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444 | with Ada.Assertions; use Ada.Assertions;
with Ada.Strings.Equal_Case_Insensitive;
with Ada.Text_IO; use Ada.Text_IO;
with Rejuvenation.Utils; use Rejuvenation.Utils;
package body Rejuvenation.Parameters is
function To_Param_Default_Array
(Children : Ada_Node_Array; Default_Expr : Expr)
return Param_Actual_Array with
Post => (To_Param_Default_Array'Result'First = Children'First)
and then (To_Param_Default_Array'Result'Last = Children'Last);
function To_Param_Default_Array
(Children : Ada_Node_Array; Default_Expr : Expr) return Param_Actual_Array
is
begin
return Result : Param_Actual_Array (Children'Range) do
for Index in Children'Range loop
declare
Def_Name : constant Defining_Name :=
Children (Index).As_Defining_Name;
begin
Result (Index) := Create_Param_Actual (Def_Name, Default_Expr);
end;
end loop;
end return;
end To_Param_Default_Array;
function To_Param_Default_Array
(P : Param_Spec) return Param_Actual_Array with
Pre => P.F_Ids.Children'Last >=
P.F_Ids.Children'First, -- Enforced by ada language
Post => (To_Param_Default_Array'Result'First = P.F_Ids.Children'First)
and then (To_Param_Default_Array'Result'Last = P.F_Ids.Children'Last);
function To_Param_Default_Array (P : Param_Spec) return Param_Actual_Array
is
begin
return To_Param_Default_Array (P.F_Ids.Children, P.F_Default_Expr);
end To_Param_Default_Array;
function To_Param_Default_Array
(PL : Param_Spec_List) return Param_Actual_Array with
Pre =>
(for all P of PL => P.F_Ids.Children'Last >= P.F_Ids.Children'First);
function To_Param_Default_Array
(PL : Param_Spec_List) return Param_Actual_Array
is
Return_Length : Integer := 0;
begin
for P of PL loop
Return_Length := Return_Length + P.F_Ids.Children'Length;
end loop;
return Result : Param_Actual_Array (1 .. Return_Length) do
declare
Low : Integer := 1;
begin
for P of PL loop
declare
PAA : constant Param_Actual_Array :=
To_Param_Default_Array (P.As_Param_Spec);
High : constant Integer := Low + PAA'Length - 1;
begin
Result (Low .. High) := PAA;
Low := High + 1;
end;
end loop;
end;
end return;
end To_Param_Default_Array;
function To_Param_Default_Array
(Node : Subp_Spec) return Param_Actual_Array;
function To_Param_Default_Array (Node : Subp_Spec) return Param_Actual_Array
is
begin
if Node.F_Subp_Params.Is_Null then
return Result : Param_Actual_Array (1 .. 0);
else
return To_Param_Default_Array (Node.F_Subp_Params.F_Params);
end if;
end To_Param_Default_Array;
function Param_Expressions
(Nm : Libadalang.Analysis.Name) return Param_Actual_Array
is
begin
Assert
(Check => not Nm.Is_Null,
Message => "Precondition violated: Name is Null");
Assert
(Check => Nm.P_Is_Call,
Message => "Precondition violated: Name is not a Call");
declare
BFPH : constant Base_Formal_Param_Holder := Nm.P_Called_Subp_Spec;
SS : constant Subp_Spec := BFPH.As_Subp_Spec;
begin
Assert
(Check => not SS.Is_Null,
Message => "SS is null => BFPH.Kind = " & BFPH.Kind'Image);
declare
All_Param_Actual_Array : Param_Actual_Array :=
To_Param_Default_Array (SS);
begin
if All_Param_Actual_Array'Length > 0 then
case Nm.Kind is
when Ada_Identifier =>
-- Nothing to handle (no arguments provided)
null;
when Ada_Op =>
case Nm.Parent.Kind is
when Ada_Bin_Op | Ada_Relation_Op =>
-- Handle the two provided arguments
declare
BO : constant Bin_Op := Nm.Parent.As_Bin_Op;
begin
Assert
(Check => All_Param_Actual_Array'Length = 2,
Message =>
"Binary Operator has unexpected length " &
"of " &
All_Param_Actual_Array'Length'Image);
All_Param_Actual_Array
(All_Param_Actual_Array'First) :=
Create_Param_Actual
(Param
(All_Param_Actual_Array
(All_Param_Actual_Array'First)),
BO.F_Left);
All_Param_Actual_Array
(All_Param_Actual_Array'Last) :=
Create_Param_Actual
(Param
(All_Param_Actual_Array
(All_Param_Actual_Array'Last)),
BO.F_Right);
end;
when Ada_Un_Op =>
-- Handle the single provided argument
declare
UO : constant Un_Op := Nm.Parent.As_Un_Op;
begin
Assert
(Check => All_Param_Actual_Array'Length = 1,
Message =>
"Unary Operator has unexpected length " &
"of " &
All_Param_Actual_Array'Length'Image);
All_Param_Actual_Array
(All_Param_Actual_Array'First) :=
Create_Param_Actual
(Param
(All_Param_Actual_Array
(All_Param_Actual_Array'First)),
UO.F_Expr);
end;
when others =>
Assert
(Check => False,
Message =>
"Unexpected Parent of kind " &
Nm.Parent.Kind'Image);
end case;
when Ada_Call_Expr =>
-- Handle provided arguments
declare
CE : constant Call_Expr := Nm.As_Call_Expr;
begin
Assert
(Check => CE.F_Suffix.Kind = Ada_Assoc_List,
Message =>
"Expected Assoc_List yet got " &
CE.F_Suffix.Kind'Image);
declare
AL : constant Assoc_List :=
CE.F_Suffix.As_Assoc_List;
begin
for Param_Expr of AL.P_Zip_With_Params loop
for I in All_Param_Actual_Array'Range
loop -- TODO: can this be done more efficiently?
if Ada.Strings.Equal_Case_Insensitive
(Raw_Signature (Param (Param_Expr)),
Raw_Signature
(Param (All_Param_Actual_Array (I))))
then
All_Param_Actual_Array (I) := Param_Expr;
end if;
end loop;
end loop;
end;
-- Handle Prefix Notation
if Actual
(All_Param_Actual_Array
(All_Param_Actual_Array'First)) =
No_Expr
then
Assert
(Check => CE.F_Name.Kind = Ada_Dotted_Name,
Message =>
"Call Expr - Only expecting no First Value " &
"in case of prefix notaton: " &
"Dotted Name, yet " & CE.F_Name.Kind'Image);
All_Param_Actual_Array
(All_Param_Actual_Array'First) :=
Create_Param_Actual
(Param
(All_Param_Actual_Array
(All_Param_Actual_Array'First)),
CE.F_Name.As_Dotted_Name.F_Prefix);
end if;
end;
when Ada_Dotted_Name =>
-- Handle Prefix Notation
if Actual
(All_Param_Actual_Array
(All_Param_Actual_Array'First)) =
No_Expr
then
All_Param_Actual_Array
(All_Param_Actual_Array'First) :=
Create_Param_Actual
(Param
(All_Param_Actual_Array
(All_Param_Actual_Array'First)),
Nm.As_Dotted_Name.F_Prefix);
end if;
when others =>
Assert
(Check => False,
Message =>
"Unexpectedly no First Value for " & Nm.Kind'Image);
end case;
end if;
return All_Param_Actual_Array;
end;
end;
end Param_Expressions;
function To_Param_Default_Array
(BD : Generic_Formal) return Param_Actual_Array;
function To_Param_Default_Array
(BD : Generic_Formal) return Param_Actual_Array
is
begin
case BD.Kind is
when Ada_Generic_Formal_Obj_Decl =>
declare
GFOD : constant Generic_Formal_Obj_Decl :=
BD.As_Generic_Formal_Obj_Decl;
OD : constant Object_Decl := GFOD.F_Decl.As_Object_Decl;
Children : constant Ada_Node_Array := OD.F_Ids.Children;
begin
return To_Param_Default_Array (Children, OD.F_Default_Expr);
end;
when Ada_Generic_Formal_Subp_Decl =>
declare
GFSD : constant Generic_Formal_Subp_Decl :=
BD.As_Generic_Formal_Subp_Decl;
FSD : constant Formal_Subp_Decl :=
GFSD.F_Decl.As_Formal_Subp_Decl;
begin
-- TODO: how to implement default value box (expression)?
-- see Ada Reference Manual - 12.6 Formal Subprograms
-- http://www.ada-auth.org/standards/12rm/html/RM-12-6.html
return Result : Param_Actual_Array (1 .. 1) do
Result (1) :=
Create_Param_Actual
(FSD.F_Subp_Spec.F_Subp_Name, FSD.F_Default_Expr);
end return;
end;
when Ada_Generic_Formal_Type_Decl =>
declare
GFTD : constant Generic_Formal_Type_Decl :=
BD.As_Generic_Formal_Type_Decl;
TD : constant Type_Decl := GFTD.F_Decl.As_Type_Decl;
begin
return Result : Param_Actual_Array (1 .. 1) do
Result (1) :=
Create_Param_Actual
(TD.F_Name,
No_Expr); -- Types have no default- check with Jeroen
end return;
end;
when Ada_Generic_Formal_Package =>
declare
GFP : constant Generic_Formal_Package :=
BD.As_Generic_Formal_Package;
begin
case GFP.F_Decl.Kind is
when Ada_Package_Decl =>
declare
PD : constant Package_Decl :=
GFP.F_Decl.As_Package_Decl;
begin
return Result : Param_Actual_Array (1 .. 1) do
Result (1) :=
Create_Param_Actual (PD.F_Package_Name,
-- Generic Formal Package has no default
No_Expr);
end return;
end;
when Ada_Generic_Package_Instantiation =>
declare
GPI : constant Generic_Package_Instantiation :=
GFP.F_Decl.As_Generic_Package_Instantiation;
begin
return Result : Param_Actual_Array (1 .. 1) do
Result (1) :=
Create_Param_Actual (GPI.F_Name,
-- Generic Package Instantiation has no default
No_Expr);
end return;
end;
when others =>
Put_Line
("Unexpected Decl kind " & GFP.F_Decl.Kind'Image);
return Result : Param_Actual_Array (1 .. 0);
end case;
end;
when others =>
Put_Line ("Unexpected kind " & BD.Kind'Image);
return Result : Param_Actual_Array (1 .. 0);
end case;
exception
when others =>
Put_Line
("Unexpected Exception (line 158) " & BD.Image & " in " &
BD.Unit.Get_Filename);
BD.Print;
return Result : Param_Actual_Array (1 .. 0);
end To_Param_Default_Array;
function To_Param_Default_Array
(ANL : Ada_Node_List) return Param_Actual_Array;
function To_Param_Default_Array
(ANL : Ada_Node_List) return Param_Actual_Array
is
Return_Length : Integer := 0;
begin
for AN of ANL loop
-- only get parameters defined in Ada_Node_List
-- (and e.g. ignore Ada_Use_Package_Clause)
if AN.Kind in Ada_Generic_Formal then
Return_Length :=
Return_Length +
To_Param_Default_Array (AN.As_Generic_Formal)'Length;
end if;
end loop;
return Result : Param_Actual_Array (1 .. Return_Length) do
declare
Low : Integer := 1;
begin
for AN of ANL loop
if AN.Kind in Ada_Generic_Formal then
declare
PAA : constant Param_Actual_Array :=
To_Param_Default_Array (AN.As_Generic_Formal);
High : constant Integer := Low + PAA'Length - 1;
begin
Result (Low .. High) := PAA;
Low := High + 1;
end;
end if;
end loop;
end;
end return;
exception
when others =>
Put_Line
("Unexpected Exception (line 192) " & ANL.Image & " in " &
ANL.Unit.Get_Filename);
ANL.Print;
return Result : Param_Actual_Array (1 .. 0);
end To_Param_Default_Array;
function To_Param_Default_Array
(GPD : Generic_Package_Decl) return Param_Actual_Array;
function To_Param_Default_Array
(GPD : Generic_Package_Decl) return Param_Actual_Array
is
begin
return To_Param_Default_Array (GPD.F_Formal_Part.F_Decls);
end To_Param_Default_Array;
function Param_Expressions
(GPI : Generic_Package_Instantiation) return Param_Actual_Array
is
AL : constant Assoc_List := GPI.F_Params;
GPN : constant Libadalang.Analysis.Name := GPI.F_Generic_Pkg_Name;
RefDecl : constant Basic_Decl := GPN.P_Referenced_Decl;
GPD : constant Generic_Package_Decl := RefDecl.As_Generic_Package_Decl;
All_Param_Actual_Array : Param_Actual_Array :=
To_Param_Default_Array (GPD);
begin
for Param_Expr of AL.P_Zip_With_Params loop
for I in All_Param_Actual_Array'Range
loop -- TODO: can this be done more efficiently?
if Param (Param_Expr) = Param (All_Param_Actual_Array (I)) then
All_Param_Actual_Array (I) := Param_Expr;
end if;
end loop;
end loop;
return All_Param_Actual_Array;
end Param_Expressions;
function Param_Expressions (Stat : Call_Stmt) return Param_Actual_Array is
Call : constant Libadalang.Analysis.Name := Stat.F_Call;
Default : Param_Actual_Array (1 .. 0);
begin
if Call.Kind = Ada_Call_Expr then
declare
Called_Name : constant Libadalang.Analysis.Name :=
Call.As_Call_Expr.F_Name;
begin
return Param_Expressions (Called_Name);
end;
end if;
return Default;
end Param_Expressions;
function Get_Expression
(The_Array : Param_Actual_Array; Name : String) return Expr'Class
is
begin
for Param_Expr of The_Array loop
if Name = Raw_Signature (Param (Param_Expr)) then
return Actual (Param_Expr);
end if;
end loop;
return No_Expr;
end Get_Expression;
end Rejuvenation.Parameters;
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