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feat(erc721): implement erc-721 token standard (#23)
Resolves #28 Co-authored-by: Alexander González <[email protected]> Co-authored-by: Eric Nordelo <[email protected]>
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Original file line number | Diff line number | Diff line change |
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use alloy_primitives::U256; | ||
use stylus_sdk::storage::{StorageGuardMut, StorageUint}; | ||
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pub(crate) trait AddAssignUnchecked<T> { | ||
fn add_assign_unchecked(&mut self, rhs: T); | ||
} | ||
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impl<'a> AddAssignUnchecked<U256> for StorageGuardMut<'a, StorageUint<256, 4>> { | ||
fn add_assign_unchecked(&mut self, rhs: U256) { | ||
let new_balance = self.get() + rhs; | ||
self.set(new_balance); | ||
} | ||
} | ||
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pub(crate) trait SubAssignUnchecked<T> { | ||
fn sub_assign_unchecked(&mut self, rhs: T); | ||
} | ||
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impl<'a> SubAssignUnchecked<U256> for StorageGuardMut<'a, StorageUint<256, 4>> { | ||
fn sub_assign_unchecked(&mut self, rhs: U256) { | ||
let new_balance = self.get() - rhs; | ||
self.set(new_balance); | ||
} | ||
} |
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