Make BlockNumber optional.

rpc/src/v1/impls/eth.rs

@@ -35,6 +35,7 @@ use v1::traits::{Eth, EthFilter};
 use v1::types::{Block, BlockTransactions, BlockNumber, Bytes, SyncStatus, SyncInfo, Transaction, TransactionRequest, CallRequest, OptionalValue, Index, Filter, Log, Receipt};
 use v1::helpers::{PollFilter, PollManager, ExternalMinerService, ExternalMiner};
 use util::keys::store::AccountProvider;
+use serde;
 
 fn default_gas() -> U256 {
 	U256::from(21_000)
@@ -199,6 +200,27 @@ impl<C, S, A, M, EM> EthClient<C, S, A, M, EM>
 
 const MAX_QUEUE_SIZE_TO_MINE_ON: usize = 4;	// because uncles go back 6.
 
+fn params_len(params: &Params) -> usize {
+	match params {
+		&Params::Array(ref vec) => vec.len(),
+		_ => 0,
+	}
+}
+
+fn from_params_discard_second<F>(params: Params) -> Result<(F,), Error> where F: serde::de::Deserialize {
+	match params_len(&params) {
+		1 => from_params::<(F, )>(params),
+		_ => from_params::<(F, BlockNumber)>(params).map(|(f, _block_number)| (f, )),
+	}
+}
+
+fn from_params_discard_third<F1, F2>(params: Params) -> Result<(F1, F2,), Error> where F1: serde::de::Deserialize, F2: serde::de::Deserialize {
+	match params_len(&params) {
+		2 => from_params::<(F1, F2, )>(params),
+		_ => from_params::<(F1, F2, BlockNumber)>(params).map(|(f1, f2, _block_number)| (f1, f2, )),
+	}
+}
+
 impl<C, S, A, M, EM> Eth for EthClient<C, S, A, M, EM>
 	where C: BlockChainClient + 'static,
 		  S: SyncProvider + 'static,
@@ -278,19 +300,18 @@ impl<C, S, A, M, EM> Eth for EthClient<C, S, A, M, EM>
 	}
 
 	fn balance(&self, params: Params) -> Result<Value, Error> {
-		from_params::<(Address, BlockNumber)>(params)
+		from_params_discard_second(params).and_then(|(address, )|
-			.and_then(|(address, _block_number)| to_value(&take_weak!(self.client).balance(&address)))
+			to_value(&take_weak!(self.client).balance(&address)))
 	}
 
 	fn storage_at(&self, params: Params) -> Result<Value, Error> {
-		from_params::<(Address, U256, BlockNumber)>(params)
+		from_params_discard_third::<Address, U256>(params).and_then(|(address, position, )|
-			.and_then(|(address, position, _block_number)|
 			to_value(&U256::from(take_weak!(self.client).storage_at(&address, &H256::from(position)))))
 	}
 
 	fn transaction_count(&self, params: Params) -> Result<Value, Error> {
-		from_params::<(Address, BlockNumber)>(params)
+		from_params_discard_second(params).and_then(|(address, )|
-			.and_then(|(address, _block_number)| to_value(&take_weak!(self.client).nonce(&address)))
+			to_value(&take_weak!(self.client).nonce(&address)))
 	}
 
 	fn block_transaction_count_by_hash(&self, params: Params) -> Result<Value, Error> {
@@ -329,8 +350,7 @@ impl<C, S, A, M, EM> Eth for EthClient<C, S, A, M, EM>
 
 	// TODO: do not ignore block number param
 	fn code_at(&self, params: Params) -> Result<Value, Error> {
-		from_params::<(Address, BlockNumber)>(params)
+		from_params_discard_second(params).and_then(|(address, )|
-			.and_then(|(address, _block_number)|
 			to_value(&take_weak!(self.client).code(&address).map_or_else(Bytes::default, Bytes::new)))
 	}
 
@@ -511,8 +531,7 @@ impl<C, S, A, M, EM> Eth for EthClient<C, S, A, M, EM>
 	}
 
 	fn call(&self, params: Params) -> Result<Value, Error> {
-		from_params::<(CallRequest, BlockNumber)>(params)
+		from_params_discard_second(params).and_then(|(request, )| {
-			.and_then(|(request, _block_number)| {
 			let client = take_weak!(self.client);
 			let accounts = take_weak!(self.accounts);
 			let signed = Self::sign_call(&client, &accounts, request);
@@ -525,8 +544,7 @@ impl<C, S, A, M, EM> Eth for EthClient<C, S, A, M, EM>
 	}
 
 	fn estimate_gas(&self, params: Params) -> Result<Value, Error> {
-		from_params::<(CallRequest, BlockNumber)>(params)
+		from_params_discard_second(params).and_then(|(request, )| {
-			.and_then(|(request, _block_number)| {
 			let client = take_weak!(self.client);
 			let accounts = take_weak!(self.accounts);
 			let signed = Self::sign_call(&client, &accounts, request);

rpc/src/v1/tests/eth.rs

@@ -334,6 +334,37 @@ fn rpc_eth_call() {
 	assert_eq!(tester.io.handle_request(request), Some(response.to_owned()));
 }
 
+#[test]
+fn rpc_eth_call_default_block() {
+	let tester = EthTester::default();
+	tester.client.set_execution_result(Executed {
+		gas: U256::zero(),
+		gas_used: U256::from(0xff30),
+		refunded: U256::from(0x5),
+		cumulative_gas_used: U256::zero(),
+		logs: vec![],
+		contracts_created: vec![],
+		output: vec![0x12, 0x34, 0xff],
+	});
+
+	let request = r#"{
+		"jsonrpc": "2.0",
+		"method": "eth_call",
+		"params": [{
+			"from": "0xb60e8dd61c5d32be8058bb8eb970870f07233155",
+			"to": "0xd46e8dd67c5d32be8058bb8eb970870f07244567",
+			"gas": "0x76c0",
+			"gasPrice": "0x9184e72a000",
+			"value": "0x9184e72a",
+			"data": "0xd46e8dd67c5d32be8d46e8dd67c5d32be8058bb8eb970870f072445675058bb8eb970870f072445675"
+		}],
+		"id": 1
+	}"#;
+	let response = r#"{"jsonrpc":"2.0","result":"0x1234ff","id":1}"#;
+
+	assert_eq!(tester.io.handle_request(request), Some(response.to_owned()));
+}
+
 #[test]
 fn rpc_eth_estimate_gas() {
 	let tester = EthTester::default();
@@ -367,6 +398,37 @@ fn rpc_eth_estimate_gas() {
 	assert_eq!(tester.io.handle_request(request), Some(response.to_owned()));
 }
 
+#[test]
+fn rpc_eth_estimate_gas_default_block() {
+	let tester = EthTester::default();
+	tester.client.set_execution_result(Executed {
+		gas: U256::zero(),
+		gas_used: U256::from(0xff30),
+		refunded: U256::from(0x5),
+		cumulative_gas_used: U256::zero(),
+		logs: vec![],
+		contracts_created: vec![],
+		output: vec![0x12, 0x34, 0xff],
+	});
+
+	let request = r#"{
+		"jsonrpc": "2.0",
+		"method": "eth_estimateGas",
+		"params": [{
+			"from": "0xb60e8dd61c5d32be8058bb8eb970870f07233155",
+			"to": "0xd46e8dd67c5d32be8058bb8eb970870f07244567",
+			"gas": "0x76c0",
+			"gasPrice": "0x9184e72a000",
+			"value": "0x9184e72a",
+			"data": "0xd46e8dd67c5d32be8d46e8dd67c5d32be8058bb8eb970870f072445675058bb8eb970870f072445675"
+		}],
+		"id": 1
+	}"#;
+	let response = r#"{"jsonrpc":"2.0","result":"0xff35","id":1}"#;
+
+	assert_eq!(tester.io.handle_request(request), Some(response.to_owned()));
+}
+
 #[test]
 #[ignore]
 fn rpc_eth_send_transaction() {
@@ -476,7 +538,7 @@ fn rpc_eth_compile_serpent() {
 
 #[test]
 fn returns_no_work_if_cant_mine() {
-	let mut eth_tester = EthTester::default();
+	let eth_tester = EthTester::default();
 	eth_tester.client.set_queue_size(10);
 
 	let request = r#"{"jsonrpc": "2.0", "method": "eth_getWork", "params": [], "id": 1}"#;

rpc/src/v1/tests/web3.rs

@@ -38,8 +38,6 @@ fn rpc_web3_sha3() {
 	let io = IoHandler::new();
 	io.add_delegate(web3);
 
-	let v = version().to_owned().replace("Parity/", "Parity//");
-
 	let request = r#"{"jsonrpc": "2.0", "method": "web3_sha3", "params": ["0x00"], "id": 1}"#;
 	let response = r#"{"jsonrpc":"2.0","result":"0xbc36789e7a1e281436464229828f817d6612f7b477d66591ff96a9e064bcc98a","id":1}"#;
 
@@ -52,8 +50,6 @@ fn rpc_web3_sha3_wiki() {
 	let io = IoHandler::new();
 	io.add_delegate(web3);
 
-	let v = version().to_owned().replace("Parity/", "Parity//");
-
 	let request = r#"{"jsonrpc": "2.0", "method": "web3_sha3", "params": ["0x68656c6c6f20776f726c64"], "id": 1}"#;
 	let response = r#"{"jsonrpc":"2.0","result":"0x47173285a8d7341e5e972fc677286384f802f8ef42a5ec5f03bbfa254cb01fad","id":1}"#;
 

rpc/src/v1/types/call_request.rs

@@ -35,9 +35,8 @@ mod tests {
 	use std::str::FromStr;
 	use rustc_serialize::hex::FromHex;
 	use serde_json;
-	use util::numbers::{Uint, U256};
+	use util::numbers::{U256};
 	use util::hash::Address;
-	use ethcore::transaction::{Transaction, Action};
 	use v1::types::Bytes;
 	use super::*;
 

rpc/src/v1/types/transaction_request.rs

@@ -35,9 +35,8 @@ mod tests {
 	use std::str::FromStr;
 	use rustc_serialize::hex::FromHex;
 	use serde_json;
-	use util::numbers::{Uint, U256};
+	use util::numbers::{U256};
 	use util::hash::Address;
-	use ethcore::transaction::{Transaction, Action};
 	use v1::types::Bytes;
 	use super::*;