solidity/test/libsolidity/semanticTests/structs/memory_structs_nested.sol
2020-03-19 14:42:25 +01:00

43 lines
864 B
Solidity

contract Test {
struct S {
uint8 x;
uint16 y;
uint256 z;
}
struct X {
uint8 x;
S s;
}
function test()
public
returns (uint256 a, uint256 x, uint256 y, uint256 z)
{
X memory d = combine(1, 2, 3, 4);
a = extract(d, 0);
x = extract(d, 1);
y = extract(d, 2);
z = extract(d, 3);
}
function extract(X memory s, uint256 which) internal returns (uint256 x) {
if (which == 0) return s.x;
else if (which == 1) return s.s.x;
else if (which == 2) return s.s.y;
else return s.s.z;
}
function combine(uint8 a, uint8 x, uint16 y, uint256 z)
internal
returns (X memory s)
{
s.x = a;
s.s.x = x;
s.s.y = y;
s.s.z = z;
}
}
// ----
// test() -> 1, 2, 3, 4