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Migrate Contracts to Solidity v0.6 (#2080)

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* Initial migration to Solidity 0.6.x - v3.0 first steps (#2063)

* Initial migration, missing GSN, 721, 777 and Crowdsales.

* Add _beforeTokenOperation and _afterTokenOperation.

* Add documentation for hooks.

* Add hooks doc

* Add missing drafts

* Add back ERC721 with hooks

* Bring back ERC777

* Notes on hooks

* Bring back GSN

* Make functions virtual

* Make GSN overrides explicit

* Fix ERC20Pausable tests

* Remove virtual from some view functions

* Update linter

* Delete examples

* Remove unnecessary virtual

* Remove roles from Pausable

* Remove roles

* Remove users of roles

* Adapt ERC20 tests

* Fix ERC721 tests

* Add all ERC721 hooks

* Add ERC777 hooks

* Fix remaining tests

* Bump compiler version

* Move 721BurnableMock into mocks directory

* Remove _before hooks

* Fix tests

* Upgrade linter

* Put modifiers last

* Remove _beforeTokenApproval and _beforeOperatorApproval hooks
This commit is contained in:
Nicolás Venturo
2020-02-14 11:12:32 -03:00
committed by GitHub
parent 04a1b21874
commit 5dfe7215a9
201 changed files with 1561 additions and 5006 deletions
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2
contracts/math/Math.sol
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@ -1,4 +1,4 @@
pragma solidity ^0.5.0;
pragma solidity ^0.6.0;
/**
* @dev Standard math utilities missing in the Solidity language.