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use rt::{compile, status, slice};
type my_struct = struct {
x: int,
y: int,
};
type my_struct_ptr = *my_struct;
type nomem_alias = nomem;
type my_int = int;
type my_u32 = u32;
fn allocation() void = {
let x = alloc(1234)!;
assert(*x == 1234);
free(x);
let y: (*int | nomem) = alloc(1234);
if (!(y is nomem)) {
assert(*(y as *int) == 1234);
};
free(y as *int);
let z: my_struct_ptr = alloc(my_struct {
x = 42,
y = 69,
})!;
assert(z.x == 42 && z.y == 69);
free(z);
let w: *my_int = alloc(1234)!;
assert(*w == 1234);
free(w);
let a: *const my_u32 = alloc(1234u32)!;
assert(*a == 1234);
free(a);
};
fn failure() (void | nomem_alias) = {
let x = alloc([1u8...], 500000000000000); // 500 TB
assert(x is nomem);
let sl = *(&slice {
data = 0xdeaddead: uintptr: *opaque,
length = 500000000000000,
capacity = 500000000000000,
}: *[]u8);
let x = alloc(sl...);
assert(x is nomem);
let x: (*[500000000000000]u8 | nomem) = alloc([1...]);
assert(x is nomem);
let x: (*[500000000000000]u8 | nomem) = alloc([1...])?;
abort(); // unreachable
};
fn assignment() void = {
let x = alloc(1234)!;
*x = 4321;
assert(*x == 4321);
free(x);
};
fn double_pointer() void = {
let x = alloc(1234)!;
let y = alloc(x)!;
*x = 4321;
assert(**y == 4321);
**y = 1337;
assert(*x == 1337);
free(y);
free(x);
};
fn double_alloc() void = {
let x = alloc(1234)!;
let y = alloc(4321)!;
assert(x != y && *x != *y);
free(x);
free(y);
};
type aslice = []int;
type aarray = [3]int;
fn array() void = {
let aa: *aarray = alloc([0...])!;
free(aa);
let aa: *aarray = alloc([0...])!;
free(aa);
let aa: *aarray = alloc([0...]: aarray)!;
free(aa);
let aa: *aarray = alloc([0...]: aarray)!;
free(aa);
let x: *[24]int = alloc([1, 2...])!;
assert(len(x) == 24);
assert(x[0] == 1);
for (let i = 1z; i < len(x); i += 1) {
assert(x[i] == 2);
};
free(x);
};
fn slice_allocation() void = {
let x: aslice = alloc([1, 2, 3]: aarray, 10)!;
assert(len(x) == 3);
for (let i = 0z; i < len(x); i += 1) {
assert(x[i] == (i + 1): int);
};
free(x);
let y: []int = alloc([1, 2, 3])!;
assert(len(x) == 3);
for (let i = 0z; i < len(y); i += 1) {
assert(y[i] == (i + 1): int);
};
free(y);
let z: []int = [];
let p = &z: *struct {
data: nullable *[*]int,
length: size,
capacity: size,
};
assert(p.data == null && p.length == 0 && p.capacity == 0);
let x: []int = alloc([1, 2, 3...], 42)!;
defer free(x);
assert(x[0] == 1);
assert(x[1] == 2);
assert(x[2] == 3);
for (let i = 2z; i < len(x); i += 1) {
assert(x[i] == 3);
};
// ensure capacity is cast to size correctly
let a: u32 = 4;
let y: []u64 = alloc([1...], a)!;
defer free(y);
assert(len(y) == 4 && y[0] == 1 && y[3] == 1);
};
fn slice_copy() void = {
let x: []int = [1, 2, 3];
let p: []int = alloc(x...)!;
defer free(p);
assert(p: *[*]int != x: *[*]int);
assert(len(p) == len(x));
for (let i = 0z; i < len(p); i += 1) {
assert(p[i] == x[i]);
};
let q: *[]int = alloc(x)!;
defer free(q);
assert((*q): *[*]int == x: *[*]int);
let r: []int = alloc([1, 2, 3]...)!;
defer free(r);
assert(len(x) == len(r));
for (let i = 0z; i < len(x); i += 1) {
assert(x[i] == r[i]);
};
};
fn string() void = {
let x = struct {
data: *[3]int = alloc([1, 2, 3])!,
length: size = 3,
capacity: size = 3,
};
let y = *(&x: *str);
assert(len(y) == 3);
free(y);
};
fn _null() void = {
let x: nullable *int = null;
free(x);
free(null);
};
fn aliases() void = {
compile(status::CHECK,
"fn test() void = { let x: (*u32 | *u64 | nomem) = alloc(123); };"
)!;
};
export fn main() void = {
assert(size(nomem) == 0);
assignment();
assert(failure() is nomem_alias);
allocation();
double_pointer();
double_alloc();
array();
slice_allocation();
slice_copy();
string();
_null();
aliases();
};
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