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-- --
-- ASIS-for-GNAT IMPLEMENTATION COMPONENTS --
-- --
-- A 4 G . Q U E R I E S --
-- --
-- S p e c --
-- --
-- Copyright (C) 1995-2013, Free Software Foundation, Inc. --
-- --
-- ASIS-for-GNAT 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 2, or (at your option) any later --
-- version. ASIS-for-GNAT is distributed in the hope that it will be use- --
-- ful, but WITHOUT ANY WARRANTY; without even the implied warranty of MER- --
-- CHANTABILITY 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 ASIS-for-GNAT; see file --
-- COPYING. If not, write to the Free Software Foundation, 51 Franklin --
-- Street, Fifth Floor, Boston, MA 02110-1301, USA. --
-- --
-- --
-- --
-- --
-- --
-- --
-- --
-- --
-- ASIS-for-GNAT was originally developed by the ASIS-for-GNAT team at the --
-- Software Engineering Laboratory of the Swiss Federal Institute of --
-- Technology (LGL-EPFL) in Lausanne, Switzerland, in cooperation with the --
-- Scientific Research Computer Center of Moscow State University (SRCC --
-- MSU), Russia, with funding partially provided by grants from the Swiss --
-- National Science Foundation and the Swiss Academy of Engineering --
-- Sciences. ASIS-for-GNAT is now maintained by AdaCore --
-- (http://www.adaccore.com). --
-- --
-- The original version of this component has been developed by Jean-Charles--
-- Marteau (Jean-Charles.Marteau@ensimag.imag.fr) and Serge Reboul --
-- (Serge.Reboul@ensimag.imag.fr), ENSIMAG High School Graduates (Computer --
-- sciences) Grenoble, France in Sema Group Grenoble, France. Now this --
-- component is maintained by the ASIS team --
-- --
------------------------------------------------------------------------------
pragma Ada_2012;
with Asis; use Asis;
----------------------------------------------------------
-- The goal of this package is, when we have an element --
-- to let us have ALL the possible queries for that --
-- element that return its children. --
----------------------------------------------------------
with Asis.Extensions.Flat_Kinds; use Asis.Extensions.Flat_Kinds;
package A4G.Queries is
-- Structural_Queries is an enumeration of all the structural (syntactic)
-- queries. Note that these enumeration literals are overloaded with the
-- names of the query functions themselves. So for example, there is a
-- function Clause_Names in Asis.Clauses, and there is a corresponding
-- enumeration literal Clause_Names below.
type Structural_Queries is
(No_Query,
-- The following are queries of Compilation_Unit
Context_Clause_Elements,
Unit_Declaration,
Pragmas_After,
-- The following are Boolean queries, used only by gnat2xml. These are
-- not used in ASIS itself. Subtype Boolean_Queries below needs to be
-- kept in synch with this.
Has_Aliased,
Has_Null_Exclusion,
Is_Not_Null_Return,
Has_Reverse,
Has_Limited,
Has_Synchronized,
Has_Private,
Has_Abstract,
Has_Tagged,
Is_Overriding_Declaration,
Is_Not_Overriding_Declaration,
Is_Prefix_Call,
Is_Prefix_Notation,
-- The rest below are the normal queries of Elements
-- Queries in A4G.Queries:
All_But_First_Associations,
First_Parameter_Association,
-- Queries in Asis.Clauses:
Clause_Names,
Component_Clause_Position,
Component_Clause_Range,
Component_Clauses,
Mod_Clause_Expression,
Representation_Clause_Expression,
Representation_Clause_Name,
-- Queries in Asis.Declarations:
Aspect_Specifications,
Body_Declarative_Items,
Body_Exception_Handlers,
Body_Statements,
Declaration_Interface_List,
Defining_Prefix,
Defining_Selector,
Discriminant_Part,
Entry_Barrier,
Entry_Family_Definition,
Entry_Index_Specification,
Generic_Actual_Part,
Generic_Formal_Part,
Generic_Unit_Name,
Initialization_Expression,
Iteration_Scheme_Name,
Names,
Object_Declaration_View,
Parameter_Profile,
Private_Part_Declarative_Items,
Protected_Operation_Items,
Renamed_Entity,
Result_Expression,
Result_Profile,
Specification_Subtype_Definition,
Subtype_Indication,
Type_Declaration_View,
Visible_Part_Declarative_Items,
-- Queries in Asis.Definitions:
Access_To_Function_Result_Profile,
Access_To_Object_Definition,
Access_To_Subprogram_Parameter_Profile,
Ancestor_Subtype_Indication,
Anonymous_Access_To_Object_Subtype_Mark,
Array_Component_Definition,
Aspect_Definition,
Aspect_Mark,
Component_Definition_View,
Definition_Interface_List,
Delta_Expression,
Digits_Expression,
Discrete_Ranges,
Discrete_Subtype_Definitions,
Discriminant_Associations,
Discriminant_Direct_Name,
Discriminants,
Enumeration_Literal_Declarations,
Index_Subtype_Definitions,
Integer_Constraint,
Lower_Bound,
Mod_Static_Expression,
Parent_Subtype_Indication,
Private_Part_Items,
Range_Attribute,
Real_Range_Constraint,
Record_Components,
Record_Definition,
Subtype_Constraint,
Subtype_Mark,
Upper_Bound,
Variant_Choices,
Variants,
Visible_Part_Items,
-- Queries in Asis.Elements:
Pragma_Argument_Associations,
-- Queries in Asis.Expressions:
Actual_Parameter,
Allocator_Qualified_Expression,
Allocator_Subtype_Indication,
Array_Component_Associations,
Array_Component_Choices,
Attribute_Designator_Expressions,
Attribute_Designator_Identifier,
Component_Expression,
Converted_Or_Qualified_Expression,
Converted_Or_Qualified_Subtype_Mark,
Dependent_Expression,
Discriminant_Expression,
Discriminant_Selector_Names,
Expression_Parenthesized,
Expression_Paths,
Extension_Aggregate_Expression,
Formal_Parameter,
Function_Call_Parameters,
Index_Expressions,
Iterator_Specification,
Membership_Test_Choices,
Membership_Test_Expression,
Predicate,
Prefix,
Record_Component_Associations,
Record_Component_Choices,
Selector,
Short_Circuit_Operation_Left_Expression,
Short_Circuit_Operation_Right_Expression,
Slice_Range,
Subpool_Name,
-- Queries in Asis.Extensions:
Formal_Subprogram_Default,
-- Queries in Asis.Statements:
Aborted_Tasks,
Accept_Body_Exception_Handlers,
Accept_Body_Statements,
Accept_Entry_Direct_Name,
Accept_Entry_Index,
Accept_Parameters,
Assignment_Expression,
Assignment_Variable_Name,
Associated_Message,
Block_Declarative_Items,
Block_Exception_Handlers,
Block_Statements,
Called_Name,
Call_Statement_Parameters,
Case_Expression,
Case_Path_Alternative_Choices,
Choice_Parameter_Specification,
Condition_Expression,
Delay_Expression,
Exception_Choices,
Exit_Condition,
Exit_Loop_Name,
Extended_Return_Exception_Handlers,
Extended_Return_Statements,
For_Loop_Parameter_Specification,
Goto_Label,
Guard,
Handler_Statements,
Label_Names,
Loop_Statements,
Qualified_Expression,
Raised_Exception,
Requeue_Entry_Name,
Return_Expression,
Return_Object_Declaration,
Sequence_Of_Statements,
Statement_Identifier,
Statement_Paths,
While_Condition
); -- end Structural_Queries
subtype Boolean_Queries is Structural_Queries
range Has_Aliased .. Is_Prefix_Notation;
type Query_Kinds is
(Bug,
-- just for the discriminant default expression
Single_Element_Query,
-- Queries taking an element and returning an element.
Element_List_Query,
-- Queries taking an element and returning a list of elements.
Element_List_Query_With_Boolean,
-- Queries taking an element and a boolean and returning a list
-- of elements.
Boolean_Query,
-- Queries taking an element and returning a Boolean. These are used in
-- gnat2xml.
Single_Element_CU_Query,
-- Queries taking Compilation_Unit and returning an element.
Element_List_CU_Query
-- Queries taking a Compilation_Unit and returning a list of elements.
);
subtype CU_Query_Kinds is Query_Kinds range
Single_Element_CU_Query .. Element_List_CU_Query;
type A_Single_Element_CU_Query is access
function (Elem : Asis.Compilation_Unit) return Asis.Element;
type A_Element_List_CU_Query is access
function
(Elem : Asis.Compilation_Unit;
Bool : Boolean)
return Asis.Element_List;
type A_Single_Element_Query is access
function (Elem : Asis.Element) return Asis.Element;
type A_Element_List_Query is access
function (Elem : Asis.Element) return Asis.Element_List;
type A_Element_List_Query_With_Boolean is access
function
(Elem : Asis.Element;
Bool : Boolean)
return Asis.Element_List;
type A_Boolean_Query is access
function
(Elem : Asis.Element)
return Boolean;
-- Discriminated record that can access any type of query.
type Func_Elem
(Q : Structural_Queries := Structural_Queries'First;
Query_Kind : Query_Kinds := Bug)
is
record
case Query_Kind is
when Bug =>
null;
when Single_Element_CU_Query =>
Func_Simple_CU : A_Single_Element_CU_Query;
when Element_List_CU_Query =>
Func_List_CU : A_Element_List_CU_Query;
when Single_Element_Query =>
Func_Simple : A_Single_Element_Query;
when Element_List_Query =>
Func_List : A_Element_List_Query;
when Element_List_Query_With_Boolean =>
Func_List_Boolean : A_Element_List_Query_With_Boolean;
Bool : Boolean;
when Boolean_Query =>
Func_Boolean : A_Boolean_Query;
end case;
end record;
type Query_Index is new Positive;
subtype Query_Count is Query_Index'Base range 0 .. Query_Index'Last;
type Func_Elem_Array is array (Query_Index range <>) of Func_Elem;
type Query_List is array (Query_Index range <>) of Structural_Queries;
type Query_List_Ptr is access constant Query_List;
No_Queries : aliased constant Query_List := (1 .. 0 => <>);
-- Appropriate_Queries returns the sequence of syntactic queries that
-- applies to a given element or element kind. Syntactic determines the
-- handling of prefix-notation calls; see Asis.Extensions.Iterator for
-- details.
function Appropriate_Queries
(Kind : Flat_Element_Kinds'Base) return Query_List_Ptr;
-- This version operates on an element kind, and behaves as if Syntactic is
-- False.
function Appropriate_Queries
(Element : Asis.Element; Syntactic : Boolean)
return Query_List_Ptr;
-- This version operates on an element, and takes the Syntactic parameter
-- into account.
function Appropriate_Queries
(Element : Asis.Element; Syntactic : Boolean := True)
return Func_Elem_Array;
-- This version is similar to the previous one, but returns the information
-- in a different form (a Func_Elem_Array instead of a Query_List_Ptr).
-- ???We can probably get rid of this last one at some point.
function Num_Queries
(Kind : Flat_Element_Kinds'Base) return A4G.Queries.Query_Count;
-- Number of queries (i.e. subelements), assuming Syntactic = False.
function Get_Func_Elem (Q : Structural_Queries) return Func_Elem;
-- Get the Func_Elem corresponding to the given query, showing the
-- parameter and result type profile, and the actual Ada function to call.
-- The following table is a mapping from queries to the type returned by
-- that query. Queries can also return a Nil_Element. Currently used in
-- gnat2xml.
type Query_Result_Type_Table is
array (Structural_Queries) of Flat_Element_Kinds'Base;
Query_Result_Types : constant Query_Result_Type_Table :=
(No_Query =>
Not_An_Element,
-- The following are queries of Compilation_Unit
Context_Clause_Elements =>
A_Context_Clause_List,
Unit_Declaration =>
A_Declaration_Class,
Pragmas_After =>
An_Element_List,
-- For the Boolean queries, the values below show what is returned to
-- mean True. These queries can also return Not_An_Element, which means
-- False. So for example Has_Aliased returns An_Aliased if "aliased" is
-- present in the source code, and Not_An_Element otherwise.
Has_Aliased =>
An_Aliased,
Has_Null_Exclusion =>
A_Null_Exclusion,
Is_Not_Null_Return =>
A_Not_Null_Return,
Has_Reverse =>
A_Reverse,
Has_Limited =>
A_Limited,
Has_Synchronized =>
A_Synchronized,
Has_Private =>
A_Private,
Has_Abstract =>
An_Abstract,
Has_Tagged =>
A_Tagged,
Is_Overriding_Declaration =>
An_Overriding,
Is_Not_Overriding_Declaration =>
A_Not_Overriding,
Is_Prefix_Call =>
An_Is_Prefix_Call,
Is_Prefix_Notation =>
An_Is_Prefix_Notation,
-- Queries in A4G.Queries:
All_But_First_Associations =>
An_Association_List,
First_Parameter_Association =>
An_Association_Class,
-- Queries in Asis.Clauses:
Clause_Names =>
A_Name_List,
Component_Clause_Position =>
An_Expression_Class,
Component_Clause_Range =>
A_Discrete_Range_Class,
Component_Clauses =>
A_Component_Clause_List,
Mod_Clause_Expression =>
An_Expression_Class,
Representation_Clause_Expression =>
An_Expression_Class,
Representation_Clause_Name =>
A_Name_Class,
-- Queries in Asis.Declarations:
Aspect_Specifications =>
An_Element_List,
Body_Declarative_Items =>
An_Element_List,
Body_Exception_Handlers =>
An_Exception_Handler_List,
Body_Statements =>
A_Statement_List,
Declaration_Interface_List =>
An_Expression_List,
Defining_Prefix =>
A_Name_Class,
Defining_Selector =>
A_Defining_Name_Class,
Discriminant_Part =>
A_Definition_Class,
Entry_Barrier =>
An_Expression_Class,
Entry_Family_Definition =>
A_Discrete_Subtype_Definition_Class,
Entry_Index_Specification =>
A_Declaration_Class,
Generic_Actual_Part =>
An_Association_List,
Generic_Formal_Part =>
An_Element_List,
Generic_Unit_Name =>
An_Expression_Class,
Initialization_Expression =>
An_Expression_Class,
Iteration_Scheme_Name =>
An_Element_Class,
Names =>
A_Defining_Name_List,
Object_Declaration_View =>
A_Definition_Class,
Parameter_Profile =>
A_Parameter_Specification_List,
Private_Part_Declarative_Items =>
A_Declarative_Item_List,
Protected_Operation_Items =>
A_Declaration_List,
Renamed_Entity =>
An_Expression_Class,
Result_Expression =>
An_Expression_Class,
Result_Profile =>
An_Element_Class,
Specification_Subtype_Definition =>
A_Discrete_Subtype_Definition_Class,
Subtype_Indication =>
An_Element_Class,
Type_Declaration_View =>
A_Definition_Class,
Visible_Part_Declarative_Items =>
A_Declarative_Item_List,
-- Queries in Asis.Definitions:
Access_To_Function_Result_Profile =>
An_Element_Class,
Access_To_Object_Definition =>
A_Subtype_Indication,
Access_To_Subprogram_Parameter_Profile =>
A_Parameter_Specification_List,
Ancestor_Subtype_Indication =>
A_Subtype_Indication,
Anonymous_Access_To_Object_Subtype_Mark =>
An_Expression_Class,
Array_Component_Definition =>
A_Component_Definition,
Aspect_Definition =>
An_Element_Class,
Aspect_Mark =>
An_Element_Class,
Component_Definition_View =>
A_Definition_Class,
Definition_Interface_List =>
An_Expression_List,
Delta_Expression =>
An_Expression_Class,
Digits_Expression =>
An_Expression_Class,
Discrete_Ranges =>
A_Discrete_Range_List,
Discrete_Subtype_Definitions =>
A_Definition_List,
Discriminant_Associations =>
A_Discriminant_Association_List,
Discriminant_Direct_Name =>
A_Name_Class,
Discriminants =>
A_Discriminant_Specification_List,
Enumeration_Literal_Declarations =>
A_Declaration_List,
Index_Subtype_Definitions =>
An_Expression_List,
Integer_Constraint =>
A_Range_Constraint_Class,
Lower_Bound =>
An_Expression_Class,
Mod_Static_Expression =>
An_Expression_Class,
Parent_Subtype_Indication =>
A_Subtype_Indication,
Private_Part_Items =>
A_Declarative_Item_List,
Range_Attribute =>
An_Expression_Class,
Real_Range_Constraint =>
A_Range_Constraint_Class,
Record_Components =>
A_Record_Component_List,
Record_Definition =>
A_Definition_Class,
Subtype_Constraint =>
A_Constraint_Class,
Subtype_Mark =>
An_Expression_Class,
Upper_Bound =>
An_Expression_Class,
Variant_Choices =>
An_Element_List,
Variants =>
A_Variant_List,
Visible_Part_Items =>
A_Declarative_Item_List,
-- Queries in Asis.Elements:
Pragma_Argument_Associations =>
An_Association_List,
-- Queries in Asis.Expressions:
Actual_Parameter =>
An_Expression_Class,
Allocator_Qualified_Expression =>
An_Expression_Class,
Allocator_Subtype_Indication =>
A_Subtype_Indication,
Array_Component_Associations =>
An_Association_List,
Array_Component_Choices =>
An_Element_List,
Attribute_Designator_Expressions =>
An_Expression_List,
Attribute_Designator_Identifier =>
An_Expression_Class,
Component_Expression =>
An_Expression_Class,
Converted_Or_Qualified_Expression =>
An_Expression_Class,
Converted_Or_Qualified_Subtype_Mark =>
An_Expression_Class,
Dependent_Expression =>
An_Expression_Class,
Discriminant_Expression =>
An_Expression_Class,
Discriminant_Selector_Names =>
An_Expression_List,
Expression_Parenthesized =>
An_Expression_Class,
Expression_Paths =>
An_Element_List,
Extension_Aggregate_Expression =>
An_Expression_Class,
Formal_Parameter =>
An_Element_Class,
Function_Call_Parameters =>
An_Association_List,
Index_Expressions =>
An_Expression_List,
Iterator_Specification =>
A_Declaration_Class,
Membership_Test_Choices =>
An_Element_List,
Membership_Test_Expression =>
An_Expression_Class,
Predicate =>
An_Expression_Class,
Prefix =>
An_Expression_Class,
Record_Component_Associations =>
An_Association_List,
Record_Component_Choices =>
An_Expression_List,
Selector =>
An_Expression_Class,
Short_Circuit_Operation_Left_Expression =>
An_Expression_Class,
Short_Circuit_Operation_Right_Expression =>
An_Expression_Class,
Slice_Range =>
A_Discrete_Range_Class,
Subpool_Name =>
An_Expression_Class,
-- Queries in Asis.Extensions:
Formal_Subprogram_Default =>
An_Expression_Class,
-- Queries in Asis.Statements:
Aborted_Tasks =>
An_Expression_List,
Accept_Body_Exception_Handlers =>
A_Statement_List,
Accept_Body_Statements =>
A_Statement_List,
Accept_Entry_Direct_Name =>
A_Name_Class,
Accept_Entry_Index =>
An_Expression_Class,
Accept_Parameters =>
A_Parameter_Specification_List,
Assignment_Expression =>
An_Expression_Class,
Assignment_Variable_Name =>
An_Expression_Class,
Associated_Message =>
An_Expression_Class,
Block_Declarative_Items =>
A_Declarative_Item_List,
Block_Exception_Handlers =>
An_Exception_Handler_List,
Block_Statements =>
A_Statement_List,
Called_Name =>
An_Expression_Class,
Call_Statement_Parameters =>
An_Association_List,
Case_Expression =>
An_Expression_Class,
Case_Path_Alternative_Choices =>
An_Element_List,
Choice_Parameter_Specification =>
A_Declaration_Class,
Condition_Expression =>
An_Expression_Class,
Delay_Expression =>
An_Expression_Class,
Exception_Choices =>
An_Element_List,
Exit_Condition =>
An_Expression_Class,
Exit_Loop_Name =>
An_Expression_Class,
Extended_Return_Exception_Handlers =>
An_Exception_Handler_List,
Extended_Return_Statements =>
A_Statement_List,
For_Loop_Parameter_Specification =>
A_Declaration_Class,
Goto_Label =>
An_Expression_Class,
Guard =>
An_Expression_Class,
Handler_Statements =>
A_Statement_List,
Label_Names =>
A_Defining_Name_List,
Loop_Statements =>
A_Statement_List,
Qualified_Expression =>
An_Expression_Class,
Raised_Exception =>
An_Expression_Class,
Requeue_Entry_Name =>
A_Name_Class,
Return_Expression =>
An_Expression_Class,
Return_Object_Declaration =>
A_Declaration_Class,
Sequence_Of_Statements =>
A_Statement_List,
Statement_Identifier =>
A_Defining_Name_Class,
Statement_Paths =>
A_Path_List,
While_Condition =>
An_Expression_Class
); -- end Query_Result_Types
end A4G.Queries;
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