Exceptions

In some cases, the contract's execution might fail. The current chapter describes the list of possible in-contract failures.

Error
Description

Dex/reentrancy

It is prohibited to call the exchange until the previous operation is finished.

Dex/function-not-set

The code for the entrypoint doesn't exist in the bigmap. Should be unreachable.

Dex/not-entered

The contract can't be called until the previous method execution isn't finished.

Dex/not-self

The method should be called by the exchange contract only.

Dex/not-token

The token doesn't implement the standard entrypoint.

Dex/not-close-entrypoint

The exchange contract doesn't have close entrypoint. Should be unreachable.

Dex/not-launched

The exchange for the pair isn't launched.

Dex/no-liquidity

Action can't be performed if there is no liquidity in the pool.

Dex/no-token-a-in

The amount of invested token A can't be zero.

Dex/no-token-b-in

The amount of invested token B can't be zero.

Dex/pair-exist

The exchange can't be launched if it already exists.

Dex/wrong-route

The exchange route isn't cohesive.

Dex/zero-amount-in

Invest of zero tokens on one of the sides is not allowed.

Dex/insufficient-shares

Not enough shares to burn.

Dex/dust-output

One or all divested token amounts are zero.

Dex/high-min-out

The expected output is higher than the possible.

Dex/wrong-pair-order

The tokens should be provided in ascending order.

Dex/empty-route

The provided exchange route is empty.

Dex/low-max-token-a-in

The max amount of token A to deposit for the shares is insufficient.

Dex/low-max-token-b-in

The amount of token B to withdraw for the shares is too low.

Dex/action-outdated

The operation isn't outdated.

Dex/wrong-reserves-state

After divest, some reserves and total shares aren't all zero or aren't all non-zero values. Should be unreachable.

Dex/low-supply

The amount of divested shares is higher than the total supply. Should be unreachable.

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