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npm install -g ethereumjs-codesim
ethereumjs-codesim -C -f echo-test.sol --use-contract 'Echo' --callmethod 'Test(bytes32)' 'echo'
TODO: translate this into a system for the CLAM blockchain
The darkclam hypervisor manages:
* storage/memory management
* checkpoints / history
* magnet system
* eXtended/abi/cmd/json/system xajs
* gas management
* rpc system
* extended ABI system (new types)
Input -
Magnet - magnet links as data input
Output -
Function - an specially encoded function call, can be used to call code in other VMs
* dependencies
* x-vm communication
where new DCVM(Buffer bytecode, Buffer trie, Object abi)
(note, this constructor is ussually called from the Hypervisor)
bytecode - The VM bytecode, loaded from the [package-name].vm file
trie - The previous VM state, a Patricia Merkle Tree expressed as a Buffer
abi - The abi definition as a JavaScript Object, loaded from the [package-name].json file
DCVM.run(Object block, Integer index, Array args, Function cb(Buffer trie, Error err, Buffer return, Integer gasUsed, Array logs), Integer value)
(note, uses automatic ABI system, to make functions more dynamic)
block - the Block containing this transaction (encoded and sent to the Function)
index - the index of this transaction in the block (encoded and sent to the Function)
args[0] - The function name (entry point)
args[1 - ARG_LIMIT] - The arguments for the function (automatically encoded)
cb -
trie - The next VM state (hypervisor manages confirmations with a run/rewind system backed by the checkpoint system), a Patricia Merkle Tree expressed as a Buffer; if err return lastState :)
err - Graceful failing for VMs
return - Buffer data to return to the Hypervisor (for x-vm communication and direct function calling)
gasused - Amount of gas used running the selected function, passed back to Hypervisor for x-vm communication
logs - An Array of logs spit out by the function code
value - The value transacted (default 0)