EIP 2028: transaction gas lowered from 68 to 16 (#10987)

ethcore/src/spec/spec.rs

@@ -123,6 +123,8 @@ pub struct CommonParams {
 	pub eip1283_disable_transition: BlockNumber,
 	/// Number of first block where EIP-1014 rules begin.
 	pub eip1014_transition: BlockNumber,
+	/// Number of first block where EIP-2028 rules begin.
+	pub eip2028_transition: BlockNumber,
 	/// Number of first block where dust cleanup rules (EIP-168 and EIP169) begin.
 	pub dust_protection_transition: BlockNumber,
 	/// Nonce cap increase per block. Nonce cap is only checked if dust protection is enabled.
@@ -190,6 +192,9 @@ impl CommonParams {
 		schedule.have_bitwise_shifting = block_number >= self.eip145_transition;
 		schedule.have_extcodehash = block_number >= self.eip1052_transition;
 		schedule.eip1283 = block_number >= self.eip1283_transition && !(block_number >= self.eip1283_disable_transition);
+		if block_number >= self.eip2028_transition {
+			schedule.tx_data_non_zero_gas = 16;
+		}
 		if block_number >= self.eip210_transition {
 			schedule.blockhash_gas = 800;
 		}
@@ -308,6 +313,10 @@ impl From<ethjson::spec::Params> for CommonParams {
 				BlockNumber::max_value,
 				Into::into,
 			),
+			eip2028_transition: p.eip2028_transition.map_or_else(
+				BlockNumber::max_value,
+				Into::into,
+			),
 			dust_protection_transition: p.dust_protection_transition.map_or_else(
 				BlockNumber::max_value,
 				Into::into,