git.delta.rocks / unique-network / refs/commits / bfbca7684ca5

--- /dev/null
+++ b/pallets/fungible/Cargo.toml
@@ -0,0 +1,36 @@
+[package]
+name = "pallet-fungible"
+version = "0.1.0"
+edition = "2018"
+
+[dependencies.codec]
+default-features = false
+features = ['derive']
+package = 'parity-scale-codec'
+version = '2.0.0'
+
+[dependencies]
+frame-support = { default-features = false, version = '4.0.0-dev', git = 'https://github.com/paritytech/substrate.git', branch = 'polkadot-v0.9.10' }
+frame-system = { default-features = false, version = '4.0.0-dev', git = 'https://github.com/paritytech/substrate.git', branch = 'polkadot-v0.9.10' }
+sp-runtime = { default-features = false, version = '4.0.0-dev', git = 'https://github.com/paritytech/substrate.git', branch = 'polkadot-v0.9.10' }
+sp-std = { default-features = false, version = '4.0.0-dev', git = 'https://github.com/paritytech/substrate.git', branch = 'polkadot-v0.9.10' }
+sp-core = { default-features = false, version = '4.0.0-dev', git = 'https://github.com/paritytech/substrate.git', branch = 'polkadot-v0.9.10' }
+pallet-common = { default-features = false, path = '../common' }
+nft-data-structs = { default-features = false, path = '../../primitives/nft' }
+evm-coder = { default-features = false, path = '../../crates/evm-coder' }
+ethereum = { default-features = false, version = "0.9.0" }
+pallet-evm-coder-substrate = { default-features = false, path = '../evm-coder-substrate' }
+
+[features]
+default = ["std"]
+std = [
+    "frame-support/std",
+    "frame-system/std",
+    "sp-runtime/std",
+    "sp-std/std",
+    "nft-data-structs/std",
+    "pallet-common/std",
+    "evm-coder/std",
+    "ethereum/std",
+]
+runtime-benchmarks = []

--- /dev/null
+++ b/pallets/fungible/src/benchmarking.rs
@@ -0,0 +1 @@
+#![cfg(feature = "runtime-benchmarking")]

--- /dev/null
+++ b/pallets/fungible/src/common.rs
@@ -0,0 +1,220 @@
+use core::marker::PhantomData;
+
+use frame_support::{dispatch::DispatchResultWithPostInfo, ensure, fail, weights::Weight};
+use nft_data_structs::TokenId;
+use pallet_common::{
+	CommonCollectionOperations, CommonWeightInfo, account::CrossAccountId, with_weight,
+};
+use sp_runtime::ArithmeticError;
+use sp_std::{vec::Vec, vec};
+
+use crate::{
+	Allowance, Balance, Config, Error, FungibleHandle, Pallet, SelfWeightOf, weights::WeightInfo,
+};
+
+pub struct CommonWeights<T: Config>(PhantomData<T>);
+impl<T: Config> CommonWeightInfo for CommonWeights<T> {
+	fn create_item() -> Weight {
+		<SelfWeightOf<T>>::create_item()
+	}
+
+	fn create_multiple_items(_amount: u32) -> Weight {
+		Self::create_item()
+	}
+
+	fn burn_item() -> Weight {
+		<SelfWeightOf<T>>::burn_item()
+	}
+
+	fn transfer() -> Weight {
+		<SelfWeightOf<T>>::transfer()
+	}
+
+	fn approve() -> Weight {
+		<SelfWeightOf<T>>::approve()
+	}
+
+	fn transfer_from() -> Weight {
+		<SelfWeightOf<T>>::transfer_from()
+	}
+
+	fn set_variable_metadata(_bytes: u32) -> Weight {
+		// Error
+		0
+	}
+}
+
+impl<T: Config> CommonCollectionOperations<T> for FungibleHandle<T> {
+	fn create_item(
+		&self,
+		sender: T::CrossAccountId,
+		to: T::CrossAccountId,
+		data: nft_data_structs::CreateItemData,
+	) -> DispatchResultWithPostInfo {
+		match data {
+			nft_data_structs::CreateItemData::Fungible(data) => with_weight(
+				<Pallet<T>>::create_item(self, &sender, (to, data.value)),
+				<SelfWeightOf<T>>::create_item(),
+			),
+			_ => fail!(<Error<T>>::NotFungibleDataUsedToMintFungibleCollectionToken),
+		}
+	}
+
+	fn create_multiple_items(
+		&self,
+		sender: T::CrossAccountId,
+		to: T::CrossAccountId,
+		data: Vec<nft_data_structs::CreateItemData>,
+	) -> DispatchResultWithPostInfo {
+		let mut sum: u128 = 0;
+		for data in data {
+			match data {
+				nft_data_structs::CreateItemData::Fungible(data) => {
+					sum = sum
+						.checked_add(data.value)
+						.ok_or(ArithmeticError::Overflow)?;
+				}
+				_ => fail!(<Error<T>>::NotFungibleDataUsedToMintFungibleCollectionToken),
+			}
+		}
+
+		with_weight(
+			<Pallet<T>>::create_item(self, &sender, (to, sum)),
+			<SelfWeightOf<T>>::create_item(),
+		)
+	}
+
+	fn burn_item(
+		&self,
+		sender: T::CrossAccountId,
+		token: TokenId,
+		amount: u128,
+	) -> DispatchResultWithPostInfo {
+		ensure!(
+			token == TokenId::default(),
+			<Error<T>>::FungibleItemsHaveNoId
+		);
+
+		with_weight(
+			<Pallet<T>>::burn(self, &sender, amount),
+			<SelfWeightOf<T>>::burn_item(),
+		)
+	}
+
+	fn transfer(
+		&self,
+		from: T::CrossAccountId,
+		to: T::CrossAccountId,
+		token: TokenId,
+		amount: u128,
+	) -> DispatchResultWithPostInfo {
+		ensure!(
+			token == TokenId::default(),
+			<Error<T>>::FungibleItemsHaveNoId
+		);
+
+		with_weight(
+			<Pallet<T>>::transfer(&self, &from, &to, amount),
+			<SelfWeightOf<T>>::transfer(),
+		)
+	}
+
+	fn approve(
+		&self,
+		sender: T::CrossAccountId,
+		spender: T::CrossAccountId,
+		token: TokenId,
+		amount: u128,
+	) -> DispatchResultWithPostInfo {
+		ensure!(
+			token == TokenId::default(),
+			<Error<T>>::FungibleItemsHaveNoId
+		);
+
+		with_weight(
+			<Pallet<T>>::set_allowance(&self, &sender, &spender, amount),
+			<SelfWeightOf<T>>::approve(),
+		)
+	}
+
+	fn transfer_from(
+		&self,
+		sender: T::CrossAccountId,
+		from: T::CrossAccountId,
+		to: T::CrossAccountId,
+		token: TokenId,
+		amount: u128,
+	) -> DispatchResultWithPostInfo {
+		ensure!(
+			token == TokenId::default(),
+			<Error<T>>::FungibleItemsHaveNoId
+		);
+
+		with_weight(
+			<Pallet<T>>::transfer_from(&self, &sender, &from, &to, amount),
+			<SelfWeightOf<T>>::transfer_from(),
+		)
+	}
+
+	fn set_variable_metadata(
+		&self,
+		_sender: T::CrossAccountId,
+		_token: TokenId,
+		_data: Vec<u8>,
+	) -> DispatchResultWithPostInfo {
+		fail!(<Error<T>>::FungibleItemsHaveData)
+	}
+
+	fn account_tokens(&self, account: T::CrossAccountId) -> Vec<TokenId> {
+		if <Balance<T>>::get((self.id, account.as_sub())) != 0 {
+			vec![TokenId::default()]
+		} else {
+			vec![]
+		}
+	}
+
+	fn token_exists(&self, token: TokenId) -> bool {
+		token == TokenId::default()
+	}
+
+	fn token_owner(&self, _token: TokenId) -> T::CrossAccountId {
+		T::CrossAccountId::default()
+	}
+	fn const_metadata(&self, _token: TokenId) -> Vec<u8> {
+		Vec::new()
+	}
+	fn variable_metadata(&self, _token: TokenId) -> Vec<u8> {
+		Vec::new()
+	}
+
+	fn collection_tokens(&self) -> u32 {
+		1
+	}
+
+	fn account_balance(&self, account: T::CrossAccountId) -> u32 {
+		if <Balance<T>>::get((self.id, account.as_sub())) != 0 {
+			1
+		} else {
+			0
+		}
+	}
+
+	fn balance(&self, account: T::CrossAccountId, token: TokenId) -> u128 {
+		if token != TokenId::default() {
+			return 0;
+		}
+		<Balance<T>>::get((self.id, account.as_sub()))
+	}
+
+	fn allowance(
+		&self,
+		sender: T::CrossAccountId,
+		spender: T::CrossAccountId,
+		token: TokenId,
+	) -> u128 {
+		if token != TokenId::default() {
+			return 0;
+		}
+		<Allowance<T>>::get((self.id, sender.as_sub(), spender.as_sub()))
+	}
+}

--- /dev/null
+++ b/pallets/fungible/src/erc.rs
@@ -0,0 +1,112 @@
+use core::char::{REPLACEMENT_CHARACTER, decode_utf16};
+use core::convert::TryInto;
+use evm_coder::{ToLog, execution::*, generate_stubgen, solidity_interface, types::*};
+use nft_data_structs::CollectionMode;
+use pallet_common::erc::CommonEvmHandler;
+use sp_core::{H160, U256};
+use sp_std::vec::Vec;
+use pallet_common::account::CrossAccountId;
+use pallet_common::erc::PrecompileOutput;
+use pallet_evm_coder_substrate::{call_internal, dispatch_to_evm};
+
+use crate::{Allowance, Balance, Config, FungibleHandle, Pallet, TotalSupply};
+
+#[derive(ToLog)]
+pub enum ERC20Events {
+	Transfer {
+		#[indexed]
+		from: address,
+		#[indexed]
+		to: address,
+		value: uint256,
+	},
+	Approval {
+		#[indexed]
+		owner: address,
+		#[indexed]
+		spender: address,
+		value: uint256,
+	},
+}
+
+#[solidity_interface(name = "ERC20", events(ERC20Events))]
+impl<T: Config> FungibleHandle<T> {
+	fn name(&self) -> Result<string> {
+		Ok(decode_utf16(self.name.iter().copied())
+			.map(|r| r.unwrap_or(REPLACEMENT_CHARACTER))
+			.collect::<string>())
+	}
+	fn symbol(&self) -> Result<string> {
+		Ok(string::from_utf8_lossy(&self.token_prefix).into())
+	}
+	fn total_supply(&self) -> Result<uint256> {
+		Ok(<TotalSupply<T>>::get(self.id).into())
+	}
+
+	fn decimals(&self) -> Result<uint8> {
+		Ok(if let CollectionMode::Fungible(decimals) = &self.mode {
+			*decimals
+		} else {
+			unreachable!()
+		})
+	}
+	fn balance_of(&self, owner: address) -> Result<uint256> {
+		let owner = T::CrossAccountId::from_eth(owner);
+		let balance = <Balance<T>>::get((self.id, owner.as_sub()));
+		Ok(balance.into())
+	}
+	fn transfer(&mut self, caller: caller, to: address, amount: uint256) -> Result<bool> {
+		let caller = T::CrossAccountId::from_eth(caller);
+		let to = T::CrossAccountId::from_eth(to);
+		let amount = amount.try_into().map_err(|_| "amount overflow")?;
+
+		<Pallet<T>>::transfer(self, &caller, &to, amount).map_err(|_| "transfer error")?;
+		Ok(true)
+	}
+	fn transfer_from(
+		&mut self,
+		caller: caller,
+		from: address,
+		to: address,
+		amount: uint256,
+	) -> Result<bool> {
+		let caller = T::CrossAccountId::from_eth(caller);
+		let from = T::CrossAccountId::from_eth(from);
+		let to = T::CrossAccountId::from_eth(to);
+		let amount = amount.try_into().map_err(|_| "amount overflow")?;
+
+		<Pallet<T>>::transfer_from(self, &caller, &from, &to, amount)
+			.map_err(dispatch_to_evm::<T>)?;
+		Ok(true)
+	}
+	fn approve(&mut self, caller: caller, spender: address, amount: uint256) -> Result<bool> {
+		let caller = T::CrossAccountId::from_eth(caller);
+		let spender = T::CrossAccountId::from_eth(spender);
+		let amount = amount.try_into().map_err(|_| "amount overflow")?;
+
+		<Pallet<T>>::set_allowance(self, &caller, &spender, amount)
+			.map_err(dispatch_to_evm::<T>)?;
+		Ok(true)
+	}
+	fn allowance(&self, owner: address, spender: address) -> Result<uint256> {
+		let owner = T::CrossAccountId::from_eth(owner);
+		let spender = T::CrossAccountId::from_eth(spender);
+
+		Ok(<Allowance<T>>::get((self.id, owner.as_sub(), spender.as_sub())).into())
+	}
+}
+
+#[solidity_interface(name = "UniqueFungible", is(ERC20))]
+impl<T: Config> FungibleHandle<T> {}
+
+generate_stubgen!(get_impl, UniqueFungibleCall, true);
+generate_stubgen!(gen_iface, UniqueFungibleCall, false);
+
+impl<T: Config> CommonEvmHandler for FungibleHandle<T> {
+	const CODE: &'static [u8] = include_bytes!("./stubs/UniqueFungible.raw");
+
+	fn call(mut self, source: &H160, input: &[u8], value: U256) -> Option<PrecompileOutput> {
+		let result = call_internal::<UniqueFungibleCall, _>(*source, &mut self, value, input);
+		self.0.recorder.evm_to_precompile_output(result)
+	}
+}

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--- /dev/null
+++ b/pallets/fungible/src/stubs/UniqueFungible.sol
@@ -0,0 +1,121 @@
+// SPDX-License-Identifier: OTHER
+// This code is automatically generated
+
+pragma solidity >=0.8.0 <0.9.0;
+
+// Common stubs holder
+contract Dummy {
+	uint8 dummy;
+	string stub_error = "this contract is implemented in native";
+}
+
+// Inline
+contract ERC20Events {
+	event Transfer(address indexed from, address indexed to, uint256 value);
+	event Approval(
+		address indexed owner,
+		address indexed spender,
+		uint256 value
+	);
+}
+
+// Inline
+contract InlineNameSymbol is Dummy {
+	// Selector: name() 06fdde03
+	function name() public view returns (string memory) {
+		require(false, stub_error);
+		dummy;
+		return "";
+	}
+
+	// Selector: symbol() 95d89b41
+	function symbol() public view returns (string memory) {
+		require(false, stub_error);
+		dummy;
+		return "";
+	}
+}
+
+// Inline
+contract InlineTotalSupply is Dummy {
+	// Selector: totalSupply() 18160ddd
+	function totalSupply() public view returns (uint256) {
+		require(false, stub_error);
+		dummy;
+		return 0;
+	}
+}
+
+contract ERC165 is Dummy {
+	// Selector: supportsInterface(bytes4) 01ffc9a7
+	function supportsInterface(uint32 interfaceId) public view returns (bool) {
+		require(false, stub_error);
+		interfaceId;
+		dummy;
+		return false;
+	}
+}
+
+contract ERC20 is Dummy, InlineNameSymbol, InlineTotalSupply, ERC20Events {
+	// Selector: decimals() 313ce567
+	function decimals() public view returns (uint8) {
+		require(false, stub_error);
+		dummy;
+		return 0;
+	}
+
+	// Selector: balanceOf(address) 70a08231
+	function balanceOf(address owner) public view returns (uint256) {
+		require(false, stub_error);
+		owner;
+		dummy;
+		return 0;
+	}
+
+	// Selector: transfer(address,uint256) a9059cbb
+	function transfer(address to, uint256 amount) public returns (bool) {
+		require(false, stub_error);
+		to;
+		amount;
+		dummy = 0;
+		return false;
+	}
+
+	// Selector: transferFrom(address,address,uint256) 23b872dd
+	function transferFrom(
+		address from,
+		address to,
+		uint256 amount
+	) public returns (bool) {
+		require(false, stub_error);
+		from;
+		to;
+		amount;
+		dummy = 0;
+		return false;
+	}
+
+	// Selector: approve(address,uint256) 095ea7b3
+	function approve(address spender, uint256 amount) public returns (bool) {
+		require(false, stub_error);
+		spender;
+		amount;
+		dummy = 0;
+		return false;
+	}
+
+	// Selector: allowance(address,address) dd62ed3e
+	function allowance(address owner, address spender)
+		public
+		view
+		returns (uint256)
+	{
+		require(false, stub_error);
+		owner;
+		spender;
+		dummy;
+		return 0;
+	}
+}
+
+contract UniqueFungible is Dummy, ERC165, ERC20 {}

--- /dev/null
+++ b/pallets/fungible/src/weights.rs
@@ -0,0 +1,31 @@
+#![cfg_attr(rustfmt, rustfmt_skip)]
+#![allow(unused_parens)]
+#![allow(unused_imports)]
+
+use frame_support::{traits::Get, weights::{Weight, constants::RocksDbWeight}};
+use sp_std::marker::PhantomData;
+
+pub trait WeightInfo {
+	fn create_item() -> Weight;
+	fn burn_item() -> Weight;
+	fn transfer() -> Weight;
+	fn approve() -> Weight;
+	fn transfer_from() -> Weight;
+}
+
+pub struct SubstrateWeight<T>(PhantomData<T>);
+impl<T: frame_system::Config> WeightInfo for SubstrateWeight<T> {
+    fn create_item() -> Weight {0}
+	fn burn_item() -> Weight {0}
+	fn transfer() -> Weight {0}
+	fn approve() -> Weight {0}
+	fn transfer_from() -> Weight {0}
+}
+
+impl WeightInfo for () {
+    fn create_item() -> Weight {0}
+	fn burn_item() -> Weight {0}
+	fn transfer() -> Weight {0}
+	fn approve() -> Weight {0}
+	fn transfer_from() -> Weight {0}
+}