Initial commit - fix problems & refactor code

main.py

@@ -0,0 +1,59 @@
+import os
+import sys
+
+from core.parse_evaluate import parseEvaluate
+
+def repl() -> None:
+    stdlib_path = 'stdlib.lsp'
+    if os.path.isfile(stdlib_path):
+        with open(stdlib_path, 'r', encoding='utf‑8') as f:
+            parseEvaluate(f.read(), load=True)
+    else:
+        print('>> Warning: standard library not found.')
+
+    if not sys.stdin.isatty():
+        parseEvaluate(sys.stdin.read(), load=True)
+        print('\ninput exhausted, exiting REPL...')
+        return
+
+    prompt      = '>>> '
+    exit_cmds   = {':q', ':quit', ':exit', 'exit', 'quit'}
+    load_cmds   = {':l', ':load'}
+
+    while True:
+        try:
+            line = input(prompt).strip()
+        except (KeyboardInterrupt, EOFError):
+            print("\nexiting REPL...")
+            break
+
+        if not line:
+            continue
+
+        parts = line.split(None, 1)
+        if not parts:
+            continue
+
+        token = parts[0]
+
+        if token in exit_cmds:
+            print("\nexiting REPL...")
+            break
+
+        if token in load_cmds:
+            filename = parts[1].strip() if len(parts) > 1 else ''
+            if not filename:
+                print(prompt + "Error: no filename provided.")
+                continue
+            if not os.path.isfile(filename):
+                print(prompt + f'Error: no such file "{filename}"')
+                continue
+            with open(filename, 'r', encoding='utf-8') as f:
+                parseEvaluate(f.read(), load=True)
+            print()
+            continue
+
+        print(parseEvaluate(line))
+
+if __name__ == '__main__':
+    repl()