Jamie Lokier 1574136a25

Precompiles: Change precompile tests to use fixtureCallEvm ...

Move the EVM setup and call in precompile tests to `fixtureCallEvm` in
`call_evm`.  Extra return values needed for testing are returned specially, and
the convention for reporting gas used is changed to match `asmCallEvm`.

Although the precompile tests used `execPrecompiles` before, `executeOpcodes`
does perfectly well as a substitute, allowing `fixtureCallEvm` to be shared.

_Significantly, this patch also makes `Computation` more or less an internal
type of the EVM now._

Nothing outside the EVM (except `call_evm`) needs access any more to
`Computation`, `execComputation`, `executeOpcodes` or `execPrecompiles`.
Many imports can be trimmed, some files removed, and EVMC is much closer.

(As a bonus, the functions in `call_evm` reveal what capabilities parts of the
program have needed over time, makes certain bugs and inconsistencies clearer,
and suggests how to refactor into a more useful shared entry point.)

Signed-off-by: Jamie Lokier <jamie@shareable.org>

2021-05-05 02:31:46 +01:00

..

call_evm.nim

Precompiles: Change precompile tests to use fixtureCallEvm

2021-05-05 02:31:46 +01:00