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yap-6.3/library/Tries/tries.c
ricroc d9b7100f37 tries library module 
git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@1877 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
2007-05-02 15:31:23 +00:00

506 lines
12 KiB
C
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/****************************************
File: tries.c
Author: Ricardo Rocha
Comments: Tries module for Yap Prolog
version: $ID$
****************************************/
/* -------------------------- */
/* Includes */
/* -------------------------- */
#include <YapInterface.h>
#include <string.h>
#include <stdio.h>
#include "base_tries.h"
/* -------------------------- */
/* Local Variables */
/* -------------------------- */
static TrEngine TRIE_ENGINE;
/* -------------------------- */
/* Procedures */
/* -------------------------- */
void init_tries(void);
static int p_trie_open(void);
static int p_trie_close(void);
static int p_trie_close_all(void);
static int p_trie_mode(void);
static int p_trie_put_entry(void);
static int p_trie_check_entry(void);
static int p_trie_get_entry(void);
static int p_trie_remove_entry(void);
static int p_trie_remove_subtree(void);
static int p_trie_save(void);
static int p_trie_load(void);
static int p_trie_stats(void);
static int p_trie_max_stats(void);
static int p_trie_usage(void);
static int p_trie_print(void);
/* backwards compatibility */
static int p_open_trie(void);
static int p_close_trie(void);
static int p_close_all_tries(void);
static int p_put_trie_entry(void);
static int p_get_trie_entry(void);
static int p_remove_trie_entry(void);
static int p_print_trie(void);
/* -------------------------- */
/* Module Init Procedure */
/* -------------------------- */
void init_tries(void) {
TRIE_ENGINE = trie_init_module();
YAP_UserCPredicate("trie_open", p_trie_open, 1);
YAP_UserCPredicate("trie_close", p_trie_close, 1);
YAP_UserCPredicate("trie_close_all", p_trie_close_all, 0);
YAP_UserCPredicate("trie_mode", p_trie_mode, 1);
YAP_UserCPredicate("trie_put_entry", p_trie_put_entry, 3);
YAP_UserCPredicate("trie_check_entry", p_trie_check_entry, 3);
YAP_UserCPredicate("trie_get_entry", p_trie_get_entry, 2);
YAP_UserCPredicate("trie_remove_entry", p_trie_remove_entry, 1);
YAP_UserCPredicate("trie_remove_subtree", p_trie_remove_subtree, 1);
YAP_UserCPredicate("trie_save", p_trie_save, 2);
YAP_UserCPredicate("trie_load", p_trie_load, 2);
YAP_UserCPredicate("trie_usage", p_trie_usage, 4);
YAP_UserCPredicate("trie_stats", p_trie_stats, 4);
YAP_UserCPredicate("trie_max_stats", p_trie_max_stats, 4);
YAP_UserCPredicate("trie_print", p_trie_print, 1);
/* backwards compatibility */
YAP_UserCPredicate("open_trie", p_open_trie, 1);
YAP_UserCPredicate("close_trie", p_close_trie, 1);
YAP_UserCPredicate("close_all_tries", p_close_all_tries, 0);
YAP_UserCPredicate("put_trie_entry", p_put_trie_entry, 4);
YAP_UserCPredicate("get_trie_entry", p_get_trie_entry, 3);
YAP_UserCPredicate("remove_trie_entry", p_remove_trie_entry, 1);
YAP_UserCPredicate("print_trie", p_print_trie, 1);
return;
}
/* --------------------------------- */
/* Backwards Compatibility */
/* --------------------------------- */
/* open_trie(+Trie) */
static int p_open_trie(void) {
return p_trie_open();
}
/* close_trie(-Trie) */
static int p_close_trie(void) {
return p_trie_close();
}
/* close_all_tries() */
static int p_close_all_tries(void) {
return p_trie_close_all();
}
/* put_trie_entry(-Mode,-Trie,-Entry,+Ref) */
#define arg_mode YAP_ARG1
#define arg_trie YAP_ARG2
#define arg_entry YAP_ARG3
#define arg_ref YAP_ARG4
static int p_put_trie_entry(void) {
TrNode node;
const char *mode_str;
YAP_Int mode, current_mode;
/* check args */
mode_str = YAP_AtomName(YAP_AtomOfTerm(arg_mode));
if (!strcmp(mode_str, "std"))
mode = TRIE_MODE_STANDARD;
else if (!strcmp(mode_str, "rev"))
mode = TRIE_MODE_REVERSE;
else
return FALSE;
if (!YAP_IsIntTerm(arg_trie))
return FALSE;
/* put trie entry */
current_mode = trie_get_mode();
trie_set_mode(mode);
node = trie_put_entry(TRIE_ENGINE, (TrNode) YAP_IntOfTerm(arg_trie), arg_entry, NULL);
trie_set_mode(current_mode);
return YAP_Unify(arg_ref, YAP_MkIntTerm((YAP_Int) node));
}
#undef arg_mode
#undef arg_trie
#undef arg_entry
#undef arg_ref
/* get_trie_entry(-Mode,-Ref,+Entry) */
#define arg_mode YAP_ARG1
#define arg_ref YAP_ARG2
#define arg_entry YAP_ARG3
static int p_get_trie_entry(void) {
YAP_Term entry;
const char *mode_str;
YAP_Int mode, current_mode;
/* check args */
mode_str = YAP_AtomName(YAP_AtomOfTerm(arg_mode));
if (!strcmp(mode_str, "std"))
mode = TRIE_MODE_STANDARD;
else if (!strcmp(mode_str, "rev"))
mode = TRIE_MODE_REVERSE;
else
return FALSE;
if (!YAP_IsIntTerm(arg_ref))
return FALSE;
/* get trie entry */
current_mode = trie_get_mode();
trie_set_mode(mode);
entry = trie_get_entry((TrNode) YAP_IntOfTerm(arg_ref));
trie_set_mode(current_mode);
return YAP_Unify(arg_entry, entry);
}
#undef arg_mode
#undef arg_ref
#undef arg_entry
/* remove_trie_entry(-Ref) */
static int p_remove_trie_entry(void) {
return p_trie_remove_entry();
}
/* print_trie(-Trie) */
static int p_print_trie(void) {
return p_trie_print();
}
/* -------------------------- */
/* Local Procedures */
/* -------------------------- */
/* trie_open(+Trie) */
#define arg_trie YAP_ARG1
static int p_trie_open(void) {
TrNode node;
/* check arg */
if (!YAP_IsVarTerm(arg_trie))
return FALSE;
/* open trie */
node = trie_open(TRIE_ENGINE);
return YAP_Unify(arg_trie, YAP_MkIntTerm((YAP_Int) node));
}
#undef arg_trie
/* trie_close(-Trie) */
#define arg_trie YAP_ARG1
static int p_trie_close(void) {
/* check arg */
if (!YAP_IsIntTerm(arg_trie))
return FALSE;
/* close trie */
trie_close(TRIE_ENGINE, (TrNode) YAP_IntOfTerm(arg_trie), NULL);
return TRUE;
}
#undef arg_trie
/* trie_close_all() */
static int p_trie_close_all(void) {
trie_close_all(TRIE_ENGINE, NULL);
return TRUE;
}
/* trie_mode(?Mode) */
#define arg_mode YAP_ARG1
static int p_trie_mode(void) {
YAP_Term mode_term;
const char *mode_str;
YAP_Int mode;
/* get mode */
if (YAP_IsVarTerm(arg_mode)) {
mode = trie_get_mode();
if (mode == TRIE_MODE_STANDARD)
mode_term = YAP_MkAtomTerm(YAP_LookupAtom("std"));
else if (mode == TRIE_MODE_REVERSE)
mode_term = YAP_MkAtomTerm(YAP_LookupAtom("rev"));
else
return FALSE;
return YAP_Unify(arg_mode, mode_term);
}
/* set mode */
mode_str = YAP_AtomName(YAP_AtomOfTerm(arg_mode));
if (!strcmp(mode_str, "std"))
mode = TRIE_MODE_STANDARD;
else if (!strcmp(mode_str, "rev"))
mode = TRIE_MODE_REVERSE;
else
return FALSE;
trie_set_mode(mode);
return TRUE;
}
#undef arg_mode
/* trie_put_entry(-Trie,-Entry,+Ref) */
#define arg_trie YAP_ARG1
#define arg_entry YAP_ARG2
#define arg_ref YAP_ARG3
static int p_trie_put_entry(void) {
TrNode node;
/* check args */
if (!YAP_IsIntTerm(arg_trie))
return FALSE;
/* put trie entry */
node = trie_put_entry(TRIE_ENGINE, (TrNode) YAP_IntOfTerm(arg_trie), arg_entry, NULL);
return YAP_Unify(arg_ref, YAP_MkIntTerm((YAP_Int) node));
}
#undef arg_trie
#undef arg_entry
#undef arg_ref
/* trie_check_entry(-Trie,-Entry,+Ref) */
#define arg_trie YAP_ARG1
#define arg_entry YAP_ARG2
#define arg_ref YAP_ARG3
static int p_trie_check_entry(void) {
TrNode node;
/* check args */
if (!YAP_IsIntTerm(arg_trie))
return FALSE;
/* check trie entry */
if (!(node = trie_check_entry((TrNode) YAP_IntOfTerm(arg_trie), arg_entry)))
return FALSE;
return YAP_Unify(arg_ref, YAP_MkIntTerm((YAP_Int) node));
}
#undef arg_trie
#undef arg_entry
#undef arg_ref
/* trie_get_entry(-Ref,+Entry) */
#define arg_ref YAP_ARG1
#define arg_entry YAP_ARG2
static int p_trie_get_entry(void) {
YAP_Term entry;
/* check args */
if (!YAP_IsIntTerm(arg_ref))
return FALSE;
/* get trie entry */
entry = trie_get_entry((TrNode) YAP_IntOfTerm(arg_ref));
return YAP_Unify(arg_entry, entry);
}
#undef arg_ref
#undef arg_entry
/* trie_remove_entry(-Ref) */
#define arg_ref YAP_ARG1
static int p_trie_remove_entry(void) {
/* check arg */
if (!YAP_IsIntTerm(arg_ref))
return FALSE;
/* remove trie entry */
trie_remove_entry(TRIE_ENGINE, (TrNode) YAP_IntOfTerm(arg_ref), NULL);
return TRUE;
}
#undef arg_ref
/* trie_remove_subtree(-Ref) */
#define arg_ref YAP_ARG1
static int p_trie_remove_subtree(void) {
/* check arg */
if (!YAP_IsIntTerm(arg_ref))
return FALSE;
/* remove trie subtree */
trie_remove_subtree(TRIE_ENGINE, (TrNode) YAP_IntOfTerm(arg_ref), NULL);
return TRUE;
}
#undef arg_ref
/* trie_save(-Trie,-FileName) */
#define arg_trie YAP_ARG1
#define arg_file YAP_ARG2
static int p_trie_save(void) {
const char *file_str;
FILE *file;
/* check args */
if (!YAP_IsIntTerm(arg_trie))
return FALSE;
if (!YAP_IsAtomTerm(arg_file))
return FALSE;
/* open file */
file_str = YAP_AtomName(YAP_AtomOfTerm(arg_file));
if (!(file = fopen(file_str, "w")))
return FALSE;
/* save trie and close file */
trie_save((TrNode) YAP_IntOfTerm(arg_trie), file, NULL);
if (fclose(file))
return FALSE;
return TRUE;
}
#undef arg_trie
#undef arg_file
/* trie_load(+Trie,-FileName) */
#define arg_trie YAP_ARG1
#define arg_file YAP_ARG2
static int p_trie_load(void) {
TrNode node;
const char *file_str;
FILE *file;
/* check args */
if (!YAP_IsVarTerm(arg_trie))
return FALSE;
if (!YAP_IsAtomTerm(arg_file))
return FALSE;
/* open file */
file_str = YAP_AtomName(YAP_AtomOfTerm(arg_file));
if (!(file = fopen(file_str, "r")))
return FALSE;
/* load trie and close file */
node = trie_load(TRIE_ENGINE, file, NULL);
if (fclose(file))
return FALSE;
return YAP_Unify(arg_trie, YAP_MkIntTerm((YAP_Int) node));
}
#undef arg_trie
#undef arg_file
/* trie_stats(+Memory,+Tries,+Entries,+Nodes) */
#define arg_memory YAP_ARG1
#define arg_tries YAP_ARG2
#define arg_entries YAP_ARG3
#define arg_nodes YAP_ARG4
static int p_trie_stats(void) {
YAP_Int memory, tries, entries, nodes;
/* get stats */
trie_stats(TRIE_ENGINE, &memory, &tries, &entries, &nodes);
if (!YAP_Unify(arg_memory, YAP_MkIntTerm(memory)))
return FALSE;
if (!YAP_Unify(arg_tries, YAP_MkIntTerm(tries)))
return FALSE;
if (!YAP_Unify(arg_entries, YAP_MkIntTerm(entries)))
return FALSE;
if (!YAP_Unify(arg_nodes, YAP_MkIntTerm(nodes)))
return FALSE;
return TRUE;
}
#undef arg_memory
#undef arg_tries
#undef arg_entries
#undef arg_nodes
/* trie_max_stats(+Memory,+Tries,+Entries,+Nodes) */
#define arg_memory YAP_ARG1
#define arg_tries YAP_ARG2
#define arg_entries YAP_ARG3
#define arg_nodes YAP_ARG4
static int p_trie_max_stats(void) {
YAP_Int memory, tries, entries, nodes;
/* get stats */
trie_max_stats(TRIE_ENGINE, &memory, &tries, &entries, &nodes);
if (!YAP_Unify(arg_memory, YAP_MkIntTerm(memory)))
return FALSE;
if (!YAP_Unify(arg_tries, YAP_MkIntTerm(tries)))
return FALSE;
if (!YAP_Unify(arg_entries, YAP_MkIntTerm(entries)))
return FALSE;
if (!YAP_Unify(arg_nodes, YAP_MkIntTerm(nodes)))
return FALSE;
return TRUE;
}
#undef arg_memory
#undef arg_tries
#undef arg_entries
#undef arg_nodes
/* trie_usage(-Trie,+Entries,+Nodes,+VirtualNodes) */
#define arg_trie YAP_ARG1
#define arg_entries YAP_ARG2
#define arg_nodes YAP_ARG3
#define arg_virtualnodes YAP_ARG4
static int p_trie_usage(void) {
YAP_Int entries, nodes, virtualnodes;
/* check arg */
if (!YAP_IsIntTerm(arg_trie))
return FALSE;
/* get trie usage */
trie_usage((TrNode) YAP_IntOfTerm(arg_trie), &entries, &nodes, &virtualnodes);
if (!YAP_Unify(arg_entries, YAP_MkIntTerm(entries)))
return FALSE;
if (!YAP_Unify(arg_nodes, YAP_MkIntTerm(nodes)))
return FALSE;
if (!YAP_Unify(arg_virtualnodes, YAP_MkIntTerm(virtualnodes)))
return FALSE;
return TRUE;
}
#undef arg_trie
#undef arg_entries
#undef arg_nodes
#undef arg_virtualnodes
/* trie_print(-Trie) */
#define arg_trie YAP_ARG1
static int p_trie_print(void) {
/* check arg */
if (!YAP_IsIntTerm(arg_trie))
return FALSE;
/* print trie */
trie_print((TrNode) YAP_IntOfTerm(arg_trie), NULL);
return TRUE;
}
#undef arg_trie
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