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2038 | --
-- Copyright (C) 2014-2022, AdaCore
-- SPDX-License-Identifier: Apache-2.0
--
with Ada.Tags; use Ada.Tags;
with Ada.Unchecked_Conversion;
with Gpr_Parser_Support.Errors; use Gpr_Parser_Support.Errors;
with Gpr_Parser_Support.Internal.Analysis; use Gpr_Parser_Support.Internal.Analysis;
with Gpr_Parser_Support.Internal.Conversions;
use Gpr_Parser_Support.Internal.Conversions;
with Gpr_Parser_Support.Internal.Descriptor;
use Gpr_Parser_Support.Internal.Descriptor;
with Gpr_Parser_Support.Internal.Introspection;
use Gpr_Parser_Support.Internal.Introspection;
-- Even though we don't directly use entities from the Internal.Descriptor
-- package, we still need to import it to get visibility over the
-- Language_Descriptor type (and access its components).
pragma Unreferenced (Gpr_Parser_Support.Internal.Descriptor);
package body Gpr_Parser_Support.Generic_API.Introspection is
use Gpr_Parser_Support.Errors.Introspection;
-- Conversion helpers between the access types in the Generic API private
-- part and in the internal API. We need to have different access types
-- because of issues with the Ada privacy rules.
function "+" is new Ada.Unchecked_Conversion
(Gpr_Parser_Support.Internal.Introspection.Internal_Value_Access,
Gpr_Parser_Support.Generic_API.Introspection.Internal_Value_Access);
function "+" is new Ada.Unchecked_Conversion
(Gpr_Parser_Support.Generic_API.Introspection.Internal_Value_Access,
Gpr_Parser_Support.Internal.Introspection.Internal_Value_Access);
procedure Check_Same_Language (Left, Right : Language_Id);
-- Raise a ``Precondition_Failure`` exception if ``Left`` and ``Right`` are
-- different.
procedure Check_Type (T : Type_Ref);
-- Raise a ``Precondition_Failure`` if ``T`` is ``No_Type_Ref``
procedure Check_Type (Id : Language_Id; T : Type_Index);
-- If ``T`` is not a valid type for the given language, raise a
-- ``Precondition_Failure`` exception.
procedure Check_Value (Value : Value_Ref);
-- Raise a ``Precondition_Failure`` exception if ``Value`` is null
procedure Check_Value_Type
(Value : Value_Ref;
T : Type_Index;
Message : String := "unexpected value type");
-- Raise a ``Precondition_Failure`` exception with ``Message`` if ``Value``
-- does not match ``T``.
procedure Check_Enum_Type (Enum : Type_Ref);
-- If ``Enum`` is not a valid enum type, raise a ``Precondition_Failure``
-- exception.
procedure Check_Enum_Value (Value : Enum_Value_Ref);
-- If ``Value`` is not a valid enum value, raise a ``Precondition_Failure``
-- exception.
procedure Check_Enum_Value (Enum : Type_Ref; Index : Enum_Value_Index);
-- If ``Enum`` is not a valid enum type or if ``Index`` is not a valid
-- value for that type, raise a ``Precondition_Failure`` exception.
procedure Check_Array_Type (T : Type_Ref);
-- If ``T`` is not a valid array type for the given language, raise a
-- ``Precondition_Failure`` exception.
procedure Check_Iterator_Type (T : Type_Ref);
-- If ``T`` is not a valid iterator type for the given language, raise a
-- ``Precondition_Failure`` exception.
procedure Check_Base_Struct_Type (T : Type_Ref);
-- If ``T`` is not a valid base struct type for the given language, raise a
-- ``Precondition_Failure`` exception.
procedure Check_Struct_Type (T : Type_Ref);
-- If ``T`` is not a valid struct type for the given language, raise a
-- ``Precondition_Failure`` exception.
procedure Check_Node_Type (Node : Type_Ref);
-- If ``Node`` is not a valid node type for the given language, raise a
-- ``Precondition_Failure`` exception.
procedure Check_Struct_Member (Member : Struct_Member_Ref);
-- Raise a ``Precondition_Failure`` if ``Member`` is
-- ``No_Struct_Member_Ref``.
procedure Check_Struct_Owns_Member
(Struct : Type_Ref; Member : Struct_Member_Ref);
-- Raise a ``Precondition_Failure`` if ``Member`` is not a member of
-- ``Struct``.
procedure Check_Struct_Member
(Id : Language_Id; Member : Struct_Member_Index);
-- If ``Member`` is not a valid struct member for the given language, raise
-- a ``Precondition_Failure`` exception.
procedure Check_Struct_Member_Argument
(Member : Struct_Member_Ref; Argument : Argument_Index);
-- If ``Member`` is not a valid struct member for the given language or if
-- ``Argument`` is not a valid argument for that member, raise a
-- ``Precondition_Failure`` exception.
procedure Check_Symbol (Symbol : Symbol_Type);
-- If ``Symbol`` is null, raise a ``Precondition_Failure`` exception
function Type_Range
(Id : Language_Id; First, Last : Any_Type_Index) return Type_Ref_Array;
-- Return the array of ``Type_Ref`` objects corresponding to the given
-- range of type indexes.
function Create_Value
(Id : Language_Id; Value : Internal_Value_Access) return Value_Ref;
-- Initialize ``Value`` with ``Id``, set it a ref-count of 1 and return it
-- wrapped as a ``Value_Ref``.
-------------------------
-- Check_Same_Language --
-------------------------
procedure Check_Same_Language (Left, Right : Language_Id) is
begin
if Left /= Right then
raise Precondition_Failure with "inconsistent languages";
end if;
end Check_Same_Language;
----------------
-- Check_Type --
----------------
procedure Check_Type (T : Type_Ref) is
begin
if T.Id = null then
raise Precondition_Failure with "null type reference";
end if;
end Check_Type;
----------------
-- Check_Type --
----------------
procedure Check_Type (Id : Language_Id; T : Type_Index) is
begin
if T > Last_Type (Id) then
raise Precondition_Failure with "invalid type index";
end if;
end Check_Type;
----------------
-- Debug_Name --
----------------
function Debug_Name (T : Type_Ref) return String is
begin
if T = No_Type_Ref then
return "<No_Type_Ref>";
else
return T.Id.Types (T.Index).Debug_Name.all;
end if;
end Debug_Name;
----------------
-- Type_Range --
----------------
function Type_Range
(Id : Language_Id; First, Last : Any_Type_Index) return Type_Ref_Array
is
Prev : Natural := 0;
begin
return Result : Type_Ref_Array (1 .. Natural (Last - First + 1)) do
for I in First .. Last loop
Prev := Prev + 1;
Result (Prev) := From_Index (Id, I);
end loop;
end return;
end Type_Range;
---------------
-- All_Types --
---------------
function All_Types (Id : Language_Id) return Type_Ref_Array is
begin
return Type_Range (Id, 1, Last_Type (Id));
end All_Types;
--------------
-- Language --
--------------
function Language (T : Type_Ref) return Language_Id is
begin
Check_Type (T);
return T.Id;
end Language;
--------------
-- To_Index --
--------------
function To_Index (T : Type_Ref) return Type_Index is
begin
Check_Type (T);
return T.Index;
end To_Index;
----------------
-- From_Index --
----------------
function From_Index (Id : Language_Id; T : Type_Index) return Type_Ref is
begin
Check_Type (Id, T);
return (Id, T);
end From_Index;
---------------
-- Last_Type --
---------------
function Last_Type (Id : Language_Id) return Type_Index is
begin
return Id.Types.all'Last;
end Last_Type;
--------------
-- Category --
--------------
function Category (T : Type_Ref) return Type_Category is
begin
Check_Type (T);
return T.Id.Types.all (T.Index).Category;
end Category;
-----------------
-- Check_Value --
-----------------
procedure Check_Value (Value : Value_Ref) is
begin
if Value.Value = null then
raise Precondition_Failure with "null value reference";
end if;
end Check_Value;
----------------------
-- Check_Value_Type --
----------------------
procedure Check_Value_Type
(Value : Value_Ref;
T : Type_Index;
Message : String := "unexpected value type") is
begin
if not Value.Value.Type_Matches (T) then
raise Precondition_Failure with Message;
end if;
end Check_Value_Type;
------------------
-- Check_Symbol --
------------------
procedure Check_Symbol (Symbol : Symbol_Type) is
begin
if Symbol = null then
raise Precondition_Failure with "null symbol";
end if;
end Check_Symbol;
---------
-- "=" --
---------
function "=" (Left, Right : Value_Ref) return Boolean is
begin
-- Easy case: Left and Right are not only structurally equivalent, but
-- have shallow equality.
if Left.Value = Right.Value then
return True;
-- We cannot dereference both values without preliminary checks because
-- it is legal to get null values. Also make sure we have values of the
-- same type (the comparison would raise a Constraint_Error otherwise).
elsif Left.Value = null
or else Right.Value = null
or else Left.Value.all'Tag /= Right.Value.all'Tag
then
return False;
else
return Left.Value.all = Right.Value.all;
end if;
end "=";
--------------
-- Language --
--------------
function Language (Value : Value_Ref) return Language_Id is
begin
Check_Value (Value);
return Value.Value.Id;
end Language;
-------------
-- Type_Of --
-------------
function Type_Of (Value : Value_Ref) return Type_Ref is
begin
Check_Value (Value);
return From_Index (Value.Value.Id, Value.Value.Type_Of);
end Type_Of;
------------------
-- Type_Matches --
------------------
function Type_Matches (Value : Value_Ref; T : Type_Ref) return Boolean is
begin
Check_Value (Value);
Check_Type (T);
if Value.Value.Id /= T.Id then
raise Precondition_Failure with "inconsistent language";
end if;
return Value.Value.Type_Matches (T.Index);
end Type_Matches;
-----------
-- Image --
-----------
function Image (Value : Value_Ref) return String is
begin
if Value.Value = null then
return "<No_Value_Ref>";
end if;
return Value.Value.Image;
end Image;
------------------
-- Create_Value --
------------------
function Create_Value
(Id : Language_Id; Value : Internal_Value_Access) return Value_Ref is
begin
return Result : Value_Ref do
Value.Id := Id;
Value.Ref_Count := 1;
Result.Value := Value;
end return;
end Create_Value;
---------------
-- From_Unit --
---------------
function From_Unit (Id : Language_Id; Value : Lk_Unit) return Value_Ref is
Result : Internal_Acc_Analysis_Unit;
begin
if Value /= No_Lk_Unit then
Check_Same_Language (Id, Value.Language);
end if;
Result := new Internal_Rec_Analysis_Unit;
Result.Value := Value;
return Create_Value (Id, Internal_Value_Access (Result));
end From_Unit;
-------------
-- As_Unit --
-------------
function As_Unit (Value : Value_Ref) return Lk_Unit is
Id : Language_Id;
V : Internal_Acc_Analysis_Unit;
begin
Check_Value (Value);
Id := Value.Value.Id;
Check_Value_Type (Value, Id.Builtin_Types.Analysis_Unit);
V := Internal_Acc_Analysis_Unit (Value.Value);
return V.Value;
end As_Unit;
------------------
-- From_Big_Int --
------------------
function From_Big_Int
(Id : Language_Id; Value : Big_Integer) return Value_Ref
is
Result : constant Internal_Acc_Big_Int := new Internal_Rec_Big_Int;
begin
Result.Value.Set (Value);
return Create_Value (Id, Internal_Value_Access (Result));
end From_Big_Int;
----------------
-- As_Big_Int --
----------------
function As_Big_Int (Value : Value_Ref) return Big_Integer is
Id : Language_Id;
V : Internal_Acc_Big_Int;
begin
Check_Value (Value);
Id := Value.Value.Id;
Check_Value_Type (Value, Id.Builtin_Types.Big_Int);
V := Internal_Acc_Big_Int (Value.Value);
return Result : Big_Integer do
Result.Set (V.Value);
end return;
end As_Big_Int;
---------------
-- From_Bool --
---------------
function From_Bool (Id : Language_Id; Value : Boolean) return Value_Ref is
Result : constant Internal_Acc_Bool := new Internal_Rec_Bool;
begin
Result.Value := Value;
return Create_Value (Id, Internal_Value_Access (Result));
end From_Bool;
-------------
-- As_Bool --
-------------
function As_Bool (Value : Value_Ref) return Boolean is
Id : Language_Id;
V : Internal_Acc_Bool;
begin
Check_Value (Value);
Id := Value.Value.Id;
Check_Value_Type (Value, Id.Builtin_Types.Bool);
V := Internal_Acc_Bool (Value.Value);
return V.Value;
end As_Bool;
---------------
-- From_Char --
---------------
function From_Char
(Id : Language_Id; Value : Character_Type) return Value_Ref
is
Result : constant Internal_Acc_Character := new Internal_Rec_Character;
begin
Result.Value := Value;
return Create_Value (Id, Internal_Value_Access (Result));
end From_Char;
-------------
-- As_Char --
-------------
function As_Char (Value : Value_Ref) return Character_Type is
Id : Language_Id;
V : Internal_Acc_Character;
begin
Check_Value (Value);
Id := Value.Value.Id;
Check_Value_Type (Value, Id.Builtin_Types.Char);
V := Internal_Acc_Character (Value.Value);
return V.Value;
end As_Char;
--------------
-- From_Int --
--------------
function From_Int (Id : Language_Id; Value : Integer) return Value_Ref is
Result : constant Internal_Acc_Int := new Internal_Rec_Int;
begin
Result.Value := Value;
return Create_Value (Id, Internal_Value_Access (Result));
end From_Int;
------------
-- As_Int --
------------
function As_Int (Value : Value_Ref) return Integer is
Id : Language_Id;
V : Internal_Acc_Int;
begin
Check_Value (Value);
Id := Value.Value.Id;
Check_Value_Type (Value, Id.Builtin_Types.Int);
V := Internal_Acc_Int (Value.Value);
return V.Value;
end As_Int;
--------------------------------
-- From_Source_Location_Range --
--------------------------------
function From_Source_Location_Range
(Id : Language_Id; Value : Source_Location_Range) return Value_Ref
is
Result : constant Internal_Acc_Source_Location_Range :=
new Internal_Rec_Source_Location_Range;
begin
Result.Value := Value;
return Create_Value (Id, Internal_Value_Access (Result));
end From_Source_Location_Range;
------------------------------
-- As_Source_Location_Range --
------------------------------
function As_Source_Location_Range
(Value : Value_Ref) return Source_Location_Range
is
Id : Language_Id;
V : Internal_Acc_Source_Location_Range;
begin
Check_Value (Value);
Id := Value.Value.Id;
Check_Value_Type (Value, Id.Builtin_Types.Source_Location_Range);
V := Internal_Acc_Source_Location_Range (Value.Value);
return V.Value;
end As_Source_Location_Range;
-----------------
-- From_String --
-----------------
function From_String
(Id : Language_Id; Value : Text_Type) return Value_Ref
is
Result : constant Internal_Acc_String := new Internal_Rec_String;
begin
Result.Value := To_Unbounded_Text (Value);
return Create_Value (Id, Internal_Value_Access (Result));
end From_String;
---------------
-- As_String --
---------------
function As_String (Value : Value_Ref) return Text_Type is
Id : Language_Id;
V : Internal_Acc_String;
begin
Check_Value (Value);
Id := Value.Value.Id;
Check_Value_Type (Value, Id.Builtin_Types.String);
V := Internal_Acc_String (Value.Value);
return To_Text (V.Value);
end As_String;
----------------
-- From_Token --
----------------
function From_Token (Id : Language_Id; Value : Lk_Token) return Value_Ref
is
Result : Internal_Acc_Token;
begin
if Value /= No_Lk_Token then
Check_Same_Language (Id, Value.Language);
end if;
Result := new Internal_Rec_Token;
Result.Value := Value;
return Create_Value (Id, Internal_Value_Access (Result));
end From_Token;
--------------
-- As_Token --
--------------
function As_Token (Value : Value_Ref) return Lk_Token is
Id : Language_Id;
V : Internal_Acc_Token;
begin
Check_Value (Value);
Id := Value.Value.Id;
Check_Value_Type (Value, Id.Builtin_Types.Token);
V := Internal_Acc_Token (Value.Value);
return V.Value;
end As_Token;
-----------------
-- From_Symbol --
-----------------
function From_Symbol
(Id : Language_Id; Value : Text_Type) return Value_Ref
is
Result : constant Internal_Acc_Symbol := new Internal_Rec_Symbol;
begin
Result.Value := To_Unbounded_Text (Value);
return Create_Value (Id, Internal_Value_Access (Result));
end From_Symbol;
---------------
-- As_Symbol --
---------------
function As_Symbol (Value : Value_Ref) return Text_Type is
Id : Language_Id;
V : Internal_Acc_Symbol;
begin
Check_Value (Value);
Id := Value.Value.Id;
Check_Value_Type (Value, Id.Builtin_Types.Symbol);
V := Internal_Acc_Symbol (Value.Value);
return To_Text (V.Value);
end As_Symbol;
---------------
-- From_Node --
---------------
function From_Node (Id : Language_Id; Value : Lk_Node) return Value_Ref is
Result : Internal_Acc_Node;
begin
if Value /= No_Lk_Node then
Check_Same_Language (Id, Value.Language);
end if;
Result := new Internal_Rec_Node;
Result.Value := Value;
return Create_Value (Id, Internal_Value_Access (Result));
end From_Node;
-------------
-- As_Node --
-------------
function As_Node (Value : Value_Ref) return Lk_Node is
Id : Language_Id;
V : Internal_Acc_Node;
begin
Check_Value (Value);
Id := Value.Value.Id;
Check_Value_Type (Value, Id.First_Node);
V := Internal_Acc_Node (Value.Value);
return V.Value;
end As_Node;
-------------
-- Type_Of --
-------------
function Type_Of (Node : Lk_Node) return Type_Ref is
begin
if Node = No_Lk_Node then
raise Precondition_Failure with "null node";
end if;
declare
Id : constant Language_Id := Language (Node);
E : constant Internal.Analysis.Internal_Entity :=
Unwrap_Node (Node);
Result : constant Type_Index := Id.Node_Kind (E.Node);
begin
return From_Index (Id, Result);
end;
end Type_Of;
------------------
-- Type_Matches --
------------------
function Type_Matches (Node : Lk_Node; T : Type_Ref) return Boolean is
begin
return From_Node (Language (T), Node).Type_Matches (T);
end Type_Matches;
------------
-- Adjust --
------------
overriding procedure Adjust (Self : in out Value_Ref) is
begin
if Self.Value /= null then
Self.Value.Ref_Count := Self.Value.Ref_Count + 1;
end if;
end Adjust;
--------------
-- Finalize --
--------------
overriding procedure Finalize (Self : in out Value_Ref) is
procedure Free is new Ada.Unchecked_Deallocation
(Internal_Value'Class, Internal_Value_Access);
begin
if Self.Value /= null then
if Self.Value.Ref_Count = 1 then
Self.Value.Destroy;
Free (Self.Value);
else
Self.Value.Ref_Count := Self.Value.Ref_Count - 1;
Self.Value := null;
end if;
end if;
end Finalize;
------------------
-- Is_Enum_Type --
------------------
function Is_Enum_Type (T : Type_Ref) return Boolean is
begin
Check_Type (T);
return T.Index in T.Id.Enum_Types.all'Range;
end Is_Enum_Type;
---------------------
-- Check_Enum_Type --
---------------------
procedure Check_Enum_Type (Enum : Type_Ref) is
begin
if not Is_Enum_Type (Enum) then
raise Precondition_Failure with "invalid enum type";
end if;
end Check_Enum_Type;
----------------------
-- Check_Enum_Value --
----------------------
procedure Check_Enum_Value (Value : Enum_Value_Ref) is
begin
if Value.Enum.Id = null then
raise Precondition_Failure with "null enum value reference";
end if;
end Check_Enum_Value;
----------------------
-- Check_Enum_Value --
----------------------
procedure Check_Enum_Value (Enum : Type_Ref; Index : Enum_Value_Index) is
begin
Check_Enum_Type (Enum);
if Index > Enum.Id.Enum_Types.all (Enum.Index).Last_Value then
raise Precondition_Failure with "invalid enum value index";
end if;
end Check_Enum_Value;
--------------------
-- Enum_Type_Name --
--------------------
function Enum_Type_Name (Enum : Type_Ref) return Name_Type is
begin
Check_Enum_Type (Enum);
return Create_Name (Enum.Id.Enum_Types.all (Enum.Index).Name.all);
end Enum_Type_Name;
--------------------
-- All_Enum_Types --
--------------------
function All_Enum_Types (Id : Language_Id) return Type_Ref_Array is
Enum_Types : Enum_Type_Descriptor_Array renames Id.Enum_Types.all;
begin
return Type_Range (Id, Enum_Types'First, Enum_Types'Last);
end All_Enum_Types;
--------------
-- Enum_For --
--------------
function Enum_For (Value : Enum_Value_Ref) return Type_Ref is
begin
return Value.Enum;
end Enum_For;
------------------------
-- Enum_Default_Value --
------------------------
function Enum_Default_Value (Enum : Type_Ref) return Enum_Value_Ref is
Index : Any_Enum_Value_Index;
begin
Check_Enum_Type (Enum);
Index := Enum.Id.Enum_Types.all (Enum.Index).Default_Value;
return (if Index = No_Enum_Value_Index
then No_Enum_Value_Ref
else From_Index (Enum, Index));
end Enum_Default_Value;
---------------------
-- Enum_Value_Name --
---------------------
function Enum_Value_Name (Value : Enum_Value_Ref) return Name_Type is
begin
Check_Enum_Value (Value);
declare
Enum : Type_Ref renames Value.Enum;
Desc : Enum_Type_Descriptor renames
Enum.Id.Enum_Types.all (Enum.Index).all;
begin
return Create_Name (Desc.Value_Names (Value.Index).all);
end;
end Enum_Value_Name;
----------------
-- Debug_Name --
----------------
function Debug_Name (Value : Enum_Value_Ref) return String is
begin
if Value = No_Enum_Value_Ref then
return "<No_Enum_Value_Ref>";
else
return Debug_Name (Enum_For (Value))
& "." & Image (Format_Name (Enum_Value_Name (Value), Lower));
end if;
end Debug_Name;
---------------------
-- All_Enum_Values --
---------------------
function All_Enum_Values (Enum : Type_Ref) return Enum_Value_Ref_Array is
begin
return Result : Enum_Value_Ref_Array
(1 .. Positive (Enum_Last_Value (Enum)))
do
for I in Result'Range loop
Result (I) := From_Index (Enum, Enum_Value_Index (I));
end loop;
end return;
end All_Enum_Values;
--------------
-- To_Index --
--------------
function To_Index (Value : Enum_Value_Ref) return Enum_Value_Index is
begin
Check_Enum_Value (Value);
return Value.Index;
end To_Index;
----------------
-- From_Index --
----------------
function From_Index
(Enum : Type_Ref; Value : Enum_Value_Index) return Enum_Value_Ref is
begin
Check_Enum_Value (Enum, Value);
return (Enum, Value);
end From_Index;
---------------------
-- Enum_Last_Value --
---------------------
function Enum_Last_Value (Enum : Type_Ref) return Enum_Value_Index is
begin
Check_Enum_Type (Enum);
return Enum.Id.Enum_Types.all (Enum.Index).Last_Value;
end Enum_Last_Value;
-----------------
-- Create_Enum --
-----------------
function Create_Enum (Value : Enum_Value_Ref) return Value_Ref is
Id : Language_Id;
begin
Check_Enum_Value (Value);
Id := Value.Enum.Id;
return Create_Value
(Id, +Id.Create_Enum (Value.Enum.Index, Value.Index));
end Create_Enum;
-------------
-- As_Enum --
-------------
function As_Enum (Value : Value_Ref) return Enum_Value_Ref is
Id : Language_Id;
T : Type_Ref;
V : Base_Internal_Enum_Value_Access;
begin
Check_Value (Value);
Id := Value.Value.Id;
T := From_Index (Id, Value.Value.Type_Of);
if not Is_Enum_Type (T) then
raise Precondition_Failure with "non-enum value";
end if;
V := Base_Internal_Enum_Value_Access (Value.Value);
return From_Index (T, V.Value_Index);
end As_Enum;
-------------------
-- Is_Array_Type --
-------------------
function Is_Array_Type (T : Type_Ref) return Boolean is
begin
Check_Type (T);
return T.Index in T.Id.Array_Types.all'Range;
end Is_Array_Type;
----------------------
-- Check_Array_Type --
----------------------
procedure Check_Array_Type (T : Type_Ref) is
begin
if not Is_Array_Type (T) then
raise Precondition_Failure with "invalid array type";
end if;
end Check_Array_Type;
------------------------
-- Array_Element_Type --
------------------------
function Array_Element_Type (T : Type_Ref) return Type_Ref is
begin
Check_Array_Type (T);
return From_Index (T.Id, T.Id.Array_Types.all (T.Index).Element_Type);
end Array_Element_Type;
---------------------
-- All_Array_Types --
---------------------
function All_Array_Types (Id : Language_Id) return Type_Ref_Array is
Array_Types : Array_Type_Descriptor_Array renames Id.Array_Types.all;
begin
return Type_Range (Id, Array_Types'First, Array_Types'Last);
end All_Array_Types;
------------------
-- Create_Array --
------------------
function Create_Array
(T : Type_Ref; Values : Value_Ref_Array) return Value_Ref
is
ET : constant Type_Index :=
To_Index (Array_Element_Type (T));
Internal_Values : Internal_Value_Array (Values'Range);
begin
Check_Array_Type (T);
for I in Values'Range loop
declare
V : constant Value_Ref := Values (I);
begin
Check_Value (V);
Check_Same_Language (T.Id, V.Language);
Check_Value_Type (V, ET);
Internal_Values (I) := +V.Value;
end;
end loop;
return Create_Value
(T.Id, +T.Id.Create_Array (To_Index (T), Internal_Values));
end Create_Array;
--------------
-- As_Array --
--------------
function As_Array (Value : Value_Ref) return Value_Ref_Array is
begin
return Result : Value_Ref_Array (1 .. Array_Length (Value)) do
for I in Result'Range loop
Result (I) := Array_Item (Value, I);
end loop;
end return;
end As_Array;
------------------
-- Array_Length --
------------------
function Array_Length (Value : Value_Ref) return Natural is
T : Type_Ref;
V : Base_Internal_Array_Value_Access;
begin
Check_Value (Value);
T := Value.Type_Of;
if not Is_Array_Type (T) then
raise Precondition_Failure with "non-array value";
end if;
V := Base_Internal_Array_Value_Access (Value.Value);
return V.Array_Length;
end Array_Length;
----------------
-- Array_Item --
----------------
function Array_Item (Value : Value_Ref; Index : Positive) return Value_Ref
is
V : Base_Internal_Array_Value_Access;
begin
if Index > Array_Length (Value) then
raise Precondition_Failure with "out-of-bounds array index";
end if;
V := Base_Internal_Array_Value_Access (Value.Value);
return Create_Value (V.Id, +V.Array_Item (Index));
end Array_Item;
----------------------
-- Is_Iterator_Type --
----------------------
function Is_Iterator_Type (T : Type_Ref) return Boolean is
begin
Check_Type (T);
return T.Index in T.Id.Iterator_Types.all'Range;
end Is_Iterator_Type;
-------------------------
-- Check_Iterator_Type --
-------------------------
procedure Check_Iterator_Type (T : Type_Ref) is
begin
if not Is_Iterator_Type (T) then
raise Precondition_Failure with "invalid iterator type";
end if;
end Check_Iterator_Type;
---------------------------
-- Iterator_Element_Type --
---------------------------
function Iterator_Element_Type (T : Type_Ref) return Type_Ref is
begin
Check_Iterator_Type (T);
return From_Index (T.Id, T.Id.Iterator_Types.all (T.Index).Element_Type);
end Iterator_Element_Type;
------------------------
-- All_Iterator_Types --
------------------------
function All_Iterator_Types (Id : Language_Id) return Type_Ref_Array is
Iterator_Types : Iterator_Type_Descriptor_Array renames
Id.Iterator_Types.all;
begin
return Type_Range (Id, Iterator_Types'First, Iterator_Types'Last);
end All_Iterator_Types;
-------------------
-- Iterator_Next --
-------------------
function Iterator_Next (Value : Value_Ref) return Value_Ref is
T : Type_Ref;
V : Base_Internal_Iterator_Value_Access;
R : Internal_Value_Access;
begin
Check_Value (Value);
T := Value.Type_Of;
if not Is_Iterator_Type (T) then
raise Precondition_Failure with "non-iterator value";
end if;
V := Base_Internal_Iterator_Value_Access (Value.Value);
R := +V.Next;
if R = null then
return No_Value_Ref;
else
return Create_Value (V.Id, R);
end if;
end Iterator_Next;
-------------------------
-- Is_Base_Struct_Type --
-------------------------
function Is_Base_Struct_Type (T : Type_Ref) return Boolean is
begin
return Is_Struct_Type (T) or else Is_Node_Type (T);
end Is_Base_Struct_Type;
----------------------------
-- Check_Base_Struct_Type --
----------------------------
procedure Check_Base_Struct_Type (T : Type_Ref) is
begin
if not Is_Base_Struct_Type (T) then
raise Precondition_Failure with "invalid base struct type";
end if;
end Check_Base_Struct_Type;
---------------------------
-- Base_Struct_Type_Name --
---------------------------
function Base_Struct_Type_Name (T : Type_Ref) return Name_Type is
begin
Check_Base_Struct_Type (T);
return Create_Name (T.Id.Struct_Types.all (T.Index).Name.all);
end Base_Struct_Type_Name;
---------------------------
-- All_Base_Struct_Types --
---------------------------
function All_Base_Struct_Types (Id : Language_Id) return Type_Ref_Array is
Struct_Types : Struct_Type_Descriptor_Array renames Id.Struct_Types.all;
begin
return Type_Range (Id, Struct_Types'First, Struct_Types'Last);
end All_Base_Struct_Types;
--------------------
-- Is_Struct_Type --
--------------------
function Is_Struct_Type (T : Type_Ref) return Boolean is
begin
Check_Type (T);
return T.Index in T.Id.Struct_Types.all'First .. T.Id.First_Node - 1;
end Is_Struct_Type;
-----------------------
-- Check_Struct_Type --
-----------------------
procedure Check_Struct_Type (T : Type_Ref) is
begin
if not Is_Struct_Type (T) then
raise Precondition_Failure with "invalid struct type";
end if;
end Check_Struct_Type;
----------------------
-- Struct_Type_Name --
----------------------
function Struct_Type_Name (Struct : Type_Ref) return Name_Type is
begin
Check_Struct_Type (Struct);
return Create_Name (Struct.Id.Struct_Types.all (Struct.Index).Name.all);
end Struct_Type_Name;
----------------------
-- All_Struct_Types --
----------------------
function All_Struct_Types (Id : Language_Id) return Type_Ref_Array is
begin
return Type_Range (Id, Id.Struct_Types.all'First, Id.First_Node - 1);
end All_Struct_Types;
-------------------
-- Create_Struct --
-------------------
function Create_Struct
(T : Type_Ref; Values : Value_Ref_Array) return Value_Ref
is
Members : constant Struct_Member_Ref_Array :=
Introspection.Members (T);
Internal_Values : Internal_Value_Array (Values'Range);
begin
Check_Struct_Type (T);
-- Check that Values contain valid values for T's language
for V of Values loop
if V = No_Value_Ref then
raise Precondition_Failure with "invalid null value";
elsif V.Value.Id /= T.Id then
raise Precondition_Failure with "inconsistent language";
end if;
end loop;
-- Check that Values match T's members
if Values'Length /= Members'Length then
raise Precondition_Failure with
Debug_Name (T) & " has" & Natural'Image (Members'Length)
& " members but got" & Natural'Image (Values'Length) & " value(s)";
end if;
for I in 0 .. Members'Length - 1 loop
declare
V : Value_Ref renames Values (Values'First + I);
T : constant Type_Ref := Member_Type (Members (Members'First + I));
begin
if not Type_Matches (V, T) then
raise Precondition_Failure with "member type mismatch";
end if;
end;
end loop;
-- Unpack values for members and actually build the struct
for I in Values'Range loop
Internal_Values (I) := +Values (I).Value;
end loop;
return Create_Value
(T.Id, +T.Id.Create_Struct (To_Index (T), Internal_Values));
end Create_Struct;
------------------
-- Is_Node_Type --
------------------
function Is_Node_Type (T : Type_Ref) return Boolean is
begin
Check_Type (T);
return T.Index in T.Id.First_Node .. T.Id.Struct_Types.all'Last;
end Is_Node_Type;
---------------------
-- Check_Node_Type --
---------------------
procedure Check_Node_Type (Node : Type_Ref) is
begin
if not Is_Node_Type (Node) then
raise Precondition_Failure with "invalid node type";
end if;
end Check_Node_Type;
--------------------
-- Root_Node_Type --
--------------------
function Root_Node_Type (Id : Language_Id) return Type_Ref is
begin
return From_Index (Id, Id.First_Node);
end Root_Node_Type;
--------------------
-- Node_Type_Name --
--------------------
function Node_Type_Name (Node : Type_Ref) return Name_Type is
begin
Check_Node_Type (Node);
return Create_Name (Node.Id.Struct_Types.all (Node.Index).Name.all);
end Node_Type_Name;
-------------------------
-- Node_Type_Repr_Name --
-------------------------
function Node_Type_Repr_Name (Node : Type_Ref) return Text_Type is
begin
Check_Node_Type (Node);
return Node.Id.Struct_Types.all (Node.Index).Repr_Name.all;
end Node_Type_Repr_Name;
-----------------
-- Is_Abstract --
-----------------
function Is_Abstract (Node : Type_Ref) return Boolean is
begin
Check_Node_Type (Node);
return Node.Id.Struct_Types.all (Node.Index).Is_Abstract;
end Is_Abstract;
-------------------
-- Is_Token_Node --
-------------------
function Is_Token_Node (Node : Type_Ref) return Boolean is
begin
Check_Node_Type (Node);
return Node.Id.Struct_Types.all (Node.Index).Is_Token_Node;
end Is_Token_Node;
------------------
-- Is_List_Node --
------------------
function Is_List_Node (Node : Type_Ref) return Boolean is
begin
Check_Node_Type (Node);
return Node.Id.Struct_Types.all (Node.Index).Is_List_Node;
end Is_List_Node;
---------------
-- Base_Type --
---------------
function Base_Type (Node : Type_Ref) return Type_Ref is
begin
Check_Node_Type (Node);
if Node = Root_Node_Type (Node.Id) then
raise Bad_Type_Error with "trying to get base type of root node";
end if;
return From_Index
(Node.Id, Node.Id.Struct_Types.all (Node.Index).Base_Type);
end Base_Type;
-------------------
-- Derived_Types --
-------------------
function Derived_Types (Node : Type_Ref) return Type_Ref_Array is
begin
Check_Node_Type (Node);
declare
Derivations : Type_Index_Array renames
Node.Id.Struct_Types.all (Node.Index).Derivations;
begin
return Result : Type_Ref_Array (Derivations'Range) do
for I in Result'Range loop
Result (I) := From_Index (Node.Id, Derivations (I));
end loop;
end return;
end;
end Derived_Types;
-----------------------
-- Last_Derived_Type --
-----------------------
function Last_Derived_Type (Node : Type_Ref) return Type_Index is
-- Look for the last derivations's derivation, recursively
Result : Any_Type_Index := Node.Index;
begin
Check_Node_Type (Node);
loop
declare
Desc : Struct_Type_Descriptor renames
Node.Id.Struct_Types.all (Result).all;
begin
exit when Desc.Derivations'Length = 0;
Result := Desc.Derivations (Desc.Derivations'Last);
end;
end loop;
return Result;
end Last_Derived_Type;
---------------------
-- Is_Derived_From --
---------------------
function Is_Derived_From (Node, Parent : Type_Ref) return Boolean is
begin
Check_Node_Type (Node);
Check_Node_Type (Parent);
if Node.Id /= Parent.Id then
raise Precondition_Failure with
"Node and Parent belong to different languages";
end if;
declare
Id : constant Language_Id := Node.Id;
Struct_Types : Struct_Type_Descriptor_Array renames
Id.Struct_Types.all;
Cursor : Any_Type_Index := Node.Index;
begin
while Cursor /= No_Type_Index loop
if Cursor = Parent.Index then
return True;
end if;
Cursor := Struct_Types (Cursor).Base_Type;
end loop;
return False;
end;
end Is_Derived_From;
--------------------
-- All_Node_Types --
--------------------
function All_Node_Types (Id : Language_Id) return Type_Ref_Array is
begin
return Type_Range (Id, Id.First_Node, Id.Struct_Types.all'Last);
end All_Node_Types;
-----------------------
-- Grammar_Rule_Type --
-----------------------
function Grammar_Rule_Type (Rule : Grammar_Rule_Ref) return Type_Ref is
begin
Check_Grammar_Rule (Rule);
return From_Index
(Rule.Id, Rule.Id.Grammar_Rules.all (Rule.Index).Return_Type);
end Grammar_Rule_Type;
-------------------------
-- Check_Struct_Member --
-------------------------
procedure Check_Struct_Member (Member : Struct_Member_Ref) is
begin
if Member.Id = null then
raise Precondition_Failure with "null struct member reference";
end if;
end Check_Struct_Member;
-------------------------
-- Check_Struct_Member --
-------------------------
procedure Check_Struct_Member
(Id : Language_Id; Member : Struct_Member_Index) is
begin
if Member not in Id.Struct_Members.all'Range then
raise Precondition_Failure with "invalid struct member index";
end if;
end Check_Struct_Member;
------------------------------
-- Check_Struct_Owns_Member --
------------------------------
procedure Check_Struct_Owns_Member
(Struct : Type_Ref; Member : Struct_Member_Ref)
is
Member_Found : Boolean := False;
begin
for M of Members (Struct) loop
if M = Member then
Member_Found := True;
end if;
end loop;
if not Member_Found then
raise Precondition_Failure with
Debug_Name (Struct) & " does not have the " & Debug_Name (Member)
& " member";
end if;
end Check_Struct_Owns_Member;
----------------------------------
-- Check_Struct_Member_Argument --
----------------------------------
procedure Check_Struct_Member_Argument
(Member : Struct_Member_Ref; Argument : Argument_Index) is
begin
Check_Struct_Member (Member);
declare
Desc : Struct_Member_Descriptor renames
Member.Id.Struct_Members.all (Member.Index).all;
begin
if Argument not in Desc.Arguments'Range then
raise Precondition_Failure with "invalid struct member argument";
end if;
end;
end Check_Struct_Member_Argument;
----------------
-- Debug_Name --
----------------
function Debug_Name (Member : Struct_Member_Ref) return String is
begin
if Member = No_Struct_Member_Ref then
return "<No_Struct_Member_Ref>";
else
return Debug_Name (Owner (Member)) & "."
& Image (Format_Name (Member_Name (Member), Lower));
end if;
end Debug_Name;
-----------
-- Owner --
-----------
function Owner (Member : Struct_Member_Ref) return Type_Ref is
begin
Check_Struct_Member (Member);
return From_Index
(Member.Id, Member.Id.Struct_Members.all (Member.Index).Owner);
end Owner;
-----------------
-- Is_Property --
-----------------
function Is_Property (Member : Struct_Member_Ref) return Boolean is
begin
Check_Struct_Member (Member);
return Member.Index >= Member.Id.First_Property;
end Is_Property;
-----------------
-- Is_Null_For --
-----------------
function Is_Null_For
(Member : Struct_Member_Ref; Node : Type_Ref) return Boolean
is
begin
Check_Struct_Member (Member);
Check_Node_Type (Node);
Check_Same_Language (Member.Id, Node.Id);
Check_Struct_Owns_Member (Node, Member);
declare
M : Struct_Member_Descriptor renames
Member.Id.Struct_Members.all (Member.Index).all;
begin
return
M.Null_For /= null
and then Node.Index in M.Null_For.all'Range
and then M.Null_For.all (Node.Index);
end;
end Is_Null_For;
------------------------
-- Syntax_Field_Index --
------------------------
function Syntax_Field_Index
(Member : Struct_Member_Ref; Node : Type_Ref) return Positive is
begin
Check_Node_Type (Node);
if Is_Abstract (Node) then
raise Precondition_Failure with "node is abstract";
end if;
Check_Struct_Member (Member);
Check_Same_Language (Member.Id, Node.Id);
Check_Struct_Owns_Member (Node, Member);
if not Is_Field (Member) then
raise Precondition_Failure with "member is not a syntax field";
elsif Is_Null_For (Member, Node) then
raise Precondition_Failure with "syntax field is null for this node";
end if;
declare
M : Struct_Member_Descriptor renames
Member.Id.Struct_Members.all (Member.Index).all;
-- Thanks to the checks above, we should never be in a case where
-- ``M.Indexes`` is null or ``Index`` is zero.
Index : Natural renames M.Indexes.all (Node.Index);
begin
return Index;
end;
end Syntax_Field_Index;
-----------------
-- All_Members --
-----------------
function All_Members (Id : Language_Id) return Struct_Member_Ref_Array is
begin
return Result : Struct_Member_Ref_Array
(1 .. Positive (Last_Struct_Member (Id)))
do
for I in Result'Range loop
Result (I) := From_Index (Id, Struct_Member_Index (I));
end loop;
end return;
end All_Members;
-------------
-- Members --
-------------
function Members (Struct : Type_Ref) return Struct_Member_Ref_Array is
Id : Language_Id;
Current_Struct : Any_Type_Index := Struct.Index;
-- Cursor to "climb up" the derivation hierarchy for ``Struct``: we want
-- ``Struct``'s own fields, but also the inherited ones.
Next : Natural;
-- Index in ``Result`` (see below) for the next member to add
begin
Check_Base_Struct_Type (Struct);
Id := Struct.Id;
return Result : Struct_Member_Ref_Array
(1 .. Id.Struct_Types.all (Struct.Index).Inherited_Members)
do
-- Go through the derivation chain and collect members in ``Result``.
-- Add them in reverse order so that in the end, inherited members
-- are first, and are in declaration order.
--
-- Also make sure that, for each member derivation tree, we add only
-- the root member. For instance if struct A defines member M1 and if
-- struct B derives from A and overrides member M1 with M2, then we
-- should include M1 only once in the result.
declare
Added_Trees : array (1 .. Id.Struct_Members.all'Last) of Boolean :=
(others => False);
-- Set of members added to the result so far. Used to avoid adding
-- a member because it both a struct and its base has it.
begin
Next := Result'Last;
while Current_Struct /= No_Type_Index loop
for M of reverse Id.Struct_Types.all (Current_Struct).Members
loop
if not Added_Trees (M) then
Added_Trees (M) := True;
Result (Next) := From_Index (Id, M);
Next := Next - 1;
end if;
end loop;
Current_Struct :=
Id.Struct_Types.all (Current_Struct).Base_Type;
end loop;
end;
end return;
end Members;
-----------------
-- Member_Name --
-----------------
function Member_Name (Member : Struct_Member_Ref) return Name_Type is
begin
Check_Struct_Member (Member);
return Create_Name
(Member.Id.Struct_Members.all (Member.Index).Name.all);
end Member_Name;
-----------------
-- Member_Type --
-----------------
function Member_Type (Member : Struct_Member_Ref) return Type_Ref is
begin
Check_Struct_Member (Member);
return From_Index
(Member.Id, Member.Id.Struct_Members.all (Member.Index).Member_Type);
end Member_Type;
--------------
-- To_Index --
--------------
function To_Index (Member : Struct_Member_Ref) return Struct_Member_Index is
begin
Check_Struct_Member (Member);
return Member.Index;
end To_Index;
----------------
-- From_Index --
----------------
function From_Index
(Id : Language_Id; Member : Struct_Member_Index) return Struct_Member_Ref
is
begin
Check_Struct_Member (Id, Member);
return (Id, Member);
end From_Index;
------------------------
-- Last_Struct_Member --
------------------------
function Last_Struct_Member (Id : Language_Id) return Struct_Member_Index is
begin
return Id.Struct_Members.all'Last;
end Last_Struct_Member;
--------------------------
-- Member_Argument_Type --
--------------------------
function Member_Argument_Type
(Member : Struct_Member_Ref; Argument : Argument_Index) return Type_Ref
is
Id : Language_Id;
begin
Check_Struct_Member (Member);
Check_Struct_Member_Argument (Member, Argument);
Id := Member.Id;
return From_Index
(Id,
Id.Struct_Members.all
(Member.Index).Arguments (Argument).Argument_Type);
end Member_Argument_Type;
-----------------------------------
-- Member_Argument_Default_Value --
-----------------------------------
function Member_Argument_Default_Value
(Member : Struct_Member_Ref; Argument : Argument_Index) return Value_Ref
is
Id : Language_Id;
begin
Check_Struct_Member (Member);
Check_Struct_Member_Argument (Member, Argument);
Id := Member.Id;
declare
V : Default_Value_Descriptor renames
Id.Struct_Members.all (Member.Index)
.Arguments (Argument)
.Default_Value;
begin
case V.Kind is
when None =>
return No_Value_Ref;
when Boolean_Value =>
return From_Bool (Id, V.Boolean_Value);
when Integer_Value =>
return From_Int (Id, V.Integer_Value);
when Character_Value =>
return From_Char (Id, V.Character_Value);
when Enum_Value =>
declare
T : constant Type_Ref := From_Index (Id, V.Enum_Type);
E : constant Enum_Value_Ref := From_Index (T, V.Enum_Value);
begin
return Create_Enum (E);
end;
when Null_Node_Value =>
return From_Node (Id, No_Lk_Node);
end case;
end;
end Member_Argument_Default_Value;
--------------------------
-- Member_Argument_Name --
--------------------------
function Member_Argument_Name
(Member : Struct_Member_Ref; Argument : Argument_Index) return Name_Type
is
begin
Check_Struct_Member (Member);
Check_Struct_Member_Argument (Member, Argument);
return Create_Name
(Member.Id.Struct_Members.all
(Member.Index).Arguments (Argument).Name.all);
end Member_Argument_Name;
--------------------------
-- Member_Last_Argument --
--------------------------
function Member_Last_Argument
(Member : Struct_Member_Ref) return Any_Argument_Index is
begin
Check_Struct_Member (Member);
return Member.Id.Struct_Members.all (Member.Index).Last_Argument;
end Member_Last_Argument;
-----------------
-- Eval_Member --
-----------------
function Eval_Member
(Value : Value_Ref;
Member : Struct_Member_Ref;
Arguments : Value_Ref_Array := (1 .. 0 => No_Value_Ref))
return Value_Ref
is
Id : Language_Id;
T : Type_Ref;
Args_Count : Any_Argument_Index;
begin
-- Check that we have a base struct value
Check_Value (Value);
Id := Value.Value.Id;
T := Type_Of (Value);
Check_Base_Struct_Type (T);
-- Check that we have a valid member for it
Check_Struct_Member (Member);
Check_Same_Language (Id, Member.Id);
Check_Struct_Owns_Member (T, Member);
-- Check that the arguments match Member
Args_Count := Member_Last_Argument (Member);
if Arguments'Length /= Args_Count then
raise Precondition_Failure with
Debug_Name (T) & " takes" & Args_Count'Image
& " arguments but got" & Natural'Image (Arguments'Length)
& " values";
end if;
for I in 1 .. Args_Count loop
declare
A : Value_Ref renames
Arguments (Arguments'First + Natural (I) - 1);
Arg_Type : constant Type_Ref := Member_Argument_Type (Member, I);
begin
Check_Value (A);
Check_Same_Language (Id, A.Value.Id);
Check_Value_Type
(A,
To_Index (Arg_Type),
"unexpected type for argument" & I'Image);
end;
end loop;
-- Finally evaluate the member
if Value.Value.all in Base_Internal_Struct_Value'Class then
pragma Assert (Arguments'Length = 0);
declare
V : constant Base_Internal_Struct_Value_Access :=
Base_Internal_Struct_Value_Access (Value.Value);
begin
return Create_Value (Id, +V.Eval_Member (Member.Index));
end;
else
-- Unpack the arguments and evaluate the member
declare
V : constant Internal_Acc_Node :=
Internal_Acc_Node (Value.Value);
Args : Internal_Value_Array (1 .. Natural (Args_Count));
begin
for I in Args'Range loop
Args (I) := +Arguments (Arguments'First + I - 1).Value;
end loop;
return Create_Value
(Id, +Id.Eval_Node_Member (V, Member.Index, Args));
end;
end if;
end Eval_Member;
----------------------
-- Eval_Node_Member --
----------------------
function Eval_Node_Member
(Value : Lk_Node;
Member : Struct_Member_Ref;
Arguments : Value_Ref_Array := (1 .. 0 => No_Value_Ref))
return Value_Ref
is
Node : Value_Ref;
begin
if Value = No_Lk_Node then
raise Precondition_Failure with "the null node has no member";
end if;
Node := From_Node (Value.Language, Value);
return Eval_Member (Node, Member, Arguments);
end Eval_Node_Member;
---------------------
-- Create_Name_Map --
---------------------
function Create_Name_Map
(Id : Language_Id;
Symbols : Symbol_Table;
Enum_Types : Casing_Convention;
Enum_Values : Casing_Convention;
Struct_Types : Casing_Convention;
Struct_Members : Casing_Convention) return Name_Map
is
function Format_Name
(Name : Name_Type;
Convention : Casing_Convention) return Symbol_Type
is (Find (Symbols, Format_Name (Name, Convention)));
begin
if Id = null then
raise Precondition_Failure with "null language id";
elsif Symbols = null then
raise Precondition_Failure with "null symbol table";
end if;
return Result : Name_Map do
Result.Id := Id;
-- Register enum types and their values
Result.Enum_Value_Maps :=
new Enum_Value_Map_Array (Id.Enum_Types.all'Range);
for Enum_Index in Id.Enum_Types.all'Range loop
declare
T : constant Type_Ref := From_Index (Id, Enum_Index);
Values : Enum_Value_Maps.Map renames
Result.Enum_Value_Maps.all (Enum_Index);
V : Enum_Value_Ref;
begin
Result.Type_Map.Insert
(Format_Name (Enum_Type_Name (T), Enum_Types), T);
for Value_Index in 1 .. Enum_Last_Value (T) loop
V := From_Index (T, Value_Index);
Values.Insert
(Format_Name (Enum_Value_Name (V), Enum_Values), V);
end loop;
end;
end loop;
-- Register struct types
for I in Id.Struct_Types.all'Range loop
declare
T : constant Type_Ref := From_Index (Id, I);
begin
Result.Type_Map.Insert
(Format_Name (Base_Struct_Type_Name (T), Struct_Types), T);
end;
end loop;
-- Precompute casing for struct members
Result.Struct_Member_Names :=
new Struct_Member_Name_Array (1 .. Last_Struct_Member (Id));
for I in Result.Struct_Member_Names.all'Range loop
Result.Struct_Member_Names.all (I) :=
Format_Name (Member_Name (From_Index (Id, I)), Struct_Members);
end loop;
end return;
end Create_Name_Map;
-----------------
-- Lookup_Type --
-----------------
function Lookup_Type (Self : Name_Map; Name : Symbol_Type) return Type_Ref
is
use Named_Type_Maps;
Pos : Cursor;
begin
Check_Name_Map (Self);
Check_Symbol (Name);
Pos := Self.Type_Map.Find (Name);
return (if Has_Element (Pos)
then Element (Pos)
else No_Type_Ref);
end Lookup_Type;
-----------------------
-- Lookup_Enum_Value --
-----------------------
function Lookup_Enum_Value
(Self : Name_Map;
Enum : Type_Ref;
Name : Symbol_Type) return Enum_Value_Ref is
begin
Check_Name_Map (Self);
Check_Enum_Type (Enum);
Check_Same_Language (Self.Id, Enum.Id);
Check_Symbol (Name);
declare
use Enum_Value_Maps;
Value_Map : Map renames Self.Enum_Value_Maps.all (Enum.Index);
Pos : constant Cursor := Value_Map.Find (Name);
begin
return (if Has_Element (Pos)
then Element (Pos)
else No_Enum_Value_Ref);
end;
end Lookup_Enum_Value;
--------------------------
-- Lookup_Struct_Member --
--------------------------
function Lookup_Struct_Member
(Self : Name_Map;
Struct : Type_Ref;
Name : Symbol_Type) return Struct_Member_Ref
is
All_Members : constant Struct_Member_Ref_Array := Members (Struct);
begin
Check_Name_Map (Self);
Check_Same_Language (Self.Id, Struct.Id);
Check_Symbol (Name);
for M of All_Members loop
if Self.Struct_Member_Names.all (To_Index (M)) = Name then
return M;
end if;
end loop;
return No_Struct_Member_Ref;
end Lookup_Struct_Member;
------------
-- Adjust --
------------
overriding procedure Adjust (Self : in out Name_Map) is
begin
if Self.Enum_Value_Maps = null then
return;
end if;
Self.Enum_Value_Maps :=
new Enum_Value_Map_Array'(Self.Enum_Value_Maps.all);
Self.Struct_Member_Names :=
new Struct_Member_Name_Array'(Self.Struct_Member_Names.all);
end Adjust;
--------------
-- Finalize --
--------------
overriding procedure Finalize (Self : in out Name_Map) is
begin
Free (Self.Enum_Value_Maps);
Free (Self.Struct_Member_Names);
end Finalize;
--------------------
-- Check_Name_Map --
--------------------
procedure Check_Name_Map (Self : Name_Map) is
begin
if Self.Id = null then
raise Precondition_Failure with "uninitialized name map";
end if;
end Check_Name_Map;
end Gpr_Parser_Support.Generic_API.Introspection;
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