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|
use rt::{compile, status};
type subtype = struct {
foo: int,
};
type super1 = struct {
foo: subtype,
bar: int,
};
type super2 = struct {
subtype,
bar: int,
};
type super3 = struct {
struct { foo: int },
bar: int,
};
type func = fn() void;
fn rules() void = {
// Fixed precision ints
let _i64: i64 = 0i64;
_i64 = 42i8;
_i64 = 42i16;
_i64 = 42i32;
_i64 = 42i;
let _i32: i32 = 0i32;
_i32 = 42i8;
_i32 = 42i16;
let _i16: i16 = 0i16;
_i16 = 42i8;
let _u64: u64 = 0u64;
_u64 = 42u8;
_u64 = 42u16;
_u64 = 42u32;
_u64 = 42u;
let _u32: u32 = 0u32;
_u32 = 42u8;
_u32 = 42u16;
let _u16: u16 = 0u16;
_u16 = 42u8;
// Implementation-defined precision
if (size(int) == 8) {
compile(status::SUCCESS, "fn test() void = { let i: int = 42i64; };")!;
};
let i: int = 42i;
i = 42i32;
i = 42i16;
i = 42i8;
if (size(uint) == 8) {
compile(status::SUCCESS, "fn test() void = { let u: uint = 42u64; };")!;
};
let u: uint = 42u;
u = 42u32;
u = 42u16;
u = 42u8;
// Precision loss (should fail)
compile(status::CHECK, "fn test() void = { let _i8: i8 = 42i16; };")!;
compile(status::CHECK, "fn test() void = { let _i8: i8 = 42i32; };")!;
compile(status::CHECK, "fn test() void = { let _i8: i8 = 42i64; };")!;
compile(status::CHECK, "fn test() void = { let _i8: i8 = 42i; };")!;
compile(status::CHECK, "fn test() void = { let _i16: i16 = 42i32; };")!;
compile(status::CHECK, "fn test() void = { let _i16: i16 = 42i64; };")!;
compile(status::CHECK, "fn test() void = { let _i32: i32 = 42i64; };")!;
compile(status::CHECK, "fn test() void = { let _u8: u8 = 42u16; };")!;
compile(status::CHECK, "fn test() void = { let _u8: u8 = 42u32; };")!;
compile(status::CHECK, "fn test() void = { let _u8: u8 = 42u64; };")!;
compile(status::CHECK, "fn test() void = { let _u8: u8 = 42u; };")!;
compile(status::CHECK, "fn test() void = { let _u16: u16 = 42u32; };")!;
compile(status::CHECK, "fn test() void = { let _u16: u16 = 42u64; };")!;
compile(status::CHECK, "fn test() void = { let _u32: u32 = 42u64; };")!;
compile(status::CHECK, "fn test() void = { let _f32: f32 = 42f64; };")!;
// Pointer conversions
let nptr: nullable *int = null;
nptr = &i;
let vptr: nullable *opaque = nptr;
// Slice conversions
let s: []int = [1, 2, 3];
let s: []opaque = s;
// Struct subtyping
let sptr: *subtype = &super1 { ... };
let sptr: *subtype = &super2 { ... };
let sptr: *struct { foo: int } = &super3 { ... };
// Invalid pointer conversions
compile(status::CHECK,
"fn test() void = { let x: nullable *int = null; let y: *int = x; };"
)!;
compile(status::CHECK,
"fn test() void = { let x: int = 10; let y: *int = &x; let y: *uint = x; };"
)!;
compile(status::CHECK,
"type i = int;"
"fn test() void = { let x = &42; let y: *i = x; };"
)!;
compile(status::CHECK,
"type v = void;"
"fn test() void = { let x = &0; let x: *v = x; };"
)!;
// Invalid slice conversions
compile(status::CHECK,
"type i = int;"
"fn test() void = { let x: []int = [1, 2, 3]; let y: []i = x; };"
)!;
compile(status::CHECK,
"type v = void;"
"fn test() void = { let x: []int = [0]; let x: []v = x; };"
)!;
// Non-const from const (copy)
const j = 10;
let k = j;
// non-void types cannot be assigned to void
compile(status::CHECK, `
fn disallow_1() void = "I am illegeal";
fn disallow_2() void = 12;
`)!;
};
fn rvalue() i64 = {
return 1234;
};
fn callme(in: i64) void = {
assert(in == 1234i64);
};
fn calls() void = {
callme(1234);
};
export fn main() void = {
rules();
assert(rvalue() == 1234i64);
calls();
// TODO: Expand this:
// - Floats
// - Arrays <-> slices
};
|
