IdeaTokenNameVerifier

Each market has its own IdeaTokenNameVerifier which is a small contract performing basic checks on a token name. These name verifiers are used by the IdeaTokenFactory when a new token is listed. For example on the Twitter market the TwitterHandleNameVerifier is used to verify the token name is a valid Twitter handle (@ followed by 1-15 letters or numbers including "_". All lower-case) :
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contract TwitterHandleNameVerifier is IIdeaTokenNameVerifier {
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    /**
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     * Verifies whether a string matches the required format
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     *
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     * @param name The input string (Twitter handle)
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     *
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     * @return Bool; True=matches, False=does not match
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     */
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    function verifyTokenName(string calldata name) external pure override returns (bool) {
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        bytes memory b = bytes(name);
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        if(b.length < 2 || b.length > 16) {
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            return false;
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        }
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​
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        if(b[0] != 0x40) { // @
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            return false;
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        }
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​
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        for(uint i = 1; i < b.length; i++) {
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            bytes1 char = b[i];
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            if (!(char >= 0x30 && char <= 0x39) && //9-0
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                !(char >= 0x61 && char <= 0x7A) && //a-z
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                !(char == 0x5F)) { //_
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                return false;
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            }
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        }
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​
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        return true;
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    }
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}
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If the token name verification is unsuccessful the IdeaTokenFactory will revert on addToken.

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Last modified 11mo ago

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