i can compile slang and newt with dietlibc now

1 files changed, 713 insertions, 0 deletions

diff --git a/mdk-stage1/slang/slassoc.c b/mdk-stage1/slang/slassoc.c
new file mode 100644
index 000000000..5997458d2
--- /dev/null
+++ b/mdk-stage1/slang/slassoc.c
@@ -0,0 +1,713 @@
+/* Copyright (c) 1998, 1999, 2001 John E. Davis
+ * This file is part of the S-Lang library.
+ *
+ * You may distribute under the terms of either the GNU General Public
+ * License or the Perl Artistic License.
+ */
+#include "slinclud.h"
+
+#define SL_APP_WANTS_FOREACH
+#include "slang.h"
+#include "_slang.h"
+
+#define USE_NEW_ANYTYPE_CODE 1
+
+typedef struct _SLAssoc_Array_Element_Type
+{
+   char *key;		       /* slstring */
+   struct _SLAssoc_Array_Element_Type *next;
+   SLang_Object_Type value;
+}
+_SLAssoc_Array_Element_Type;
+
+typedef struct
+{
+   _SLAssoc_Array_Element_Type *elements[SLASSOC_HASH_TABLE_SIZE];
+   SLang_Object_Type default_value;
+   unsigned int num_elements;
+#define HAS_DEFAULT_VALUE	1
+   unsigned int flags;
+   unsigned char type;
+}
+SLang_Assoc_Array_Type;
+
+#define USE_CACHED_STRING	1
+
+#if USE_CACHED_STRING 
+static char *Cached_String;
+static SLang_Object_Type *Cached_Obj;
+static SLang_Assoc_Array_Type *Cached_Array;
+#endif
+
+static SLang_Assoc_Array_Type *alloc_assoc_array (unsigned char type, int has_default_value)
+{
+   SLang_Assoc_Array_Type *a;
+
+   a = (SLang_Assoc_Array_Type *)SLmalloc (sizeof (SLang_Assoc_Array_Type));
+   if (a == NULL)
+     {
+	if (has_default_value)
+	  SLdo_pop_n (1);
+	return NULL;
+     }
+
+   memset ((char *) a, 0, sizeof (SLang_Assoc_Array_Type));
+   a->type = type;
+
+   if (has_default_value)
+     {
+	if (
+#if USE_NEW_ANYTYPE_CODE
+	    ((type != SLANG_ANY_TYPE) && (-1 == SLclass_typecast (type, 1, 1)))
+#else
+	    (-1 == SLclass_typecast (type, 1, 1))
+#endif
+	    || (-1 == SLang_pop (&a->default_value)))
+	  {
+	     SLfree ((char *) a);
+	     return NULL;
+	  }
+
+	a->flags |= HAS_DEFAULT_VALUE;
+     }
+   return a;
+}
+
+static void free_element (_SLAssoc_Array_Element_Type *e)
+{
+   if (e == NULL)
+     return;
+
+   SLang_free_object (&e->value);
+   SLang_free_slstring (e->key);
+#if USE_CACHED_STRING
+   if (e->key == Cached_String)
+     Cached_String = NULL;
+#endif
+   SLfree ((char *)e);
+}
+
+static void delete_assoc_array (SLang_Assoc_Array_Type *a)
+{
+   unsigned int i;
+
+   if (a == NULL) return;
+
+   for (i = 0; i < SLASSOC_HASH_TABLE_SIZE; i++)
+     {
+	_SLAssoc_Array_Element_Type *e;
+
+	e = a->elements[i];
+	while (e != NULL)
+	  {
+	     _SLAssoc_Array_Element_Type *next_e;
+
+	     next_e = e->next;
+	     free_element (e);
+	     e = next_e;
+	  }
+     }
+   if (a->flags & HAS_DEFAULT_VALUE)
+     SLang_free_object (&a->default_value);
+
+   SLfree ((char *) a);
+}
+
+_INLINE_
+static SLang_Object_Type *
+find_element (SLang_Assoc_Array_Type *a, char *str, unsigned long hash)
+{
+   unsigned int h;
+   _SLAssoc_Array_Element_Type *e;
+
+   h = (unsigned int) (hash % SLASSOC_HASH_TABLE_SIZE);
+   e = a->elements[h];
+
+   while (e != NULL)
+     {
+	if (str == e->key)       /* slstrings can be compared this way */
+	  {
+#if USE_CACHED_STRING
+	     Cached_String = str;
+	     Cached_Obj = &e->value;
+	     Cached_Array = a;
+#endif
+	     return &e->value;
+	  }
+
+	e = e->next;
+     }
+
+   return NULL;
+}
+
+static _SLAssoc_Array_Element_Type *
+create_element (SLang_Assoc_Array_Type *a, char *str, unsigned long hash)
+{
+   unsigned int h;
+   _SLAssoc_Array_Element_Type *e;
+
+   e = (_SLAssoc_Array_Element_Type *) SLmalloc (sizeof (_SLAssoc_Array_Element_Type));
+   if (e == NULL)
+     return NULL;
+
+   memset ((char *) e, 0, sizeof (_SLAssoc_Array_Element_Type));
+   h = (unsigned int) (hash % SLASSOC_HASH_TABLE_SIZE);
+
+   if (NULL == (str = _SLstring_dup_hashed_string (str, hash)))
+     {
+	SLfree ((char *) e);
+	return NULL;
+     }
+
+   e->key = str;
+   e->next = a->elements[h];
+   a->elements[h] = e;
+
+   a->num_elements += 1;
+#if USE_CACHED_STRING
+   Cached_String = str;
+   Cached_Obj = &e->value;
+   Cached_Array = a;
+#endif
+   return e;
+}
+
+static int store_object (SLang_Assoc_Array_Type *a, char *s, SLang_Object_Type *obj)
+{
+   unsigned long hash;
+   SLang_Object_Type *v;
+
+#if USE_CACHED_STRING
+   if ((s == Cached_String) && (a == Cached_Array))
+     {
+	v = Cached_Obj;
+	SLang_free_object (v);
+     }
+   else
+     {
+#endif
+	hash = _SLcompute_string_hash (s);
+	if (NULL != (v = find_element (a, s, hash)))
+	  SLang_free_object (v);
+	else
+	  {
+	     _SLAssoc_Array_Element_Type *e;
+	     
+	     e = create_element (a, s, hash);
+	     if (e == NULL)
+	       return -1;
+	     
+	     v = &e->value;
+	  }
+#if USE_CACHED_STRING
+     }
+#endif
+
+   *v = *obj;
+
+   return 0;
+}
+
+static void assoc_destroy (unsigned char type, VOID_STAR ptr)
+{
+   (void) type;
+   delete_assoc_array ((SLang_Assoc_Array_Type *) ptr);
+}
+
+static int pop_index (unsigned int num_indices,
+		      SLang_MMT_Type **mmt,
+		      SLang_Assoc_Array_Type **a,
+		      char **str)
+{
+   if (NULL == (*mmt = SLang_pop_mmt (SLANG_ASSOC_TYPE)))
+     {
+	*a = NULL;
+	*str = NULL;
+	return -1;
+     }
+
+   if ((num_indices != 1)
+       || (-1 == SLang_pop_slstring (str)))
+     {
+	SLang_verror (SL_NOT_IMPLEMENTED,
+		      "Assoc_Type arrays require a single string index");
+	SLang_free_mmt (*mmt);
+	*mmt = NULL;
+	*a = NULL;
+	*str = NULL;
+	return -1;
+     }
+
+   *a = (SLang_Assoc_Array_Type *) SLang_object_from_mmt (*mmt);
+   return 0;
+}
+
+static int assoc_aget (unsigned char type, unsigned int num_indices)
+{
+   SLang_MMT_Type *mmt;
+   char *str;
+   SLang_Assoc_Array_Type *a;
+   SLang_Object_Type *obj;
+   int ret;
+
+   (void) type;
+
+   if (-1 == pop_index (num_indices, &mmt, &a, &str))
+     return -1;
+
+#if USE_CACHED_STRING
+   if ((str == Cached_String) && (a == Cached_Array))
+     obj = Cached_Obj;
+   else
+#endif
+     obj = find_element (a, str, _SLcompute_string_hash (str));
+
+   if ((obj == NULL)
+       && (a->flags & HAS_DEFAULT_VALUE))
+     obj = &a->default_value;
+
+   if (obj == NULL)
+     {
+	SLang_verror (SL_INTRINSIC_ERROR,
+		      "No such element in Assoc Array: %s", str);
+	ret = -1;
+     }
+   else
+     {
+#if _SLANG_OPTIMIZE_FOR_SPEED
+	if (SLANG_CLASS_TYPE_SCALAR == _SLclass_Class_Type[obj->data_type])
+	  ret = SLang_push (obj);
+#endif
+	else
+	  ret = _SLpush_slang_obj (obj);
+     }
+
+   SLang_free_slstring (str);
+   SLang_free_mmt (mmt);
+   return ret;
+}
+
+static int assoc_aput (unsigned char type, unsigned int num_indices)
+{
+   SLang_MMT_Type *mmt;
+   char *str;
+   SLang_Assoc_Array_Type *a;
+   SLang_Object_Type obj;
+   int ret;
+
+   (void) type;
+
+   if (-1 == pop_index (num_indices, &mmt, &a, &str))
+     return -1;
+
+   ret = -1;
+
+   if (0 == SLang_pop (&obj))
+     {
+	if ((obj.data_type != a->type)
+#if USE_NEW_ANYTYPE_CODE
+	    && (a->type != SLANG_ANY_TYPE)
+#endif
+	    )
+	  {
+	     (void) SLang_push (&obj);
+	     if ((-1 == SLclass_typecast (a->type, 1, 1))
+		 || (-1 == SLang_pop (&obj)))
+	       goto the_return;
+	  }
+	
+	if (-1 == store_object (a, str, &obj))
+	  SLang_free_object (&obj);
+	else
+	  ret = 0;
+     }
+
+   the_return:
+   SLang_free_slstring (str);
+   SLang_free_mmt (mmt);
+   return ret;
+}
+
+static int assoc_anew (unsigned char type, unsigned int num_dims)
+{
+   SLang_MMT_Type *mmt;
+   SLang_Assoc_Array_Type *a;
+   int has_default_value;
+
+   has_default_value = 0;
+   switch (num_dims)
+     {
+      case 0:
+	type = SLANG_ANY_TYPE;
+	break;
+      case 2:
+	(void) SLreverse_stack (2);
+	has_default_value = 1;
+	/* drop */
+      case 1:
+	if (0 == _SLang_pop_datatype (&type))
+	  break;
+	num_dims--;
+	/* drop */
+      default:
+	SLdo_pop_n (num_dims);
+	SLang_verror (SL_SYNTAX_ERROR, "Usage: Assoc_Type [DataType_Type]");
+	return -1;
+     }
+
+   a = alloc_assoc_array (type, has_default_value);
+   if (a == NULL)
+     return -1;
+
+   if (NULL == (mmt = SLang_create_mmt (SLANG_ASSOC_TYPE, (VOID_STAR) a)))
+     {
+	delete_assoc_array (a);
+	return -1;
+     }
+
+   if (-1 == SLang_push_mmt (mmt))
+     {
+	SLang_free_mmt (mmt);
+	return -1;
+     }
+
+   return 0;
+}
+
+static void assoc_get_keys (SLang_Assoc_Array_Type *a)
+{
+   SLang_Array_Type *at;
+   int num;
+   unsigned int i, j;
+   char **data;
+
+   /* Note: If support for threads is added, then we need to modify this
+    * algorithm to prevent another thread from modifying the array.
+    * However, that should be handled in inner_interp.
+    */
+   num = a->num_elements;
+
+   if (NULL == (at = SLang_create_array (SLANG_STRING_TYPE, 0, NULL, &num, 1)))
+     return;
+
+   data = (char **)at->data;
+
+   i = 0;
+   for (j = 0; j < SLASSOC_HASH_TABLE_SIZE; j++)
+     {
+	_SLAssoc_Array_Element_Type *e;
+
+	e = a->elements[j];
+	while (e != NULL)
+	  {
+	     /* Next cannot fail because it is an slstring */
+	     data [i] = SLang_create_slstring (e->key);
+	     e = e->next;
+	     i++;
+	  }
+     }
+   (void) SLang_push_array (at, 1);
+}
+
+static int
+transfer_element (SLang_Class_Type *cl, VOID_STAR dest_data,
+		  SLang_Object_Type *obj)
+{
+   unsigned int sizeof_type;
+   VOID_STAR src_data;
+
+#if USE_NEW_ANYTYPE_CODE
+   if (cl->cl_data_type == SLANG_ANY_TYPE)
+     {
+	SLang_Any_Type *any;
+
+	if ((-1 == _SLpush_slang_obj (obj))
+	    || (-1 == SLang_pop_anytype (&any)))
+	  return -1;
+	
+	*(SLang_Any_Type **)dest_data = any;
+	return 0;
+     }
+#endif
+   /* Optimize for scalar */
+   if (cl->cl_class_type == SLANG_CLASS_TYPE_SCALAR)
+     {
+	sizeof_type = cl->cl_sizeof_type;
+	memcpy ((char *) dest_data, (char *)&obj->v, sizeof_type);
+	return 0;
+     }
+
+   src_data = _SLclass_get_ptr_to_value (cl, obj);
+
+   if (-1 == (*cl->cl_acopy) (cl->cl_data_type, src_data, dest_data))
+     return -1;
+
+   return 0;
+}
+
+static void assoc_get_values (SLang_Assoc_Array_Type *a)
+{
+   SLang_Array_Type *at;
+   int num;
+   unsigned int i, j;
+   char *dest_data;
+   unsigned char type;
+   SLang_Class_Type *cl;
+   unsigned int sizeof_type;
+
+   /* Note: If support for threads is added, then we need to modify this
+    * algorithm to prevent another thread from modifying the array.
+    * However, that should be handled in inner_interp.
+    */
+   num = a->num_elements;
+   type = a->type;
+
+   cl = _SLclass_get_class (type);
+   sizeof_type = cl->cl_sizeof_type;
+
+   if (NULL == (at = SLang_create_array (type, 0, NULL, &num, 1)))
+     return;
+
+   dest_data = (char *)at->data;
+
+   i = 0;
+   for (j = 0; j < SLASSOC_HASH_TABLE_SIZE; j++)
+     {
+	_SLAssoc_Array_Element_Type *e;
+
+	e = a->elements[j];
+	while (e != NULL)
+	  {
+	     if (-1 == transfer_element (cl, (VOID_STAR) dest_data, &e->value))
+	       {
+		  SLang_free_array (at);
+		  return;
+	       }
+
+	     dest_data += sizeof_type;
+	     e = e->next;
+	     i++;
+	  }
+     }
+   (void) SLang_push_array (at, 1);
+}
+
+static int assoc_key_exists (SLang_Assoc_Array_Type *a, char *key)
+{
+   return (NULL != find_element (a, key, _SLcompute_string_hash (key)));
+}
+
+static void assoc_delete_key (SLang_Assoc_Array_Type *a, char *key)
+{
+   unsigned int h;
+   _SLAssoc_Array_Element_Type *v, *v0;
+
+   h = (unsigned int) (_SLcompute_string_hash (key) % SLASSOC_HASH_TABLE_SIZE);
+
+   v0 = NULL;
+   v = a->elements[h];
+   while (v != NULL)
+     {
+	if (v->key == key)
+	  {
+	     if (v0 != NULL)
+	       v0->next = v->next;
+	     else
+	       a->elements[h] = v->next;
+
+	     free_element (v);
+	     a->num_elements -= 1;
+	     return;
+	  }
+	v0 = v;
+	v = v->next;
+     }
+
+   /* No such element.  Let it pass with no error. */
+}
+
+#define A SLANG_ASSOC_TYPE
+#define S SLANG_STRING_TYPE
+static SLang_Intrin_Fun_Type Assoc_Table [] =
+{
+   MAKE_INTRINSIC_1("assoc_get_keys", assoc_get_keys, SLANG_VOID_TYPE, A),
+   MAKE_INTRINSIC_1("assoc_get_values", assoc_get_values, SLANG_VOID_TYPE, A),
+   MAKE_INTRINSIC_2("assoc_key_exists", assoc_key_exists, SLANG_INT_TYPE, A, S),
+   MAKE_INTRINSIC_2("assoc_delete_key", assoc_delete_key, SLANG_VOID_TYPE, A, S),
+
+   SLANG_END_INTRIN_FUN_TABLE
+};
+#undef A
+#undef S
+
+static int assoc_length (unsigned char type, VOID_STAR v, unsigned int *len)
+{
+   SLang_Assoc_Array_Type *a;
+
+   (void) type;
+   a = (SLang_Assoc_Array_Type *) SLang_object_from_mmt (*(SLang_MMT_Type **)v);
+   *len = a->num_elements;
+   return 0;
+}
+
+struct _SLang_Foreach_Context_Type
+{
+   SLang_MMT_Type *mmt;
+   SLang_Assoc_Array_Type *a;
+   unsigned int this_hash_index;
+   unsigned int next_same_hash_index;
+#define CTX_WRITE_KEYS		1
+#define CTX_WRITE_VALUES	2
+   unsigned char flags;
+};
+
+static SLang_Foreach_Context_Type *
+cl_foreach_open (unsigned char type, unsigned int num)
+{
+   SLang_Foreach_Context_Type *c;
+   unsigned char flags;
+   SLang_MMT_Type *mmt;
+
+   (void) type;
+
+   if (NULL == (mmt = SLang_pop_mmt (SLANG_ASSOC_TYPE)))
+     return NULL;
+
+   flags = 0;
+
+   while (num--)
+     {
+	char *s;
+
+	if (-1 == SLang_pop_slstring (&s))
+	  {
+	     SLang_free_mmt (mmt);
+	     return NULL;
+	  }
+
+	if (0 == strcmp (s, "keys"))
+	  flags |= CTX_WRITE_KEYS;
+	else if (0 == strcmp (s, "values"))
+	  flags |= CTX_WRITE_VALUES;
+	else
+	  {
+	     SLang_verror (SL_NOT_IMPLEMENTED,
+			   "using '%s' not supported by SLassoc_Type",
+			   s);
+	     SLang_free_slstring (s);
+	     SLang_free_mmt (mmt);
+	     return NULL;
+	  }
+
+	SLang_free_slstring (s);
+     }
+
+   if (NULL == (c = (SLang_Foreach_Context_Type *) SLmalloc (sizeof (SLang_Foreach_Context_Type))))
+     {
+	SLang_free_mmt (mmt);
+	return NULL;
+     }
+
+   memset ((char *) c, 0, sizeof (SLang_Foreach_Context_Type));
+
+   if (flags == 0) flags = CTX_WRITE_VALUES|CTX_WRITE_KEYS;
+
+   c->flags = flags;
+   c->mmt = mmt;
+   c->a = (SLang_Assoc_Array_Type *) SLang_object_from_mmt (mmt);
+
+   return c;
+}
+
+static void cl_foreach_close (unsigned char type, SLang_Foreach_Context_Type *c)
+{
+   (void) type;
+   if (c == NULL) return;
+   SLang_free_mmt (c->mmt);
+   SLfree ((char *) c);
+}
+
+static int cl_foreach (unsigned char type, SLang_Foreach_Context_Type *c)
+{
+   SLang_Assoc_Array_Type *a;
+   _SLAssoc_Array_Element_Type *e;
+   unsigned int i, j;
+
+   (void) type;
+
+   if (c == NULL)
+     return -1;
+
+   a = c->a;
+
+   i = c->this_hash_index;
+   if (i >= SLASSOC_HASH_TABLE_SIZE)
+     return 0;
+
+   e = a->elements[i];
+
+   j = c->next_same_hash_index;
+   c->next_same_hash_index = j + 1;
+
+   while ((j > 0) && (e != NULL))
+     {
+	j--;
+	e = e->next;
+     }
+
+   if (e == NULL)
+     {
+	do
+	  {
+	     i++;
+	     if (i >= SLASSOC_HASH_TABLE_SIZE)
+	       return 0;		       /* no more */
+	  }
+	while (a->elements [i] == NULL);
+
+	e = a->elements[i];
+	c->this_hash_index = i;
+	c->next_same_hash_index = 1;
+     }
+
+   if ((c->flags & CTX_WRITE_KEYS)
+       && (-1 == SLang_push_string (e->key)))
+     return -1;
+
+   if ((c->flags & CTX_WRITE_VALUES)
+       && (-1 == _SLpush_slang_obj (&e->value)))
+     return -1;
+
+   /* keep going */
+   return 1;
+}
+
+int SLang_init_slassoc (void)
+{
+   SLang_Class_Type *cl;
+
+   if (SLclass_is_class_defined (SLANG_ASSOC_TYPE))
+     return 0;
+
+   if (NULL == (cl = SLclass_allocate_class ("Assoc_Type")))
+     return -1;
+
+   (void) SLclass_set_destroy_function (cl, assoc_destroy);
+   (void) SLclass_set_aput_function (cl, assoc_aput);
+   (void) SLclass_set_aget_function (cl, assoc_aget);
+   (void) SLclass_set_anew_function (cl, assoc_anew);
+   cl->cl_length = assoc_length;
+   cl->cl_foreach_open = cl_foreach_open;
+   cl->cl_foreach_close = cl_foreach_close;
+   cl->cl_foreach = cl_foreach;
+
+   if (-1 == SLclass_register_class (cl, SLANG_ASSOC_TYPE, sizeof (SLang_Assoc_Array_Type), SLANG_CLASS_TYPE_MMT))
+     return -1;
+
+   if (-1 == SLadd_intrin_fun_table (Assoc_Table, "__SLASSOC__"))
+     return -1;
+
+   return 0;
+}
+