Decoding

Be sure to read the prerequisites to decoding.

Decoding is done via the ABIDecoder:

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{{#include ../../../examples/codec/src/lib.rs:decoding_example}}

First into a Token, then via the Tokenizable trait, into the desired type.

If the type came from abigen! (or uses the ::fuels::macros::TryFrom derivation) then you can also use try_into to convert bytes into a type that implements both Parameterize and Tokenizable:

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{{#include ../../../examples/codec/src/lib.rs:decoding_example_try_into}}

Under the hood, try_from_bytes is being called, which does what the preceding example did.

Configuring the decoder

The decoder can be configured to limit its resource expenditure:

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{{#include ../../../examples/codec/src/lib.rs:configuring_the_decoder}}

For an explanation of each configuration value visit the DecoderConfig.

The default values for the DecoderConfig are:

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{{#include ../../../packages/fuels-core/src/codec/abi_decoder.rs:default_decoder_config}}

You can also configure the decoder used to decode the return value of the contract method:

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{{#include ../../../examples/contracts/src/lib.rs:contract_decoder_config}}

The same method is available for script calls.