{
    "$schema": "./storage-layout.schema.json",

    "$comment": "Storage layout for a standard ERC-20 token, taken from solc --storage-layout output and annotated with ERC-7730 display hints. Every entry is compiler-derived sequential storage, so 'source' and 'baseSlotDerivation' are omitted throughout.",

    "compiler": {
        "language": "Solidity",
        "version": "0.8.24"
    },

    "storage": [
        {
            "label": "_totalSupply",
            "offset": 0,
            "slot": "0",
            "type": "t_uint256",
            "display": {
                "label": "Total Supply",
                "description": "The total number of tokens in circulation.",
                "format": "tokenAmount",
                "params": { "tokenPath": "@.to" }
            }
        },
        {
            "label": "_balances",
            "offset": 0,
            "slot": "1",
            "type": "t_mapping(t_address,t_uint256)",
            "display": {
                "label": "Balance of {key[0]}",
                "description": "Token balance held by each account.",
                "keyFormats": [
                    { "format": "addressName" }
                ],
                "format": "tokenAmount",
                "params": { "tokenPath": "@.to" },
                "template": [
                    {
                        "condition": { ">": [{ "var": "newValue" }, { "var": "oldValue" }] },
                        "value": "Balance of {key[0]} increased from {oldValue} to {newValue}"
                    },
                    {
                        "condition": { "<": [{ "var": "newValue" }, { "var": "oldValue" }] },
                        "value": "Balance of {key[0]} decreased from {oldValue} to {newValue}"
                    },
                    {
                        "value": "Balance of {key[0]} changed from {oldValue} to {newValue}"
                    }
                ]
            }
        },
        {
            "label": "_allowances",
            "offset": 0,
            "slot": "2",
            "type": "t_mapping(t_address,t_mapping(t_address,t_uint256))",
            "display": {
                "label": "Allowance of {key[1]} granted by {key[0]}",
                "description": "Spending allowances: the amount account key[1] is permitted to transfer on behalf of account key[0].",
                "keyFormats": [
                    { "format": "addressName" },
                    { "format": "addressName" }
                ],
                "format": "tokenAmount",
                "params": { "tokenPath": "@.to" },
                "template": "Allowance of {key[1]} granted by {key[0]} changed from {oldValue} to {newValue}"
            }
        },
        {
            "label": "_name",
            "offset": 0,
            "slot": "3",
            "type": "t_string_storage",
            "display": {
                "label": "Token name",
                "format": "raw"
            }
        },
        {
            "label": "_symbol",
            "offset": 0,
            "slot": "4",
            "type": "t_string_storage",
            "display": {
                "label": "Token symbol",
                "format": "raw"
            }
        }
    ],

    "types": {
        "t_uint256": {
            "encoding": "inplace",
            "label": "uint256",
            "numberOfBytes": "32"
        },
        "t_address": {
            "encoding": "inplace",
            "label": "address",
            "numberOfBytes": "20"
        },
        "t_string_storage": {
            "encoding": "bytes",
            "label": "string",
            "numberOfBytes": "32"
        },
        "t_mapping(t_address,t_uint256)": {
            "encoding": "mapping",
            "key": "t_address",
            "label": "mapping(address => uint256)",
            "numberOfBytes": "32",
            "value": "t_uint256"
        },
        "t_mapping(t_address,t_mapping(t_address,t_uint256))": {
            "encoding": "mapping",
            "key": "t_address",
            "label": "mapping(address => mapping(address => uint256))",
            "numberOfBytes": "32",
            "value": "t_mapping(t_address,t_uint256)"
        }
    }
}