git.delta.rocks / unique-network / refs/commits / 7d542e4157ec

difftreelog

refac: rename string -> String

Trubnikov Sergey2023-01-18parent: #a4ecd38.patch.diff
in: master

16 files changed

modifiedcrates/evm-coder/procedural/src/solidity_interface.rsdiffbeforeafterboth
--- a/crates/evm-coder/procedural/src/solidity_interface.rs
+++ b/crates/evm-coder/procedural/src/solidity_interface.rs
@@ -999,7 +999,7 @@
 						)*),
 					};
 
-					let mut out = ::evm_coder::types::string::new();
+					let mut out = ::evm_coder::types::String::new();
 					if #solidity_name.starts_with("Inline") {
 						out.push_str("/// @dev inlined interface\n");
 					}
modifiedcrates/evm-coder/procedural/src/to_log.rsdiffbeforeafterboth
--- a/crates/evm-coder/procedural/src/to_log.rs
+++ b/crates/evm-coder/procedural/src/to_log.rs
@@ -222,7 +222,7 @@
 							#solidity_functions,
 						)*),
 					};
-					let mut out = string::new();
+					let mut out = ::evm_coder::types::String::new();
 					out.push_str("/// @dev inlined interface\n");
 					let _ = interface.format(is_impl, &mut out, tc);
 					tc.collect(out);
modifiedcrates/evm-coder/src/abi/impls.rsdiffbeforeafterboth
--- a/crates/evm-coder/src/abi/impls.rs
+++ b/crates/evm-coder/src/abi/impls.rs
@@ -63,7 +63,7 @@
 impl_abi!(u128, uint128, false);
 impl_abi!(U256, uint256, false);
 impl_abi!(H160, address, false);
-impl_abi!(string, string, true);
+impl_abi!(String, string, true);
 
 impl_abi_writeable!(&str, string);
 
modifiedcrates/evm-coder/src/abi/mod.rsdiffbeforeafterboth
--- a/crates/evm-coder/src/abi/mod.rs
+++ b/crates/evm-coder/src/abi/mod.rs
@@ -148,8 +148,8 @@
 	}
 
 	/// Read [`string`] at current position, then advance
-	pub fn string(&mut self) -> Result<string> {
-		string::from_utf8(self.bytes()?).map_err(|_| Error::Error(ExitError::InvalidRange))
+	pub fn string(&mut self) -> Result<String> {
+		String::from_utf8(self.bytes()?).map_err(|_| Error::Error(ExitError::InvalidRange))
 	}
 
 	/// Read [`u8`] at current position, then advance
modifiedcrates/evm-coder/src/abi/test.rsdiffbeforeafterboth
--- a/crates/evm-coder/src/abi/test.rs
+++ b/crates/evm-coder/src/abi/test.rs
@@ -138,7 +138,7 @@
 
 #[test]
 fn encode_decode_vec_tuple_uint256_string() {
-	test_impl::<Vec<(U256, string)>>(
+	test_impl::<Vec<(U256, String)>>(
         0xdeadbeef,
         vec![
             (1.into(), "Test URI 0".to_string()),
@@ -261,7 +261,7 @@
 	let (call, mut decoder) = AbiReader::new_call(encoded_data).unwrap();
 	assert_eq!(call, u32::to_be_bytes(decoded_data.0));
 	let address = decoder.address().unwrap();
-	let data = <Vec<(U256, string)>>::abi_read(&mut decoder).unwrap();
+	let data = <Vec<(U256, String)>>::abi_read(&mut decoder).unwrap();
 	assert_eq!(data, decoded_data.1);
 
 	let mut writer = AbiWriter::new_call(decoded_data.0);
@@ -273,7 +273,7 @@
 
 #[test]
 fn encode_decode_vec_tuple_string_bytes() {
-	test_impl::<Vec<(string, bytes)>>(
+	test_impl::<Vec<(String, bytes)>>(
 		0xdeadbeef,
 		vec![
 			(
modifiedcrates/evm-coder/src/lib.rsdiffbeforeafterboth
before · crates/evm-coder/src/lib.rs
1// Copyright 2019-2022 Unique Network (Gibraltar) Ltd.2// This file is part of Unique Network.34// Unique Network is free software: you can redistribute it and/or modify5// it under the terms of the GNU General Public License as published by6// the Free Software Foundation, either version 3 of the License, or7// (at your option) any later version.89// Unique Network is distributed in the hope that it will be useful,10// but WITHOUT ANY WARRANTY; without even the implied warranty of11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the12// GNU General Public License for more details.1314// You should have received a copy of the GNU General Public License15// along with Unique Network. If not, see <http://www.gnu.org/licenses/>.1617#![doc = include_str!("../README.md")]18#![deny(missing_docs)]19#![macro_use]20#![cfg_attr(not(feature = "std"), no_std)]21#[cfg(not(feature = "std"))]22extern crate alloc;2324use abi::{AbiRead, AbiReader, AbiWriter};25pub use evm_coder_procedural::{event_topic, fn_selector};26pub mod abi;27pub use events::{ToLog, ToTopic};28use execution::DispatchInfo;29pub mod execution;30#[macro_use]31pub mod custom_signature;3233/// Derives call enum implementing [`crate::Callable`], [`crate::Weighted`]34/// and [`crate::Call`] from impl block.35///36/// ## Macro syntax37///38/// `#[solidity_interface(name, is, inline_is, events)]`39/// - *name* - used in generated code, and for Call enum name40/// - *is* - used to provide inheritance in Solidity41/// - *inline_is* - same as `is`, but ERC165::SupportsInterface will work differently: For `is` SupportsInterface(A) will return true42///   if A is one of the interfaces the contract is inherited from (e.g. B is created as `is(A)`). If B is created as `inline_is(A)`43///   SupportsInterface(A) will internally create a new interface that combines all methods of A and B, so SupportsInterface(A) will return44///   false.45///46/// `#[weight(value)]`47/// Can be added to every method of impl block, used for deriving [`crate::Weighted`], which48/// is used by substrate bridge.49/// - *value*: expression, which evaluates to weight required to call this method.50/// This expression can use call arguments to calculate non-constant execution time.51/// This expression should evaluate faster than actual execution does, and may provide worse case52/// than one is called.53///54/// `#[solidity_interface(rename_selector)]`55/// - *rename_selector* - by default, selector name will be generated by transforming method name56/// from snake_case to camelCase. Use this option, if other naming convention is required.57/// I.e: method `token_uri` will be automatically renamed to `tokenUri` in selector, but name58/// required by ERC721 standard is `tokenURI`, thus we need to specify `rename_selector = "tokenURI"`59/// explicitly.60///61/// Both contract and contract methods may have doccomments, which will end up in a generated62/// solidity interface file, thus you should use [solidity syntax](https://docs.soliditylang.org/en/latest/natspec-format.html) for writing documentation in this macro63///64/// ## Example65///66/// ```ignore67/// struct SuperContract;68/// struct InlineContract;69/// struct Contract;70///71/// #[derive(ToLog)]72/// enum ContractEvents {73///     Event(#[indexed] uint32),74/// }75///76/// /// @dev This contract provides function to multiply two numbers77/// #[solidity_interface(name = MyContract, is(SuperContract), inline_is(InlineContract))]78/// impl Contract {79///     /// Multiply two numbers80///     /// @param a First number81///     /// @param b Second number82///     /// @return uint32 Product of two passed numbers83///     /// @dev This function returns error in case of overflow84///     #[weight(200 + a + b)]85///     #[solidity_interface(rename_selector = "mul")]86///     fn mul(&mut self, a: uint32, b: uint32) -> Result<uint32> {87///         Ok(a.checked_mul(b).ok_or("overflow")?)88///     }89/// }90/// ```91pub use evm_coder_procedural::solidity_interface;92/// See [`solidity_interface`]93pub use evm_coder_procedural::solidity;94/// See [`solidity_interface`]95pub use evm_coder_procedural::weight;96pub use evm_coder_procedural::AbiCoder;97pub use sha3_const;9899/// Derives [`ToLog`] for enum100///101/// Selectors will be derived from variant names, there is currently no way to have custom naming102/// for them103///104/// `#[indexed]`105/// Marks this field as indexed, so it will appear in [`ethereum::Log`] topics instead of data106pub use evm_coder_procedural::ToLog;107108// Api of those modules shouldn't be consumed directly, it is only exported for usage in proc macros109#[doc(hidden)]110pub mod events;111#[doc(hidden)]112#[cfg(feature = "stubgen")]113pub mod solidity;114115/// Sealed traits.116pub mod sealed {117	/// Not every type should be directly placed in vec.118	/// Vec encoding is not memory efficient, as every item will be padded119	/// to 32 bytes.120	/// Instead you should use specialized types (`bytes` in case of `Vec<u8>`)121	pub trait CanBePlacedInVec {}122}123124/// Solidity type definitions (aliases from solidity name to rust type)125/// To be used in [`solidity_interface`] definitions, to make sure there is no126/// type conflict between Rust code and generated definitions127pub mod types {128	#![allow(non_camel_case_types, missing_docs)]129130	#[cfg(not(feature = "std"))]131	use alloc::{vec::Vec};132	use primitive_types::{U256, H160, H256};133134	pub type Address = H160;135	pub type Bytes4 = [u8; 4];136	pub type Topic = H256;137138	#[cfg(not(feature = "std"))]139	pub type string = ::alloc::string::String;140	#[cfg(feature = "std")]141	pub type string = ::std::string::String;142143	#[derive(Default, Debug, PartialEq, Eq, Clone)]144	pub struct bytes(pub Vec<u8>);145146	//#region Special types147	/// Makes function payable148	pub type value = U256;149	/// Makes function caller-sensitive150	pub type caller = Address;151	//#endregion152153	/// Ethereum typed call message, similar to solidity154	/// `msg` object.155	pub struct Msg<C> {156		pub call: C,157		/// Address of user, which called this contract.158		pub caller: H160,159		/// Payment amount to contract.160		/// Contract should reject payment, if target call is not payable,161		/// and there is no `receiver()` function defined.162		pub value: U256,163	}164165	impl From<Vec<u8>> for bytes {166		fn from(src: Vec<u8>) -> Self {167			Self(src)168		}169	}170171	#[allow(clippy::from_over_into)]172	impl Into<Vec<u8>> for bytes {173		fn into(self) -> Vec<u8> {174			self.0175		}176	}177178	impl bytes {179		#[must_use]180		pub fn len(&self) -> usize {181			self.0.len()182		}183184		#[must_use]185		pub fn is_empty(&self) -> bool {186			self.len() == 0187		}188	}189}190191/// Parseable EVM call, this trait should be implemented with [`solidity_interface`] macro192pub trait Call: Sized {193	/// Parse call buffer into typed call enum194	fn parse(selector: types::Bytes4, input: &mut AbiReader) -> execution::Result<Option<Self>>;195}196197/// Intended to be used as `#[weight]` output type198/// Should be same between evm-coder and substrate to avoid confusion199///200/// Isn't same thing as gas, some mapping is required between those types201pub type Weight = frame_support::weights::Weight;202203/// In substrate, we have benchmarking, which allows204/// us to not rely on gas metering, but instead predict amount of gas to execute call205pub trait Weighted: Call {206	/// Predict weight of this call207	fn weight(&self) -> DispatchInfo;208}209210/// Type callable with ethereum message, may be implemented by [`solidity_interface`] macro211/// on interface implementation, or for externally-owned real EVM contract212pub trait Callable<C: Call> {213	/// Call contract using specified call data214	fn call(&mut self, call: types::Msg<C>) -> execution::ResultWithPostInfo<AbiWriter>;215}216217/// Implementation of ERC165 is implicitly generated for all interfaces in [`solidity_interface`],218/// this structure holds parsed data for ERC165Call subvariant219///220/// Note: no [`Callable`] implementation is provided, call implementation is inlined into every221/// implementing contract222///223/// See <https://eips.ethereum.org/EIPS/eip-165>224#[derive(Debug)]225pub enum ERC165Call {226	/// ERC165 provides single method, which returns true, if contract227	/// implements specified interface228	SupportsInterface {229		/// Requested interface230		interface_id: types::Bytes4,231	},232}233234impl ERC165Call {235	/// ERC165 selector is provided by standard236	pub const INTERFACE_ID: types::Bytes4 = u32::to_be_bytes(0x01ffc9a7);237}238239impl Call for ERC165Call {240	fn parse(selector: types::Bytes4, input: &mut AbiReader) -> execution::Result<Option<Self>> {241		if selector != Self::INTERFACE_ID {242			return Ok(None);243		}244		Ok(Some(Self::SupportsInterface {245			interface_id: types::Bytes4::abi_read(input)?,246		}))247	}248}249250/// Generate "tests", which will generate solidity code on execution and print it to stdout251/// Script at .maintain/scripts/generate_api.sh can split this output from test runtime252///253/// This macro receives type usage as second argument, but you can use anything as generics,254/// because no bounds are implied255#[macro_export]256macro_rules! generate_stubgen {257	($name:ident, $decl:ty, $is_impl:literal) => {258		#[cfg(feature = "stubgen")]259		#[test]260		#[ignore]261		fn $name() {262			use evm_coder::solidity::TypeCollector;263			let mut out = TypeCollector::new();264			<$decl>::generate_solidity_interface(&mut out, $is_impl);265			println!("=== SNIP START ===");266			println!("// SPDX-License-Identifier: OTHER");267			println!("// This code is automatically generated");268			println!();269			println!("pragma solidity >=0.8.0 <0.9.0;");270			println!();271			for b in out.finish() {272				println!("{}", b);273			}274			println!("=== SNIP END ===");275		}276	};277}278279#[cfg(test)]280mod tests {281	use super::*;282283	#[test]284	fn function_selector_generation() {285		assert_eq!(fn_selector!(transfer(address, uint256)), 0xa9059cbb);286	}287288	#[test]289	fn event_topic_generation() {290		assert_eq!(291			hex::encode(&event_topic!(Transfer(address, address, uint256))[..]),292			"ddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",293		);294	}295}
after · crates/evm-coder/src/lib.rs
1// Copyright 2019-2022 Unique Network (Gibraltar) Ltd.2// This file is part of Unique Network.34// Unique Network is free software: you can redistribute it and/or modify5// it under the terms of the GNU General Public License as published by6// the Free Software Foundation, either version 3 of the License, or7// (at your option) any later version.89// Unique Network is distributed in the hope that it will be useful,10// but WITHOUT ANY WARRANTY; without even the implied warranty of11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the12// GNU General Public License for more details.1314// You should have received a copy of the GNU General Public License15// along with Unique Network. If not, see <http://www.gnu.org/licenses/>.1617#![doc = include_str!("../README.md")]18#![deny(missing_docs)]19#![macro_use]20#![cfg_attr(not(feature = "std"), no_std)]21#[cfg(not(feature = "std"))]22extern crate alloc;2324use abi::{AbiRead, AbiReader, AbiWriter};25pub use evm_coder_procedural::{event_topic, fn_selector};26pub mod abi;27pub use events::{ToLog, ToTopic};28use execution::DispatchInfo;29pub mod execution;30#[macro_use]31pub mod custom_signature;3233/// Derives call enum implementing [`crate::Callable`], [`crate::Weighted`]34/// and [`crate::Call`] from impl block.35///36/// ## Macro syntax37///38/// `#[solidity_interface(name, is, inline_is, events)]`39/// - *name* - used in generated code, and for Call enum name40/// - *is* - used to provide inheritance in Solidity41/// - *inline_is* - same as `is`, but ERC165::SupportsInterface will work differently: For `is` SupportsInterface(A) will return true42///   if A is one of the interfaces the contract is inherited from (e.g. B is created as `is(A)`). If B is created as `inline_is(A)`43///   SupportsInterface(A) will internally create a new interface that combines all methods of A and B, so SupportsInterface(A) will return44///   false.45///46/// `#[weight(value)]`47/// Can be added to every method of impl block, used for deriving [`crate::Weighted`], which48/// is used by substrate bridge.49/// - *value*: expression, which evaluates to weight required to call this method.50/// This expression can use call arguments to calculate non-constant execution time.51/// This expression should evaluate faster than actual execution does, and may provide worse case52/// than one is called.53///54/// `#[solidity_interface(rename_selector)]`55/// - *rename_selector* - by default, selector name will be generated by transforming method name56/// from snake_case to camelCase. Use this option, if other naming convention is required.57/// I.e: method `token_uri` will be automatically renamed to `tokenUri` in selector, but name58/// required by ERC721 standard is `tokenURI`, thus we need to specify `rename_selector = "tokenURI"`59/// explicitly.60///61/// Both contract and contract methods may have doccomments, which will end up in a generated62/// solidity interface file, thus you should use [solidity syntax](https://docs.soliditylang.org/en/latest/natspec-format.html) for writing documentation in this macro63///64/// ## Example65///66/// ```ignore67/// struct SuperContract;68/// struct InlineContract;69/// struct Contract;70///71/// #[derive(ToLog)]72/// enum ContractEvents {73///     Event(#[indexed] uint32),74/// }75///76/// /// @dev This contract provides function to multiply two numbers77/// #[solidity_interface(name = MyContract, is(SuperContract), inline_is(InlineContract))]78/// impl Contract {79///     /// Multiply two numbers80///     /// @param a First number81///     /// @param b Second number82///     /// @return uint32 Product of two passed numbers83///     /// @dev This function returns error in case of overflow84///     #[weight(200 + a + b)]85///     #[solidity_interface(rename_selector = "mul")]86///     fn mul(&mut self, a: uint32, b: uint32) -> Result<uint32> {87///         Ok(a.checked_mul(b).ok_or("overflow")?)88///     }89/// }90/// ```91pub use evm_coder_procedural::solidity_interface;92/// See [`solidity_interface`]93pub use evm_coder_procedural::solidity;94/// See [`solidity_interface`]95pub use evm_coder_procedural::weight;96pub use evm_coder_procedural::AbiCoder;97pub use sha3_const;9899/// Derives [`ToLog`] for enum100///101/// Selectors will be derived from variant names, there is currently no way to have custom naming102/// for them103///104/// `#[indexed]`105/// Marks this field as indexed, so it will appear in [`ethereum::Log`] topics instead of data106pub use evm_coder_procedural::ToLog;107108// Api of those modules shouldn't be consumed directly, it is only exported for usage in proc macros109#[doc(hidden)]110pub mod events;111#[doc(hidden)]112#[cfg(feature = "stubgen")]113pub mod solidity;114115/// Sealed traits.116pub mod sealed {117	/// Not every type should be directly placed in vec.118	/// Vec encoding is not memory efficient, as every item will be padded119	/// to 32 bytes.120	/// Instead you should use specialized types (`bytes` in case of `Vec<u8>`)121	pub trait CanBePlacedInVec {}122}123124/// Solidity type definitions (aliases from solidity name to rust type)125/// To be used in [`solidity_interface`] definitions, to make sure there is no126/// type conflict between Rust code and generated definitions127pub mod types {128	#![allow(non_camel_case_types, missing_docs)]129130	#[cfg(not(feature = "std"))]131	use alloc::{vec::Vec};132	use primitive_types::{U256, H160, H256};133134	pub type Address = H160;135	pub type Bytes4 = [u8; 4];136	pub type Topic = H256;137138	#[cfg(not(feature = "std"))]139	pub type String = ::alloc::string::String;140	#[cfg(feature = "std")]141	pub type String = ::std::string::String;142143	#[derive(Default, Debug, PartialEq, Eq, Clone)]144	pub struct bytes(pub Vec<u8>);145146	//#region Special types147	/// Makes function payable148	pub type value = U256;149	/// Makes function caller-sensitive150	pub type caller = Address;151	//#endregion152153	/// Ethereum typed call message, similar to solidity154	/// `msg` object.155	pub struct Msg<C> {156		pub call: C,157		/// Address of user, which called this contract.158		pub caller: H160,159		/// Payment amount to contract.160		/// Contract should reject payment, if target call is not payable,161		/// and there is no `receiver()` function defined.162		pub value: U256,163	}164165	impl From<Vec<u8>> for bytes {166		fn from(src: Vec<u8>) -> Self {167			Self(src)168		}169	}170171	#[allow(clippy::from_over_into)]172	impl Into<Vec<u8>> for bytes {173		fn into(self) -> Vec<u8> {174			self.0175		}176	}177178	impl bytes {179		#[must_use]180		pub fn len(&self) -> usize {181			self.0.len()182		}183184		#[must_use]185		pub fn is_empty(&self) -> bool {186			self.len() == 0187		}188	}189}190191/// Parseable EVM call, this trait should be implemented with [`solidity_interface`] macro192pub trait Call: Sized {193	/// Parse call buffer into typed call enum194	fn parse(selector: types::Bytes4, input: &mut AbiReader) -> execution::Result<Option<Self>>;195}196197/// Intended to be used as `#[weight]` output type198/// Should be same between evm-coder and substrate to avoid confusion199///200/// Isn't same thing as gas, some mapping is required between those types201pub type Weight = frame_support::weights::Weight;202203/// In substrate, we have benchmarking, which allows204/// us to not rely on gas metering, but instead predict amount of gas to execute call205pub trait Weighted: Call {206	/// Predict weight of this call207	fn weight(&self) -> DispatchInfo;208}209210/// Type callable with ethereum message, may be implemented by [`solidity_interface`] macro211/// on interface implementation, or for externally-owned real EVM contract212pub trait Callable<C: Call> {213	/// Call contract using specified call data214	fn call(&mut self, call: types::Msg<C>) -> execution::ResultWithPostInfo<AbiWriter>;215}216217/// Implementation of ERC165 is implicitly generated for all interfaces in [`solidity_interface`],218/// this structure holds parsed data for ERC165Call subvariant219///220/// Note: no [`Callable`] implementation is provided, call implementation is inlined into every221/// implementing contract222///223/// See <https://eips.ethereum.org/EIPS/eip-165>224#[derive(Debug)]225pub enum ERC165Call {226	/// ERC165 provides single method, which returns true, if contract227	/// implements specified interface228	SupportsInterface {229		/// Requested interface230		interface_id: types::Bytes4,231	},232}233234impl ERC165Call {235	/// ERC165 selector is provided by standard236	pub const INTERFACE_ID: types::Bytes4 = u32::to_be_bytes(0x01ffc9a7);237}238239impl Call for ERC165Call {240	fn parse(selector: types::Bytes4, input: &mut AbiReader) -> execution::Result<Option<Self>> {241		if selector != Self::INTERFACE_ID {242			return Ok(None);243		}244		Ok(Some(Self::SupportsInterface {245			interface_id: types::Bytes4::abi_read(input)?,246		}))247	}248}249250/// Generate "tests", which will generate solidity code on execution and print it to stdout251/// Script at .maintain/scripts/generate_api.sh can split this output from test runtime252///253/// This macro receives type usage as second argument, but you can use anything as generics,254/// because no bounds are implied255#[macro_export]256macro_rules! generate_stubgen {257	($name:ident, $decl:ty, $is_impl:literal) => {258		#[cfg(feature = "stubgen")]259		#[test]260		#[ignore]261		fn $name() {262			use evm_coder::solidity::TypeCollector;263			let mut out = TypeCollector::new();264			<$decl>::generate_solidity_interface(&mut out, $is_impl);265			println!("=== SNIP START ===");266			println!("// SPDX-License-Identifier: OTHER");267			println!("// This code is automatically generated");268			println!();269			println!("pragma solidity >=0.8.0 <0.9.0;");270			println!();271			for b in out.finish() {272				println!("{}", b);273			}274			println!("=== SNIP END ===");275		}276	};277}278279#[cfg(test)]280mod tests {281	use super::*;282283	#[test]284	fn function_selector_generation() {285		assert_eq!(fn_selector!(transfer(address, uint256)), 0xa9059cbb);286	}287288	#[test]289	fn event_topic_generation() {290		assert_eq!(291			hex::encode(&event_topic!(Transfer(address, address, uint256))[..]),292			"ddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",293		);294	}295}
modifiedcrates/evm-coder/src/solidity/impls.rsdiffbeforeafterboth
--- a/crates/evm-coder/src/solidity/impls.rs
+++ b/crates/evm-coder/src/solidity/impls.rs
@@ -29,7 +29,7 @@
 	U256 => "uint256" true = "0",
 	Bytes4 => "bytes4" true = "bytes4(0)",
 	H160 => "address" true = "0x0000000000000000000000000000000000000000",
-	string => "string" false = "\"\"",
+	String => "string" false = "\"\"",
 	bytes => "bytes" false = "hex\"\"",
 	bool => "bool" true = "false",
 }
@@ -72,10 +72,10 @@
 macro_rules! impl_tuples {
 	($($ident:ident)+) => {
 		impl<$($ident: SolidityTypeName + 'static),+> SolidityTupleTy for ($($ident,)+) {
-			fn fields(tc: &TypeCollector) -> Vec<string> {
+			fn fields(tc: &TypeCollector) -> Vec<String> {
 				let mut collected = Vec::with_capacity(Self::len());
 				$({
-					let mut out = string::new();
+					let mut out = String::new();
 					$ident::solidity_name(&mut out, tc).expect("no fmt error");
 					collected.push(out);
 				})*;
modifiedcrates/evm-coder/src/solidity/mod.rsdiffbeforeafterboth
--- a/crates/evm-coder/src/solidity/mod.rs
+++ b/crates/evm-coder/src/solidity/mod.rs
@@ -26,7 +26,7 @@
 mod impls;
 
 #[cfg(not(feature = "std"))]
-use alloc::{string::String, vec::Vec, collections::BTreeMap, format};
+use alloc::{vec::Vec, collections::BTreeMap, format};
 #[cfg(feature = "std")]
 use std::collections::BTreeMap;
 use core::{
@@ -42,16 +42,16 @@
 pub struct TypeCollector {
 	/// Code => id
 	/// id ordering is required to perform topo-sort on the resulting data
-	structs: RefCell<BTreeMap<string, usize>>,
-	anonymous: RefCell<BTreeMap<Vec<string>, usize>>,
-	// generic: RefCell<BTreeMap<string, usize>>,
+	structs: RefCell<BTreeMap<String, usize>>,
+	anonymous: RefCell<BTreeMap<Vec<String>, usize>>,
+	// generic: RefCell<BTreeMap<String, usize>>,
 	id: Cell<usize>,
 }
 impl TypeCollector {
 	pub fn new() -> Self {
 		Self::default()
 	}
-	pub fn collect(&self, item: string) {
+	pub fn collect(&self, item: String) {
 		let id = self.next_id();
 		self.structs.borrow_mut().insert(item, id);
 	}
@@ -84,7 +84,7 @@
 	pub fn collect_enum<T: SolidityEnumTy>(&self) -> String {
 		T::generate_solidity_interface(self)
 	}
-	pub fn finish(self) -> Vec<string> {
+	pub fn finish(self) -> Vec<String> {
 		let mut data = self.structs.into_inner().into_iter().collect::<Vec<_>>();
 		data.sort_by_key(|(_, id)| Reverse(*id));
 		data.into_iter().map(|(code, _)| code).collect()
modifiedpallets/common/src/erc.rsdiffbeforeafterboth
--- a/pallets/common/src/erc.rs
+++ b/pallets/common/src/erc.rs
@@ -94,7 +94,7 @@
 	/// @param value Propery value.
 	#[solidity(hide)]
 	#[weight(<SelfWeightOf<T>>::set_collection_properties(1))]
-	fn set_collection_property(&mut self, caller: caller, key: string, value: bytes) -> Result<()> {
+	fn set_collection_property(&mut self, caller: caller, key: String, value: bytes) -> Result<()> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let key = <Vec<u8>>::from(key)
 			.try_into()
@@ -130,7 +130,7 @@
 	/// @param key Property key.
 	#[solidity(hide)]
 	#[weight(<SelfWeightOf<T>>::delete_collection_properties(1))]
-	fn delete_collection_property(&mut self, caller: caller, key: string) -> Result<()> {
+	fn delete_collection_property(&mut self, caller: caller, key: String) -> Result<()> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let key = <Vec<u8>>::from(key)
 			.try_into()
@@ -143,7 +143,7 @@
 	///
 	/// @param keys Properties keys.
 	#[weight(<SelfWeightOf<T>>::delete_collection_properties(keys.len() as u32))]
-	fn delete_collection_properties(&mut self, caller: caller, keys: Vec<string>) -> Result<()> {
+	fn delete_collection_properties(&mut self, caller: caller, keys: Vec<String>) -> Result<()> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let keys = keys
 			.into_iter()
@@ -164,7 +164,7 @@
 	///
 	/// @param key Property key.
 	/// @return bytes The property corresponding to the key.
-	fn collection_property(&self, key: string) -> Result<bytes> {
+	fn collection_property(&self, key: String) -> Result<bytes> {
 		let key = <Vec<u8>>::from(key)
 			.try_into()
 			.map_err(|_| "key too large")?;
@@ -179,7 +179,7 @@
 	///
 	/// @param keys Properties keys. Empty keys for all propertyes.
 	/// @return Vector of properties key/value pairs.
-	fn collection_properties(&self, keys: Vec<string>) -> Result<Vec<eth::Property>> {
+	fn collection_properties(&self, keys: Vec<String>) -> Result<Vec<eth::Property>> {
 		let keys = keys
 			.into_iter()
 			.map(|key| {
@@ -616,7 +616,7 @@
 	/// Returns collection type
 	///
 	/// @return `Fungible` or `NFT` or `ReFungible`
-	fn unique_collection_type(&self) -> Result<string> {
+	fn unique_collection_type(&self) -> Result<String> {
 		let mode = match self.collection.mode {
 			CollectionMode::Fungible(_) => "Fungible",
 			CollectionMode::NFT => "NFT",
modifiedpallets/common/src/eth.rsdiffbeforeafterboth
--- a/pallets/common/src/eth.rs
+++ b/pallets/common/src/eth.rs
@@ -118,7 +118,7 @@
 /// Ethereum representation of collection [`PropertyKey`](up_data_structs::PropertyKey) and [`PropertyValue`](up_data_structs::PropertyValue).
 #[derive(Debug, Default, AbiCoder)]
 pub struct Property {
-	key: evm_coder::types::string,
+	key: evm_coder::types::String,
 	value: evm_coder::types::bytes,
 }
 
@@ -126,7 +126,7 @@
 	type Error = evm_coder::execution::Error;
 
 	fn try_from(from: up_data_structs::Property) -> Result<Self, Self::Error> {
-		let key = evm_coder::types::string::from_utf8(from.key.into())
+		let key = evm_coder::types::String::from_utf8(from.key.into())
 			.map_err(|e| Self::Error::Revert(format!("utf8 conversion error: {}", e)))?;
 		let value = evm_coder::types::bytes(from.value.to_vec());
 		Ok(Property { key, value })
@@ -342,7 +342,7 @@
 #[derive(Debug, Default, AbiCoder)]
 pub struct TokenPropertyPermission {
 	/// Token property key.
-	key: evm_coder::types::string,
+	key: evm_coder::types::String,
 	/// Token property permissions.
 	permissions: Vec<PropertyPermission>,
 }
@@ -360,7 +360,7 @@
 		),
 	) -> Self {
 		let (key, permission) = value;
-		let key = evm_coder::types::string::from_utf8(key.into_inner())
+		let key = evm_coder::types::String::from_utf8(key.into_inner())
 			.expect("Stored key must be valid");
 		let permissions = PropertyPermission::into_vec(permission);
 		Self { key, permissions }
modifiedpallets/fungible/src/erc.rsdiffbeforeafterboth
--- a/pallets/fungible/src/erc.rs
+++ b/pallets/fungible/src/erc.rs
@@ -59,13 +59,13 @@
 
 #[solidity_interface(name = ERC20, events(ERC20Events))]
 impl<T: Config> FungibleHandle<T> {
-	fn name(&self) -> Result<string> {
+	fn name(&self) -> Result<String> {
 		Ok(decode_utf16(self.name.iter().copied())
 			.map(|r| r.unwrap_or(REPLACEMENT_CHARACTER))
-			.collect::<string>())
+			.collect::<String>())
 	}
-	fn symbol(&self) -> Result<string> {
-		Ok(string::from_utf8_lossy(&self.token_prefix).into())
+	fn symbol(&self) -> Result<String> {
+		Ok(String::from_utf8_lossy(&self.token_prefix).into())
 	}
 	fn total_supply(&self) -> Result<U256> {
 		self.consume_store_reads(1)?;
@@ -167,10 +167,10 @@
 	T::AccountId: From<[u8; 32]>,
 {
 	/// @notice A description for the collection.
-	fn description(&self) -> Result<string> {
+	fn description(&self) -> Result<String> {
 		Ok(decode_utf16(self.description.iter().copied())
 			.map(|r| r.unwrap_or(REPLACEMENT_CHARACTER))
-			.collect::<string>())
+			.collect::<String>())
 	}
 
 	#[weight(<SelfWeightOf<T>>::create_item())]
modifiedpallets/nonfungible/src/erc.rsdiffbeforeafterboth
--- a/pallets/nonfungible/src/erc.rs
+++ b/pallets/nonfungible/src/erc.rs
@@ -64,7 +64,7 @@
 	fn set_token_property_permission(
 		&mut self,
 		caller: caller,
-		key: string,
+		key: String,
 		is_mutable: bool,
 		collection_admin: bool,
 		token_owner: bool,
@@ -123,7 +123,7 @@
 		&mut self,
 		caller: caller,
 		token_id: U256,
-		key: string,
+		key: String,
 		value: bytes,
 	) -> Result<()> {
 		let caller = T::CrossAccountId::from_eth(caller);
@@ -187,7 +187,7 @@
 	/// @param key Property key.
 	#[solidity(hide)]
 	#[weight(<SelfWeightOf<T>>::delete_token_properties(1))]
-	fn delete_property(&mut self, token_id: U256, caller: caller, key: string) -> Result<()> {
+	fn delete_property(&mut self, token_id: U256, caller: caller, key: String) -> Result<()> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let token_id: u32 = token_id.try_into().map_err(|_| "token id overflow")?;
 		let key = <Vec<u8>>::from(key)
@@ -211,7 +211,7 @@
 		&mut self,
 		token_id: U256,
 		caller: caller,
-		keys: Vec<string>,
+		keys: Vec<String>,
 	) -> Result<()> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let token_id: u32 = token_id.try_into().map_err(|_| "token id overflow")?;
@@ -239,7 +239,7 @@
 	/// @param tokenId ID of the token.
 	/// @param key Property key.
 	/// @return Property value bytes
-	fn property(&self, token_id: U256, key: string) -> Result<bytes> {
+	fn property(&self, token_id: U256, key: String) -> Result<bytes> {
 		let token_id: u32 = token_id.try_into().map_err(|_| "token id overflow")?;
 		let key = <Vec<u8>>::from(key)
 			.try_into()
@@ -301,14 +301,14 @@
 	/// @notice A descriptive name for a collection of NFTs in this contract
 	/// @dev real implementation of this function lies in `ERC721UniqueExtensions`
 	#[solidity(hide, rename_selector = "name")]
-	fn name_proxy(&self) -> Result<string> {
+	fn name_proxy(&self) -> Result<String> {
 		self.name()
 	}
 
 	/// @notice An abbreviated name for NFTs in this contract
 	/// @dev real implementation of this function lies in `ERC721UniqueExtensions`
 	#[solidity(hide, rename_selector = "symbol")]
-	fn symbol_proxy(&self) -> Result<string> {
+	fn symbol_proxy(&self) -> Result<String> {
 		self.symbol()
 	}
 
@@ -322,7 +322,7 @@
 	///
 	/// @return token's const_metadata
 	#[solidity(rename_selector = "tokenURI")]
-	fn token_uri(&self, token_id: U256) -> Result<string> {
+	fn token_uri(&self, token_id: U256) -> Result<String> {
 		let token_id_u32: u32 = token_id.try_into().map_err(|_| "token id overflow")?;
 
 		match get_token_property(self, token_id_u32, &key::url()).as_deref() {
@@ -335,7 +335,7 @@
 		let base_uri =
 			pallet_common::Pallet::<T>::get_collection_property(self.id, &key::base_uri())
 				.map(BoundedVec::into_inner)
-				.map(string::from_utf8)
+				.map(String::from_utf8)
 				.transpose()
 				.map_err(|e| {
 					Error::Revert(alloc::format!(
@@ -595,7 +595,7 @@
 		&mut self,
 		caller: caller,
 		to: Address,
-		token_uri: string,
+		token_uri: String,
 	) -> Result<U256> {
 		let token_id: U256 = <TokensMinted<T>>::get(self.id)
 			.checked_add(1)
@@ -618,7 +618,7 @@
 		caller: caller,
 		to: Address,
 		token_id: U256,
-		token_uri: string,
+		token_uri: String,
 	) -> Result<bool> {
 		let key = key::url();
 		let permission = get_token_permission::<T>(self.id, &key)?;
@@ -670,12 +670,12 @@
 	collection: &CollectionHandle<T>,
 	token_id: u32,
 	key: &up_data_structs::PropertyKey,
-) -> Result<string> {
+) -> Result<String> {
 	collection.consume_store_reads(1)?;
 	let properties = <TokenProperties<T>>::try_get((collection.id, token_id))
 		.map_err(|_| Error::Revert("Token properties not found".into()))?;
 	if let Some(property) = properties.get(key) {
-		return Ok(string::from_utf8_lossy(property).into());
+		return Ok(String::from_utf8_lossy(property).into());
 	}
 
 	Err("Property tokenURI not found".into())
@@ -691,7 +691,7 @@
 		.get(key)
 		.map(Clone::clone)
 		.ok_or_else(|| {
-			let key = string::from_utf8(key.clone().into_inner()).unwrap_or_default();
+			let key = String::from_utf8(key.clone().into_inner()).unwrap_or_default();
 			Error::Revert(alloc::format!("No permission for key {}", key))
 		})?;
 	Ok(a)
@@ -704,22 +704,22 @@
 	T::AccountId: From<[u8; 32]> + AsRef<[u8; 32]>,
 {
 	/// @notice A descriptive name for a collection of NFTs in this contract
-	fn name(&self) -> Result<string> {
+	fn name(&self) -> Result<String> {
 		Ok(decode_utf16(self.name.iter().copied())
 			.map(|r| r.unwrap_or(REPLACEMENT_CHARACTER))
-			.collect::<string>())
+			.collect::<String>())
 	}
 
 	/// @notice An abbreviated name for NFTs in this contract
-	fn symbol(&self) -> Result<string> {
-		Ok(string::from_utf8_lossy(&self.token_prefix).into())
+	fn symbol(&self) -> Result<String> {
+		Ok(String::from_utf8_lossy(&self.token_prefix).into())
 	}
 
 	/// @notice A description for the collection.
-	fn description(&self) -> Result<string> {
+	fn description(&self) -> Result<String> {
 		Ok(decode_utf16(self.description.iter().copied())
 			.map(|r| r.unwrap_or(REPLACEMENT_CHARACTER))
-			.collect::<string>())
+			.collect::<String>())
 	}
 
 	/// Returns the owner (in cross format) of the token.
@@ -736,7 +736,7 @@
 	/// @param tokenId Id for the token.
 	/// @param keys Properties keys. Empty keys for all propertyes.
 	/// @return Vector of properties key/value pairs.
-	fn properties(&self, token_id: U256, keys: Vec<string>) -> Result<Vec<eth::Property>> {
+	fn properties(&self, token_id: U256, keys: Vec<String>) -> Result<Vec<eth::Property>> {
 		let keys = keys
 			.into_iter()
 			.map(|key| {
@@ -948,7 +948,7 @@
 		&mut self,
 		caller: caller,
 		to: Address,
-		tokens: Vec<(U256, string)>,
+		tokens: Vec<(U256, String)>,
 	) -> Result<bool> {
 		let key = key::url();
 		let caller = T::CrossAccountId::from_eth(caller);
modifiedpallets/refungible/src/erc.rsdiffbeforeafterboth
--- a/pallets/refungible/src/erc.rs
+++ b/pallets/refungible/src/erc.rs
@@ -67,7 +67,7 @@
 	fn set_token_property_permission(
 		&mut self,
 		caller: caller,
-		key: string,
+		key: String,
 		is_mutable: bool,
 		collection_admin: bool,
 		token_owner: bool,
@@ -126,7 +126,7 @@
 		&mut self,
 		caller: caller,
 		token_id: U256,
-		key: string,
+		key: String,
 		value: bytes,
 	) -> Result<()> {
 		let caller = T::CrossAccountId::from_eth(caller);
@@ -190,7 +190,7 @@
 	/// @param key Property key.
 	#[solidity(hide)]
 	#[weight(<SelfWeightOf<T>>::delete_token_properties(1))]
-	fn delete_property(&mut self, token_id: U256, caller: caller, key: string) -> Result<()> {
+	fn delete_property(&mut self, token_id: U256, caller: caller, key: String) -> Result<()> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let token_id: u32 = token_id.try_into().map_err(|_| "token id overflow")?;
 		let key = <Vec<u8>>::from(key)
@@ -214,7 +214,7 @@
 		&mut self,
 		token_id: U256,
 		caller: caller,
-		keys: Vec<string>,
+		keys: Vec<String>,
 	) -> Result<()> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let token_id: u32 = token_id.try_into().map_err(|_| "token id overflow")?;
@@ -242,7 +242,7 @@
 	/// @param tokenId ID of the token.
 	/// @param key Property key.
 	/// @return Property value bytes
-	fn property(&self, token_id: U256, key: string) -> Result<bytes> {
+	fn property(&self, token_id: U256, key: String) -> Result<bytes> {
 		let token_id: u32 = token_id.try_into().map_err(|_| "token id overflow")?;
 		let key = <Vec<u8>>::from(key)
 			.try_into()
@@ -298,14 +298,14 @@
 	/// @notice A descriptive name for a collection of NFTs in this contract
 	/// @dev real implementation of this function lies in `ERC721UniqueExtensions`
 	#[solidity(hide, rename_selector = "name")]
-	fn name_proxy(&self) -> Result<string> {
+	fn name_proxy(&self) -> Result<String> {
 		self.name()
 	}
 
 	/// @notice An abbreviated name for NFTs in this contract
 	/// @dev real implementation of this function lies in `ERC721UniqueExtensions`
 	#[solidity(hide, rename_selector = "symbol")]
-	fn symbol_proxy(&self) -> Result<string> {
+	fn symbol_proxy(&self) -> Result<String> {
 		self.symbol()
 	}
 
@@ -319,7 +319,7 @@
 	///
 	/// @return token's const_metadata
 	#[solidity(rename_selector = "tokenURI")]
-	fn token_uri(&self, token_id: U256) -> Result<string> {
+	fn token_uri(&self, token_id: U256) -> Result<String> {
 		let token_id_u32: u32 = token_id.try_into().map_err(|_| "token id overflow")?;
 
 		match get_token_property(self, token_id_u32, &key::url()).as_deref() {
@@ -332,7 +332,7 @@
 		let base_uri =
 			pallet_common::Pallet::<T>::get_collection_property(self.id, &key::base_uri())
 				.map(BoundedVec::into_inner)
-				.map(string::from_utf8)
+				.map(String::from_utf8)
 				.transpose()
 				.map_err(|e| {
 					Error::Revert(alloc::format!(
@@ -631,7 +631,7 @@
 		&mut self,
 		caller: caller,
 		to: Address,
-		token_uri: string,
+		token_uri: String,
 	) -> Result<U256> {
 		let token_id: U256 = <TokensMinted<T>>::get(self.id)
 			.checked_add(1)
@@ -654,7 +654,7 @@
 		caller: caller,
 		to: Address,
 		token_id: U256,
-		token_uri: string,
+		token_uri: String,
 	) -> Result<bool> {
 		let key = key::url();
 		let permission = get_token_permission::<T>(self.id, &key)?;
@@ -708,12 +708,12 @@
 	collection: &CollectionHandle<T>,
 	token_id: u32,
 	key: &up_data_structs::PropertyKey,
-) -> Result<string> {
+) -> Result<String> {
 	collection.consume_store_reads(1)?;
 	let properties = <TokenProperties<T>>::try_get((collection.id, token_id))
 		.map_err(|_| Error::Revert("Token properties not found".into()))?;
 	if let Some(property) = properties.get(key) {
-		return Ok(string::from_utf8_lossy(property).into());
+		return Ok(String::from_utf8_lossy(property).into());
 	}
 
 	Err("Property tokenURI not found".into())
@@ -729,7 +729,7 @@
 		.get(key)
 		.map(Clone::clone)
 		.ok_or_else(|| {
-			let key = string::from_utf8(key.clone().into_inner()).unwrap_or_default();
+			let key = String::from_utf8(key.clone().into_inner()).unwrap_or_default();
 			Error::Revert(alloc::format!("No permission for key {}", key))
 		})?;
 	Ok(a)
@@ -742,22 +742,22 @@
 	T::AccountId: From<[u8; 32]> + AsRef<[u8; 32]>,
 {
 	/// @notice A descriptive name for a collection of NFTs in this contract
-	fn name(&self) -> Result<string> {
+	fn name(&self) -> Result<String> {
 		Ok(decode_utf16(self.name.iter().copied())
 			.map(|r| r.unwrap_or(REPLACEMENT_CHARACTER))
-			.collect::<string>())
+			.collect::<String>())
 	}
 
 	/// @notice An abbreviated name for NFTs in this contract
-	fn symbol(&self) -> Result<string> {
-		Ok(string::from_utf8_lossy(&self.token_prefix).into())
+	fn symbol(&self) -> Result<String> {
+		Ok(String::from_utf8_lossy(&self.token_prefix).into())
 	}
 
 	/// @notice A description for the collection.
-	fn description(&self) -> Result<string> {
+	fn description(&self) -> Result<String> {
 		Ok(decode_utf16(self.description.iter().copied())
 			.map(|r| r.unwrap_or(REPLACEMENT_CHARACTER))
-			.collect::<string>())
+			.collect::<String>())
 	}
 
 	/// Returns the owner (in cross format) of the token.
@@ -774,7 +774,7 @@
 	/// @param tokenId Id for the token.
 	/// @param keys Properties keys. Empty keys for all propertyes.
 	/// @return Vector of properties key/value pairs.
-	fn properties(&self, token_id: U256, keys: Vec<string>) -> Result<Vec<eth::Property>> {
+	fn properties(&self, token_id: U256, keys: Vec<String>) -> Result<Vec<eth::Property>> {
 		let keys = keys
 			.into_iter()
 			.map(|key| {
@@ -991,7 +991,7 @@
 		&mut self,
 		caller: caller,
 		to: Address,
-		tokens: Vec<(U256, string)>,
+		tokens: Vec<(U256, String)>,
 	) -> Result<bool> {
 		let key = key::url();
 		let caller = T::CrossAccountId::from_eth(caller);
modifiedpallets/refungible/src/erc_token.rsdiffbeforeafterboth
--- a/pallets/refungible/src/erc_token.rs
+++ b/pallets/refungible/src/erc_token.rs
@@ -92,15 +92,15 @@
 #[solidity_interface(name = ERC20, events(ERC20Events))]
 impl<T: Config> RefungibleTokenHandle<T> {
 	/// @return the name of the token.
-	fn name(&self) -> Result<string> {
+	fn name(&self) -> Result<String> {
 		Ok(decode_utf16(self.name.iter().copied())
 			.map(|r| r.unwrap_or(REPLACEMENT_CHARACTER))
-			.collect::<string>())
+			.collect::<String>())
 	}
 
 	/// @return the symbol of the token.
-	fn symbol(&self) -> Result<string> {
-		Ok(string::from_utf8_lossy(&self.token_prefix).into())
+	fn symbol(&self) -> Result<String> {
+		Ok(String::from_utf8_lossy(&self.token_prefix).into())
 	}
 
 	/// @dev Total number of tokens in existence
modifiedpallets/unique/src/eth/mod.rsdiffbeforeafterboth
--- a/pallets/unique/src/eth/mod.rs
+++ b/pallets/unique/src/eth/mod.rs
@@ -57,9 +57,9 @@
 
 fn convert_data<T: Config>(
 	caller: caller,
-	name: string,
-	description: string,
-	token_prefix: string,
+	name: String,
+	description: String,
+	token_prefix: String,
 ) -> Result<(
 	T::CrossAccountId,
 	CollectionName,
@@ -89,10 +89,10 @@
 fn create_collection_internal<T: Config>(
 	caller: caller,
 	value: value,
-	name: string,
+	name: String,
 	collection_mode: CollectionMode,
-	description: string,
-	token_prefix: string,
+	description: String,
+	token_prefix: String,
 ) -> Result<Address> {
 	let (caller, name, description, token_prefix) =
 		convert_data::<T>(caller, name, description, token_prefix)?;
@@ -151,9 +151,9 @@
 		&mut self,
 		caller: caller,
 		value: value,
-		name: string,
-		description: string,
-		token_prefix: string,
+		name: String,
+		description: String,
+		token_prefix: String,
 	) -> Result<Address> {
 		let (caller, name, description, token_prefix) =
 			convert_data::<T>(caller, name, description, token_prefix)?;
@@ -190,9 +190,9 @@
 		&mut self,
 		caller: caller,
 		value: value,
-		name: string,
-		description: string,
-		token_prefix: string,
+		name: String,
+		description: String,
+		token_prefix: String,
 	) -> Result<Address> {
 		create_collection_internal::<T>(
 			caller,
@@ -210,9 +210,9 @@
 		&mut self,
 		caller: caller,
 		value: value,
-		name: string,
-		description: string,
-		token_prefix: string,
+		name: String,
+		description: String,
+		token_prefix: String,
 	) -> Result<Address> {
 		create_collection_internal::<T>(
 			caller,
@@ -230,10 +230,10 @@
 		&mut self,
 		caller: caller,
 		value: value,
-		name: string,
+		name: String,
 		decimals: u8,
-		description: string,
-		token_prefix: string,
+		description: String,
+		token_prefix: String,
 	) -> Result<Address> {
 		create_collection_internal::<T>(
 			caller,
@@ -250,7 +250,7 @@
 		&mut self,
 		caller: caller,
 		collection: Address,
-		base_uri: string,
+		base_uri: String,
 	) -> Result<()> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let collection =
modifiedruntime/tests/src/tests.rsdiffbeforeafterboth
--- a/runtime/tests/src/tests.rs
+++ b/runtime/tests/src/tests.rs
@@ -323,7 +323,7 @@
 				.map(|d| { d.into() })
 				.collect()
 		));
-		for (index, data) in items_data.into_iter().enumerate() {
+		for (index, _data) in items_data.into_iter().enumerate() {
 			let balance = <pallet_refungible::Balance<Test>>::get((
 				CollectionId(1),
 				TokenId((index + 1) as u32),