Rename dir: compiler -> crates

crates/erg_compiler/lib/std/_erg_bool.py

@@ -0,0 +1,17 @@
+from _erg_nat import Nat
+from _erg_result import Error
+
+class Bool(Nat):
+    def try_new(b: bool): # -> Result[Nat]
+        if b == True or b == False:
+            return Bool(b)
+        else:
+            return Error("Bool can't be other than True or False")
+
+    def __str__(self) -> str:
+        if self:
+            return "True"
+        else:
+            return "False"
+    def __repr__(self) -> str:
+        return self.__str__()