Improve support for functions #2

smnp/error/base.py

@@ -0,0 +1,2 @@
+class SmnpException(Exception):
+    pass

smnp/error/function.py

@@ -0,0 +1,6 @@
+from smnp.error.base import SmnpException
+
+
+class IllegalFunctionInvocationException(SmnpException):
+    def __init__(self, expected, found):
+        self.msg = f"Illegal function invocation\n\nExpected signature:\n{expected}\n\nFound:\n{found}"

smnp/error/runtime.py

@@ -1,4 +1,7 @@
-class RuntimeException(Exception):
+from smnp.error.base import SmnpException
+
+
+class RuntimeException(SmnpException):
     def __init__(self, pos, msg):
         posStr = "" if pos is None else f" [line {pos[0]+1}, col {pos[1]+1}]"
         self.msg = f"Runtime error{posStr}:\n{msg}"

smnp/error/syntax.py

@@ -1,4 +1,7 @@
-class SyntaxException(Exception):
+from smnp.error.base import SmnpException
+
+
+class SyntaxException(SmnpException):
     def __init__(self, pos, msg):        
         posStr = "" if pos is None else f" [line {pos[0]+1}, col {pos[1]+1}]"
         self.msg = f"Syntax error{posStr}:\n{msg}"