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| author | Tyge Lovset <[email protected]> | 2022-12-20 23:31:51 +0100 |
|---|---|---|
| committer | Tyge Lovset <[email protected]> | 2022-12-20 23:31:51 +0100 |
| commit | 5f57d597cd27aef55adbcb3b452973b0c6e33667 (patch) | |
| tree | dfd59c2fd0e36a6ef37912a9d0cc5a65970f1524 /misc/examples/box.c | |
| parent | 1763be8c8cbbc0896477fcf924edd4180d1345a9 (diff) | |
| download | STC-modified-5f57d597cd27aef55adbcb3b452973b0c6e33667.tar.gz STC-modified-5f57d597cd27aef55adbcb3b452973b0c6e33667.zip | |
Restructured folders: examples, benchmarks, tests into misc folder.
Diffstat (limited to 'misc/examples/box.c')
| -rw-r--r-- | misc/examples/box.c | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/misc/examples/box.c b/misc/examples/box.c new file mode 100644 index 00000000..da13501f --- /dev/null +++ b/misc/examples/box.c @@ -0,0 +1,68 @@ +/* cbox: heap allocated boxed type */ +#include <stc/cstr.h> + +typedef struct { cstr name, last; } Person; + +Person Person_make(const char* name, const char* last) { + return (Person){.name = cstr_from(name), .last = cstr_from(last)}; +} + +uint64_t Person_hash(const Person* a) { + return cstr_hash(&a->name) ^ cstr_hash(&a->last); +} + +int Person_cmp(const Person* a, const Person* b) { + int c = cstr_cmp(&a->name, &b->name); + return c ? c : cstr_cmp(&a->last, &b->last); +} + +Person Person_clone(Person p) { + p.name = cstr_clone(p.name); + p.last = cstr_clone(p.last); + return p; +} + +void Person_drop(Person* p) { + printf("drop: %s %s\n", cstr_str(&p->name), cstr_str(&p->last)); + c_drop(cstr, &p->name, &p->last); +} + +#define i_type PBox +#define i_valclass Person // "class" binds _cmp, _clone, _drop functions. +#include <stc/cbox.h> + +#define i_type Persons +#define i_valboxed PBox // "arcbox" informs that PBox is a smart pointer. +#include <stc/csset.h> + +int main() +{ + c_auto (Persons, vec) + c_auto (PBox, p, q) + { + p = PBox_from(Person_make("Laura", "Palmer")); + q = PBox_clone(p); + cstr_assign(&q.get->name, "Leland"); + + printf("orig: %s %s\n", cstr_str(&p.get->name), cstr_str(&p.get->last)); + printf("copy: %s %s\n", cstr_str(&q.get->name), cstr_str(&q.get->last)); + + Persons_emplace(&vec, Person_make("Dale", "Cooper")); + Persons_emplace(&vec, Person_make("Audrey", "Home")); + + // NB! Clone/share p and q in the Persons container. + Persons_push(&vec, PBox_clone(p)); + Persons_push(&vec, PBox_clone(q)); + + c_foreach (i, Persons, vec) + printf("%s %s\n", cstr_str(&i.ref->get->name), cstr_str(&i.ref->get->last)); + puts(""); + + // Look-up Audrey! Create a temporary Person for lookup. + c_with (Person a = Person_make("Audrey", "Home"), Person_drop(&a)) { + const PBox *v = Persons_get(&vec, a); // lookup + if (v) printf("found: %s %s\n", cstr_str(&v->get->name), cstr_str(&v->get->last)); + } + puts(""); + } +} |
