Upload mantra.py

mantra.py

@@ -0,0 +1,53 @@
+#!/usr/bin/env python3
+# mantra.py — MANTRA CLI
+import sys
+import os
+
+sys.path.insert(0, os.path.dirname(__file__))
+
+from runtime.runtime import run_file, run_source
+from sha256.sha256_impl import sha256_hex
+
+def cmd_run(path):
+    result = run_file(path)
+    if result is not None:
+        from runtime.evaluator import Evaluator
+        ev = Evaluator()
+        print(ev._display(result))
+
+def cmd_hash(data: str):
+    print(sha256_hex(data))
+
+def cmd_eval(expr: str):
+    result = run_source(expr)
+    if result is not None:
+        from runtime.evaluator import Evaluator
+        ev = Evaluator()
+        print(ev._display(result))
+
+def cmd_test():
+    import subprocess
+    sys.exit(subprocess.call([sys.executable, '-m', 'pytest', 'tests/', '-v']))
+
+def usage():
+    print("MANTRA language interpreter")
+    print()
+    print("Usage:")
+    print("  mantra run <file.m>      run a MANTRA source file")
+    print("  mantra eval <expr>       evaluate an expression")
+    print("  mantra hash <string>     SHA-256 hex of a string")
+    print("  mantra test              run test suite")
+
+def main():
+    if len(sys.argv) < 2:
+        usage()
+        return
+    cmd = sys.argv[1]
+    if cmd == 'run'  and len(sys.argv) >= 3: cmd_run(sys.argv[2])
+    elif cmd == 'eval' and len(sys.argv) >= 3: cmd_eval(sys.argv[2])
+    elif cmd == 'hash' and len(sys.argv) >= 3: cmd_hash(sys.argv[2])
+    elif cmd == 'test': cmd_test()
+    else: usage()
+
+if __name__ == '__main__':
+    main()