core, core/state, trie: EIP158, reprice & skip empty account write

This commit implements EIP158 part 1, 2, 3 & 4

1. If an account is empty it's no longer written to the trie. An empty
  account is defined as (balance=0, nonce=0, storage=0, code=0).
2. Delete an empty account if it's touched
3. An empty account is redefined as either non-existent or empty.
4. Zero value calls and zero value suicides no longer consume the 25k
  reation costs.

params: moved core/config to params

Signed-off-by: Jeffrey Wilcke <jeffrey@ethereum.org>

1 files changed, 16 insertions, 15 deletions

diff --git a/cmd/utils/flags.go b/cmd/utils/flags.go
index 626c2615d..641ff6d40 100644
--- a/cmd/utils/flags.go
+++ b/cmd/utils/flags.go
@@ -801,7 +801,7 @@ func SetupNetwork(ctx *cli.Context) {
 }
 
 // MakeChainConfig reads the chain configuration from the database in ctx.Datadir.
-func MakeChainConfig(ctx *cli.Context, stack *node.Node) *core.ChainConfig {
+func MakeChainConfig(ctx *cli.Context, stack *node.Node) *params.ChainConfig {
 	db := MakeChainDatabase(ctx, stack)
 	defer db.Close()
 
@@ -809,9 +809,9 @@ func MakeChainConfig(ctx *cli.Context, stack *node.Node) *core.ChainConfig {
 }
 
 // MakeChainConfigFromDb reads the chain configuration from the given database.
-func MakeChainConfigFromDb(ctx *cli.Context, db ethdb.Database) *core.ChainConfig {
+func MakeChainConfigFromDb(ctx *cli.Context, db ethdb.Database) *params.ChainConfig {
 	// If the chain is already initialized, use any existing chain configs
-	config := new(core.ChainConfig)
+	config := new(params.ChainConfig)
 
 	genesis := core.GetBlock(db, core.GetCanonicalHash(db, 0), 0)
 	if genesis != nil {
@@ -849,19 +849,20 @@ func MakeChainConfigFromDb(ctx *cli.Context, db ethdb.Database) *core.ChainConfi
 			}
 			config.DAOForkSupport = true
 		}
-		if config.HomesteadGasRepriceBlock == nil {
-			if ctx.GlobalBool(TestNetFlag.Name) {
-				config.HomesteadGasRepriceBlock = params.TestNetHomesteadGasRepriceBlock
-			} else {
-				config.HomesteadGasRepriceBlock = params.MainNetHomesteadGasRepriceBlock
-			}
+		config.DAOForkSupport = true
+	}
+	if config.EIP150Block == nil {
+		if ctx.GlobalBool(TestNetFlag.Name) {
+			config.EIP150Block = params.TestNetHomesteadGasRepriceBlock
+		} else {
+			config.EIP150Block = params.MainNetHomesteadGasRepriceBlock
 		}
-		if config.HomesteadGasRepriceHash == (common.Hash{}) {
-			if ctx.GlobalBool(TestNetFlag.Name) {
-				config.HomesteadGasRepriceHash = params.TestNetHomesteadGasRepriceHash
-			} else {
-				config.HomesteadGasRepriceHash = params.MainNetHomesteadGasRepriceHash
-			}
+	}
+	if config.EIP150Hash == (common.Hash{}) {
+		if ctx.GlobalBool(TestNetFlag.Name) {
+			config.EIP150Hash = params.TestNetHomesteadGasRepriceHash
+		} else {
+			config.EIP150Hash = params.MainNetHomesteadGasRepriceHash
 		}
 	}
 	// Force override any existing configs if explicitly requested