0bed0c0271
🚀 主要機能: • Everything is Box哲学による革新的アーキテクチャ • WebAssemblyブラウザー対応プレイグラウンド • アーティスト協同制作デモ - 複数Boxインスタンス実証 • 視覚的デバッグシステム - DebugBox完全統合 • static box Mainパターン - メモリ安全設計 ⚡ 言語機能: • NOT/AND/OR/除算演算子完全実装 • ジェネリクス/テンプレートシステム • 非同期処理(nowait/await) • try/catchエラーハンドリング • Canvas統合グラフィックス 🎨 ブラウザー体験: • 9種類のインタラクティブデモ • リアルタイムコード実行 • WebCanvas/WebConsole/WebDisplay • モバイル対応完了 🤖 Built with Claude Code collaboration Ready for public release!
225 lines
7.8 KiB
Rust
225 lines
7.8 KiB
Rust
/*!
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* Nyash Random Box - Random number generation
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*
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* 乱数生成を提供するBox型
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* Everything is Box哲学に基づく乱数ライブラリ
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*/
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use crate::box_trait::{NyashBox, StringBox, IntegerBox, BoolBox, ArrayBox};
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use crate::boxes::math_box::FloatBox;
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use std::fmt::{Debug, Display};
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use std::any::Any;
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use std::sync::{Arc, Mutex};
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/// 乱数生成を提供するBox
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#[derive(Debug, Clone)]
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pub struct RandomBox {
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// 簡易線形合同法による疑似乱数生成器
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seed: Arc<Mutex<u64>>,
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id: u64,
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}
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impl RandomBox {
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pub fn new() -> Self {
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static mut COUNTER: u64 = 0;
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let id = unsafe {
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COUNTER += 1;
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COUNTER
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};
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// 現在時刻を種として使用
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let seed = std::time::SystemTime::now()
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.duration_since(std::time::UNIX_EPOCH)
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.unwrap()
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.as_nanos() as u64;
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Self {
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seed: Arc::new(Mutex::new(seed)),
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id,
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}
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}
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/// 種を設定
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pub fn seed(&self, new_seed: Box<dyn NyashBox>) -> Box<dyn NyashBox> {
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if let Some(int_box) = new_seed.as_any().downcast_ref::<IntegerBox>() {
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*self.seed.lock().unwrap() = int_box.value as u64;
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Box::new(StringBox::new("Seed set"))
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} else {
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Box::new(StringBox::new("Error: seed() requires integer input"))
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}
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}
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/// 次の乱数を生成（線形合同法）
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fn next_random(&self) -> u64 {
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let mut seed = self.seed.lock().unwrap();
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// 線形合同法の定数（Numerical Recipes より）
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*seed = seed.wrapping_mul(1664525).wrapping_add(1013904223);
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*seed
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}
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/// 0.0-1.0の浮動小数点乱数
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pub fn random(&self) -> Box<dyn NyashBox> {
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let r = self.next_random();
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let normalized = (r as f64) / (u64::MAX as f64);
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Box::new(FloatBox::new(normalized))
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}
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/// 指定範囲の整数乱数
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pub fn randInt(&self, min: Box<dyn NyashBox>, max: Box<dyn NyashBox>) -> Box<dyn NyashBox> {
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if let (Some(min_int), Some(max_int)) = (
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min.as_any().downcast_ref::<IntegerBox>(),
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max.as_any().downcast_ref::<IntegerBox>()
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) {
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if min_int.value > max_int.value {
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return Box::new(StringBox::new("Error: min must be <= max"));
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}
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let range = (max_int.value - min_int.value + 1) as u64;
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let r = self.next_random() % range;
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Box::new(IntegerBox::new(min_int.value + r as i64))
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} else {
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Box::new(StringBox::new("Error: randInt() requires two integer inputs"))
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}
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}
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/// true/falseのランダム選択
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pub fn randBool(&self) -> Box<dyn NyashBox> {
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let r = self.next_random();
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Box::new(BoolBox::new(r % 2 == 0))
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}
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/// 配列からランダム選択
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pub fn choice(&self, array: Box<dyn NyashBox>) -> Box<dyn NyashBox> {
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if let Some(array_box) = array.as_any().downcast_ref::<ArrayBox>() {
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let length = array_box.length().to_string_box().value.parse::<i64>().unwrap_or(0);
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if length == 0 {
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return Box::new(StringBox::new("Error: cannot choose from empty array"));
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}
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let index = self.next_random() % (length as u64);
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match array_box.get(index as usize) {
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Some(element) => element,
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None => Box::new(StringBox::new("Error: index out of bounds")),
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}
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} else {
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Box::new(StringBox::new("Error: choice() requires array input"))
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}
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}
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/// 配列をシャッフル
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pub fn shuffle(&self, array: Box<dyn NyashBox>) -> Box<dyn NyashBox> {
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if let Some(array_box) = array.as_any().downcast_ref::<ArrayBox>() {
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let length = array_box.length().to_string_box().value.parse::<i64>().unwrap_or(0);
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if length <= 1 {
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return array;
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}
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// 新しい配列を作成
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let shuffled = ArrayBox::new();
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// 元の配列の要素を全て新しい配列にコピー
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for i in 0..length {
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if let Some(element) = array_box.get(i as usize) {
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shuffled.push(element);
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}
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}
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// 簡易シャッフル実装（完全なFisher-Yatesは複雑なので）
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// 代わりに、元の配列からランダムに選んで新しい配列を作る
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let result = ArrayBox::new();
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let mut remaining_indices: Vec<usize> = (0..length as usize).collect();
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while !remaining_indices.is_empty() {
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let random_idx = (self.next_random() % remaining_indices.len() as u64) as usize;
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let actual_idx = remaining_indices.remove(random_idx);
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if let Some(element) = array_box.get(actual_idx) {
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result.push(element);
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}
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}
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Box::new(result)
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} else {
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Box::new(StringBox::new("Error: shuffle() requires array input"))
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}
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}
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/// ランダムな文字列生成
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pub fn randString(&self, length: Box<dyn NyashBox>) -> Box<dyn NyashBox> {
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if let Some(len_int) = length.as_any().downcast_ref::<IntegerBox>() {
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if len_int.value < 0 {
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return Box::new(StringBox::new("Error: length must be positive"));
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}
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let chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
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let char_vec: Vec<char> = chars.chars().collect();
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let mut result = String::new();
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for _ in 0..len_int.value {
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let index = self.next_random() % (char_vec.len() as u64);
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result.push(char_vec[index as usize]);
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}
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Box::new(StringBox::new(&result))
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} else {
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Box::new(StringBox::new("Error: randString() requires integer length"))
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}
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}
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/// 指定確率でtrue
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pub fn probability(&self, prob: Box<dyn NyashBox>) -> Box<dyn NyashBox> {
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if let Some(float_box) = prob.as_any().downcast_ref::<FloatBox>() {
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if float_box.value < 0.0 || float_box.value > 1.0 {
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return Box::new(StringBox::new("Error: probability must be 0.0-1.0"));
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}
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let r = self.next_random() as f64 / u64::MAX as f64;
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Box::new(BoolBox::new(r < float_box.value))
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} else if let Some(int_box) = prob.as_any().downcast_ref::<IntegerBox>() {
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let prob_val = int_box.value as f64;
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if prob_val < 0.0 || prob_val > 1.0 {
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return Box::new(StringBox::new("Error: probability must be 0.0-1.0"));
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}
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let r = self.next_random() as f64 / u64::MAX as f64;
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Box::new(BoolBox::new(r < prob_val))
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} else {
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Box::new(StringBox::new("Error: probability() requires numeric input"))
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}
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}
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}
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impl NyashBox for RandomBox {
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fn type_name(&self) -> &'static str {
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"RandomBox"
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}
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fn to_string_box(&self) -> StringBox {
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StringBox::new("RandomBox()")
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}
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fn clone_box(&self) -> Box<dyn NyashBox> {
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Box::new(self.clone())
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}
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fn equals(&self, other: &dyn NyashBox) -> BoolBox {
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if let Some(other_random) = other.as_any().downcast_ref::<RandomBox>() {
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BoolBox::new(self.id == other_random.id)
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} else {
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BoolBox::new(false)
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}
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}
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fn as_any(&self) -> &dyn Any {
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self
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}
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fn box_id(&self) -> u64 {
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self.id
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}
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}
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impl Display for RandomBox {
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fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
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write!(f, "RandomBox()")
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}
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} |