# Precomputed Calls

Add `precomputedCalls` as a third option to `state` and `stateDiff`. This would be a simple, gas-perfect, mapping of input data to output data with no calculations. It is an array of `precomputedCall` objects

* `input` - either a hex string or `"*"`. The former must match the call exactly, and the latter matches all calls.
* `output` - the resulting output bytes as hex. If absent it is presumed to be zero bytes.
* `gas` - The gas to charge for the call. If there is not enough gas passed in as part of the call then standard OutOfGas handling applies. If absent `MAX_GAS` is presumed. (alternately, required)
* `status` - If the call should fail a `0x0` should be present. If it passes `0x1`. For success calls output is the result, for failed it is the revert data.

For each address only one wildcard is permitted, and only one `input` per mapping is permitted. (alternately, we could structure this as a map where input is key, but it would reduce readability)

{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "eth_multicallV1",
    "params": [
        {
            "blockStateCalls": [
                {
                    "stateOverrides": {
                        "0x0000000000000000000000000000000000000001": {
                            "precomputedCalls" : [
                                {
                                    "input": "0x1c8aff950685c2ed4bc3174f3472287b56d9517b9c948127319a09a7a36deac8000000000000000000000000000000000000000000000000000000000000001cb7cf302145348387b9e69fde82d8e634a0f8761e78da3bfa059efced97cbed0d2a66b69167cafe0ccfc726aec6ee393fea3cf0e4f3f9c394705e0f56d9bfe1c9",
                                    "output":"0xb11cad98ad3f8114e0b3a1f6e7228bc8424df48a",
                                    "gas":3000
                                }, 
                                {
                                    "input": "0x456e9aea5e197a1f1af7a3e85a3212fa4049a3ba34c2289b4c860fc0b0c64ef3000000000000000000000000000000000000000000000000000000000000001c9242685bf161793cc25603c231bc2f568eb630ea16aa137d2664ac80388256084f8ae3bd7535248d0bd448298cc2e2071e56992d0774dc340c368ae950852ada",
                                    "output":"0x7156526fbd7a3c72969b54f64e42c10fbb768c8a",
                                    "gas":3000
                                }, 
                                {
                                    "input": "*",
                                    "otuput": "0x",
                                    "gas":3000,
                                    "status": "0x0"
                                }
                            ]
                        },
                        "0xc100000000000000000000000000000000000000": {
                            "balance": "0x30d40"
                        }
                    },
                    "calls": [
                        {
                            "from": "0xc100000000000000000000000000000000000000",
                            "to": "0x0000000000000000000000000000000000000001",
                            "input": "0x1c8aff950685c2ed4bc3174f3472287b56d9517b9c948127319a09a7a36deac8000000000000000000000000000000000000000000000000000000000000001cb7cf302145348387b9e69fde82d8e634a0f8761e78da3bfa059efced97cbed0d2a66b69167cafe0ccfc726aec6ee393fea3cf0e4f3f9c394705e0f56d9bfe1c9"
                        },
                        {
                            "from": "0xc100000000000000000000000000000000000000",
                            "to": "0x0000000000000000000000000000000000000001",
                            "input": "0x0badca11"
                        }
                    ]
                }
            ]
        },
        "latest"
    ]
}

result

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": [
        {
            "number": "0x4",
            "hash": "0x9a19680b1e4b0307f4199ecdafe36c9c328d3c331e682e66c52a5694cee5f20b",
            "timestamp": "0x1f",
            "gasLimit": "0x4c4b40",
            "gasUsed": "0x2dbc4",
            "feeRecipient": "0x0000000000000000000000000000000000000000",
            "baseFeePerGas": "0x2310a91d",
            "prevRandao": "0x0000000000000000000000000000000000000000000000000000000000000000",
            "calls": [
                {
                    "returnData": "0xb11cad98ad3f8114e0b3a1f6e7228bc8424df48a",
                    "logs": [],
                    "gasUsed": "0x644c", // likely incorrect
                    "status": "0x1"
                },
                {
                    "returnData": "0x",
                    "logs": [],
                    "gasUsed": "0xb4fe", // likely incorrect
                    "status": "0x0"
                }
            ]
        }
    ]
}