1 ------------------------------------------------------------------------------
3 -- GNAT SYSTEM UTILITIES --
10 -- Copyright (C) 1992-2001 Free Software Foundation, Inc. --
12 -- GNAT is free software; you can redistribute it and/or modify it under --
13 -- terms of the GNU General Public License as published by the Free Soft- --
14 -- ware Foundation; either version 2, or (at your option) any later ver- --
15 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
16 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
17 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
18 -- for more details. You should have received a copy of the GNU General --
19 -- Public License distributed with GNAT; see file COPYING. If not, write --
20 -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
21 -- MA 02111-1307, USA. --
23 -- GNAT was originally developed by the GNAT team at New York University. --
24 -- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
26 ------------------------------------------------------------------------------
28 -- Program to construct the spec and body of the Nmake package
32 -- sinfo.ads Spec of Sinfo package
33 -- nmake.adt Template for Nmake package
37 -- nmake.ads Spec of Nmake package
38 -- nmake.adb Body of Nmake package
40 -- Note: this program assumes that sinfo.ads has passed the error checks that
41 -- are carried out by the csinfo utility, so it does not duplicate these
42 -- checks and assumes that sinfo.ads has the correct form.
44 -- In the absence of any switches, both the ads and adb files are output.
45 -- The switch -s or /s indicates that only the ads file is to be output.
46 -- The switch -b or /b indicates that only the adb file is to be output.
48 -- If a file name argument is given, then the output is written to this file
49 -- rather than to nmake.ads or nmake.adb. A file name can only be given if
50 -- exactly one of the -s or -b options is present.
52 with Ada.Command_Line; use Ada.Command_Line;
53 with Ada.Strings.Unbounded; use Ada.Strings.Unbounded;
54 with Ada.Strings.Unbounded.Text_IO; use Ada.Strings.Unbounded.Text_IO;
55 with Ada.Strings.Maps; use Ada.Strings.Maps;
56 with Ada.Strings.Maps.Constants; use Ada.Strings.Maps.Constants;
57 with Ada.Text_IO; use Ada.Text_IO;
59 with GNAT.Spitbol; use GNAT.Spitbol;
60 with GNAT.Spitbol.Patterns; use GNAT.Spitbol.Patterns;
65 -- Raised to terminate execution
69 Arg_List : VString := Nul;
70 Comment : VString := Nul;
71 Default : VString := Nul;
72 Field : VString := Nul;
73 Line : VString := Nul;
74 Node : VString := Nul;
75 Op_Name : VString := Nul;
76 Prevl : VString := Nul;
77 Synonym : VString := Nul;
83 FileS : VString := V ("nmake.ads");
84 FileB : VString := V ("nmake.adb");
85 -- Set to null if corresponding file not to be generated
87 Given_File : VString := Nul;
88 -- File name given by command line argument
91 OutS, OutB : File_Type;
93 wsp : Pattern := Span (' ' & ASCII.HT);
95 -- Note: in following patterns, we break up the word revision to
96 -- avoid RCS getting enthusiastic about updating the reference!
98 Body_Only : Pattern := BreakX (' ') * X & Span (' ') & "-- body only";
99 Spec_Only : Pattern := BreakX (' ') * X & Span (' ') & "-- spec only";
101 Node_Hdr : Pattern := wsp & "-- N_" & Rest * Node;
102 Punc : Pattern := BreakX (" .,");
104 Binop : Pattern := wsp & "-- plus fields for binary operator";
105 Unop : Pattern := wsp & "-- plus fields for unary operator";
106 Syn : Pattern := wsp & "-- " & Break (' ') * Synonym
107 & " (" & Break (')') * Field & Rest * Comment;
109 Templ : Pattern := BreakX ('T') * A & "T e m p l a t e";
110 Spec : Pattern := BreakX ('S') * A & "S p e c";
112 Sem_Field : Pattern := BreakX ('-') & "-Sem";
113 Lib_Field : Pattern := BreakX ('-') & "-Lib";
115 Get_Field : Pattern := BreakX (Decimal_Digit_Set) * Field;
117 Get_Dflt : Pattern := BreakX ('(') & "(set to "
118 & Break (" ") * Default & " if";
120 Next_Arg : Pattern := Break (',') * Arg & ',';
122 Op_Node : Pattern := "Op_" & Rest * Op_Name;
124 Shft_Rot : Pattern := "Shift_" or "Rotate_";
126 No_Ent : Pattern := "Or_Else" or "And_Then" or "In" or "Not_In";
130 V_String_Id : constant VString := V ("String_Id");
131 V_Node_Id : constant VString := V ("Node_Id");
132 V_Name_Id : constant VString := V ("Name_Id");
133 V_List_Id : constant VString := V ("List_Id");
134 V_Elist_Id : constant VString := V ("Elist_Id");
135 V_Boolean : constant VString := V ("Boolean");
137 procedure WriteS (S : String);
138 procedure WriteB (S : String);
139 procedure WriteBS (S : String);
140 procedure WriteS (S : VString);
141 procedure WriteB (S : VString);
142 procedure WriteBS (S : VString);
143 -- Write given line to spec or body file or both if active
145 procedure WriteB (S : String) is
152 procedure WriteB (S : VString) is
159 procedure WriteBS (S : String) is
170 procedure WriteBS (S : VString) is
181 procedure WriteS (S : String) is
188 procedure WriteS (S : VString) is
195 -- Start of processing for XNmake
198 -- Capture our revision (following line updated by RCS)
202 Anchored_Mode := True;
204 for ArgN in 1 .. Argument_Count loop
206 Arg : constant String := Argument (ArgN);
209 if Arg (1) = '-' then
211 and then (Arg (2) = 'b' or else Arg (2) = 'B')
216 and then (Arg (2) = 's' or else Arg (2) = 'S')
225 if Given_File /= Nul then
228 Given_File := V (Arg);
234 if FileS = Nul and then FileB = Nul then
237 elsif Given_File /= Nul then
241 elsif FileS = Nul then
249 Open (InS, In_File, "sinfo.ads");
250 Open (InT, In_File, "nmake.adt");
253 Create (OutS, Out_File, S (FileS));
257 Create (OutB, Out_File, S (FileB));
260 Anchored_Mode := True;
262 -- Copy initial part of template to spec and body
265 Line := Get_Line (InT);
267 -- Skip lines describing the template
269 if Match (Line, "-- This file is a template") then
271 Line := Get_Line (InT);
276 exit when Match (Line, "package");
278 if Match (Line, Body_Only, M) then
282 elsif Match (Line, Spec_Only, M) then
287 if Match (Line, Templ, M) then
288 Replace (M, A & " S p e c ");
293 if Match (Line, Spec, M) then
294 Replace (M, A & "B o d y");
301 -- Package line reached
303 WriteS ("package Nmake is");
304 WriteB ("package body Nmake is");
307 -- Copy rest of lines up to template insert point to spec only
310 Line := Get_Line (InT);
311 exit when Match (Line, "!!TEMPLATE INSERTION POINT");
315 -- Here we are doing the actual insertions, loop through node types
318 Line := Get_Line (InS);
320 if Match (Line, Node_Hdr)
321 and then not Match (Node, Punc)
322 and then Node /= "Unused"
324 exit when Node = "Empty";
325 Prevl := " function Make_" & Node & " (Sloc : Source_Ptr";
328 -- Loop through fields of one node
331 Line := Get_Line (InS);
334 if Match (Line, Binop) then
335 WriteBS (Prevl & ';');
336 Append (Arg_List, "Left_Opnd,Right_Opnd,");
338 " " & Rpad ("Left_Opnd", NWidth) & " : Node_Id;");
340 " " & Rpad ("Right_Opnd", NWidth) & " : Node_Id";
342 elsif Match (Line, Unop) then
343 WriteBS (Prevl & ';');
344 Append (Arg_List, "Right_Opnd,");
345 Prevl := " " & Rpad ("Right_Opnd", NWidth) & " : Node_Id";
347 elsif Match (Line, Syn) then
348 if Synonym /= "Prev_Ids"
349 and then Synonym /= "More_Ids"
350 and then Synonym /= "Comes_From_Source"
351 and then Synonym /= "Paren_Count"
352 and then not Match (Field, Sem_Field)
353 and then not Match (Field, Lib_Field)
355 Match (Field, Get_Field);
357 if Field = "Str" then Field := V_String_Id;
358 elsif Field = "Node" then Field := V_Node_Id;
359 elsif Field = "Name" then Field := V_Name_Id;
360 elsif Field = "List" then Field := V_List_Id;
361 elsif Field = "Elist" then Field := V_Elist_Id;
362 elsif Field = "Flag" then Field := V_Boolean;
365 if Field = "Boolean" then
366 Default := V ("False");
371 Match (Comment, Get_Dflt);
373 WriteBS (Prevl & ';');
374 Append (Arg_List, Synonym & ',');
375 Rpad (Synonym, NWidth);
378 Prevl := " " & Synonym & " : " & Field;
381 " " & Synonym & " : " & Field & " := " & Default;
387 WriteBS (Prevl & ')');
388 WriteS (" return Node_Id;");
389 WriteS (" pragma Inline (Make_" & Node & ");");
390 WriteB (" return Node_Id");
392 WriteB (" N : constant Node_Id :=");
394 if Match (Node, "Defining_Identifier") or else
395 Match (Node, "Defining_Character") or else
396 Match (Node, "Defining_Operator")
398 WriteB (" New_Entity (N_" & Node & ", Sloc);");
400 WriteB (" New_Node (N_" & Node & ", Sloc);");
405 while Match (Arg_List, Next_Arg, "") loop
406 if Length (Arg) < NWidth then
407 WriteB (" Set_" & Arg & " (N, " & Arg & ");");
409 WriteB (" Set_" & Arg);
410 WriteB (" (N, " & Arg & ");");
414 if Match (Node, Op_Node) then
415 if Node = "Op_Plus" then
416 WriteB (" Set_Chars (N, Name_Op_Add);");
418 elsif Node = "Op_Minus" then
419 WriteB (" Set_Chars (N, Name_Op_Subtract);");
421 elsif Match (Op_Name, Shft_Rot) then
422 WriteB (" Set_Chars (N, Name_" & Op_Name & ");");
425 WriteB (" Set_Chars (N, Name_" & Node & ");");
428 if not Match (Op_Name, No_Ent) then
429 WriteB (" Set_Entity (N, Standard_" & Node & ");");
433 WriteB (" return N;");
434 WriteB (" end Make_" & Node & ';');
439 WriteBS ("end Nmake;");
444 Put_Line (Standard_Error, "usage: xnmake [-b] [-s] [filename]");