4 files changed, 30 insertions(+), 11 deletions(-)

M src/nlox.nim
M src/nloxpkg/lox.nim
A test.lox
M tests/test1.nim

@@ 2,6 2,18 @@
 # uses this file as the main entry point of the application.
 
 import nloxpkg/lox
+import os
+
+let usage*: string = "Usage: nlox [script]"
 
 when isMainModule:
-  run()
+    let params = commandLineParams()
+    let num_params = params.len()
+
+    if num_params > 1:
+        echo usage
+        quit(64)
+    elif num_params == 1:
+      run_file(params[0])
+    else:
+      run_prompt()<
\ No newline at end of file

@@ 1,11 1,17 @@
-# This is just an example to get you started. Users of your hybrid library will
-# import this file by writing ``import treewalkpkg/submodule``. Feel free to rename or
-# remove this file altogether. You may create additional modules alongside
-# this file as required.
+#! The top-level of the Lox interpreter.
 
-let usage*: string = "Usage: nlox [script]"
+# Interpret Lox input, results to stdout
+proc run(source: string) =
+    echo source
 
-# Entrypoint - java's main
-proc run*() =
-    echo usage
-    # Check arg num
+# Interpret a source file
+proc run_file*(path: string) =
+    run(readFile(path))
+
+# Open a REPL
+proc run_prompt*() =
+    while true:
+        stdout.write("> ")
+        let line = stdin.readLine()
+        if line.len() == 0: break
+        run(line)<
\ No newline at end of file

@@ 0,0 1,1 @@
+print "hello, world";<
\ No newline at end of file

@@ 7,6 7,6 @@
 
 import unittest
 
-import nloxpkg/lox
+import nlox
 test "correct usage message":
   check usage == "Usage: nlox [script]"