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Viewing / Editing File: code.ts

import type { Document } from './bson';
import { BSONValue } from './bson_value';
import { type InspectFn, defaultInspect } from './parser/utils';

/** @public */
export interface CodeExtended {
  $code: string;
  $scope?: Document;
}

/**
 * A class representation of the BSON Code type.
 * @public
 * @category BSONType
 */
export class Code extends BSONValue {
  get _bsontype(): 'Code' {
    return 'Code';
  }

code: string;

// a code instance having a null scope is what determines whether
  // it is BSONType 0x0D (just code) / 0x0F (code with scope)
  scope: Document | null;

/**
   * @param code - a string or function.
   * @param scope - an optional scope for the function.
   */
  constructor(code: string | Function, scope?: Document | null) {
    super();
    this.code = code.toString();
    this.scope = scope ?? null;
  }

toJSON(): { code: string; scope?: Document } {
    if (this.scope != null) {
      return { code: this.code, scope: this.scope };
    }

return { code: this.code };
  }

/** @internal */
  toExtendedJSON(): CodeExtended {
    if (this.scope) {
      return { $code: this.code, $scope: this.scope };
    }

return { $code: this.code };
  }

/** @internal */
  static fromExtendedJSON(doc: CodeExtended): Code {
    return new Code(doc.$code, doc.$scope);
  }

inspect(depth?: number, options?: unknown, inspect?: InspectFn): string {
    inspect ??= defaultInspect;
    let parametersString = inspect(this.code, options);
    const multiLineFn = parametersString.includes('\n');
    if (this.scope != null) {
      parametersString += `,${multiLineFn ? '\n' : ' '}${inspect(this.scope, options)}`;
    }
    const endingNewline = multiLineFn && this.scope === null;
    return `new Code(${multiLineFn ? '\n' : ''}${parametersString}${endingNewline ? '\n' : ''})`;
  }
}

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