224 lines
6.2 KiB
C
224 lines
6.2 KiB
C
#include <sys/types.h>
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#include <assert.h>
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#include <setjmp.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "dtypes.h"
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#include "utils.h"
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#include "utf8.h"
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#include "ios.h"
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#include "socket.h"
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#include "timefuncs.h"
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#include "hashing.h"
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#include "htable.h"
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#include "htableh_inc.h"
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#include "bitvector.h"
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#include "dirpath.h"
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#include "random.h"
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#include "llt.h"
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#include "flisp.h"
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#include "equalhash.h"
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static value_t tablesym;
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static fltype_t *tabletype;
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void print_htable(value_t v, ios_t *f)
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{
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struct htable *h = (struct htable *)cv_data((cvalue_t *)ptr(v));
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size_t i;
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int first = 1;
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fl_print_str("#table(", f);
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for (i = 0; i < h->size; i += 2) {
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if (h->table[i + 1] != HT_NOTFOUND) {
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if (!first)
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fl_print_str(" ", f);
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fl_print_child(f, (value_t)h->table[i]);
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fl_print_chr(' ', f);
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fl_print_child(f, (value_t)h->table[i + 1]);
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first = 0;
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}
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}
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fl_print_chr(')', f);
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}
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void print_traverse_htable(value_t self)
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{
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struct htable *h = (struct htable *)cv_data((cvalue_t *)ptr(self));
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size_t i;
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for (i = 0; i < h->size; i += 2) {
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if (h->table[i + 1] != HT_NOTFOUND) {
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print_traverse((value_t)h->table[i]);
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print_traverse((value_t)h->table[i + 1]);
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}
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}
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}
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void free_htable(value_t self)
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{
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struct htable *h = (struct htable *)cv_data((cvalue_t *)ptr(self));
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htable_free(h);
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}
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void relocate_htable(value_t oldv, value_t newv)
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{
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struct htable *oldh = (struct htable *)cv_data((cvalue_t *)ptr(oldv));
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struct htable *h = (struct htable *)cv_data((cvalue_t *)ptr(newv));
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if (oldh->table == &oldh->_space[0])
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h->table = &h->_space[0];
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size_t i;
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for (i = 0; i < h->size; i++) {
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if (h->table[i] != HT_NOTFOUND)
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h->table[i] = (void *)relocate_lispvalue((value_t)h->table[i]);
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}
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}
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cvtable_t table_vtable = { print_htable, relocate_htable, free_htable,
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print_traverse_htable };
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int ishashtable(value_t v)
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{
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return iscvalue(v) && cv_class((cvalue_t *)ptr(v)) == tabletype;
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}
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value_t fl_tablep(value_t *args, uint32_t nargs)
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{
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argcount("table?", nargs, 1);
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return ishashtable(args[0]) ? FL_T : FL_F;
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}
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static struct htable *totable(value_t v, char *fname)
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{
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if (!ishashtable(v))
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type_error(fname, "table", v);
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return (struct htable *)cv_data((cvalue_t *)ptr(v));
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}
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value_t fl_table(value_t *args, uint32_t nargs)
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{
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size_t cnt = (size_t)nargs;
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if (cnt & 1)
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lerror(ArgError, "table: arguments must come in pairs");
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value_t nt;
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// prevent small tables from being added to finalizer list
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if (cnt <= HT_N_INLINE) {
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tabletype->vtable->finalize = NULL;
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nt = cvalue(tabletype, sizeof(struct htable));
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tabletype->vtable->finalize = free_htable;
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} else {
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nt = cvalue(tabletype, 2 * sizeof(void *));
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}
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struct htable *h = (struct htable *)cv_data((cvalue_t *)ptr(nt));
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htable_new(h, cnt / 2);
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uint32_t i;
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value_t k = FL_NIL, arg = FL_NIL;
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FOR_ARGS(i, 0, arg, args)
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{
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if (i & 1)
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equalhash_put(h, (void *)k, (void *)arg);
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else
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k = arg;
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}
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return nt;
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}
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// (put! table key value)
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value_t fl_table_put(value_t *args, uint32_t nargs)
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{
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argcount("put!", nargs, 3);
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struct htable *h = totable(args[0], "put!");
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void **table0 = h->table;
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equalhash_put(h, (void *)args[1], (void *)args[2]);
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// register finalizer if we outgrew inline space
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if (table0 == &h->_space[0] && h->table != &h->_space[0]) {
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cvalue_t *cv = (cvalue_t *)ptr(args[0]);
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add_finalizer(cv);
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cv->len = 2 * sizeof(void *);
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}
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return args[0];
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}
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static void key_error(char *fname, value_t key)
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{
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lerrorf(fl_list2(KeyError, key), "%s: key not found", fname);
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}
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// (get table key [default])
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value_t fl_table_get(value_t *args, uint32_t nargs)
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{
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if (nargs != 3)
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argcount("get", nargs, 2);
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struct htable *h = totable(args[0], "get");
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value_t v = (value_t)equalhash_get(h, (void *)args[1]);
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if (v == (value_t)HT_NOTFOUND) {
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if (nargs == 3)
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return args[2];
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key_error("get", args[1]);
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}
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return v;
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}
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// (has? table key)
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value_t fl_table_has(value_t *args, uint32_t nargs)
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{
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argcount("has", nargs, 2);
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struct htable *h = totable(args[0], "has");
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return equalhash_has(h, (void *)args[1]) ? FL_T : FL_F;
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}
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// (del! table key)
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value_t fl_table_del(value_t *args, uint32_t nargs)
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{
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argcount("del!", nargs, 2);
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struct htable *h = totable(args[0], "del!");
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if (!equalhash_remove(h, (void *)args[1]))
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key_error("del!", args[1]);
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return args[0];
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}
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value_t fl_table_foldl(value_t *args, uint32_t nargs)
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{
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argcount("table.foldl", nargs, 3);
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value_t f = args[0], zero = args[1], t = args[2];
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struct htable *h = totable(t, "table.foldl");
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size_t i, n = h->size;
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void **table = h->table;
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fl_gc_handle(&f);
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fl_gc_handle(&zero);
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fl_gc_handle(&t);
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for (i = 0; i < n; i += 2) {
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if (table[i + 1] != HT_NOTFOUND) {
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zero =
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fl_applyn(3, f, (value_t)table[i], (value_t)table[i + 1], zero);
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// reload pointer
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h = (struct htable *)cv_data((cvalue_t *)ptr(t));
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if (h->size != n)
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lerror(EnumerationError, "table.foldl: table modified");
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table = h->table;
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}
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}
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fl_free_gc_handles(3);
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return zero;
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}
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static builtinspec_t tablefunc_info[] = { { "table", fl_table },
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{ "table?", fl_tablep },
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{ "put!", fl_table_put },
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{ "get", fl_table_get },
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{ "has?", fl_table_has },
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{ "del!", fl_table_del },
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{ "table.foldl", fl_table_foldl },
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{ NULL, NULL } };
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void table_init(void)
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{
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tablesym = symbol("table");
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tabletype =
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define_opaque_type(tablesym, sizeof(struct htable), &table_vtable, NULL);
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assign_global_builtins(tablefunc_info);
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}
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