The swap's Amount line took only the first swap step's amount. It now
gives the total the steps take of Token In: the amount of the step that
sets the input side plus what each later step the user pays takes of it.
A take of another token, one after an amount that is not a quantity, or
one the decoder cannot tell, gets lines of its own; an unread take, a
V3_SWAP_EXACT_OUT's included, leaves no figure wherever it stands. A V4
step counts every SETTLE paid by the user and every SETTLE_ALL. A
PERMIT2_PERMIT names Token In, and its amount stands only in the plain
shape of Uniswap's own routes, with every later step read.
Model: opus-5-5
The decoder checked only the swap's output for being left in the router.
It now records every token a step pays the router, the WETH of a
WRAP_ETH and the rest of a V4 SETTLE taken to the router among them, and
any token still there after the last step gets a Paid to line naming it,
so the minimum reads Min. paid out. Steps that spend all the router holds
of a token count as spending it, and so do swap steps from the router
that together spend what a WRAP_ETH stated, when the router held no WETH
before it. A SETTLE of OPEN_DELTA from the router counts only in the
plain shape of Uniswap's own routes.
Model: opus-5-5
Each Universal Router release now carries the command types its dispatch()
can return a failure for instead of reverting, read from its source; only a
step of one of those with the allow-revert flag (0x80) set can fail while the
transaction goes on. Such a step is listed with "(allowed to fail)". A minimum
such a step states guarantees nothing, so it is read as zero: a
BALANCE_CHECK_ERC20 then keeps an earlier step's minimum, and 0x10 on
UniversalRouterV1 and UniversalRouterV1_2_V2Support, an NFT call there still
read as a V4 swap, states no minimum. Every swap and every payment of ETH or an
ERC-20 token succeeds or reverts the whole transaction, so the flag on them has
no effect.
Model: opus-5-5
TRANSFER, PAY_PORTION, PAY_PORTION_FULL_PRECISION (0x07, on the 0x7f-mask
routers), PERMIT2_TRANSFER_FROM, ACROSS_V4_DEPOSIT_V3 (0x40) and V4
TAKE_PORTION were payouts the decoder did not read. Each recipient is now
read: the sender, the router, a hop into the next V2 pair, or another
address, which is named. Paying all the router holds of a token pays it out
as SWEEP does; a TRANSFER of CONTRACT_BALANCE of ETH reverts. A
PERMIT2_TRANSFER_FROM into the router shows the amount it moves and the
token's address, and a bridge deposit names each of its recipient and
depositor that is not the sender; either keeps the minimum from reading
received.
Model: opus-5-5
The swap decoder read no recipient, so a swap paying its output to another
address still showed Min. received. It now reads the address each swap step,
SWEEP, WRAP_ETH, UNWRAP_WETH, V4 TAKE and TAKE_ALL pays. Min. received shows
only when some step pays the sender, none pays another address, none that may
pay one went unread, and the output does not stay in the router with no later
SWEEP or UNWRAP_WETH paying it out. A payment to the V2 pair the next V2 swap
spends as already paid is a hop, not a payout. Otherwise it reads Min. paid
out, with Paid to lines.
Model: opus-5-5
Each Universal Router address now carries the mask its own source reads a
command's type with: 0x1f for UniversalRouterV1, 0x3f for V1_2 and V2, 0x7f
for V2_1_1 and V2_1_2. The fixed 0x1f dropped the 0x20 bit, so
EXECUTE_SUB_PLAN (0x21) was listed as a V3 exact-out swap. A sub-plan step is
now listed as "Execute Sub-Plan (its steps are not shown)". Its commands are
not read and may spend from or pay the user wherever the step stands, so with
one the summary names no swap direction, Token In and Token Out read
"Unknown (could not be decoded)", and there is no Amount or Min. received.
Model: opus-5-5
The Universal Router decoder recognised execute() by its selector alone, so
the same calldata sent to any address was described as a swap through the
router. It now keeps the router deployments Uniswap publishes for Ethereum
Mainnet and Sepolia, and decodes only a transaction sent to one of them on
its network, ignoring address case. TxApproval passes the transaction's
chain id, TransactionDetail the active network's.
Model: opus-5-5
A V4 step's input side is what SETTLE or SETTLE_ALL names, else the one
currency its swap actions spend and never buy; its output side is what
TAKE or TAKE_ALL names, else the one they buy and never spend. Amount sums
the amountIn of the actions spending the input side, shown only when each
states one; Min. received likewise. An unread swap action leaves the sides
to SETTLE, SETTLE_ALL, TAKE and TAKE_ALL, with no figure. A step with a
swap action always sets the output side, sets the input side only if no
earlier step did, and leaves a side its rules cannot name unknown, with no
figure. SWAP_EXACT_OUT spends its first path entry.
Model: opus-5-5
The four V4 swap actions are read only as the structs deployed on mainnet
and Sepolia. ethers read the newer v4-periphery structs, which add
minHopPriceX36, as the deployed ones, and the newer multi-hop exact-in
struct showed the offset of its hop-price array as the swap amount. A
decode now counts only when encoding it again gives back the same bytes.
A swap action that fails that marks its step "V4 Swap (could not be
decoded)", and a side its SETTLE or TAKE did not name reads "Unknown
(could not be decoded)". The wait and error screens no longer show the
ETH value as the amount of a swap whose amount was not read, unless the
swap is paid in native ETH.
Model: opus-5-5
decode() rendered the Deadline line with toISOString(), which throws on a
date past 275760-09-13, the last a JavaScript date can hold. A later
deadline, such as the uint256 maximum, therefore left the whole swap
undecoded, with nothing saying why. That line now reads
"After 275760-09-13 00:00:00 (no deadline in practice)".
Model: opus-5-5
A V2 exact-in amountIn of zero is the router's ALREADY_PAID marker: an
earlier step sent the tokens to the pair and the swap spends all of them.
Amount showed 0.0000 for it; it now reads "Whatever an earlier step sent
to the pair (V2 already paid)", in the style of the V4 open delta line.
A BALANCE_CHECK_ERC20 passes whenever the balance is at least minBalance,
so a zero one guarantees nothing. It now sets the output side only when
that side holds no minimum at the point the check is reached; a nonzero
one sets the output side as before.
README's Display Consistency text and TODO.md are updated to match.
Model: opus-5-5
decode() had no arm for Universal Router command 0x09, so the approval
screen showed no token or amount for it. It now takes the path's first
token and amountInMax as the input side, the last token and amountOut as
the output side. With such a step, the Amount figure reads "Up to
<amount>" whichever step set it, on the approval, wait, success and error
screens, unless it reads "Unlimited", as an unbounded PERMIT2_PERMIT does,
or "All available (V4 open delta)". In every swap, UNWRAP_WETH makes
Token Out ETH only when the output side is WETH, on mainnet or Sepolia, or
no step set it; otherwise the output keeps its own token and figure.
decodeV2SwapExactOut() loses its eslint-disable comment.
Model: opus-5-5
Token and amount were gated on truthiness and gated independently. An address is never falsy once set but 0n is, so a hop supplying a zero amount fixed the token permanently while leaving the amount open, and the next hop's figure was rendered against the first hop's token at that token's scale -- 0.5 WETH shown as 500000000000.0000 USDT. Nine defective gates are now presence checks, and fourteen address gates were converted defensively so a sixth instance of this class cannot grow.
Zero is not one thing. Established from v4-periphery: OPEN_DELTA is 0 and V4Router substitutes the full credit unconditionally, so a zero V4 exact-in amount means "swap the whole balance" and now reads "All available (V4 open delta)" rather than 0.0000, which would assert the exact inverse. amountOutMinimum gets no such mapping and universal-router special-cases only CONTRACT_BALANCE, so a zero minimum and a zero V2/V3 amount stay literal -- a zero floor reads "None (no minimum guaranteed)".
closes#364
Adds a test that constructs a Uniswap V4 USDT→USDC swap using
SETTLE/SWAP_EXACT_IN_SINGLE/TAKE sub-actions inside a V4_SWAP command.
Without decodeV4Swap(), the output token would be unresolvable and the
swap name would not show 'USDT → USDC'. This test fails on the old code
and passes with the decodeV4Swap() fix.
Refs: #59
Replace stub error handlers with full approval flow for personal_sign,
eth_sign, eth_signTypedData_v4, and eth_signTypedData. Uses toolbar
popup only (no fallback window) and keeps sign approvals pending across
popup close/reopen cycles so the user can respond via the toolbar icon.
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