parse-tx too expensive

[friedger]

Calling read-only function parse-tx fails with

Error: Unchecked(CostBalanceExceeded(ExecutionCost { write_length: 0, write_count: 0, read_length: 42572, read_count: 3, runtime: 1001249000 }, ExecutionCost { write_length: 0, write_count: 0, read_length: 100000, read_count: 30, runtime: 1000000000 }))
    parseReadOnlyResponse utils.ts:198

This was already mentioned in stacksgov/grants-program#92 (comment)

[jcnelson]

I'm not surprised. The code here is meant to demonstrate feasibility of parsing Clarity code, but there is more work that needs to be done in the VM to make certain functions cheaper. For example, Stacks 2.1 will have a cheap way to read byte slices out of a buff, which would remove all the expensive calls to index-of.

What was the transaction you tried to parse?

[friedger]

PoX tx on testnet: https://api.blockcypher.com/v1/btc/test3/txs/7ad9187efd4fa01ce8690015a1a711d7958f18c248fb4c47a32d00732cfc4a61?limit=50&includeHex=true

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