scala binary can execute scripts

Author: anatoliykmetyuk

dist/bin/scala

@@ -40,8 +40,10 @@ source "$PROG_HOME/bin/common"
 declare -a residual_args
 execute_repl=false
 execute_run=false
+execute_script=false
 with_compiler=false
 class_path_count=0
+is_at_first_residual_argument=true
 CLASS_PATH=""
 
 # Little hack to check if all arguments are options
@@ -79,17 +81,27 @@ while [[ $# -gt 0 ]]; do
       addDotcOptions "${1}"
       shift ;;
     *)
+      if [ $is_at_first_residual_argument == true ] && [[ "$1" == *.scala ]]; then
+        execute_script=true
+        target_script="$1"
+      fi
+      is_at_first_residual_argument=false
       residual_args+=("$1")
       shift
       ;;
 
   esac
 done
-if [ $execute_repl == true ] || ([ $execute_run == false ] && [ $options_indicator == 0 ]); then
+
+if [ $execute_repl == true ] || [ $execute_script == true ] || ([ $execute_run == false ] && [ $options_indicator == 0 ]); then
   if [ "$CLASS_PATH" ]; then
     cp_arg="-classpath \"$CLASS_PATH\""
   fi
-  echo "Starting scala3 REPL..."
+  if [ $execute_script == true ]; then
+    echo "Running script $target_script"
+  else
+    echo "Starting scala3 REPL..."
+  fi
   eval "\"$PROG_HOME/bin/scalac\" $cp_arg ${java_options[@]} -repl ${residual_args[@]}"
 elif [ $execute_repl == true ] || [ ${#residual_args[@]} -ne 0 ]; then
   cp_arg="$DOTTY_LIB$PSEP$SCALA_LIB"