Private accounts are not able to change the state of public accounts. When transferValue is called in MessageCallProcessor it attempts to get a mutable account. This is only required when a transfer of value is happening. If a transfer of value from a private contract to a public contract is attempted an error will be thrown.
Signed-off-by: Antony Denyer <git@antonydenyer.co.uk>
* Extract gas cost calculation for Balance, ExtCodeCopy, ExtCodeHash, ExtCodeSize operations into cost function.
* Allow cost function to be called by an outside library
Signed-off-by: failfmi <oscurocalma@gmail.com>
Migrate ExceptionalHaltReason to an interface from an enum. The enum
made it difficult for downstream implementations to add custom reasons
as to why the EVM has halted. Switching to an interface is needed
because enums are final and not extensible.
Signed-off-by: Danno Ferrin <danno.ferrin@gmail.com>
Raise the visibility of AbstractCreateOperation's constructor to
protected from package so that create operations outside the library can
re-use the existing code.
Signed-off-by: Danno Ferrin <danno.ferrin@gmail.com>
Broad reaching optimizations to speed up EVM calculations
* Generally speaking, use int and long where it is more appropriate than UInt256 (memory indexes mostly)
* Move the internal stack to Bytes from UInt256
* Re-work the flow of many operations to account for the above
Signed-off-by: Danno Ferrin <danno.ferrin@gmail.com>
Move EVM to a standalone module
Move the EVM classes to a standalone module. This is mostly moves but
some API re-resign to peel out some features not essential to the EVM,
such as privacy support and ties to the data storage subsystem.
Signed-off-by: Danno Ferrin <danno.ferrin@gmail.com>
Sally MacFarlane
Justin Florentine
Antony Denyer
failfmi
Danno Ferrin