1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
|
(* Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc. *)
(* This file is part of GNU Modula-2.
GNU Modula-2 is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 2, or (at your option) any later
version.
GNU Modula-2 is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY 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 along
with gm2; see the file COPYING. If not, write to the Free Software
Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *)
MODULE testcse16 ;
CONST
MaxScopes = 20 ; (* Maximum number of scopes at any one time. *)
NulSym = 0 ;
TYPE
CallFrame = RECORD
Main : CARDINAL ; (* Main scope for insertions *)
Search: CARDINAL ; (* Search scope for symbol searches *)
Start : CARDINAL ; (* ScopePtr value before StartScope *)
(* was called. *)
END ;
VAR
ScopeCallFrame: ARRAY [1..MaxScopes] OF CallFrame ;
ScopePtr : CARDINAL ;
PROCEDURE foo (Sym: CARDINAL) ;
BEGIN
INC(ScopePtr) ;
WITH ScopeCallFrame[ScopePtr] DO
Main := ScopeCallFrame[ScopePtr-1].Main ;
(*
Start := ScopeCallFrame[ScopePtr-1].Start ;
Search := Sym
*)
END
END foo ;
PROCEDURE IsAlreadyDeclaredSym (Name: CARDINAL) : BOOLEAN ;
BEGIN
WITH ScopeCallFrame[ScopePtr] DO
RETURN( GetLocalSym(ScopeCallFrame[ScopePtr].Main, Name)#NulSym )
END
END IsAlreadyDeclaredSym ;
PROCEDURE GetLocalSym (Sym: CARDINAL; Name: CARDINAL) : CARDINAL ;
BEGIN
RETURN( 0 )
END GetLocalSym ;
BEGIN
ScopePtr := 1 ;
WITH ScopeCallFrame[ScopePtr] DO
Main := 1 ;
Start := 1 ;
Search := 1
END ;
foo(1000) ;
IF ScopeCallFrame[ScopePtr].Main#ScopeCallFrame[ScopePtr-1].Main
THEN
HALT
END ;
(*
IF IsAlreadyDeclaredSym(1234)
THEN
END
*)
END testcse16.
|
