2008-02-22 18:57:27 +00:00
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/*********************************************
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File: core_tries.h
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Author: Ricardo Rocha
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Comments: Tries core module for Yap Prolog
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version: $ID$
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*********************************************/
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/* -------------------------------------- */
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/* Yap Tagging Scheme */
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/* -------------------------------------- */
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#include "config.h"
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#if SIZEOF_INT_P==4
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#define TAG_LOW_BITS_32 /* 'Tags_32LowTag.h' tagging scheme */
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2011-05-30 15:30:02 +01:00
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#define SIZE_FLOAT_AS_TERM 2
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2008-02-22 18:57:27 +00:00
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#elif SIZEOF_INT_P==8
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#define TAG_64BITS /* 'Tags_64bits.h' tagging scheme */
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2011-05-30 15:30:02 +01:00
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#define SIZE_FLOAT_AS_TERM 1
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2008-02-22 18:57:27 +00:00
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#else
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#error Unknown tagging scheme
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#endif /* YAP_SCHEME */
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/* --------------------------- */
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/* Defines */
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/* --------------------------- */
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#ifdef TAG_LOW_BITS_32
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2010-03-31 18:36:13 +01:00
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#define ApplTag 1 /* 0x01 */
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2008-02-22 18:57:27 +00:00
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#else /* TAG_64BITS */
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2010-03-31 18:36:13 +01:00
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#define ApplTag 5 /* 0x05 */
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2008-02-22 18:57:27 +00:00
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#endif /* TAG_SCHEME */
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2010-03-31 18:36:13 +01:00
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#define PairInitTag 3 /* 0x03 */
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#define PairEndEmptyTag 19 /* 0x13 */
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#define PairEndTermTag 99 /* 0x63 */
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#define CommaInitTag 35 /* 0x23 */
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#define CommaEndTag 51 /* 0x33 */
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#define FloatInitTag 67 /* 0x43 */
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#define FloatEndTag 83 /* 0x53 */
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2008-02-22 18:57:27 +00:00
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#define TRIE_MODE_STANDARD 0
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#define TRIE_MODE_REVERSE 1
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2010-07-19 11:29:13 +01:00
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#define TRIE_MODE_MINIMAL 2
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#define TRIE_MODE_REVMIN TRIE_MODE_REVERSE || TRIE_MODE_MINIMAL //3
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2008-02-22 18:57:27 +00:00
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#define TRIE_PRINT_NORMAL 0
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#define TRIE_PRINT_FLOAT 1
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#define TRIE_PRINT_FLOAT2 2
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#define TRIE_PRINT_FLOAT_END 3
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2016-08-26 21:23:37 +01:00
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#define BASE_AUXILIARY_TERM_STACK_SIZE 100000
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2008-02-22 18:57:27 +00:00
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/* --------------------------- */
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/* Structs */
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/* --------------------------- */
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typedef struct trie_engine {
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struct trie_node *first_trie;
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/* in use */
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YAP_Int memory_in_use;
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YAP_Int tries_in_use;
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YAP_Int entries_in_use;
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YAP_Int nodes_in_use;
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/* max used */
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YAP_Int memory_max_used;
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YAP_Int tries_max_used;
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YAP_Int entries_max_used;
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YAP_Int nodes_max_used;
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} *TrEngine;
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#define TrEngine_trie(X) ((X)->first_trie)
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#define TrEngine_memory(X) ((X)->memory_in_use)
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#define TrEngine_tries(X) ((X)->tries_in_use)
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#define TrEngine_entries(X) ((X)->entries_in_use)
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#define TrEngine_nodes(X) ((X)->nodes_in_use)
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#define TrEngine_memory_max(X) ((X)->memory_max_used)
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#define TrEngine_tries_max(X) ((X)->tries_max_used)
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#define TrEngine_entries_max(X) ((X)->entries_max_used)
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#define TrEngine_nodes_max(X) ((X)->nodes_max_used)
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typedef struct trie_node {
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struct trie_node *parent;
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struct trie_node *child;
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struct trie_node *next;
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struct trie_node *previous;
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YAP_Term entry;
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} *TrNode;
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#define TrNode_parent(X) ((X)->parent)
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#define TrNode_child(X) ((X)->child)
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#define TrNode_next(X) ((X)->next)
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#define TrNode_previous(X) ((X)->previous)
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#define TrNode_entry(X) ((X)->entry)
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typedef struct trie_hash {
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struct trie_node *parent; /* for compatibility with the trie_node data structure */
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struct trie_node **buckets;
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int number_of_buckets;
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int number_of_nodes;
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} *TrHash;
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#define TrHash_mark(X) ((X)->parent)
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#define TrHash_buckets(X) ((X)->buckets)
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#define TrHash_bucket(X,N) ((X)->buckets + N)
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#define TrHash_num_buckets(X) ((X)->number_of_buckets)
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#define TrHash_seed(X) ((X)->number_of_buckets - 1)
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#define TrHash_num_nodes(X) ((X)->number_of_nodes)
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#define TYPE_TR_ENGINE struct trie_engine
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#define TYPE_TR_NODE struct trie_node
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#define TYPE_TR_HASH struct trie_hash
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#define SIZEOF_TR_ENGINE sizeof(TYPE_TR_ENGINE)
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#define SIZEOF_TR_NODE sizeof(TYPE_TR_NODE)
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#define SIZEOF_TR_HASH sizeof(TYPE_TR_HASH)
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#define SIZEOF_TR_BUCKET sizeof(TYPE_TR_NODE *)
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2014-10-30 07:41:30 +00:00
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#define AS_TR_NODE_NEXT(ADDR) (TrNode)((YAP_UInt)(ADDR) - 2 * sizeof(struct trie_node *))
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2008-02-22 18:57:27 +00:00
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/* --------------------------- */
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/* Macros */
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/* --------------------------- */
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2014-10-30 07:41:30 +00:00
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#define TAG_ADDR(ADDR) ((YAP_UInt)(ADDR) | 0x1)
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#define UNTAG_ADDR(ADDR) ((YAP_UInt)(ADDR) & ~(0x1))
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2008-02-22 18:57:27 +00:00
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#define PUT_DATA_IN_LEAF_TRIE_NODE(TR_NODE, DATA) TrNode_child(TR_NODE) = (TrNode)TAG_ADDR(DATA)
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#define GET_DATA_FROM_LEAF_TRIE_NODE(TR_NODE) UNTAG_ADDR(TrNode_child(TR_NODE))
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#define MARK_AS_LEAF_TRIE_NODE(TR_NODE) PUT_DATA_IN_LEAF_TRIE_NODE(TR_NODE, TrNode_child(TR_NODE))
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2014-10-30 07:41:30 +00:00
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#define IS_LEAF_TRIE_NODE(TR_NODE) ((YAP_UInt)(TrNode_child(TR_NODE)) & 0x1)
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2008-02-22 18:57:27 +00:00
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#define IsTrieVar(TERM, STACK, STACK_BASE) ((YAP_Term *)(TERM) > STACK && (YAP_Term *)(TERM) <= STACK_BASE)
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#define MkTrieVar(INDEX) ((INDEX) << 4)
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#define TrieVarIndex(TERM) ((TERM) >> 4)
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2016-08-26 21:23:37 +01:00
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#define BASE_HASH_BUCKETS 256
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#define MAX_NODES_PER_TRIE_LEVEL 32
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2008-02-22 18:57:27 +00:00
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#define MAX_NODES_PER_BUCKET (MAX_NODES_PER_TRIE_LEVEL / 2)
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#define HASH_TERM(TERM, SEED) (((TERM) >> 4) & (SEED))
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#define IS_HASH_NODE(NODE) (TrHash_mark(NODE) == NULL)
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2016-08-26 21:23:37 +01:00
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#define BASE_SAVE_MARK 10000 /* could lead to errors if the number of different variables in a term is greater than it */
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2008-02-22 18:57:27 +00:00
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#define HASH_SAVE_MARK ((YAP_Term) MkTrieVar(BASE_SAVE_MARK))
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#define ATOM_SAVE_MARK ((YAP_Term) MkTrieVar(BASE_SAVE_MARK + 1))
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#define FUNCTOR_SAVE_MARK ((YAP_Term) MkTrieVar(BASE_SAVE_MARK + 2))
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#define FLOAT_SAVE_MARK ((YAP_Term) MkTrieVar(BASE_SAVE_MARK + 3))
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#define STACK_NOT_EMPTY(STACK, STACK_BASE) STACK != STACK_BASE
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#define POP_UP(STACK) *--STACK
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#define POP_DOWN(STACK) *++STACK
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#define PUSH_UP(STACK, ITEM, STACK_TOP) \
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{ if (STACK < STACK_TOP) { \
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fprintf(stderr, "**************************************\n"); \
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fprintf(stderr, " Tries core module: term stack full\n"); \
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fprintf(stderr, "**************************************\n"); \
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} \
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*STACK = (YAP_Term)(ITEM); \
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STACK--; \
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}
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#define PUSH_DOWN(STACK, ITEM, STACK_TOP) \
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{ if (STACK > STACK_TOP) { \
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fprintf(stderr, "**************************************\n"); \
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2016-08-26 21:23:37 +01:00
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fprintf(stderr, " Tries core module: term stack empty\n"); \
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2008-02-22 18:57:27 +00:00
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fprintf(stderr, "**************************************\n"); \
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} \
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*STACK = (YAP_Term)(ITEM); \
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STACK++; \
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}
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#define new_struct(STR, STR_TYPE, STR_SIZE) \
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STR = (STR_TYPE *) YAP_AllocSpaceFromYap(STR_SIZE)
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#define new_trie_engine(TR_ENGINE) \
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{ new_struct(TR_ENGINE, TYPE_TR_ENGINE, SIZEOF_TR_ENGINE); \
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TrEngine_trie(TR_ENGINE) = NULL; \
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TrEngine_memory(TR_ENGINE) = 0; \
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TrEngine_tries(TR_ENGINE) = 0; \
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TrEngine_entries(TR_ENGINE) = 0; \
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TrEngine_nodes(TR_ENGINE) = 0; \
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TrEngine_memory_max(TR_ENGINE) = 0; \
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TrEngine_tries_max(TR_ENGINE) = 0; \
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TrEngine_entries_max(TR_ENGINE) = 0; \
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TrEngine_nodes_max(TR_ENGINE) = 0; \
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}
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#define new_trie_node(TR_NODE, ENTRY, PARENT, CHILD, NEXT, PREVIOUS) \
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{ new_struct(TR_NODE, TYPE_TR_NODE, SIZEOF_TR_NODE); \
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TrNode_entry(TR_NODE) = ENTRY; \
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TrNode_parent(TR_NODE) = PARENT; \
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TrNode_child(TR_NODE) = CHILD; \
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TrNode_next(TR_NODE) = NEXT; \
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TrNode_previous(TR_NODE) = PREVIOUS; \
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INCREMENT_NODES(CURRENT_TRIE_ENGINE); \
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INCREMENT_MEMORY(CURRENT_TRIE_ENGINE, SIZEOF_TR_NODE); \
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}
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#define new_trie_hash(TR_HASH, NUM_NODES, NUM_BUCKETS) \
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{ new_struct(TR_HASH, TYPE_TR_HASH, SIZEOF_TR_HASH); \
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TrHash_mark(TR_HASH) = NULL; \
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TrHash_num_buckets(TR_HASH) = NUM_BUCKETS; \
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new_hash_buckets(TR_HASH, NUM_BUCKETS); \
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TrHash_num_nodes(TR_HASH) = NUM_NODES; \
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INCREMENT_MEMORY(CURRENT_TRIE_ENGINE, SIZEOF_TR_HASH); \
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}
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#define new_hash_buckets(TR_HASH, NUM_BUCKETS) \
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{ int i; void **ptr; \
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new_struct(ptr, void *, NUM_BUCKETS * sizeof(void *)); \
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TrHash_buckets(TR_HASH) = (TYPE_TR_NODE **) ptr; \
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for (i = NUM_BUCKETS; i != 0; i--) \
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*ptr++ = NULL; \
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INCREMENT_MEMORY(CURRENT_TRIE_ENGINE, (NUM_BUCKETS) * SIZEOF_TR_BUCKET); \
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}
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#define expand_auxiliary_term_stack() \
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{ YAP_Term *aux_stack; \
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YAP_Int aux_size = CURRENT_AUXILIARY_TERM_STACK_SIZE * sizeof(YAP_Term); \
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new_struct(aux_stack, YAP_Term, aux_size * 2); \
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2018-06-30 14:33:32 +01:00
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memmove(aux_stack, AUXILIARY_TERM_STACK, aux_size); \
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2008-02-22 18:57:27 +00:00
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free_struct(AUXILIARY_TERM_STACK); \
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AUXILIARY_TERM_STACK = aux_stack; \
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CURRENT_AUXILIARY_TERM_STACK_SIZE *= 2; \
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}
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#define free_struct(STR) \
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YAP_FreeSpaceFromYap((char *) (STR))
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#define free_trie_node(STR) \
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{ free_struct(STR); \
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DECREMENT_NODES(CURRENT_TRIE_ENGINE); \
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DECREMENT_MEMORY(CURRENT_TRIE_ENGINE, SIZEOF_TR_NODE); \
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}
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#define free_trie_hash(STR) \
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{ free_struct(STR); \
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DECREMENT_MEMORY(CURRENT_TRIE_ENGINE, SIZEOF_TR_HASH); \
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}
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#define free_hash_buckets(STR, NUM_BUCKETS) \
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{ free_struct(STR); \
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DECREMENT_MEMORY(CURRENT_TRIE_ENGINE, (NUM_BUCKETS) * SIZEOF_TR_BUCKET); \
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}
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#define INCREMENT_MEMORY(TR_ENGINE, SIZE) \
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{ TrEngine_memory(TR_ENGINE) += SIZE; \
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if (TrEngine_memory(TR_ENGINE) > TrEngine_memory_max(TR_ENGINE)) \
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TrEngine_memory_max(TR_ENGINE) = TrEngine_memory(TR_ENGINE); \
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}
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#define INCREMENT_TRIES(TR_ENGINE) \
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{ TrEngine_tries(TR_ENGINE)++; \
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if (TrEngine_tries(TR_ENGINE) > TrEngine_tries_max(TR_ENGINE)) \
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TrEngine_tries_max(TR_ENGINE) = TrEngine_tries(TR_ENGINE); \
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}
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#define INCREMENT_ENTRIES(TR_ENGINE) \
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{ TrEngine_entries(TR_ENGINE)++; \
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if (TrEngine_entries(TR_ENGINE) > TrEngine_entries_max(TR_ENGINE)) \
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TrEngine_entries_max(TR_ENGINE) = TrEngine_entries(TR_ENGINE); \
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}
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#define INCREMENT_NODES(TR_ENGINE) \
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{ TrEngine_nodes(TR_ENGINE)++; \
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if (TrEngine_nodes(TR_ENGINE) > TrEngine_nodes_max(TR_ENGINE)) \
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TrEngine_nodes_max(TR_ENGINE) = TrEngine_nodes(TR_ENGINE); \
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}
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#define DECREMENT_MEMORY(TR_ENGINE, SIZE) \
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TrEngine_memory(TR_ENGINE) -= SIZE
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#define DECREMENT_TRIES(TR_ENGINE) \
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TrEngine_tries(TR_ENGINE)--
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#define DECREMENT_ENTRIES(TR_ENGINE) \
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TrEngine_entries(TR_ENGINE)--
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#define DECREMENT_NODES(TR_ENGINE) \
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TrEngine_nodes(TR_ENGINE)--
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2010-07-19 11:29:13 +01:00
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#define IS_FUNCTOR_NODE(N) (((ApplTag & TrNode_entry(N)) == ApplTag) && \
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(TrNode_entry(N) != PairInitTag) && \
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(TrNode_entry(N) != PairEndEmptyTag) && \
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(TrNode_entry(N) != PairEndTermTag))
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2008-02-22 18:57:27 +00:00
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/* --------------------------- */
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/* API */
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/* --------------------------- */
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2013-11-04 01:07:44 +00:00
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TrEngine core_trie_init_module(void);
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TrNode core_trie_open(TrEngine engine);
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void core_trie_close(TrEngine engine, TrNode node, void (*destruct_function)(TrNode));
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void core_trie_close_all(TrEngine engine, void (*destruct_function)(TrNode));
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void core_trie_set_mode(YAP_Int mode);
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YAP_Int core_trie_get_mode(void);
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TrNode core_trie_put_entry(TrEngine engine, TrNode node, YAP_Term entry, YAP_Int *depth);
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TrNode core_trie_check_entry(TrNode node, YAP_Term entry);
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YAP_Term core_trie_get_entry(TrNode node);
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void core_trie_remove_entry(TrEngine engine, TrNode node, void (*destruct_function)(TrNode));
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void core_trie_remove_subtree(TrEngine engine, TrNode node, void (*destruct_function)(TrNode));
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void core_trie_add(TrNode node_dest, TrNode node_source, void (*add_function)(TrNode, TrNode));
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void core_trie_join(TrEngine engine, TrNode node_dest, TrNode node_source, void (*add_function)(TrNode, TrNode), void (*copy_function)(TrNode, TrNode));
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void core_trie_intersect(TrEngine engine, TrNode node_dest, TrNode node_source, void (*add_function)(TrNode, TrNode), void (*destruct_function)(TrNode));
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YAP_Int core_trie_count_join(TrNode node1, TrNode node2);
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YAP_Int core_trie_count_intersect(TrNode node1, TrNode node2);
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void core_trie_save(TrNode node, FILE *file, void (*save_function)(TrNode, FILE *));
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TrNode core_trie_load(TrEngine engine, FILE *file, void (*load_function)(TrNode, YAP_Int, FILE *));
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void core_trie_stats(TrEngine engine, YAP_Int *memory, YAP_Int *tries, YAP_Int *entries, YAP_Int *nodes);
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void core_trie_max_stats(TrEngine engine, YAP_Int *memory, YAP_Int *tries, YAP_Int *entries, YAP_Int *nodes);
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void core_trie_usage(TrNode node, YAP_Int *entries, YAP_Int *nodes, YAP_Int *virtual_nodes);
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void core_trie_print(TrNode node, void (*print_function)(TrNode));
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void core_disable_hash_table(void);
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void core_enable_hash_table(void);
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YAP_Term core_trie_to_list(TrNode node);
|
2010-07-19 11:29:13 +01:00
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#include "core_dbtries.h"
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