Added file and main

SLS_Python/sls/__main__.py

@@ -0,0 +1,33 @@
+import sys
+from .meta import print_version
+from .repl import repl
+from .file import run_file
+
+
+def main() -> int:
+    args = sys.argv[1:]
+
+    version = False
+    filename = None
+
+    if len(args) == 1:
+        if args[0] in ("--version", "-v"):
+            version = True
+        else:
+            filename = args[0]
+    elif len(args) > 1:
+        print("Too many arguments!")
+        return 1
+
+    if version:
+        print_version()
+        return 0
+
+    if filename is not None:
+        return run_file(filename)
+
+    return repl()
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())

SLS_Python/sls/builtin.py

@@ -0,0 +1,9 @@
+
+from typing import TYPE_CHECKING
+
+if TYPE_CHECKING:
+	from .interpreter import InterpreterState
+
+
+def load_builtins(interpreter_state: "InterpreterState") -> bool:
+	return True

SLS_Python/sls/file.py

@@ -0,0 +1,37 @@
+from pathlib import Path
+from sls.lexer import LexerInfo, lexical_analysis, Token
+from sls.interpreter import InterpreterState
+
+
+def exec_file(interpreter_state: InterpreterState, filename: str) -> bool:
+    path = Path(filename)
+
+    if not path.exists():
+        print(f"Cannot read file: {filename}")
+        return False
+
+    try:
+        code = path.read_text()
+    except Exception:
+        print(f"Cannot read file: {filename}")
+        return False
+
+    lexer_info = LexerInfo(filename=filename, source_code=code)
+
+    tokens: list[Token] = lexical_analysis(lexer_info)
+
+    for tok in tokens:
+        if not interpreter_state.execute(tok):
+            print("A runtime error occurred!")
+            return False
+
+    return True
+
+def run_file(filename: str) -> int:
+    print(f"Executing file: {filename}")
+
+    interpreter_state = InterpreterState()
+
+    success = exec_file(interpreter_state, filename)
+
+    return 0 if success else 1

SLS_Python/sls/interpreter.py

@@ -19,8 +19,7 @@ from .lexer import (
     IntegerBuiltInType,
 )
 
-# Optional: import builtins loader if you have one
+from .builtin import load_builtins
-# from .builtin import load_builtins  # (expected: Callable[[InterpreterState], bool])
 
 
 class StackType(Enum):
@@ -74,7 +73,7 @@ class InterpreterState:
         - functions: dict mapping names to FunctionItem
     """
 
-    def __init__(self, load_builtins: Optional[Callable[["InterpreterState"], bool]] = None):
+    def __init__(self):
         self.stack: List[StackEntry] = []
         self.functions: Dict[str, FunctionItem] = {}
         # Optionally load builtins; caller can pass a loader function

SLS_Python/sls/repl.py

@@ -1,7 +1,6 @@
 from .meta import print_version
-from .lexer import Lexer
+from .lexer import LexerInfo, lexical_analysis
 from .interpreter import InterpreterState
-from .errors import SlsError
 
 
 REPL_FILE_NAME = "<STDIN>"
@@ -58,12 +57,12 @@ def repl() -> int:
             return 0
 
         # Create a fresh lexer each iteration
-        lexer = Lexer(REPL_FILE_NAME, line)
+        lexer_info = LexerInfo(filename=REPL_FILE_NAME, source_code=line)
 
         try:
-            tokens = lexer.lexical_analysis()
+            tokens = lexical_analysis(lexer_info)
-        except SlsError as err:
+        except Exception as err:
-            print(err.message)
+            print(err)
             continue
 
         # Execute tokens in order
@@ -73,8 +72,8 @@ def repl() -> int:
                 if not ok:
                     print("A runtime error occurred!")
                     break
-            except SlsError as err:
+            except Exception as err:
-                print(err.message)
+                print(err)
                 break
 
         print_top_of_stack(interpreter)