sym.c
References to this file elsewhere.
1 /***********************************************************************
2
3 COPYRIGHT
4
5 The following is a notice of limited availability of the code and
6 Government license and disclaimer which must be included in the
7 prologue of the code and in all source listings of the code.
8
9 Copyright notice
10 © 1977 University of Chicago
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12 Permission is hereby granted to use, reproduce, prepare
13 derivative works, and to redistribute to others at no charge. If
14 you distribute a copy or copies of the Software, or you modify a
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16 a work based on the Software and make and/or distribute copies of
17 such work, you must meet the following conditions:
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19 a) If you make a copy of the Software (modified or verbatim)
20 it must include the copyright notice and Government
21 license and disclaimer.
22
23 b) You must cause the modified Software to carry prominent
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25 the Software.
26
27 This software was authored by:
28
29 Argonne National Laboratory
30 J. Michalakes: (630) 252-6646; email: michalak@mcs.anl.gov
31 Mathematics and Computer Science Division
32 Argonne National Laboratory, Argonne, IL 60439
33
34 ARGONNE NATIONAL LABORATORY (ANL), WITH FACILITIES IN THE STATES
35 OF ILLINOIS AND IDAHO, IS OWNED BY THE UNITED STATES GOVERNMENT,
36 AND OPERATED BY THE UNIVERSITY OF CHICAGO UNDER PROVISION OF A
37 CONTRACT WITH THE DEPARTMENT OF ENERGY.
38
39 GOVERNMENT LICENSE AND DISCLAIMER
40
41 This computer code material was prepared, in part, as an account
42 of work sponsored by an agency of the United States Government.
43 The Government is granted for itself and others acting on its
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45 this data to reproduce, prepare derivative works, distribute
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49 THEIR EMPLOYEES, MAKES ANY WARRANTY, EXPRESS OR IMPLIED, OR
50 ASSUMES ANY LEGAL LIABILITY OR RESPONSIBILITY FOR THE ACCURACY,
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53 NOT INFRINGE PRIVATELY OWNED RIGHTS.
54
55 ***************************************************************************/
56 /* sym.c
57
58 Implementation dependent routines for using symtab_gen.c
59 in N32 .
60
61 */
62
63 #include <stdio.h>
64 #include "sym.h"
65
66 extern sym_nodeptr symget() ;
67
68 static char ** symtab ; /* 2-19-90 */
69
70 int
71 sym_init() /* 2-19-90, initialize symbol table package */
72 {
73 create_ht( &symtab ) ;
74 if (symtab == NULL)
75 {
76 fprintf(stderr,"init_sym(): could not create hash table") ;
77 exit(1) ;
78 }
79 return(0) ;
80 }
81
82 sym_nodeptr
83 sym_add( name )
84 char * name ;
85 {
86 sym_nodeptr new_sym_node();
87 char **node_name() ;
88 sym_nodeptr *node_next() ;
89 return( symget( name, new_sym_node, node_name, node_next, symtab, 1 ) ) ;
90 }
91
92 sym_nodeptr
93 sym_get( name )
94 char * name ;
95 {
96 sym_nodeptr new_sym_node();
97 char **node_name() ;
98 sym_nodeptr *node_next() ;
99 return( symget( name, new_sym_node, node_name, node_next, symtab, 0 ) ) ;
100 }
101
102 sym_nodeptr
103 new_sym_node()
104 {
105 void * malloc() ;
106 sym_nodeptr p ;
107 p = (sym_nodeptr) malloc( sizeof( struct sym_node ) ) ;
108 p->name = NULL ;
109 p->next = NULL ;
110
111 return( p ) ;
112 }
113
114 char **
115 node_name(p)
116 sym_nodeptr p ;
117 {
118 char ** x ;
119 x = &(p->name) ;
120 return( x ) ;
121 }
122
123 sym_nodeptr *
124 node_next(p)
125 sym_nodeptr p ;
126 {
127 sym_nodeptr *x ;
128 x = &(p->next) ;
129 return( x ) ;
130 }
131
132 int
133 show_entry(x)
134 sym_nodeptr x ;
135 {
136 int i ;
137 if ( x == NULL ) return(0) ;
138 printf("Symbol table entry:\n") ;
139 printf("lexeme %s\n", x->name ) ;
140 printf(" dim %s\n", (x->dim==1?"M":(x->dim==2?"N":"O")) ) ;
141 printf(" ndims %d\n", x->ndims ) ;
142 for ( i = 0 ; i < x->ndims && i < 7 ; i++ )
143 printf(" dim %d -> %s\n",i,(x->dims[i]==1?"M":(x->dims[i]==2?"N":"O")) ) ;
144 return(0) ;
145 }
146
147 /* MEMORY LEAK !!!! -- this just abandons the old table and leaves on the heap. */
148 /* The registry mechanism is not a long-running program and is not apt to
149 run into memory problems. Might want to fix this anyway, though, someday. */
150 int
151 sym_forget()
152 {
153 create_ht( &symtab ) ;
154 if (symtab == NULL)
155 {
156 fprintf(stderr,"init_sym(): could not create hash table") ;
157 exit(1) ;
158 }
159 return(0) ;
160 }
161