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1 | /* lab.c -- Implementation File (module.c template V1.0) |
2 | Copyright (C) 1995, 2003 Free Software Foundation, Inc. | |
3 | Contributed by James Craig Burley. | |
4 | ||
5 | This file is part of GNU Fortran. | |
6 | ||
7 | GNU Fortran is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2, or (at your option) | |
10 | any later version. | |
11 | ||
12 | GNU Fortran is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU Fortran; see the file COPYING. If not, write to | |
19 | the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
20 | 02111-1307, USA. | |
21 | ||
22 | Related Modules: | |
23 | ||
24 | Description: | |
25 | Complex data abstraction for Fortran labels. Maintains a single master | |
26 | list for all labels; it is expected initialization and termination of | |
27 | this list will occur on program-unit boundaries. | |
28 | ||
29 | Modifications: | |
30 | 22-Aug-89 JCB 1.1 | |
31 | Change ffelab_new for new ffewhere interface. | |
32 | */ | |
33 | ||
34 | /* Include files. */ | |
35 | ||
36 | #include "proj.h" | |
37 | #include "lab.h" | |
38 | #include "malloc.h" | |
39 | ||
40 | /* Externals defined here. */ | |
41 | ||
42 | ffelab ffelab_list_; | |
43 | ffelabNumber ffelab_num_news_; | |
44 | ||
45 | /* Simple definitions and enumerations. */ | |
46 | ||
47 | ||
48 | /* Internal typedefs. */ | |
49 | ||
50 | ||
51 | /* Private include files. */ | |
52 | ||
53 | ||
54 | /* Internal structure definitions. */ | |
55 | ||
56 | ||
57 | /* Static objects accessed by functions in this module. */ | |
58 | ||
59 | ||
60 | /* Static functions (internal). */ | |
61 | ||
62 | ||
63 | /* Internal macros. */ | |
64 | \f | |
65 | ||
66 | /* ffelab_find -- Find the ffelab object having the desired label value | |
67 | ||
68 | ffelab l; | |
69 | ffelabValue v; | |
70 | l = ffelab_find(v); | |
71 | ||
72 | If the desired ffelab object doesn't exist, returns NULL. | |
73 | ||
74 | Straightforward search of list of ffelabs. */ | |
75 | ||
76 | ffelab | |
77 | ffelab_find (ffelabValue v) | |
78 | { | |
79 | ffelab l; | |
80 | ||
81 | for (l = ffelab_list_; (l != NULL) && (ffelab_value (l) != v); l = l->next) | |
82 | ; | |
83 | ||
84 | return l; | |
85 | } | |
86 | ||
87 | /* ffelab_finish -- Shut down label management | |
88 | ||
89 | ffelab_finish(); | |
90 | ||
91 | At the end of processing a program unit, call this routine to shut down | |
92 | label management. | |
93 | ||
94 | Kill all the labels on the list. */ | |
95 | ||
96 | void | |
97 | ffelab_finish (void) | |
98 | { | |
99 | ffelab l; | |
100 | ffelab pl; | |
101 | ||
102 | for (pl = NULL, l = ffelab_list_; l != NULL; pl = l, l = l->next) | |
103 | if (pl != NULL) | |
104 | malloc_kill_ks (ffe_pool_any_unit (), pl, sizeof (*pl)); | |
105 | ||
106 | if (pl != NULL) | |
107 | malloc_kill_ks (ffe_pool_any_unit (), pl, sizeof (*pl)); | |
108 | } | |
109 | ||
110 | /* ffelab_init_3 -- Initialize label management system | |
111 | ||
112 | ffelab_init_3(); | |
113 | ||
114 | Initialize the label management system. Do this before a new program | |
115 | unit is going to be processed. */ | |
116 | ||
117 | void | |
118 | ffelab_init_3 (void) | |
119 | { | |
120 | ffelab_list_ = NULL; | |
121 | ffelab_num_news_ = 0; | |
122 | } | |
123 | ||
124 | /* ffelab_new -- Create an ffelab object. | |
125 | ||
126 | ffelab l; | |
127 | ffelabValue v; | |
128 | l = ffelab_new(v); | |
129 | ||
130 | Create a label having a given value. If the value isn't known, pass | |
131 | FFELAB_valueNONE, and set it later with ffelab_set_value. | |
132 | ||
133 | Allocate, initialize, and stick at top of label list. | |
134 | ||
135 | 22-Aug-89 JCB 1.1 | |
136 | Change for new ffewhere interface. */ | |
137 | ||
138 | ffelab | |
139 | ffelab_new (ffelabValue v) | |
140 | { | |
141 | ffelab l; | |
142 | ||
143 | ++ffelab_num_news_; | |
144 | l = malloc_new_ks (ffe_pool_any_unit (), "FFELAB label", sizeof (*l)); | |
145 | l->next = ffelab_list_; | |
146 | l->hook = FFECOM_labelNULL; | |
147 | l->value = v; | |
148 | l->firstref_line = ffewhere_line_unknown (); | |
149 | l->firstref_col = ffewhere_column_unknown (); | |
150 | l->doref_line = ffewhere_line_unknown (); | |
151 | l->doref_col = ffewhere_column_unknown (); | |
152 | l->definition_line = ffewhere_line_unknown (); | |
153 | l->definition_col = ffewhere_column_unknown (); | |
154 | l->type = FFELAB_typeUNKNOWN; | |
155 | ffelab_list_ = l; | |
156 | return l; | |
157 | } |