import { NonterminalKind } from '@nomicfoundation/slang/cst';
import { doc } from 'prettier';
import { printSeparatedItem } from '../slang-printers/print-separated-item.js';
import { printPreservingEmptyLines } from '../slang-printers/print-preserving-empty-lines.js';
import { extractVariant } from '../slang-utils/extract-variant.js';
import { SlangNode } from './SlangNode.js';
import { YulStatement } from './YulStatement.js';

import type * as ast from '@nomicfoundation/slang/ast';
import type { AstPath, Doc, ParserOptions } from 'prettier';
import type { CollectedMetadata, PrintFunction } from '../types.d.ts';
import type { AstNode } from './types.d.ts';

const { hardline } = doc.builders;

export class YulStatements extends SlangNode {
  readonly kind = NonterminalKind.YulStatements;

  items: YulStatement['variant'][];

  constructor(
    ast: ast.YulStatements,
    collected: CollectedMetadata,
    options: ParserOptions<AstNode>
  ) {
    super(ast, collected, true);

    this.items = ast.items.map((item) =>
      extractVariant(new YulStatement(item, collected, options))
    );
  }

  print(
    path: AstPath<YulStatements>,
    print: PrintFunction,
    options: ParserOptions<AstNode>
  ): Doc {
    return this.items.length > 0 || (this.comments?.length || 0) > 0
      ? printSeparatedItem(
          printPreservingEmptyLines(this, path, print, options),
          { firstSeparator: hardline }
        )
      : '';
  }
}