core: added basic chain configuration

Added chain configuration options and write out during genesis database
insertion. If no "config" was found, nothing is written to the database.

Configurations are written on a per genesis base. This means
that any chain (which is identified by it's genesis hash) can have their
own chain settings.

1 files changed, 16 insertions, 7 deletions

diff --git a/core/state_processor.go b/core/state_processor.go
index 38cd0e675..441f6a7a8 100644
--- a/core/state_processor.go
+++ b/core/state_processor.go
@@ -16,12 +16,21 @@ var (
 	big32 = big.NewInt(32)
 )
 
+// StateProcessor is a basic Processor, which takes care of transitioning
+// state from one point to another.
+//
+// StateProcessor implements Processor.
 type StateProcessor struct {
-	bc *BlockChain
+	config *ChainConfig
+	bc     *BlockChain
 }
 
-func NewStateProcessor(bc *BlockChain) *StateProcessor {
-	return &StateProcessor{bc}
+// NewStateProcessor initialises a new StateProcessor.
+func NewStateProcessor(config *ChainConfig, bc *BlockChain) *StateProcessor {
+	return &StateProcessor{
+		config: config,
+		bc:     bc,
+	}
 }
 
 // Process processes the state changes according to the Ethereum rules by running
@@ -31,7 +40,7 @@ func NewStateProcessor(bc *BlockChain) *StateProcessor {
 // Process returns the receipts and logs accumulated during the process and
 // returns the amount of gas that was used in the process. If any of the
 // transactions failed to execute due to insufficient gas it will return an error.
-func (p *StateProcessor) Process(block *types.Block, statedb *state.StateDB, cfg *vm.Config) (types.Receipts, vm.Logs, *big.Int, error) {
+func (p *StateProcessor) Process(block *types.Block, statedb *state.StateDB, cfg vm.Config) (types.Receipts, vm.Logs, *big.Int, error) {
 	var (
 		receipts     types.Receipts
 		totalUsedGas = big.NewInt(0)
@@ -43,7 +52,7 @@ func (p *StateProcessor) Process(block *types.Block, statedb *state.StateDB, cfg
 
 	for i, tx := range block.Transactions() {
 		statedb.StartRecord(tx.Hash(), block.Hash(), i)
-		receipt, logs, _, err := ApplyTransaction(p.bc, gp, statedb, header, tx, totalUsedGas, cfg)
+		receipt, logs, _, err := ApplyTransaction(p.config, p.bc, gp, statedb, header, tx, totalUsedGas, cfg)
 		if err != nil {
 			return nil, nil, totalUsedGas, err
 		}
@@ -60,8 +69,8 @@ func (p *StateProcessor) Process(block *types.Block, statedb *state.StateDB, cfg
 //
 // ApplyTransactions returns the generated receipts and vm logs during the
 // execution of the state transition phase.
-func ApplyTransaction(bc *BlockChain, gp *GasPool, statedb *state.StateDB, header *types.Header, tx *types.Transaction, usedGas *big.Int, cfg *vm.Config) (*types.Receipt, vm.Logs, *big.Int, error) {
-	_, gas, err := ApplyMessage(NewEnv(statedb, bc, tx, header, cfg), tx, gp)
+func ApplyTransaction(config *ChainConfig, bc *BlockChain, gp *GasPool, statedb *state.StateDB, header *types.Header, tx *types.Transaction, usedGas *big.Int, cfg vm.Config) (*types.Receipt, vm.Logs, *big.Int, error) {
+	_, gas, err := ApplyMessage(NewEnv(statedb, config, bc, tx, header, cfg), tx, gp)
 	if err != nil {
 		return nil, nil, nil, err
 	}