typia/src/factories/internal/metadata/iterate_metadata_escape.ts

Superfast runtime validators with only one line

import ts from "typescript";

import { Metadata } from "../../../schemas/metadata/Metadata";
import { MetadataEscaped } from "../../../schemas/metadata/MetadataEscaped";

import { Writable } from "../../../typings/Writable";

import { MetadataCollection } from "../../MetadataCollection";
import { MetadataFactory } from "../../MetadataFactory";
import { TypeFactory } from "../../TypeFactory";
import { iterate_metadata } from "./iterate_metadata";

export const iterate_metadata_escape =
  (checker: ts.TypeChecker) =>
  (options: MetadataFactory.IOptions) =>
  (collection: MetadataCollection) =>
  (errors: MetadataFactory.IError[]) =>
  (
    meta: Metadata,
    type: ts.Type,
    explore: MetadataFactory.IExplore,
  ): boolean => {
    if (options.escape === false || explore.escaped === true) return false;

    const escaped: ts.Type | null =
      TypeFactory.getReturnType(checker)(type)("toJSON");
    if (escaped === null) return false;

    if (meta.escaped === null) {
      Writable(meta).escaped = MetadataEscaped.create({
        original: Metadata.initialize(),
        returns: Metadata.initialize(),
      });
    }
    iterate_metadata(checker)(options)(collection)(errors)(
      meta.escaped!.original,
      type,
      {
        ...explore,
        escaped: true,
      },
    );
    iterate_metadata(checker)(options)(collection)(errors)(
      meta.escaped!.returns,
      escaped,
      {
        ...explore,
        escaped: true,
      },
    );
    return true;
  };