source: trunk/WRF.COMMON/WRFV2/tools/sym.c @ 3547

/***********************************************************************
     
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       (c) 1977  University of Chicago
     
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             it must include the copyright notice and Government       
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     This software was authored by:
     
     Argonne National Laboratory
     J. Michalakes: (630) 252-6646; email: michalak@mcs.anl.gov
     Mathematics and Computer Science Division
     Argonne National Laboratory, Argonne, IL  60439
     
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                      GOVERNMENT LICENSE AND DISCLAIMER
     
     This computer code material was prepared, in part, as an account 
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***************************************************************************/
/* sym.c

    Implementation dependent routines for using symtab_gen.c
    in N32 .

*/

#include <stdio.h>
#include "sym.h"

extern sym_nodeptr symget() ;

static char ** symtab ;  /* 2-19-90 */

int
sym_init() /* 2-19-90, initialize symbol table package */
{
    create_ht( &symtab ) ;
    if (symtab == NULL) 
    {
        fprintf(stderr,"init_sym(): could not create hash table") ;
        exit(1) ;
    }
    return(0) ;
}

sym_nodeptr
sym_add( name )
char * name ;
{
    sym_nodeptr new_sym_node(); 
    char **node_name() ;
    sym_nodeptr *node_next() ;
    return( symget( name, new_sym_node, node_name, node_next, symtab, 1 ) ) ;
}

sym_nodeptr
sym_get( name )
char * name ;
{
    sym_nodeptr new_sym_node(); 
    char **node_name() ;
    sym_nodeptr *node_next() ;
    return( symget( name, new_sym_node, node_name, node_next, symtab, 0 ) ) ;
}

sym_nodeptr
new_sym_node()
{
    void * malloc() ;
    sym_nodeptr p ;
    p = (sym_nodeptr) malloc( sizeof( struct sym_node ) ) ;
    p->name = NULL ;
    p->next = NULL ;

    return( p ) ;
}

char **
node_name(p)
sym_nodeptr p ;
{
    char ** x ;
    x = &(p->name) ;
    return( x ) ;
}

sym_nodeptr *
node_next(p)
sym_nodeptr p ;
{
    sym_nodeptr *x ;
    x = &(p->next) ;
    return( x ) ;
}

int
show_entry(x)
sym_nodeptr x ;
{
  int i ;
  if ( x == NULL ) return(0) ;
  printf("Symbol table entry:\n") ;
  printf("lexeme %s\n", x->name ) ;
  printf("   dim %s\n", (x->dim==1?"M":(x->dim==2?"N":"O")) ) ;
  printf(" ndims %d\n", x->ndims ) ;
  for ( i = 0 ; i < x->ndims && i < 7 ; i++ )
    printf(" dim %d -> %s\n",i,(x->dims[i]==1?"M":(x->dims[i]==2?"N":"O")) ) ;
  return(0) ;
}

/* MEMORY LEAK !!!! -- this just abandons the old table and leaves on the heap. */
/* The registry mechanism is not a long-running program and is not apt to 
   run into memory problems.  Might want to fix this anyway, though, someday. */
int
sym_forget() 
{
  create_ht( &symtab ) ;
  if (symtab == NULL)
  {
      fprintf(stderr,"init_sym(): could not create hash table") ;
      exit(1) ;
  }
  return(0) ;
}