adds chap6.FileRunner

src/chap6/BasicFileInterpreter.java

@@ -0,0 +1,28 @@
+package chap6;
+import stone.*;
+import stone.ast.ASTree;
+import stone.ast.NullStmnt;
+import java.io.FileReader;
+import java.io.FileNotFoundException;
+
+public class BasicFileInterpreter {
+    public static void main(String[] args)
+        throws ParseException, FileNotFoundException
+    {
+        run(new BasicParser(), new BasicEnv(), args[0]);
+    }
+
+    public static void run(BasicParser bp, Environment env, String fileName)
+        throws ParseException, FileNotFoundException
+    {
+        FileReader reader = new FileReader(fileName);
+        Lexer lexer = new Lexer(reader);
+        while (lexer.peek(0) != Token.EOF) {
+            ASTree t = bp.parse(lexer);
+            if (!(t instanceof NullStmnt)) {
+                Object r = ((BasicEvaluator.ASTreeEx)t).eval(env);
+                System.out.println("=> " + r);
+            }
+        }
+    }
+}

src/chap6/FileRunner.java

@@ -0,0 +1,11 @@
+package chap6;
+import javassist.gluonj.util.Loader;
+
+// To run,
+// java -cp ./bin:gluonj.jar chap6.FileRunner src/chap6/sum.stone
+
+public class FileRunner {
+    public static void main(String[] args) throws Throwable {
+        Loader.run(BasicFileInterpreter.class, args, BasicEvaluator.class);
+    }
+}

src/chap6/sum.stone

@@ -0,0 +1,7 @@
+sum = 0
+i = 1
+while i < 10 {
+  sum = sum + 1
+  i = i + 1
+}
+sum