tools/sym.c

   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
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   9      Copyright notice
  10        (c) 1977  University of Chicago
  11
  12      Permission is hereby granted to use, reproduce, prepare
  13      derivative works, and to redistribute to others at no charge.  If
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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.
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  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
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  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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  52      PRODUCT, OR PROCESS DISCLOSED, OR REPRESENTS THAT ITS USE WOULD
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  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 <stdlib.h>
  65 #include "protos.h"
  66 #include "sym.h"
  67
  68 extern sym_nodeptr symget(char *name, sym_nodeptr (*newnode)(), char  **(*nodename)(sym_nodeptr), sym_nodeptr *(*nodenext)(sym_nodeptr), char ** symtab, int flag);
  69
  70 static char ** symtab ;  /* 2-19-90 */
  71
  72
  73 sym_nodeptr
  74 new_sym_node()
  75 {
  76     sym_nodeptr p ;
  77     p = (sym_nodeptr) malloc( sizeof( struct sym_node ) ) ;
  78     p->name = NULL ;
  79     p->next = NULL ;
  80
  81     return( p ) ;
  82 }
  83
  84 char **
  85 node_name(sym_nodeptr p)
  86 {
  87     char ** x ;
  88     x = &(p->name) ;
  89     return( x ) ;
  90 }
  91
  92 sym_nodeptr *
  93 node_next(sym_nodeptr p)
  94 {
  95     sym_nodeptr *x ;
  96     x = &(p->next) ;
  97     return( x ) ;
  98 }
  99
 100
 101 int
 102 sym_init() /* 2-19-90, initialize symbol table package */
 103 {
 104     create_ht( &symtab ) ;
 105     if (symtab == NULL)
 106     {
 107         fprintf(stderr,"init_sym(): could not create hash table") ;
 108         exit(1) ;
 109     }
 110     return(0) ;
 111 }
 112
 113 sym_nodeptr
 114 sym_add( char * name )
 115 {
 116 /*
 117     sym_nodeptr new_sym_node();
 118     char **node_name() ;
 119     sym_nodeptr *node_next() ;
 120 */
 121     return( symget( name, new_sym_node, node_name, node_next, symtab, 1 ) ) ;
 122 }
 123
 124 sym_nodeptr
 125 sym_get( char * name )
 126 {
 127 /*
 128     sym_nodeptr new_sym_node();
 129     char **node_name() ;
 130     sym_nodeptr *node_next() ;
 131 */
 132     return( symget( name, new_sym_node, node_name, node_next, symtab, 0 ) ) ;
 133 }
 134
 135 int
 136 show_entry(sym_nodeptr x)
 137 {
 138   int i ;
 139   if ( x == NULL ) return(0) ;
 140   printf("Symbol table entry:\n") ;
 141   printf("lexeme %s\n", x->name ) ;
 142   printf("   dim %s\n", (x->dim==1?"M":(x->dim==2?"N":"O")) ) ;
 143   printf(" ndims %d\n", x->ndims ) ;
 144   for ( i = 0 ; i < x->ndims && i < 7 ; i++ )
 145     printf(" dim %d -> %s\n",i,(x->dims[i]==1?"M":(x->dims[i]==2?"N":"O")) ) ;
 146   return(0) ;
 147 }
 148
 149 /* MEMORY LEAK !!!! -- this just abandons the old table and leaves on the heap. */
 150 /* The registry mechanism is not a long-running program and is not apt to
 151    run into memory problems.  Might want to fix this anyway, though, someday. */
 152 int
 153 sym_forget()
 154 {
 155   create_ht( &symtab ) ;
 156   if (symtab == NULL)
 157   {
 158       fprintf(stderr,"init_sym(): could not create hash table") ;
 159       exit(1) ;
 160   }
 161   return(0) ;
 162 }
 163