From 3c61157abb72229d4ae345a401f472bd7f5c0fb2 Mon Sep 17 00:00:00 2001
From: Jeongho Nam <samchon.github@gmail.com>
Date: Tue, 27 Feb 2024 19:54:07 +0900
Subject: [PATCH] Enhance `RandomGenerator.pattern()`.

Default random seeder of `typia.random<T>()` function is  `RandomGenerator`, and its `RandomGenerator.pattern()` function is utilizing the `randexp` library.

By the way, `randexp` rarely failed to generate proper patten string value, so that it can't pass the validate function of the `typia.is<T>()` function with same type.

This PR avoids such rare mis-pattern string generation case, by repeating the random pattern string generation about 10 times, until succeded to pass the pattern string validation.
---
 benchmark/package.json                       | 2 +-
 errors/package.json                          | 2 +-
 package.json                                 | 2 +-
 packages/typescript-json/package.json        | 4 ++--
 src/utils/RandomGenerator/RandomGenerator.ts | 9 ++++++++-
 test/package.json                            | 2 +-
 website/package.json                         | 2 +-
 7 files changed, 15 insertions(+), 8 deletions(-)

diff --git a/benchmark/package.json b/benchmark/package.json
index 7b296574b2..39685fecf8 100644
--- a/benchmark/package.json
+++ b/benchmark/package.json
@@ -73,6 +73,6 @@
     "suppress-warnings": "^1.0.2",
     "tstl": "^2.5.13",
     "uuid": "^9.0.1",
-    "typia": "D:\\github\\samchon\\typia\\typia-5.4.12.tgz"
+    "typia": "D:\\github\\samchon\\typia\\typia-5.4.13.tgz"
   }
 }
\ No newline at end of file
diff --git a/errors/package.json b/errors/package.json
index c96766fbbd..740333898a 100644
--- a/errors/package.json
+++ b/errors/package.json
@@ -32,6 +32,6 @@
     "typescript": "^5.3.2"
   },
   "dependencies": {
-    "typia": "D:\\github\\samchon\\typia\\typia-5.4.12.tgz"
+    "typia": "D:\\github\\samchon\\typia\\typia-5.4.13.tgz"
   }
 }
\ No newline at end of file
diff --git a/package.json b/package.json
index a212b86de4..fa79017200 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "typia",
-  "version": "5.4.12",
+  "version": "5.4.13",
   "description": "Superfast runtime validators with only one line",
   "main": "lib/index.js",
   "typings": "lib/index.d.ts",
diff --git a/packages/typescript-json/package.json b/packages/typescript-json/package.json
index abf5a0ffb6..592840531e 100644
--- a/packages/typescript-json/package.json
+++ b/packages/typescript-json/package.json
@@ -1,6 +1,6 @@
 {
   "name": "typescript-json",
-  "version": "5.4.12",
+  "version": "5.4.13",
   "description": "Superfast runtime validators with only one line",
   "main": "lib/index.js",
   "typings": "lib/index.d.ts",
@@ -61,7 +61,7 @@
   },
   "homepage": "https://typia.io",
   "dependencies": {
-    "typia": "5.4.12"
+    "typia": "5.4.13"
   },
   "peerDependencies": {
     "typescript": ">=4.8.0 <5.5.0"
diff --git a/src/utils/RandomGenerator/RandomGenerator.ts b/src/utils/RandomGenerator/RandomGenerator.ts
index cd6e1d3672..8cf10a4743 100644
--- a/src/utils/RandomGenerator/RandomGenerator.ts
+++ b/src/utils/RandomGenerator/RandomGenerator.ts
@@ -28,7 +28,14 @@ export const array = <T>(closure: (index: number) => T, count?: number): T[] =>
   new Array(count ?? length()).fill(0).map((_e, index) => closure(index));
 export const pick = <T>(array: T[]): T => array[integer(0, array.length - 1)]!;
 export const length = () => integer(0, 3);
-export const pattern = (regex: RegExp): string => new RandExp(regex).gen();
+export const pattern = (regex: RegExp): string => {
+  const r: RandExp = new RandExp(regex);
+  for (let i: number = 0; i < 10; ++i) {
+    const str: string = r.gen();
+    if (regex.test(str)) return str;
+  }
+  return r.gen();
+};
 
 /* -----------------------------------------------------------
   SECIAL FORMATS
diff --git a/test/package.json b/test/package.json
index 687480f258..22342f374e 100644
--- a/test/package.json
+++ b/test/package.json
@@ -51,6 +51,6 @@
     "suppress-warnings": "^1.0.2",
     "tstl": "^2.5.13",
     "uuid": "^9.0.1",
-    "typia": "D:\\github\\samchon\\typia\\typia-5.4.12.tgz"
+    "typia": "D:\\github\\samchon\\typia\\typia-5.4.13.tgz"
   }
 }
\ No newline at end of file
diff --git a/website/package.json b/website/package.json
index dceabbc02c..4e3dbdc915 100644
--- a/website/package.json
+++ b/website/package.json
@@ -43,6 +43,6 @@
     "next-sitemap": "^4.0.7",
     "rimraf": "^5.0.0",
     "ts-node": "^10.9.1",
-    "typia": "5.4.12"
+    "typia": "5.4.13"
   }
 }