Develop multi thread system

Author: 梶塚太智

examples/thread.stk

@@ -0,0 +1,10 @@
+( (name) var
+    1 4 1 range (i) (
+        name i concat print
+        0.7 sleep
+    ) for
+) (hey) var
+
+((太郎) hey eval) thread 
+((次郎) hey eval) thread
+(三郎) hey eval

src/main.rs

@@ -2,6 +2,7 @@ use powershell_script::PsScriptBuilder;
 use rand::seq::SliceRandom;
 use std::collections::HashMap;
 use std::env;
+use std::thread;
 use std::fs::File;
 use std::io::{self, Error, Read, Write};
 use std::thread::sleep;
@@ -143,6 +144,7 @@ impl Type {
 }
 
 /// プログラム実行を管理
+#[derive(Clone, Debug)]
 struct Executor {
     stack: Vec<Type>,              // スタック
     memory: HashMap<String, Type>, // 変数のメモリ領域
@@ -564,6 +566,14 @@ impl Executor {
                 }
             }
 
+            "thread" => {
+                let code = self.pop_stack().get_string();
+                let mut executor = self.clone();
+                thread::spawn(move || {
+                    executor.evaluate_program(code)
+                });
+            }
+
             // シェルコマンドを実行
             "shell" => {
                 let ps = PsScriptBuilder::new()