|
111
|
1 ------------------------------------------------------------------------------
|
|
|
2 -- --
|
|
|
3 -- GNAT COMPILER COMPONENTS --
|
|
|
4 -- --
|
|
|
5 -- P R E P --
|
|
|
6 -- --
|
|
|
7 -- S p e c --
|
|
|
8 -- --
|
|
131
|
9 -- Copyright (C) 2002-2018, Free Software Foundation, Inc. --
|
|
111
|
10 -- --
|
|
|
11 -- GNAT is free software; you can redistribute it and/or modify it under --
|
|
|
12 -- terms of the GNU General Public License as published by the Free Soft- --
|
|
|
13 -- ware Foundation; either version 3, or (at your option) any later ver- --
|
|
|
14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
|
|
|
15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
|
|
|
16 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
|
|
|
17 -- for more details. You should have received a copy of the GNU General --
|
|
|
18 -- Public License distributed with GNAT; see file COPYING3. If not, go to --
|
|
|
19 -- http://www.gnu.org/licenses for a complete copy of the license. --
|
|
|
20 -- --
|
|
|
21 -- GNAT was originally developed by the GNAT team at New York University. --
|
|
|
22 -- Extensive contributions were provided by Ada Core Technologies Inc. --
|
|
|
23 -- --
|
|
|
24 ------------------------------------------------------------------------------
|
|
|
25
|
|
|
26 with GNAT.Dynamic_Tables;
|
|
|
27
|
|
|
28 with Namet; use Namet;
|
|
|
29 with Types; use Types;
|
|
|
30
|
|
|
31 package Prep is
|
|
|
32
|
|
|
33 -----------------
|
|
|
34 -- Symbol Data --
|
|
|
35 -----------------
|
|
|
36
|
|
|
37 type Symbol_Data is record
|
|
|
38 Symbol : Name_Id := No_Name;
|
|
|
39 -- The symbol in lower case
|
|
|
40
|
|
|
41 Original : Name_Id := No_Name;
|
|
|
42 -- The symbol as originally given in the definition file or on
|
|
|
43 -- the command line.
|
|
|
44
|
|
|
45 On_The_Command_Line : Boolean := False;
|
|
|
46 -- Set to True if symbol is defined on the command line.
|
|
|
47 -- Used to prevent replacement of command line symbols by definition
|
|
|
48 -- file symbols.
|
|
|
49
|
|
|
50 Is_A_String : Boolean := False;
|
|
|
51 -- Indicate if the value of the symbol has been specified as a string
|
|
|
52 -- or simply as a sequence of characters.
|
|
|
53
|
|
|
54 Value : String_Id := No_String;
|
|
|
55 -- The value of the symbol (string or sequence of characters)
|
|
|
56
|
|
|
57 end record;
|
|
|
58
|
|
|
59 True_Value : Symbol_Data :=
|
|
|
60 (Symbol => No_Name,
|
|
|
61 Original => No_Name,
|
|
|
62 On_The_Command_Line => False,
|
|
|
63 Is_A_String => False,
|
|
|
64 Value => No_String);
|
|
|
65
|
|
|
66 type Symbol_Id is new Nat;
|
|
|
67 No_Symbol : constant Symbol_Id := 0;
|
|
|
68
|
|
|
69 package Symbol_Table is new GNAT.Dynamic_Tables
|
|
|
70 (Table_Component_Type => Symbol_Data,
|
|
|
71 Table_Index_Type => Symbol_Id,
|
|
|
72 Table_Low_Bound => 1,
|
|
|
73 Table_Initial => 10,
|
|
|
74 Table_Increment => 100);
|
|
|
75 -- The table of all symbols
|
|
|
76
|
|
|
77 Mapping : Symbol_Table.Instance;
|
|
|
78 -- The mapping table of symbols to values used by procedure Parse_Def_File
|
|
|
79 -- and Preprocess.
|
|
|
80
|
|
|
81 function Index_Of (Symbol : Name_Id) return Symbol_Id;
|
|
|
82 -- Return the index in the Mapping table of Symbol.
|
|
|
83 -- Return No_Symbol if Symbol in not in the Mapping table.
|
|
|
84
|
|
|
85 -- Access to procedure types used by procedure Initialize below:
|
|
|
86
|
|
|
87 type Error_Msg_Proc is access procedure
|
|
|
88 (Msg : String; Flag_Location : Source_Ptr);
|
|
|
89
|
|
|
90 type Scan_Proc is access procedure;
|
|
|
91
|
|
|
92 type Set_Ignore_Errors_Proc is access procedure (To : Boolean);
|
|
|
93
|
|
|
94 type Put_Char_Proc is access procedure (C : Character);
|
|
|
95
|
|
|
96 type New_EOL_Proc is access procedure;
|
|
|
97
|
|
|
98 procedure Initialize;
|
|
|
99 -- Initialize the preprocessor's global structures
|
|
|
100
|
|
|
101 procedure Setup_Hooks
|
|
|
102 (Error_Msg : Error_Msg_Proc;
|
|
|
103 Scan : Scan_Proc;
|
|
|
104 Set_Ignore_Errors : Set_Ignore_Errors_Proc;
|
|
|
105 Put_Char : Put_Char_Proc;
|
|
|
106 New_EOL : New_EOL_Proc);
|
|
|
107 -- Set the i/o hooks used by the preprocessor
|
|
|
108
|
|
|
109 procedure Parse_Def_File;
|
|
|
110 -- Parse the definition file. The definition file must have already been
|
|
|
111 -- loaded and the scanner initialized.
|
|
|
112
|
|
|
113 procedure Preprocess (Source_Modified : out Boolean);
|
|
|
114 -- Preprocess the input file. The input file must have already been loaded
|
|
|
115 -- and the scanner initialized. Source_Modified is set to True iff the
|
|
|
116 -- preprocessor modified the source text.
|
|
|
117
|
|
|
118 procedure Check_Command_Line_Symbol_Definition
|
|
|
119 (Definition : String;
|
|
|
120 Data : out Symbol_Data);
|
|
|
121 -- Check the validity of a command line definition <symbol>=<value>.
|
|
|
122 -- Return the symbol and its value in Data if the definition is valid,
|
|
|
123 -- fail if it is not valid.
|
|
|
124
|
|
|
125 procedure Change_Reserved_Keyword_To_Symbol
|
|
|
126 (All_Keywords : Boolean := False);
|
|
|
127 -- If Token is an Ada reserved word (other than IF, ELSIF, ELSE,
|
|
|
128 -- END, AND, OR, THEN when All_Keywords is False), change it to
|
|
|
129 -- Tok_Identifier with the corresponding Token_Name.
|
|
|
130
|
|
|
131 procedure List_Symbols (Foreword : String);
|
|
|
132 -- List the symbols used for preprocessing a file, with their values.
|
|
|
133 -- If Foreword is not empty, Output Foreword before the list.
|
|
|
134
|
|
|
135 end Prep;
|
