first commit

2026-04-08 21:25:17 +03:00
parent 3681b8eccd
commit 371b14c5e3
173 changed files with 14126 additions and 0 deletions
--- a/javascript/RunJS.java
+++ b/javascript/RunJS.java
@@ -0,0 +1,71 @@
+import javax.script.ScriptContext;
+import javax.script.ScriptEngine;
+import javax.script.ScriptEngineManager;
+import javax.script.ScriptException;
+import java.io.BufferedReader;
+import java.io.FileReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.nio.charset.StandardCharsets;
+
+public final class RunJS {
+    private RunJS() {
+    }
+
+    @SuppressWarnings({"MethodMayBeStatic", "unused"})
+    public static class IO {
+        private final BufferedReader reader = new BufferedReader(new InputStreamReader(System.in, StandardCharsets.UTF_8));
+
+        private final ScriptEngine engine;
+        public IO(final ScriptEngine engine) {
+            this.engine = engine;
+        }
+
+        public void print(final String message) {
+            System.out.print(message);
+        }
+
+        public void println(final String message) {
+            System.out.println(message);
+        }
+
+        public void include(final String file) throws IOException, ScriptException {
+            engine.getContext().setAttribute(ScriptEngine.FILENAME, file, ScriptContext.ENGINE_SCOPE);
+            engine.eval(new FileReader(file, StandardCharsets.UTF_8));
+        }
+        
+        public String readLine(final String prompt) throws IOException {
+            if (prompt != null) {
+                System.out.print(prompt);
+            }
+            return reader.readLine();
+        }
+    }
+
+    public static void main(final String[] args) throws ScriptException {
+        final String script = args.length == 0 ? "examples.js" : args[0];
+
+        System.setProperty("polyglot.engine.WarnInterpreterOnly", "false");
+        System.setProperty("polyglot.js.strict", "true");
+
+        final ScriptEngine engine = new ScriptEngineManager().getEngineByName("Graal.js");
+        if (engine == null) {
+            System.err.println("Graal.js not found");
+            System.err.println("Use the following command line to run RunJS:");
+            System.err.println("java --module-path=graal -cp . RunJS");
+            return;
+        }
+
+        engine.put("polyglot.js.allowIO", true);
+        engine.put("polyglot.js.allowHostAccess", true);
+        engine.put("polyglot.js.ecmascript-version", "2022");
+        engine.put("io", new IO(engine));
+
+        engine.eval("var global = this;");
+        engine.eval("var println = function() { io.println(Array.prototype.map.call(arguments, String).join(' ')); };");
+        engine.eval("var print   = function() { io.print  (Array.prototype.map.call(arguments, String).join(' ')); };");
+        engine.eval("var include = function(file) { io.include(file); }");
+        engine.eval("var readLine = function(prompt) { return io.readLine(prompt); }");
+        engine.eval("io.include('" + script + "')");
+    }
+}