diff options
Diffstat (limited to 'stdlib/pointers.c')
| -rw-r--r-- | stdlib/pointers.c | 123 |
1 files changed, 0 insertions, 123 deletions
diff --git a/stdlib/pointers.c b/stdlib/pointers.c deleted file mode 100644 index 76e882ec..00000000 --- a/stdlib/pointers.c +++ /dev/null @@ -1,123 +0,0 @@ -// Type infos and methods for Pointer types -#include <ctype.h> -#include <err.h> -#include <gc.h> -#include <stdbool.h> -#include <stdint.h> -#include <stdlib.h> -#include <sys/param.h> - -#include "integers.h" -#include "metamethods.h" -#include "tables.h" -#include "text.h" -#include "types.h" -#include "util.h" - -public Text_t Pointer$as_text(const void *x, bool colorize, const TypeInfo_t *type) { - auto ptr_info = type->PointerInfo; - if (!x) { - Text_t typename = generic_as_text(NULL, false, ptr_info.pointed); - if (colorize) - return Text$concat(Text("\x1b[34;1m"), Text$from_str(ptr_info.sigil), typename, Text("\x1b[m")); - else - return Text$concat(Text$from_str(ptr_info.sigil), typename); - } - const void *ptr = *(const void**)x; - if (!ptr) { - Text_t typename = generic_as_text(NULL, false, ptr_info.pointed); - if (colorize) - return Text$concat(Text("\x1b[34;1m!"), typename, Text("\x1b[m")); - else - return Text$concat(Text("!"), typename); - } - - static const void *root = NULL; - static Table_t pending = {}; - bool top_level = (root == NULL); - - // Check for recursive references, so if `x.foo = x`, then it prints as - // `@Foo{foo=@~1}` instead of overflowing the stack: - if (top_level) { - root = ptr; - } else if (ptr == root) { - return Text$format(colorize ? "\x1b[34;1m%s~1\x1b[m" : "%s~1", ptr_info.sigil); - } else { - TypeInfo_t rec_table = *Table$info(type, &Int64$info); - int64_t *id = Table$get(pending, x, &rec_table); - if (id) - return Text$format(colorize ? "\x1b[34;1m%s~%ld\x1b[m" : "%s~%ld", ptr_info.sigil, *id); - int64_t next_id = pending.entries.length + 2; - Table$set(&pending, x, &next_id, &rec_table); - } - - Text_t pointed = generic_as_text(ptr, colorize, ptr_info.pointed); - - if (top_level) { - pending = (Table_t){}; // Restore - root = NULL; - } - - Text_t text; - if (colorize) - text = Text$concat(Text("\x1b[34;1m"), Text$from_str(ptr_info.sigil), Text("\x1b[m"), pointed); - else - text = Text$concat(Text$from_str(ptr_info.sigil), pointed); - return text; -} - -PUREFUNC public int32_t Pointer$compare(const void *x, const void *y, const TypeInfo_t*) { - const void *xp = *(const void**)x, *yp = *(const void**)y; - return (xp > yp) - (xp < yp); -} - -PUREFUNC public bool Pointer$equal(const void *x, const void *y, const TypeInfo_t*) { - const void *xp = *(const void**)x, *yp = *(const void**)y; - return xp == yp; -} - -PUREFUNC public bool Pointer$is_none(const void *x, const TypeInfo_t*) -{ - return *(void**)x == NULL; -} - -public void Pointer$serialize(const void *obj, FILE *out, Table_t *pointers, const TypeInfo_t *type) -{ - void *ptr = *(void**)obj; - assert(ptr != NULL); - - const TypeInfo_t ptr_to_int_table = {.size=sizeof(Table_t), .align=__alignof__(Table_t), - .tag=TableInfo, .TableInfo.key=type, .TableInfo.value=&Int64$info}; - - int64_t *id_ptr = Table$get(*pointers, &ptr, &ptr_to_int_table); - int64_t id; - if (id_ptr) { - id = *id_ptr; - } else { - id = pointers->entries.length + 1; - Table$set(pointers, &ptr, &id, &ptr_to_int_table); - } - - Int64$serialize(&id, out, pointers, &Int64$info); - - if (!id_ptr) - _serialize(ptr, out, pointers, type->PointerInfo.pointed); -} - -public void Pointer$deserialize(FILE *in, void *outval, Array_t *pointers, const TypeInfo_t *type) -{ - int64_t id = 0; - Int64$deserialize(in, &id, pointers, &Int64$info); - assert(id != 0); - - if (id > pointers->length) { - void *obj = GC_MALLOC((size_t)type->PointerInfo.pointed->size); - Array$insert(pointers, &obj, I(0), sizeof(void*)); - _deserialize(in, obj, pointers, type->PointerInfo.pointed); - *(void**)outval = obj; - } else { - *(void**)outval = *(void**)(pointers->data + (id-1)*pointers->stride); - } -} - -// vim: ts=4 sw=0 et cino=L2,l1,(0,W4,m1,\:0 |
