Rename buy_gas

substrate/runtime/contract/src/gas.rs

@@ -87,7 +87,7 @@ impl<U: SimpleArithmetic + Copy> GasMeter<U> {
 	}
 }
 
-pub fn pay_for_gas<T: Trait>(
+pub fn buy_gas<T: Trait>(
 	transactor: &T::AccountId,
 	gas_limit: T::Gas,
 	gas_price: T::Balance,

substrate/runtime/contract/src/lib.rs

@@ -165,7 +165,7 @@ impl<T: Trait> Module<T> {
 		// NOTE: it is very important to avoid any state changes before
 		// paying for the gas.
 		// TODO: Get gas price from the storage
-		let mut gas_meter = gas::pay_for_gas::<T>(aux, gas_limit, gas_price)?;
+		let mut gas_meter = gas::buy_gas::<T>(aux, gas_limit, gas_price)?;
 
 		let mut overlay = OverlayAccountDb::<T>::new(&account_db::DirectAccountDb);
 
@@ -208,7 +208,7 @@ impl<T: Trait> Module<T> {
 		// NOTE: it is very important to avoid any state changes before
 		// paying for the gas.
 		// TODO: Get gas price from the storage
-		let mut gas_meter = gas::pay_for_gas::<T>(aux, gas_limit, gas_price)?;
+		let mut gas_meter = gas::buy_gas::<T>(aux, gas_limit, gas_price)?;
 
 		let mut overlay = OverlayAccountDb::<T>::new(&account_db::DirectAccountDb);