[−][src]Function casperlabs_contract::ext_ffi::transfer_from_purse_to_purse
pub unsafe extern "C" fn transfer_from_purse_to_purse(
source_ptr: *const u8,
source_size: usize,
target_ptr: *const u8,
target_size: usize,
amount_ptr: *const u8,
amount_size: usize
) -> i32
This function uses the mint contract’s transfer function to transfer
tokens from the specified source purse to the specified target purse. If
the target account does not exist then it is automatically created, and
the tokens are transferred to the main purse of the new account. The
source is a serialized casperlabs_types::uref::URef
.
The target is also a serialized casperlabs_types::uref::URef
. The amount must be a
serialized 512-bit unsigned integer. This function causes a Trap
if the
source or target cannot be de-serialized as a casperlabs_types::uref::URef
or the amount
cannot be de-serialized into a U512
. The return value indicated what
occurred, where 0 means a successful transfer, 1 means the transfer
failed (this could be because the source purse had insufficient tokens or
because there was not valid access to the source purse or target purse).
Arguments
source_ptr
- pointer in wasm memory to bytes representing the sourcecasperlabs_types::uref::URef
to transfer fromsource_size
- size of the sourcecasperlabs_types::uref::URef
(in bytes)target_ptr
- pointer in wasm memory to bytes representing the targetcasperlabs_types::uref::URef
to transfer totarget_size
- size of the target (in bytes)amount_ptr
- pointer in wasm memory to bytes representing the amount to transfer to the target accountamount_size
- size of the amount (in bytes)