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
   7      prologue of the code and in all source listings of the code.
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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 "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