prettier-plugin-solidity/dist/slang-utils/sort-function-attributes.js

A Prettier Plugin for automatically formatting your Solidity code.

import { NonterminalKind } from '@nomicfoundation/slang/cst';
import { TerminalNode } from '../slang-nodes/TerminalNode.js';
const visibilityKeyWords = new Set([
    'external',
    'internal',
    'public',
    'private'
]);
const mutabilityKeyWords = new Set(['pure', 'constant', 'payable', 'view']);
export function sortFunctionAttributes(aVariant, bVariant) {
    const aIsString = aVariant instanceof TerminalNode;
    const bIsString = bVariant instanceof TerminalNode;
    if (aIsString && !bIsString)
        return -1;
    if (bIsString && !aIsString)
        return 1;
    // Both are strings
    if (aIsString && bIsString) {
        // Visibility First
        if (visibilityKeyWords.has(aVariant.value))
            return -1;
        if (visibilityKeyWords.has(bVariant.value))
            return 1;
        // State Mutability Second
        if (mutabilityKeyWords.has(aVariant.value))
            return -1;
        if (mutabilityKeyWords.has(bVariant.value))
            return 1;
        // Virtual keyword last
    }
    // Both are nodes
    if (!aIsString && !bIsString) {
        // OverrideSpecifiers before ModifierInvocation
        if (aVariant.kind === NonterminalKind.OverrideSpecifier &&
            bVariant.kind === NonterminalKind.ModifierInvocation)
            return -1;
        if (bVariant.kind === NonterminalKind.OverrideSpecifier &&
            aVariant.kind === NonterminalKind.ModifierInvocation)
            return 1;
    }
    return 0;
}
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