@slippy-lint/slippy/dist/rules/no-tx-origin.js

A simple but powerful linter for Solidity

import { NonterminalKind, TerminalKind } from "@nomicfoundation/slang/cst";
export const NoTxOrigin = {
    name: "no-tx-origin",
    recommended: true,
    create: function () {
        return new NoTxOriginRule(this.name);
    },
};
class NoTxOriginRule {
    constructor(name) {
        this.name = name;
    }
    run({ file }) {
        const diagnostics = [];
        const cursor = file.createTreeCursor();
        while (cursor.goToNextNonterminalWithKind(NonterminalKind.MemberAccessExpression)) {
            const memberAccess = cursor.spawn();
            if (!memberAccess.goToFirstChild())
                continue;
            if (!memberAccess.node.isNonterminalNode())
                continue;
            if (memberAccess.node.kind !== NonterminalKind.Expression)
                continue;
            if (memberAccess.goToNextTerminalWithKind(TerminalKind.Identifier)) {
                if (memberAccess.node.unparse() !== "tx")
                    continue;
            }
            const txTextRange = memberAccess.textRange;
            if (memberAccess.goToNextTerminalWithKind(TerminalKind.Identifier)) {
                if (memberAccess.node.unparse() !== "origin")
                    continue;
            }
            diagnostics.push({
                sourceId: file.id,
                rule: this.name,
                message: "Avoid using tx.origin",
                line: txTextRange.start.line,
                column: txTextRange.start.column,
            });
        }
        return diagnostics;
    }
}
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