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1540 | ------------------------------------------------------------------------------
-- --
-- GNAT METRICS TOOLS COMPONENTS --
-- --
-- M E T R I C S . C O U P L I N G --
-- --
-- B o d y --
-- --
-- Copyright (C) 2008-2016, AdaCore --
-- --
-- GNATMETRIC is free software; you can redistribute it and/or modify it --
-- under terms of the GNU General Public License as published by the Free --
-- Software Foundation; either version 3, or (at your option) any later --
-- version. GNATMETRIC is distributed in the hope that it will be useful, --
-- but WITHOUT ANY WARRANTY; without even the implied warranty of --
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General --
-- Public License for more details. You should have received a copy of the --
-- GNU General Public License distributed with GNAT; see file COPYING3. If --
-- not, go to http://www.gnu.org/licenses for a complete copy of the --
-- license. --
-- --
-- GNAT Metrics Toolset is maintained by AdaCore (http://www.adacore.com). --
-- --
------------------------------------------------------------------------------
pragma Ada_2012;
with Ada.Characters.Handling; use Ada.Characters.Handling;
with Ada.Containers.Generic_Constrained_Array_Sort;
with Ada.Containers.Ordered_Sets;
with Ada.Containers.Vectors;
with GNAT.HTable;
with GNAT.OS_Lib; use GNAT.OS_Lib;
with Asis.Compilation_Units; use Asis.Compilation_Units;
with Asis.Compilation_Units.Relations; use Asis.Compilation_Units.Relations;
with Asis.Declarations; use Asis.Declarations;
with Asis.Elements; use Asis.Elements;
with Asis.Extensions; use Asis.Extensions;
with Asis.Extensions.Flat_Kinds; use Asis.Extensions.Flat_Kinds;
with Asis.Extensions.Strings; use Asis.Extensions.Strings;
with Asis.Iterator; use Asis.Iterator;
with Asis.Limited_Views; use Asis.Limited_Views;
with Asis.Text; use Asis.Text;
with ASIS_UL.Common; use ASIS_UL.Common;
with ASIS_UL.Metrics.Definitions; use ASIS_UL.Metrics.Definitions;
with ASIS_UL.Misc; use ASIS_UL.Misc;
with ASIS_UL.Output; use ASIS_UL.Output;
with ASIS_UL.Source_Table; use ASIS_UL.Source_Table;
with METRICS.Options; use METRICS.Options;
with METRICS.Output; use METRICS.Output;
package body METRICS.Coupling is
-----------------------------------------------
-- Data structures for coupling dependencies --
-----------------------------------------------
type Unit_Id is new Integer range 0 .. Integer'Last;
-- Index of a unit in the unit Table. We need IDs to organize dependency
-- lists.
No_Unit : constant Unit_Id := Unit_Id'First;
First_Unit : constant Unit_Id := No_Unit + 1;
function Present (CU_Id : Unit_Id) return Boolean;
function No (CU_Id : Unit_Id) return Boolean;
-- Check if CU_Id represents an existing entry in the unit table.
subtype Existing_Unit_Id is Unit_Id range First_Unit .. Unit_Id'Last;
package Dependency_Lists is new Ada.Containers.Ordered_Sets
(Element_Type => Unit_Id);
-- Lists to represent unit dependencies.
type Unit_Record is record
SF : SF_Id;
Unit_Name : String_Loc;
Unit_Span : Span;
Processed_Limited_View_Only : Boolean;
Contains_Tagged_Types : Boolean;
Defines_Subprograms : Boolean;
Descendants : Dependency_Lists.Set;
OO_Dependents : Dependency_Lists.Set;
OO_Supporters : Dependency_Lists.Set;
Subprogram_Dependents : Dependency_Lists.Set;
Subprogram_Supporters : Dependency_Lists.Set;
Dependents : Dependency_Lists.Set;
Supporters : Dependency_Lists.Set;
Hash_Link : Unit_Id;
end record;
package Unit_Containers is new Ada.Containers.Vectors
(Index_Type => Existing_Unit_Id,
Element_Type => Unit_Record);
Unit_Table : Unit_Containers.Vector;
----------------
-- Hash table --
----------------
Hash_Num : constant Integer := 2**8;
-- Number of headers in the hash table. There is no special reason in this
-- choice.
Hash_Max : constant Integer := Hash_Num - 1;
-- Indexes in the hash header table run from 0 to Hash_Num - 1
subtype Hash_Index_Type is Integer range 0 .. Hash_Max;
-- Range of hash index values
Hash_Table : array (Hash_Index_Type) of Unit_Id := (others => No_Unit);
-- The hash table is used to locate existing entries in the unit table.
-- The entries point to the first nodes table entry whose hash value
-- matches the hash code. Then subsequent nodes table entries with the
-- same hash code value are linked through the Hash_Link fields.
function Hash is new GNAT.HTable.Hash (Header_Num => Hash_Index_Type);
function Hash (CU : Asis.Compilation_Unit) return Hash_Index_Type;
procedure Print_Unit (U : Unit_Id);
-- Prints out the debug info of the unit.
procedure Print_List (List : Dependency_Lists.Set);
-- Prints the debug image of the argument node list
-----------------------------------------------
-- Access and update routines for unit table --
-----------------------------------------------
type Unit_Record_Access is access Unit_Record;
function Table (CU_Id : Unit_Id) return Unit_Record_Access;
-- Mimics the notation Instantce_Name.Table (N) in the instantiation of the
-- GNAT Table package. Returns the (pointer to the) unit with the index
-- CU_Id from Unit_Table (see the body of the package). Raises
-- Constraint_Error if a node with this index does not exists.
function Unit_SF (CU_Id : Unit_Id) return SF_Id;
-- Returns source file table entry for the argument unit. Returns No_SF_Id
-- in case if No (CU_Id).
function Unit_Name (CU_Id : Unit_Id) return String_Loc;
-- Returns string table entry for the argument unit. Returns Nil_String_Loc
-- in case if No (CU_Id).
function Unit_Hash_Link (CU_Id : Unit_Id) return Unit_Id;
-- Returns the hash link for the argument unit. Returns No_Unit in case
-- if No (CU_Id).
function Processed_Limited_View_Only (CU_Id : Unit_Id) return Boolean;
procedure Set_Processed_Limited_View_Only (CU_Id : Unit_Id; Val : Boolean);
procedure Set_Hash_Link (CU_Id : Unit_Id; Val : Unit_Id);
-- Sets the hash link of the unit CU_Id to Val. It is erroneous to call it
-- for No (CU_Id).
procedure Add_Descendant (To : Unit_Id; Descendant : Unit_Id);
procedure Add_Dependent (To : Unit_Id; Dependent : Unit_Id);
procedure Add_Supporter (To : Unit_Id; Supporter : Unit_Id);
procedure Add_OO_Dependent (To : Unit_Id; Dependent : Unit_Id);
procedure Add_OO_Supporter (To : Unit_Id; Supporter : Unit_Id);
procedure Add_Subprogram_Dependent (To : Unit_Id; Dependent : Unit_Id);
procedure Add_Subprogram_Supporter (To : Unit_Id; Supporter : Unit_Id);
-- ????
function Find_CU (CU : Asis.Compilation_Unit) return Unit_Id;
-- Tries to locate in the unit table the entry corresponding to the
-- argument unit. Returns No_Unit if there is no such entry.
function Is_Equal
(CU_Id : Unit_Id;
CU : Asis.Compilation_Unit)
return Boolean;
-- Checks if CU_Id represents CU. CU_Id should not be No_Unit. This
-- function assumes that Has_OO_Coupling_Metrics (CU) is true.
-----------------------
-- Local subprograms --
-----------------------
function Contains_Subprogram
(CU : Asis.Compilation_Unit)
return Boolean;
-- Checks if the argument CU is of interest for subprogram metrics. A unit
-- is of interest if it satisfy to the following conditions:
--
-- * it is a package declaration or a package instantiation that contains
-- a subprogram declaration or subprogram instantiation
--
-- * it is a subprogram (body) declaration
--
-- * it is a subprogram instantiation
function Has_OO_Coupling_Metrics
(CU : Asis.Compilation_Unit)
return Boolean;
-- Checks if the argument CU is of interest for coupling metrics. A unit is
-- of interest if it satisfy to the following conditions:
--
-- * the corresponding library item is a package declaration, a generic
-- package declaration or a package instantiation;
--
-- * the library item contains a declaration of a tagged type or an
-- interface type (the corresponding expanded spec is considered in case
-- of a generic instantion).
--
-- or
--
-- * the library item is a package body or a subunit, and the for the
-- corresponding spec unit Has_Coupling_Metrics is True
--
-- What about things defined in nested generic packages???
procedure Check_For_OO_Type
(Element : Asis.Element;
Control : in out Traverse_Control;
State : in out Boolean);
-- Used as Pre_Operation. Checks if its argument is a declaration (or
-- a definition) of a tagged or interface type. If it is, sets State to
-- True and terminates the traversal. Assumes that the top element of the
-- traversal is a (generic) package declaration.
procedure Check_For_Subprogram
(Element : Asis.Element;
Control : in out Traverse_Control;
State : in out Boolean);
-- Used as Pre_Operation. Checks if its argument is a subprogram
-- declaration (or subprogram instantiation) or a package instantiation
-- that defines a subprogram. If it is, sets State to True and terminates
-- the traversal. Assumes that the top element of the traversal is a
-- package declaration.
procedure Do_Nothing
(Element : Asis.Element;
Control : in out Traverse_Control;
State : in out Boolean);
-- Used as a Post_Operation, does nothing.
procedure Look_For_OO_Type is new Traverse_Element
(State_Information => Boolean,
Pre_Operation => Check_For_OO_Type,
Post_Operation => Do_Nothing);
-- Checks if the argument Element contains a declaration of OO type.
procedure Look_For_Subprograms is new Traverse_Element
(State_Information => Boolean,
Pre_Operation => Check_For_Subprogram,
Post_Operation => Do_Nothing);
-- Checks if the argument Element contains a declaration of a subprogram.
function Collect_Coupling_Dependencies
(CU : Asis.Compilation_Unit;
From_Limited_View : Boolean := False)
return Unit_Id;
-- Does the same as the procedure Collect_Coupling_Dependencies and returns
-- the ID of the unit as the result.
function Corresponding_Unit
(CU : Asis.Compilation_Unit)
return Asis.Compilation_Unit;
-- If the argument unit is a body or a subunit, returns the corresponding
-- spec unit. Otherwise returns the argument Unit
Ident_String : constant String := " ";
-- Used in the debug output of the unit table
-----------------------
-- Check_For_OO_Type --
-----------------------
procedure Check_For_OO_Type
(Element : Asis.Element;
Control : in out Traverse_Control;
State : in out Boolean)
is
begin
case Flat_Element_Kind (Element) is
when An_Ordinary_Type_Declaration |
A_Private_Type_Declaration |
A_Package_Declaration |
A_Generic_Package_Declaration =>
-- We have to look into the construct
null;
when A_Tagged_Incomplete_Type_Declaration |
A_Private_Extension_Declaration |
A_Tagged_Record_Type_Definition |
A_Tagged_Private_Type_Definition |
A_Derived_Record_Extension_Definition |
An_Ordinary_Interface .. A_Synchronized_Interface =>
-- We've found OO type, so:
State := True;
Control := Terminate_Immediately;
when A_Package_Instantiation =>
Look_For_OO_Type
(Corresponding_Declaration (Element), Control, State);
when others =>
-- Definitely nothing interesting inside
Control := Abandon_Children;
end case;
end Check_For_OO_Type;
--------------------------
-- Check_For_Subprogram --
--------------------------
procedure Check_For_Subprogram
(Element : Asis.Element;
Control : in out Traverse_Control;
State : in out Boolean)
is
begin
case Flat_Element_Kind (Element) is
when A_Procedure_Declaration |
A_Function_Declaration |
A_Procedure_Instantiation |
A_Function_Instantiation =>
State := True;
Control := Terminate_Immediately;
when A_Package_Instantiation =>
Look_For_Subprograms
(Corresponding_Declaration (Element), Control, State);
when A_Package_Declaration =>
null;
when others =>
Control := Abandon_Children;
end case;
end Check_For_Subprogram;
-----------------------------------
-- Collect_Coupling_Dependencies --
-----------------------------------
function Collect_Coupling_Dependencies
(CU : Asis.Compilation_Unit;
From_Limited_View : Boolean := False)
return Unit_Id
is
Spec_CU : constant Asis.Compilation_Unit := Corresponding_Unit (CU);
Result : Unit_Id := Find_CU (Spec_CU);
New_Unit : Boolean := False;
Arg_Contains_Tagged_Types : Boolean := False;
Contains_Tagged_Types : Boolean := False;
Contains_Subprograms : Boolean := False;
Next_Parent : Asis.Compilation_Unit;
Next_Supporter : Unit_Id;
begin
-- First, check if we have to process this unit:
if not From_Limited_View
and then
Compute_Control_Coupling_Metric
then
Contains_Subprograms := Contains_Subprogram (Spec_CU);
end if;
if Compute_OO_Coupling_Metric then
Arg_Contains_Tagged_Types := Has_OO_Coupling_Metrics (Spec_CU);
end if;
if not (Compute_Unit_Coupling_Metric
or else
Compute_Control_Coupling_Metric
-- We process a unit even if it does not define subprograms -
-- it may depend on units with subprograms
or else
Arg_Contains_Tagged_Types)
then
return No_Unit;
end if;
if No (Result) then
-- We have to create the corresponding entry in the unit table:
declare
New_Unit : Unit_Record;
Hash_Value : constant Hash_Index_Type := Hash (Spec_CU);
Last_In_Chain : Unit_Id := Hash_Table (Hash_Value);
begin
New_Unit.SF :=
File_Find (Normalize_Pathname
(To_String (Text_Name (Spec_CU)),
Resolve_Links => False,
Case_Sensitive => True),
Case_Sensitive => False);
-- In non case-sensitive system we may have a problem trying to
-- find a source file in the source table. Text_Name gets the file
-- name from the tree, and in non case-sensitive systems the file
-- names are always converted to lower case, so we have to use
-- non case-sensitive search here.
if not Present (New_Unit.SF) then
-- Spec unit is not an argument of the gnatmetric call, we
-- cannot computre any coupling metric for it!
return No_Unit;
end if;
New_Unit.Processed_Limited_View_Only := From_Limited_View;
New_Unit.Unit_Span := Element_Span (Unit_Declaration (Spec_CU));
New_Unit.Unit_Name :=
Enter_String (To_String (Unit_Full_Name (Spec_CU)));
New_Unit.Hash_Link := No_Unit;
New_Unit.Contains_Tagged_Types := Arg_Contains_Tagged_Types;
New_Unit.Defines_Subprograms := Contains_Subprograms;
Unit_Containers.Append
(Container => Unit_Table,
New_Item => New_Unit);
Result := Unit_Containers.Last_Index (Unit_Table);
if No (Last_In_Chain) then
Hash_Table (Hash_Value) := Result;
else
while Present (Unit_Hash_Link (Last_In_Chain)) loop
Last_In_Chain := Unit_Hash_Link (Last_In_Chain);
end loop;
Set_Hash_Link
(CU_Id => Last_In_Chain,
Val => Result);
end if;
end;
New_Unit := True;
elsif not From_Limited_View and then
Processed_Limited_View_Only (Result)
then
-- Here we have to correct the unit information if all what we know
-- about the unit has been collected from its limited view
-- if Compute_Control_Coupling_Metric then
-- Table (Result).Defines_Subprograms := Contains_Subprograms;
-- end if;
Table (Result).Unit_Span := Element_Span (Unit_Declaration (Spec_CU));
-- New_Unit := True;
end if;
if New_Unit
or else
not Is_Equal (CU, Spec_CU)
or else
(not From_Limited_View
and then
Processed_Limited_View_Only (Result))
then
-- We have to create or to update the list of supporters and to
-- update the dependents lists for new supporters accordingly
declare
Supporters : constant Asis.Compilation_Unit_List :=
Semantic_Dependence_Order
(Compilation_Units => (1 => CU),
Dependent_Units => Nil_Compilation_Unit_List,
The_Context => The_Context,
Relation => Asis.Supporters).Consistent;
Next_Supporter : Unit_Id;
Next_Supporter_SF : SF_Id;
Has_Limited_View : Boolean;
begin
for J in Supporters'Range loop
Has_Limited_View := Has_Limited_View_Only (Supporters (J));
Next_Supporter := Find_CU (Supporters (J));
if not Has_Limited_View
and then
Compute_Control_Coupling_Metric
then
Contains_Subprograms := Contains_Subprogram (Supporters (J));
end if;
if (not Has_Limited_View
or else
Unit_Kind (Supporters (J)) = A_Package)
and then
Compute_OO_Coupling_Metric
then
Contains_Tagged_Types :=
Has_OO_Coupling_Metrics (Supporters (J));
end if;
if No (Next_Supporter) then
-- May be this is a unit of interest that has not been
-- processed yet.
if Compute_Unit_Coupling_Metric
or else
(Compute_Control_Coupling_Metric
and then
Contains_Subprograms)
or else
(Compute_OO_Coupling_Metric
and then
Contains_Tagged_Types)
then
Next_Supporter_SF :=
File_Find (GNAT.OS_Lib.Normalize_Pathname
(To_String (Text_Name (Supporters (J))),
Resolve_Links => False,
Case_Sensitive => True));
else
Next_Supporter_SF := No_SF_Id;
end if;
-- The only need for computing Next_Supporter_SF is to
-- ensure that coupling metrics are computed only for/from
-- the units that are arguments of gnatmetric call.
if Present (Next_Supporter_SF) then
Next_Supporter :=
Collect_Coupling_Dependencies
(Supporters (J), Has_Limited_View);
end if;
end if;
if Present (Next_Supporter)
and then
Next_Supporter /= Result
then
-- If we are here, then Next_Supporter is definitely of
-- interest for the coupling metrics specified
if not Has_Limited_View
and then
Compute_Control_Coupling_Metric
and then
Contains_Subprograms
then
Add_Subprogram_Dependent
(To => Next_Supporter, Dependent => Result);
Add_Subprogram_Supporter
(To => Result, Supporter => Next_Supporter);
end if;
if Compute_OO_Coupling_Metric
and then
Arg_Contains_Tagged_Types
and then
Contains_Tagged_Types
then
Add_OO_Dependent
(To => Next_Supporter, Dependent => Result);
Add_OO_Supporter
(To => Result, Supporter => Next_Supporter);
end if;
if Compute_Unit_Coupling_Metric then
Add_Dependent (To => Next_Supporter, Dependent => Result);
Add_Supporter (To => Result, Supporter => Next_Supporter);
end if;
end if;
end loop;
end;
end if;
if New_Unit and then Compute_OO_Coupling_Metric then
-- we have to update descendants relations
Next_Parent := Corresponding_Parent_Declaration (Spec_CU);
if not Is_Nil (Next_Parent) then
while not Is_Nil
(Corresponding_Parent_Declaration (Next_Parent))
loop
-- Loop stops when Next_Parent is package Standard
Next_Supporter := Find_CU (Next_Parent);
if Present (Next_Supporter) then
Add_Descendant
(To => Next_Supporter, Descendant => Result);
end if;
Next_Parent :=
Corresponding_Parent_Declaration (Next_Parent);
end loop;
end if;
end if;
if Processed_Limited_View_Only (Result)
and then
not From_Limited_View
then
Set_Processed_Limited_View_Only (Result, False);
end if;
return Result;
end Collect_Coupling_Dependencies;
procedure Collect_Coupling_Dependencies (CU : Asis.Compilation_Unit) is
Result : Unit_Id := Collect_Coupling_Dependencies (CU);
pragma Unreferenced (Result);
begin
null;
end Collect_Coupling_Dependencies;
-------------------------
-- Contains_Subprogram --
-------------------------
function Contains_Subprogram
(CU : Asis.Compilation_Unit)
return Boolean
is
U : Asis.Element;
Control : Traverse_Control := Continue;
Result : Boolean := False;
begin
case Unit_Kind (CU) is
when A_Procedure |
A_Function |
A_Procedure_Instance |
A_Function_Instance |
A_Procedure_Body |
A_Function_Body =>
return True;
when A_Package |
A_Package_Instance =>
-- More detailed analysis is needed
null;
when others =>
return False;
end case;
U := Corresponding_Declaration (Unit_Declaration (CU));
Look_For_Subprograms (U, Control, Result);
return Result;
end Contains_Subprogram;
------------------------------
-- Compute_Coupling_Metrics --
------------------------------
procedure Compute_Coupling_Metrics is
begin
-- Do we really have anything to compute?
null;
end Compute_Coupling_Metrics;
------------------------
-- Corresponding_Unit --
------------------------
function Corresponding_Unit
(CU : Asis.Compilation_Unit)
return Asis.Compilation_Unit
is
Result : Asis.Compilation_Unit := CU;
begin
case Unit_Kind (CU) is
when A_Package_Body =>
Result := Corresponding_Declaration (CU);
when A_Subunit =>
Result :=
Corresponding_Unit (Corresponding_Subunit_Parent_Body (Result));
when A_Procedure_Body |
A_Function_Body =>
if not Acts_As_Spec (Unit_Declaration (CU)) then
Result := Corresponding_Declaration (CU);
end if;
when others =>
null;
end case;
return Result;
end Corresponding_Unit;
----------------
-- Do_Nothing --
----------------
procedure Do_Nothing
(Element : Asis.Element;
Control : in out Traverse_Control;
State : in out Boolean)
is
begin
null;
end Do_Nothing;
-------------
-- Find_CU --
-------------
function Find_CU (CU : Asis.Compilation_Unit) return Unit_Id is
Result : Unit_Id;
begin
Result := Hash_Table (Hash (CU));
while Present (Result) loop
if Is_Equal (Result, CU) then
exit;
end if;
Result := Table (Result).Hash_Link;
end loop;
return Result;
end Find_CU;
--------------------------
-- Has_OO_Coupling_Metrics --
--------------------------
function Has_OO_Coupling_Metrics
(CU : Asis.Compilation_Unit)
return Boolean
is
Arg_Unit : constant Asis.Compilation_Unit := Corresponding_Unit (CU);
Unit : Asis.Element;
Result : Boolean := False;
Control : Traverse_Control := Continue;
begin
if not Has_Limited_View_Only (Arg_Unit)
or else
Unit_Kind (Arg_Unit) = A_Package
then
case Unit_Kind (Arg_Unit) is
when A_Package |
A_Generic_Package |
A_Package_Instance =>
Unit := Unit_Declaration (Arg_Unit);
if Unit_Kind (Arg_Unit) = A_Package_Instance then
Unit := Corresponding_Declaration (Unit);
end if;
Look_For_OO_Type (Unit, Control, Result);
when others =>
null;
end case;
end if;
return Result;
end Has_OO_Coupling_Metrics;
----------
-- Hash --
----------
function Hash (CU : Asis.Compilation_Unit) return Hash_Index_Type is
begin
return Hash (To_String (Unit_Full_Name (CU)));
end Hash;
--------------
-- Is_Equal --
--------------
function Is_Equal
(CU_Id : Unit_Id;
CU : Asis.Compilation_Unit)
return Boolean
is
Result : Boolean := False;
begin
if Present (CU_Id)
and then
not Is_Nil (CU)
then
Result :=
Get_String (Unit_Name (CU_Id)) = To_String (Unit_Full_Name (CU));
end if;
return Result;
end Is_Equal;
--------
-- No --
--------
function No (CU_Id : Unit_Id) return Boolean is
begin
return CU_Id not in
First_Unit .. Unit_Containers.Last_Index (Unit_Table);
end No;
-------------
-- Present --
-------------
function Present (CU_Id : Unit_Id) return Boolean is
begin
return CU_Id in First_Unit .. Unit_Containers.Last_Index (Unit_Table);
end Present;
----------------
-- Print_List --
----------------
procedure Print_List (List : Dependency_Lists.Set) is
use Dependency_Lists;
Next_El : Cursor := First (List);
begin
if Next_El = No_Element then
Info_No_EOL (" ...nothing...");
else
while Next_El /= No_Element loop
Info_No_EOL (Dependency_Lists.Element (Next_El)'Img);
Next_El := Next (Next_El);
end loop;
Info_No_EOL (" (" & Length (List)'Img & ")");
end if;
Info ("");
end Print_List;
----------------
-- Print_Unit --
----------------
procedure Print_Unit (U : Unit_Id) is
begin
Info ("Unit_Id =" & U'Img);
Info_No_EOL (Ident_String);
Info ("Source file - " & Source_Name (Unit_SF (U)));
Info_No_EOL (Ident_String);
Info ("Unit name - " & Get_String (Unit_Name (U)));
if Table (U).Contains_Tagged_Types then
Info (" defines tagged type");
end if;
if Table (U).Defines_Subprograms then
Info (" defines subprogram");
end if;
if Table (U).Processed_Limited_View_Only then
Info (" ONLY LIMITED VIEW PROCESSED!");
end if;
Info_No_EOL (Ident_String);
Info ("Hash link - " & Unit_Hash_Link (U)'Img);
Info_No_EOL (Ident_String & "Descendants :");
Print_List (Table (U).Descendants);
Info_No_EOL (Ident_String & "OO_Supporters :");
Print_List (Table (U).OO_Supporters);
Info_No_EOL (Ident_String & "OO_Dependents :");
Print_List (Table (U).OO_Dependents);
Info_No_EOL (Ident_String & "Subprogram_Supporters :");
Print_List (Table (U).Subprogram_Supporters);
Info_No_EOL (Ident_String & "Subprogram_Dependents :");
Print_List (Table (U).Subprogram_Dependents);
Info_No_EOL (Ident_String & "Supporters :");
Print_List (Table (U).Supporters);
Info_No_EOL (Ident_String & "Dependents :");
Print_List (Table (U).Dependents);
end Print_Unit;
----------------------
-- Print_Unit_Table --
----------------------
procedure Print_Unit_Table is
begin
for J in First_Unit .. Unit_Containers.Last_Index (Unit_Table) loop
Print_Unit (J);
Info ("");
end loop;
end Print_Unit_Table;
---------------------------------
-- Processed_Limited_View_Only --
---------------------------------
function Processed_Limited_View_Only (CU_Id : Unit_Id) return Boolean is
begin
if No (CU_Id) then
return False;
else
return Table (CU_Id).Processed_Limited_View_Only;
end if;
end Processed_Limited_View_Only;
-----------------------------
-- Report_Coupling_Metrics --
-----------------------------
procedure Report_Coupling_Metrics
(Text : Boolean;
XML : Boolean)
is
Crown : Dependency_Lists.Set;
-- Contains terminal (leaf) units belonging to the category
Category_Supporters : Dependency_Lists.Set;
Category_Dependents : Dependency_Lists.Set;
-- External dependencies of the category (a unit from Category set
-- cannot belong to any of these lists.
use Dependency_Lists;
Next_El : Cursor;
-- Wrapper routines for report routines - they generate the output only\
-- if the corresponding flag is ON
procedure Report_XML
(Message : String;
Depth : Natural := 0);
procedure Report
(Message : String;
Depth : Natural := 0);
procedure Output_XML_Metric
(Metric : String;
Value : Metric_Count;
Depth : Natural := 0);
procedure Report_XML
(Message : String;
Depth : Natural := 0)
is
begin
if XML then
METRICS.Output.Report_XML (Message, Depth);
end if;
end Report_XML;
procedure Report
(Message : String;
Depth : Natural := 0)
is
begin
if Text then
METRICS.Output.Report (Message, Depth);
end if;
end Report;
procedure Output_XML_Metric
(Metric : String;
Value : Metric_Count;
Depth : Natural := 0)
is
begin
if XML then
METRICS.Output.Output_XML_Metric (Metric, Value, Depth);
end if;
end Output_XML_Metric;
subtype Actual_Unit_Id is Existing_Unit_Id
range First_Unit .. Unit_Containers.Last_Index (Unit_Table);
type Unit_Id_Array is array (Actual_Unit_Id) of Actual_Unit_Id;
Sorted_Unit_Ids : Unit_Id_Array;
-- Sequence of the Unit_Ids in alphabetical order by name
function Lt (X, Y : Actual_Unit_Id) return Boolean;
pragma Inline (Lt);
procedure Sort is new Ada.Containers.Generic_Constrained_Array_Sort
(Actual_Unit_Id, Actual_Unit_Id, Unit_Id_Array, "<" => Lt);
function Lt (X, Y : Actual_Unit_Id) return Boolean is
U1 : constant String := Get_String (Unit_Name (X));
U2 : constant String := Get_String (Unit_Name (Y));
begin
return U1 < U2;
end Lt;
-- Start of processing for Report_Coupling_Metrics
begin
for J in Actual_Unit_Id loop
Sorted_Unit_Ids (J) := J;
end loop;
Sort (Sorted_Unit_Ids);
Report ("");
Report ("Coupling metrics:");
Report ("=================");
Report_XML ("<coupling>",
Depth => 1);
for J of Sorted_Unit_Ids loop
-- At the moment we use a rather straightforward, but not very
-- effective way of computing the category coupling.
--
-- For fan-in coupling we collect all the units depending on
-- a root unit and all its descendants, and then subtracts from
-- the result the category itself (that is, the given unit
-- plus all its descendants).
--
-- For fan-out coupling, we get a set of all the terminal
-- units of the category. Because a descendant unit belongs on
-- all the units all its ancestor units depends upon, we
-- collect the dependencies of the terminal units only and then
-- subtracts from the result the category itself.
--
-- The disadvantage of this approach is that the same things
-- are computed many times...
if Compute_Category_Efferent_Coupling then
-- First, create the set of terminal nodes.
Clear (Crown);
Clear (Category_Supporters);
if Is_Empty (Table (J).Descendants) then
Insert (Crown, J);
else
Next_El := First (Table (J).Descendants);
while Next_El /= No_Element loop
if Is_Empty
(Table (Dependency_Lists.Element (Next_El)).Descendants)
then
Insert (Crown, Dependency_Lists.Element (Next_El));
end if;
Next_El := Next (Next_El);
end loop;
end if;
Next_El := First (Crown);
while Next_El /= No_Element loop
Union
(Category_Supporters,
Table (Dependency_Lists.Element (Next_El)).OO_Supporters);
Next_El := Next (Next_El);
end loop;
Difference (Category_Supporters, Table (J).Descendants);
Exclude (Category_Supporters, J);
end if;
if Compute_Category_Afferent_Coupling then
Clear (Category_Dependents);
Union (Category_Dependents, Table (J).OO_Dependents);
Next_El := First (Table (J).Descendants);
while Next_El /= No_Element loop
Union
(Category_Dependents,
Table (Dependency_Lists.Element (Next_El)).OO_Dependents);
Next_El := Next (Next_El);
end loop;
Difference (Category_Dependents, Table (J).Descendants);
Exclude (Category_Dependents, J);
end if;
Report ("Unit " & Get_String (Unit_Name (J)) &
" (" & Source_Name_For_Output (Unit_SF (J)) & ")",
Depth => 1);
Report_XML
("<file name=" & '"' &
Source_Name_For_Output (Unit_SF (J)) & """>",
Depth => 2);
Report_XML
("<unit name=""" & Get_String (Unit_Name (J)) &
""" line=""" & Image (Table (J).Unit_Span.First_Line) &
""" col=""" & Image (Table (J).Unit_Span.First_Column) &
""">",
Depth => 3);
if Compute_OO_Package_Efferent_Coupling
and then
Table (J).Contains_Tagged_Types
then
Report ("tagged fan-out coupling :" &
Length (Table (J).OO_Supporters)'Img,
Depth => 2);
Output_XML_Metric
("tagged_fan-out_coupling",
Metric_Count (Length (Table (J).OO_Supporters)),
Depth => 4);
end if;
if Compute_Category_Efferent_Coupling
and then
Table (J).Contains_Tagged_Types
then
Report ("hierarchy fan-out coupling:" &
Length (Category_Supporters)'Img,
Depth => 2);
Output_XML_Metric
("hierarchy_fan-out_coupling",
Metric_Count (Dependency_Lists.Length (Category_Supporters)),
Depth => 4);
end if;
if Compute_OO_Package_Afferent_Coupling
and then
Table (J).Contains_Tagged_Types
then
Report ("tagged fan-in coupling :" &
Length (Table (J).OO_Dependents)'Img,
Depth => 2);
Output_XML_Metric
("tagged_fan-in_coupling",
Metric_Count (Length (Table (J).OO_Dependents)),
Depth => 4);
end if;
if Compute_Category_Afferent_Coupling
and then
Table (J).Contains_Tagged_Types
then
Report ("hierarchy fan-in coupling :" &
Length (Category_Dependents)'Img,
Depth => 2);
Output_XML_Metric
("hierarchy_fan-in_coupling",
Metric_Count (Length (Category_Dependents)),
Depth => 4);
end if;
if Compute_Control_Efferent_Coupling then
Report ("control fan-out coupling :" &
Length (Table (J).Subprogram_Supporters)'Img,
Depth => 2);
Output_XML_Metric
("control_fan-out_coupling",
Metric_Count (Length (Table (J).Subprogram_Supporters)),
Depth => 4);
end if;
if Compute_Control_Afferent_Coupling
and then
Table (J).Defines_Subprograms
then
Report ("control fan-in coupling :" &
Length (Table (J).Subprogram_Dependents)'Img,
Depth => 2);
Output_XML_Metric
("control_fan-in_coupling",
Metric_Count (Length (Table (J).Subprogram_Dependents)),
Depth => 4);
end if;
if Compute_Unit_Efferent_Coupling then
Report ("unit fan-out coupling :" &
Length (Table (J).Supporters)'Img,
Depth => 2);
Output_XML_Metric
("unit_fan-out_coupling",
Metric_Count (Length (Table (J).Supporters)),
Depth => 4);
end if;
if Compute_Unit_Afferent_Coupling then
Report ("unit fan-in coupling :" &
Length (Table (J).Dependents)'Img,
Depth => 2);
Output_XML_Metric
("unit_fan-in_coupling",
Metric_Count (Length (Table (J).Dependents)),
Depth => 4);
end if;
Report ("");
Report_XML
("</unit>",
Depth => 3);
Report_XML
("</file>",
Depth => 2);
end loop;
Report_XML ("</coupling>",
Depth => 1);
end Report_Coupling_Metrics;
-----------
-- Table --
-----------
function Table (CU_Id : Unit_Id) return Unit_Record_Access is
Result : Unit_Record_Access;
procedure Process (E : in out Unit_Record);
procedure Process (E : in out Unit_Record) is
begin
Result := E'Unrestricted_Access;
end Process;
begin
Unit_Containers.Update_Element
(Container => Unit_Table,
Index => CU_Id,
Process => Process'Access);
return Result;
end Table;
--------------------
-- Unit_Hash_Link --
--------------------
function Unit_Hash_Link (CU_Id : Unit_Id) return Unit_Id is
begin
if No (CU_Id) then
return No_Unit;
else
return Table (CU_Id).Hash_Link;
end if;
end Unit_Hash_Link;
---------------
-- Unit_Name --
---------------
function Unit_Name (CU_Id : Unit_Id) return String_Loc is
begin
if No (CU_Id) then
return Nil_String_Loc;
else
return Table (CU_Id).Unit_Name;
end if;
end Unit_Name;
-------------
-- Unit_SF --
-------------
function Unit_SF (CU_Id : Unit_Id) return SF_Id is
begin
if No (CU_Id) then
return No_SF_Id;
else
return Table (CU_Id).SF;
end if;
end Unit_SF;
--------------------------------
-- Unit table update routines --
--------------------------------
Bool_Tmp : Boolean;
Unit_Id_Tmp : Unit_Id;
procedure Add_Descendant (For_Unit_Rec : in out Unit_Record);
procedure Add_OO_Dependent (For_Unit_Rec : in out Unit_Record);
procedure Add_OO_Supporter (For_Unit_Rec : in out Unit_Record);
procedure Add_Subprogram_Dependent (For_Unit_Rec : in out Unit_Record);
procedure Add_Subprogram_Supporter (For_Unit_Rec : in out Unit_Record);
procedure Add_Dependent (For_Unit_Rec : in out Unit_Record);
procedure Add_Supporter (For_Unit_Rec : in out Unit_Record);
procedure Set_Hash_Link (For_Unit_Rec : in out Unit_Record);
procedure Set_Processed_Limited_View_Only
(For_Unit_Rec : in out Unit_Record);
----------------------------------------------------------
procedure Add_Descendant (For_Unit_Rec : in out Unit_Record) is
Tmp_Cursor : Dependency_Lists.Cursor;
Tmp_Boolean : Boolean;
pragma Warnings (Off, Tmp_Cursor);
pragma Warnings (Off, Tmp_Boolean);
begin
Dependency_Lists.Insert
(Container => For_Unit_Rec.Descendants,
New_Item => Unit_Id_Tmp,
Position => Tmp_Cursor,
Inserted => Tmp_Boolean);
end Add_Descendant;
procedure Add_Dependent (For_Unit_Rec : in out Unit_Record) is
Tmp_Cursor : Dependency_Lists.Cursor;
Tmp_Boolean : Boolean;
pragma Warnings (Off, Tmp_Cursor);
pragma Warnings (Off, Tmp_Boolean);
begin
Dependency_Lists.Insert
(Container => For_Unit_Rec.Dependents,
New_Item => Unit_Id_Tmp,
Position => Tmp_Cursor,
Inserted => Tmp_Boolean);
end Add_Dependent;
procedure Add_Supporter (For_Unit_Rec : in out Unit_Record) is
Tmp_Cursor : Dependency_Lists.Cursor;
Tmp_Boolean : Boolean;
pragma Warnings (Off, Tmp_Cursor);
pragma Warnings (Off, Tmp_Boolean);
begin
Dependency_Lists.Insert
(Container => For_Unit_Rec.Supporters,
New_Item => Unit_Id_Tmp,
Position => Tmp_Cursor,
Inserted => Tmp_Boolean);
end Add_Supporter;
procedure Add_OO_Dependent (For_Unit_Rec : in out Unit_Record) is
Tmp_Cursor : Dependency_Lists.Cursor;
Tmp_Boolean : Boolean;
pragma Warnings (Off, Tmp_Cursor);
pragma Warnings (Off, Tmp_Boolean);
begin
Dependency_Lists.Insert
(Container => For_Unit_Rec.OO_Dependents,
New_Item => Unit_Id_Tmp,
Position => Tmp_Cursor,
Inserted => Tmp_Boolean);
end Add_OO_Dependent;
procedure Add_OO_Supporter (For_Unit_Rec : in out Unit_Record) is
Tmp_Cursor : Dependency_Lists.Cursor;
Tmp_Boolean : Boolean;
pragma Warnings (Off, Tmp_Cursor);
pragma Warnings (Off, Tmp_Boolean);
begin
Dependency_Lists.Insert
(Container => For_Unit_Rec.OO_Supporters,
New_Item => Unit_Id_Tmp,
Position => Tmp_Cursor,
Inserted => Tmp_Boolean);
end Add_OO_Supporter;
procedure Add_Subprogram_Dependent (For_Unit_Rec : in out Unit_Record) is
Tmp_Cursor : Dependency_Lists.Cursor;
Tmp_Boolean : Boolean;
pragma Warnings (Off, Tmp_Cursor);
pragma Warnings (Off, Tmp_Boolean);
begin
Dependency_Lists.Insert
(Container => For_Unit_Rec.Subprogram_Dependents,
New_Item => Unit_Id_Tmp,
Position => Tmp_Cursor,
Inserted => Tmp_Boolean);
end Add_Subprogram_Dependent;
procedure Add_Subprogram_Supporter (For_Unit_Rec : in out Unit_Record) is
Tmp_Cursor : Dependency_Lists.Cursor;
Tmp_Boolean : Boolean;
pragma Warnings (Off, Tmp_Cursor);
pragma Warnings (Off, Tmp_Boolean);
begin
Dependency_Lists.Insert
(Container => For_Unit_Rec.Subprogram_Supporters,
New_Item => Unit_Id_Tmp,
Position => Tmp_Cursor,
Inserted => Tmp_Boolean);
end Add_Subprogram_Supporter;
procedure Set_Hash_Link (For_Unit_Rec : in out Unit_Record) is
begin
For_Unit_Rec.Hash_Link := Unit_Id_Tmp;
end Set_Hash_Link;
procedure Set_Processed_Limited_View_Only
(For_Unit_Rec : in out Unit_Record)
is
begin
For_Unit_Rec.Processed_Limited_View_Only := Bool_Tmp;
end Set_Processed_Limited_View_Only;
----------------------------------------------------------
procedure Add_Descendant (To : Unit_Id; Descendant : Unit_Id) is
begin
Unit_Id_Tmp := Descendant;
Unit_Containers.Update_Element
(Container => Unit_Table,
Index => To,
Process => Add_Descendant'Access);
end Add_Descendant;
procedure Add_Dependent (To : Unit_Id; Dependent : Unit_Id) is
begin
Unit_Id_Tmp := Dependent;
Unit_Containers.Update_Element
(Container => Unit_Table,
Index => To,
Process => Add_Dependent'Access);
end Add_Dependent;
procedure Add_Supporter (To : Unit_Id; Supporter : Unit_Id) is
begin
Unit_Id_Tmp := Supporter;
Unit_Containers.Update_Element
(Container => Unit_Table,
Index => To,
Process => Add_Supporter'Access);
end Add_Supporter;
procedure Add_OO_Dependent (To : Unit_Id; Dependent : Unit_Id) is
begin
Unit_Id_Tmp := Dependent;
Unit_Containers.Update_Element
(Container => Unit_Table,
Index => To,
Process => Add_OO_Dependent'Access);
end Add_OO_Dependent;
procedure Add_OO_Supporter (To : Unit_Id; Supporter : Unit_Id) is
begin
Unit_Id_Tmp := Supporter;
Unit_Containers.Update_Element
(Container => Unit_Table,
Index => To,
Process => Add_OO_Supporter'Access);
end Add_OO_Supporter;
procedure Add_Subprogram_Dependent (To : Unit_Id; Dependent : Unit_Id) is
begin
Unit_Id_Tmp := Dependent;
Unit_Containers.Update_Element
(Container => Unit_Table,
Index => To,
Process => Add_Subprogram_Dependent'Access);
end Add_Subprogram_Dependent;
procedure Add_Subprogram_Supporter (To : Unit_Id; Supporter : Unit_Id) is
begin
Unit_Id_Tmp := Supporter;
Unit_Containers.Update_Element
(Container => Unit_Table,
Index => To,
Process => Add_Subprogram_Supporter'Access);
end Add_Subprogram_Supporter;
procedure Set_Hash_Link (CU_Id : Unit_Id; Val : Unit_Id) is
begin
Unit_Id_Tmp := Val;
Unit_Containers.Update_Element
(Container => Unit_Table,
Index => CU_Id,
Process => Set_Hash_Link'Access);
end Set_Hash_Link;
procedure Set_Processed_Limited_View_Only
(CU_Id : Unit_Id;
Val : Boolean)
is
begin
Bool_Tmp := Val;
Unit_Containers.Update_Element
(Container => Unit_Table,
Index => CU_Id,
Process => Set_Processed_Limited_View_Only'Access);
end Set_Processed_Limited_View_Only;
end METRICS.Coupling;
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