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198 | -- Abstract :
--
-- Parse a file with the WisiToken lalr parser, output the corrected token stream.
--
-- Copyright (C) 2020 Stephen Leake All Rights Reserved.
--
-- This library is free software; you can redistribute it and/or modify it
-- under terms of the GNU General Public License as published by the Free
-- Software Foundation; either version 3, or (at your option) any later
-- version. This library is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHAN-
-- TABILITY or FITNESS FOR A PARTICULAR PURPOSE.
pragma License (GPL);
with Ada.Characters.Handling;
with Ada.Command_Line;
with Ada.Directories;
with Ada.Exceptions;
with Ada.IO_Exceptions;
with Ada.Strings.Unbounded;
with Ada.Text_IO; use Ada.Text_IO;
with Ada_Annex_P_Process_Actions;
with Ada_Annex_P_Process_LALR_Main;
with Ada_Annex_P_Process_LR1_Main;
with GNAT.Traceback.Symbolic;
with WisiToken.Parse.LR.McKenzie_Recover.Ada;
with WisiToken.Parse.LR.Parser;
with WisiToken.Syntax_Trees;
with WisiToken.Text_IO_Trace;
procedure Dump_WisiToken_Corrected
is
use WisiToken;
use all type Ada_Annex_P_Process_Actions.Token_Enum_ID;
procedure Put_Usage
is begin
Put_Line (Standard_Error, "dump_wisitoken_corrected <alg> <file> [trace_parse trace_mckenzie]");
Put_Line ("alg {LR1 | LALR}");
end Put_Usage;
File_Name : Ada.Strings.Unbounded.Unbounded_String;
Trace : aliased WisiToken.Text_IO_Trace.Trace;
Log_File : Ada.Text_IO.File_Type;
Parser : WisiToken.Parse.LR.Parser.Parser;
function Image (Node : in WisiToken.Syntax_Trees.Valid_Node_Access) return String
is
use Ada_Annex_P_Process_Actions;
use WisiToken.Syntax_Trees;
Punctuation_Image : constant Token_ID_Array_String (+LEFT_PAREN_ID .. +TICK_2_ID) :=
(new String'("("),
new String'("["),
new String'(")"),
new String'("]"),
new String'("&"),
new String'("@"),
new String'("|"),
new String'("<>"),
new String'(":"),
new String'(":="),
new String'(","),
new String'("."),
new String'(".."),
new String'("="),
new String'("=>"),
new String'(">"),
new String'(">="),
new String'(">>"),
new String'("<"),
new String'("<="),
new String'("<<"),
new String'("-"),
new String'("+"),
new String'(";"),
new String'("/"),
new String'("/="),
new String'("*"),
new String'("**"),
new String'("'"),
new String'("'"));
Tree : WisiToken.Syntax_Trees.Tree renames Parser.Tree;
ID : constant Token_ID := Tree.ID (Node);
begin
if Tree.Label (Node) = Source_Terminal then
declare
Token : constant WisiToken.Base_Token := Tree.Base_Token (Node);
begin
case To_Token_Enum (ID) is
when IDENTIFIER_ID =>
return "IDENTIFIER " & Parser.Tree.Lexer.Buffer_Text (Token.Byte_Region);
when CHARACTER_LITERAL_ID =>
return "CHARACTER_LITERAL " & Parser.Tree.Lexer.Buffer_Text (Token.Byte_Region);
when NUMERIC_LITERAL_ID =>
return "NUMERIC_LITERAL";
when STRING_LITERAL_ID =>
return "STRING_LITERAL";
when others =>
return Parser.Tree.Lexer.Buffer_Text (Token.Byte_Region);
end case;
end;
else
if -ID in RIGHT_PAREN_ID .. TICK_2_ID then
return Punctuation_Image (ID).all;
elsif -ID = IDENTIFIER_ID then
return "IDENTIFIER";
elsif -ID = CHARACTER_LITERAL_ID then
return "CHARACTER_LITERAL";
else
return Ada.Characters.Handling.To_Lower (Ada_Annex_P_Process_Actions.Descriptor.Image (ID).all);
end if;
end if;
end Image;
begin
declare
use Ada.Command_Line;
use Ada.Directories;
begin
Set_Exit_Status (Success);
if Argument_Count < 2 then
Put_Usage;
Set_Exit_Status (Failure);
return;
end if;
if Argument (1) = "LR1" then
WisiToken.Parse.LR.Parser.New_Parser
(Parser,
Trace'Unrestricted_Access,
Ada_Annex_P_Process_LR1_Main.Create_Lexer,
Ada_Annex_P_Process_LR1_Main.Create_Parse_Table
(Text_Rep_File_Name => Containing_Directory (Command_Name) & "/ada_lr1_parse_table.txt"),
WisiToken.Parse.LR.McKenzie_Recover.Ada.Language_Fixes'Access,
WisiToken.Parse.LR.McKenzie_Recover.Ada.Matching_Begin_Tokens'Access,
WisiToken.Parse.LR.McKenzie_Recover.Ada.String_ID_Set'Access,
User_Data => null);
else
WisiToken.Parse.LR.Parser.New_Parser
(Parser,
Trace'Unrestricted_Access,
Ada_Annex_P_Process_LALR_Main.Create_Lexer,
Ada_Annex_P_Process_LALR_Main.Create_Parse_Table,
WisiToken.Parse.LR.McKenzie_Recover.Ada.Language_Fixes'Access,
WisiToken.Parse.LR.McKenzie_Recover.Ada.Matching_Begin_Tokens'Access,
WisiToken.Parse.LR.McKenzie_Recover.Ada.String_ID_Set'Access,
User_Data => null);
end if;
File_Name := +Argument (2);
begin
Parser.Tree.Lexer.Reset_With_File (-File_Name);
exception
when Ada.IO_Exceptions.Name_Error =>
Put_Line (Standard_Error, "'" & (-File_Name) & "' cannot be opened");
Set_Exit_Status (Failure);
return;
end;
if Argument_Count >= 3 then
WisiToken.Trace_Parse := Integer'Value (Argument (3));
end if;
if Argument_Count >= 4 then
WisiToken.Trace_McKenzie := Integer'Value (Argument (4));
end if;
end;
Parser.Trace.Set_Prefix (";; "); -- so we get the same debug messages as Emacs_Wisi_Common_Parse
Parser.Table.McKenzie_Param.Task_Count := 1; -- minimize race conditions
Parser.Parse (Log_File);
if Trace_Parse > 0 then
Parser.Put_Errors;
end if;
declare
Terminals : constant WisiToken.Syntax_Trees.Valid_Node_Access_Array :=
Parser.Tree.Get_Terminals (Parser.Tree.Root);
begin
for T of Terminals loop
Put_Line (Image (T));
end loop;
end;
exception
when E : others =>
Put_Line (Standard_Error, -File_Name & ":1:1");
Put_Line (Standard_Error,
"exception " & Ada.Exceptions.Exception_Name (E) & ": " & Ada.Exceptions.Exception_Message (E));
Put_Line (Standard_Error, GNAT.Traceback.Symbolic.Symbolic_Traceback (E));
Ada.Command_Line.Set_Exit_Status (Ada.Command_Line.Failure);
end Dump_WisiToken_Corrected;
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