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lua
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This commit is contained in:
Waldemar Celes 1994-08-05 16:25:09 -03:00
parent 5034be6635
commit 088cc3f380
2 changed files with 18 additions and 2 deletions
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17
hash.c
View File

@ -4,7 +4,7 @@
** Luiz Henrique de Figueiredo - 17 Aug 90
*/
char *rcs_hash="$Id: hash.c,v 2.1 1994/04/20 22:07:57 celes Exp celes $";
char *rcs_hash="$Id: hash.c,v 2.2 1994/07/19 21:27:18 celes Exp celes $";
#include <string.h>
#include <stdlib.h>
@ -212,6 +212,21 @@ Hash *lua_createarray (int nhash)
}
/*
** If the hash node is present, return its pointer, otherwise return a
** static nil object
*/
Object *lua_hashget (Hash *t, Object *ref)
{
static Object nil_obj = {T_NIL, {NULL}};
Node *n;
int h = head (t, ref);
if (h < 0) return NULL;
n = present(t, ref, h);
if (n == NULL) return &nil_obj;
else return &n->val;
}
/*
** If the hash node is present, return its pointer, otherwise create a new
** node for the given reference and also return its pointer.

3
hash.h
View File

@ -2,7 +2,7 @@
** hash.h
** hash manager for lua
** Luiz Henrique de Figueiredo - 17 Aug 90
** $Id: hash.h,v 1.1 1993/12/17 18:41:19 celes Exp celes $
** $Id: hash.h,v 2.1 1994/04/20 22:07:57 celes Exp celes $
*/
#ifndef hash_h
@ -26,6 +26,7 @@ typedef struct Hash
Hash *lua_createarray (int nhash);
void lua_hashmark (Hash *h);
void lua_hashcollector (void);
Object *lua_hashget (Hash *t, Object *ref);
Object *lua_hashdefine (Hash *t, Object *ref);
void lua_next (void);