self.location = location
- model.mmodules_by_name.add_one(name, self)
- model.mmodules.add(self)
- self.in_nesting = model.mmodule_nesting_hierarchy.add_node(self)
- self.direct_owner = direct_owner
- if direct_owner != null then
- model.mmodule_nesting_hierarchy.add_edge(direct_owner, self)
- end
- self.in_importation = model.mmodule_importation_hierarchy.add_node(self)
- end
-
- # Register the imported modules (ie "import some_module")
- # This function can only invoked once by mmodule.
- # The visibility must be set with `se_visibility_for'.
- fun set_imported_mmodules(imported_mmodules: Array[MModule])
- do
- assert unique_invocation: self.in_importation.direct_greaters.is_empty
- for m in imported_mmodules do
- self.model.mmodule_importation_hierarchy.add_edge(self, m)
- end
- end
-
- private var intrude_mmodules: HashSet[MModule] = new HashSet[MModule]
- private var public_mmodules: HashSet[MModule] = new HashSet[MModule]
- private var private_mmodules: HashSet[MModule] = new HashSet[MModule]
-
- # Return the visibility level of an imported module `m`
- fun visibility_for(m: MModule): MVisibility
- do
- if m == self then return intrude_visibility
- if self.intrude_mmodules.has(m) then return intrude_visibility
- if self.public_mmodules.has(m) then return public_visibility
- if self.private_mmodules.has(m) then return private_visibility
- return none_visibility
- end
+# A named and possibly documented entity in the model.
+# This class is usefull to generalize presentation of entities to the human.
+abstract class MEntity
+ # The short (unqualified) name of this model entity
+ fun name: String is abstract
- # Set the visibility of an imported module
- # REQUIRE: the visibility of the modules imported by `m' are already set for `m'
- fun set_visibility_for(m: MModule, v: MVisibility)
- do
- if v == intrude_visibility then
- self.intrude_mmodules.add(m)
- self.intrude_mmodules.add_all(m.intrude_mmodules)
- self.public_mmodules.add_all(m.public_mmodules)
- self.private_mmodules.add_all(m.private_mmodules)
- else if v == public_visibility then
- self.public_mmodules.add(m)
- self.public_mmodules.add_all(m.intrude_mmodules)
- self.public_mmodules.add_all(m.public_mmodules)
- else if v == private_visibility then
- self.private_mmodules.add(m)
- self.private_mmodules.add_all(m.intrude_mmodules)
- self.private_mmodules.add_all(m.public_mmodules)
- else
- print "{self} visibility for {m} = {v}"
- abort # invalid visibility
- end
- end
-
- # The first module in the nesting hierarchy to export self as public
- # This function is used to determine the canonical name of modules, classes and properties.
- # REQUIRE: the visibility of all nesting modules is already set for `m'.
- fun public_owner: nullable MModule
- do
- var res = self.direct_owner
- var last = res
- while last != null do
- if last.visibility_for(self) >= public_visibility then res = last
- last = last.direct_owner
- end
- return res
- end
+ # A Model Entity has a direct link to its model
+ fun model: Model is abstract
+end
- # Return true if a class or a property introduced in `intro_mmodule' with a visibility of 'visibility' is visible in self.
- fun is_visible(intro_mmodule: MModule, visibility: MVisibility): Bool
- do
- var v = visibility_for(intro_mmodule)
- if v == intrude_visibility then
- return visibility >= private_visibility
- else if v == public_visibility then
- return visibility > private_visibility
- else if v == private_visibility then
- return visibility > private_visibility
- else if v == none_visibility then
- return false
- else
- abort
- end
- end
+# Something that represents a concern
+abstract class MConcern
+ super MEntity
+ # The concern that contains `self` or null if `self` is the root of the concern hierarchy
+ fun parent_concern: nullable MConcern is abstract
end
# A visibility (for modules, class and properties)
# Valid visibility are:
#
-# * intrude_visibility
-# * public_visibility
-# * protected_visibility
-# * none_visibility
+# * `intrude_visibility`
+# * `public_visibility`
+# * `protected_visibility`
+# * `none_visibility`
+# * `private_visiblity`
#
# Note this class is basically an enum.
# FIXME: use a real enum once user-defined enums are available
end
end
-fun intrude_visibility: MVisibility do return once new MVisibility("intrude", 4)
+fun intrude_visibility: MVisibility do return once new MVisibility("intrude", 5)
fun public_visibility: MVisibility do return once new MVisibility("public", 4)
fun protected_visibility: MVisibility do return once new MVisibility("protected", 3)
fun private_visibility: MVisibility do return once new MVisibility("private", 2)
-fun none_visibility: MVisibility do return once new MVisibility("none", 2)
+fun none_visibility: MVisibility do return once new MVisibility("none", 1)
nitlanguage / nit.git / blobdiff