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This commit is contained in:
Vítor Santos Costa 2015-01-26 07:36:54 +00:00
parent 9bc20918c9
commit 4076d24022
1 changed files with 77 additions and 0 deletions
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77
OPTYap/tab.rational.h Normal file
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/************************************************************************
** **
** The YapTab/YapOr/OPTYap systems **
** **
** YapTab extends the Yap Prolog engine to support sequential tabling **
** YapOr extends the Yap Prolog engine to support or-parallelism **
** OPTYap extends the Yap Prolog engine to support or-parallel tabling **
** **
** **
** Yap Prolog was developed at University of Porto, Portugal **
** **
************************************************************************/
#define RationalMark 7 //0m0...111
#define IsRationalTerm(TERM) ((int) TERM == 7)
typedef struct term_array {
void* *terms;
void* *nodes;
size_t length;
size_t capacity;
} term_array;
void term_array_init(term_array *array, int capacity);
void term_array_free(term_array *array);
void term_array_push(term_array *array, void* t, void* n);
void* term_array_member(term_array array, void* t);
void term_array_init(term_array *array, int capacity) {
array->length = 0;
array->terms = malloc(capacity * sizeof(void*));
if (array->terms != NULL) {
array->capacity = capacity;
} else
Yap_Error(RESOURCE_ERROR_MEMORY, TermNil, "Out of memory."); // Handle out-of-memory
array->capacity = capacity;
array->nodes = malloc(capacity * sizeof(void*));
if (array->nodes == NULL)
Yap_Error(RESOURCE_ERROR_MEMORY, TermNil, "Out of memory."); // Handle out-of-memory
}
void term_array_free(term_array *array) {
free(array->terms);
free(array->nodes);
array->terms = NULL;
array->nodes = NULL;
array->length = 0;
array->capacity = 0;
}
void term_array_push(term_array *array, void* t, void* n) {
if (array->length == array->capacity) {
int new_capacity = array->capacity * 2;
void *new_terms = realloc(array->terms, new_capacity * sizeof(void*));
if (new_terms != NULL) {
array->terms = new_terms;
} else
Yap_Error(RESOURCE_ERROR_MEMORY, TermNil, "Out of memory."); // Handle out-of-memory
void *new_nodes = realloc(array->nodes, new_capacity * sizeof(void *));
if (new_nodes != NULL) {
array->nodes = new_nodes;
} else
Yap_Error(RESOURCE_ERROR_MEMORY, TermNil, "Out of memory."); // Handle out-of-memory
array->capacity = new_capacity;
}
array->terms[array->length] = t;
array->nodes[array->length] = n;
array->length++;
}
void* term_array_member(term_array array, void* t) {
int i;
for (i = 0; i < array.length; i++)
if (array.terms[i] == t) return array.nodes[i];
return NULL;
}