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‎source/ada/lsp-ada_completions-aggregates.adb

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‎source/ada/lsp-ada_completions-aggregates.ads

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‎source/ada/lsp-ada_completions-generic_assoc.adb

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------------------------------------------------------------------------------
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-- Language Server Protocol --
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-- --
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-- Copyright (C) 2022, AdaCore --
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-- --
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-- This is free software; you can redistribute it and/or modify it under --
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-- terms of the GNU General Public License as published by the Free Soft- --
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-- ware Foundation; either version 3, or (at your option) any later ver- --
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-- sion. This software is distributed in the hope that it will be useful, --
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-- but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHAN- --
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-- TABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public --
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-- License for more details. You should have received a copy of the GNU --
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-- General Public License distributed with this software; see file --
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-- COPYING3. If not, go to http://www.gnu.org/licenses for a complete copy --
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-- of the license. --
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------------------------------------------------------------------------------
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with GNATCOLL.Utils;
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with LSP.Ada_Documents;
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with VSS.Strings.Character_Iterators;
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with VSS.Strings.Conversions;
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package body LSP.Ada_Completions.Generic_Assoc is
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------------------------
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-- Propose_Completion --
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------------------------
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procedure Propose_Completion
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(Self :
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LSP.Ada_Completions.Parameters.Parameter_Completion_Provider;
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Sloc : Langkit_Support.Slocs.Source_Location;
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Token : Libadalang.Common.Token_Reference;
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Node : Libadalang.Analysis.Ada_Node;
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Limit : Natural;
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Filter : in out LSP.Ada_Completions.Filters.Filter;
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Names : in out Ada_Completions.Completion_Maps.Map;
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Unsorted_Res : in out LSP.Messages.CompletionItem_Vector)
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is
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pragma Unreferenced (Filter, Sloc, Names);
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use Libadalang.Analysis;
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use Libadalang.Common;
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use LSP.Ada_Completions.Generic_Assoc_Utils;
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Elem_Node : constant Element := Search_Element (Node);
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Token_Kind : Libadalang.Common.Token_Kind := Kind (Data (Token));
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Whitespace_Prefix : VSS.Strings.Virtual_String;
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-- Empty if we already have a whitespace before a ","
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Designators : Laltools.Common.Node_Vectors.Vector;
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function Match_Designators
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(Child : Laltools.Common.Node_Vectors.Vector;
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Parent : Laltools.Common.Node_Vectors.Vector)
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return Boolean;
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-- Return True if all the designators of Child are also in Parent
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function In_Parent
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(Desg : Libadalang.Analysis.Ada_Node;
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Parent : Laltools.Common.Node_Vectors.Vector) return Boolean;
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procedure Generate_Snippets
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(Spec_Designators : Laltools.Common.Node_Vectors.Vector;
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Param_Types : Param_To_Type_Maps.Map;
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Decl : Basic_Decl;
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Title : VSS.Strings.Virtual_String;
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Snippet_Prefix : VSS.Strings.Virtual_String;
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Completion_Prefix : VSS.Strings.Virtual_String);
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---------------
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-- In_Parent --
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---------------
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function In_Parent
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(Desg : Libadalang.Analysis.Ada_Node;
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Parent : Laltools.Common.Node_Vectors.Vector) return Boolean
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is
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Desg_Text : constant Langkit_Support.Text.Text_Type := Desg.Text;
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begin
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for P of Parent loop
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if P.Text = Desg_Text then
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return True;
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end if;
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end loop;
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return False;
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end In_Parent;
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-----------------------
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-- Match_Designators --
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-----------------------
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function Match_Designators
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(Child : Laltools.Common.Node_Vectors.Vector;
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Parent : Laltools.Common.Node_Vectors.Vector)
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return Boolean is
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begin
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for C of Child loop
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if not In_Parent (C, Parent) then
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return False;
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end if;
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end loop;
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return True;
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end Match_Designators;
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-----------------------
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-- Generate_Snippets --
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-----------------------
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procedure Generate_Snippets
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(Spec_Designators : Laltools.Common.Node_Vectors.Vector;
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Param_Types : Param_To_Type_Maps.Map;
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Decl : Basic_Decl;
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Title : VSS.Strings.Virtual_String;
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Snippet_Prefix : VSS.Strings.Virtual_String;
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Completion_Prefix : VSS.Strings.Virtual_String)
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is
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Params_Snippet : VSS.Strings.Virtual_String;
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Snippet_Index : Integer :=
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Integer (Spec_Designators.Length);
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Use_Named_Notation : constant Boolean :=
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Limit > 0
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and then (Snippet_Index = 1 or else Snippet_Index >= Limit);
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begin
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if Match_Designators (Designators, Spec_Designators) then
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for Desg of reverse Spec_Designators loop
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declare
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Name : constant VSS.Strings.Virtual_String :=
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VSS.Strings.To_Virtual_String (Desg.Text);
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Item : LSP.Messages.CompletionItem;
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Snippet : VSS.Strings.Virtual_String;
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Type_Text : constant VSS.Strings.Virtual_String :=
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(if Param_Types.Contains (Desg)
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then VSS.Strings.To_Virtual_String
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(Param_Types (Desg).Node.Text)
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else "");
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begin
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-- Check if Desg is already present
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if not In_Parent (Desg, Designators) then
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-- Add snippet for Desg if it matches the
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-- current prefix
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if Token_Kind in Ada_Par_Open | Ada_Comma
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or else
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Name.Starts_With
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(Completion_Prefix,
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VSS.Strings.Identifier_Caseless)
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then
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-- Snippet Format: "Name => "
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Item.label := Name;
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Item.insertTextFormat :=
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(True, LSP.Messages.PlainText);
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Item.insertText := (True, Value => <>);
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Item.insertText.Value.Append
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(Whitespace_Prefix);
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Item.insertText.Value.Append (Name);
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Item.insertText.Value.Append (" => ");
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Item.kind := (True, LSP.Messages.Field);
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if Param_Types (Desg).Is_Value then
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Item.insertText.Value.Append (Type_Text);
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Item.label.Append (" => ");
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Item.label.Append (Type_Text);
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end if;
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Unsorted_Res.Append (Item);
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end if;
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if Use_Named_Notation then
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-- If Type_Text : "Name => ${idx:Type}"
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-- Else: "Name => $idx"
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Snippet.Append (Name);
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Snippet.Append (" => ");
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if Param_Types (Desg).Is_Value then
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Snippet.Append (Type_Text);
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else
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Snippet.Append ("$");
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if not Type_Text.Is_Empty then
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Snippet.Append ("{");
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end if;
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Snippet.Append
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(VSS.Strings.Conversions.To_Virtual_String
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(GNATCOLL.Utils.Image
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(Snippet_Index, Min_Width => 1)));
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if not Type_Text.Is_Empty then
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Snippet.Append (":");
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Snippet.Append (Type_Text);
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Snippet.Append ("}");
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end if;
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end if;
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else
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-- If Type_Text : "${idx:Name : Type}"
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-- Else: "${idx:Name}"
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if Param_Types (Desg).Is_Value then
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Snippet.Append (Type_Text);
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else
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Snippet.Append ("${");
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Snippet.Append
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(VSS.Strings.Conversions.To_Virtual_String
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(GNATCOLL.Utils.Image
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(Snippet_Index, Min_Width => 1)));
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Snippet.Append (":");
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Snippet.Append (Name);
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if not Type_Text.Is_Empty then
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Snippet.Append (" : ");
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Snippet.Append (Type_Text);
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end if;
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Snippet.Append ("}");
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end if;
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end if;
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Snippet.Append (", ");
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Params_Snippet.Prepend (Snippet);
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end if;
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Snippet_Index := Snippet_Index - 1;
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end;
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end loop;
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-- If the string is empty => nothing to do
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if not Params_Snippet.Is_Empty
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and then Token_Kind in Ada_Par_Open | Ada_Comma
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then
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declare
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Last :
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VSS.Strings.Character_Iterators.Character_Iterator
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:= Params_Snippet.At_Last_Character;
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Success : Boolean with Unreferenced;
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begin
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-- Remove the last 2 characters which are ", " and
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-- replace it by ")" and the final tab stop
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Success := Last.Backward;
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Success := Last.Backward;
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Params_Snippet :=
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Params_Snippet.Slice
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(Params_Snippet.At_First_Character, Last);
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Params_Snippet.Append (")$0");
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end;
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Params_Snippet.Prepend (Snippet_Prefix);
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declare
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Item : LSP.Messages.CompletionItem;
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begin
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Item.label := Title;
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Item.insertTextFormat :=
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(True, LSP.Messages.Snippet);
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Item.insertText := (True, Value => <>);
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Item.insertText.Value.Append (Whitespace_Prefix);
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Item.insertText.Value.Append (Params_Snippet);
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Item.kind := (True, LSP.Messages.Snippet);
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LSP.Ada_Documents.Set_Completion_Item_Documentation
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(Context => Self.Context.all,
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BD => Decl,
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Item => Item,
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Compute_Doc_And_Details =>
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Self.Compute_Doc_And_Details);
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Unsorted_Res.Append (Item);
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end;
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end if;
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end if;
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end Generate_Snippets;
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begin
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if Elem_Node = Null_Element then
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return;
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end if;
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Designators := Get_Designators (Elem_Node);
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if Token_Kind = Ada_Whitespace then
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Token_Kind := Kind (Data (Previous (Token, Exclude_Trivia => True)));
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elsif Token_Kind = Ada_Comma then
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Whitespace_Prefix.Append (" ");
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end if;
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declare
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Completion_Prefix : constant VSS.Strings.Virtual_String :=
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VSS.Strings.To_Virtual_String (Node.Text);
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begin
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for Spec of Get_Spec_Designators
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(E => Elem_Node,
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Context => Self.Context)
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loop
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Generate_Snippets
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(Spec_Designators => Spec.Param_Vector,
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Param_Types => Spec.Param_Types,
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Decl => Spec.Decl,
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Title => Spec.Title,
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Snippet_Prefix => Spec.Prefix,
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Completion_Prefix => Completion_Prefix);
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end loop;
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end;
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end Propose_Completion;
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end LSP.Ada_Completions.Generic_Assoc;

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