Python: Better API for parameters.

python/ql/test/library-tests/parameters/Annotations.expected

@@ -0,0 +1,4 @@
+| args | test.py:5:13:5:22 | Subscript |
+| b | test.py:2:12:2:14 | str |
+| d | test.py:2:27:2:29 | int |
+| kwargs | test.py:5:34:5:47 | Subscript |

python/ql/test/library-tests/parameters/Annotations.ql

@@ -0,0 +1,6 @@
+
+import python
+
+
+from Parameter p
+select p.getName(), p.getAnnotation()

python/ql/test/library-tests/parameters/Defaults.expected

@@ -0,0 +1,2 @@
+| c | test.py:2:19:2:22 | None |
+| d | test.py:2:31:2:34 | True |

python/ql/test/library-tests/parameters/Defaults.ql

@@ -0,0 +1,6 @@
+
+import python
+
+
+from Parameter p
+select p.getName(), p.getDefault()

python/ql/test/library-tests/parameters/Special.expected

@@ -0,0 +1,6 @@
+| a | normal |
+| args | varargs |
+| b | normal |
+| c | normal |
+| d | normal |
+| kwargs | kwargs |

python/ql/test/library-tests/parameters/Special.ql

@@ -0,0 +1,13 @@
+
+
+import python
+
+from Parameter p, string type
+where
+p.isKwargs() and type = "kwargs"
+or
+p.isVarargs() and type = "varargs"
+or
+not p.isKwargs() and not p.isVarargs() and type = "normal"
+
+select p.getName(), type

python/ql/test/library-tests/parameters/test.py

@@ -0,0 +1,6 @@
+
+def f(a, b:str, c=None, d:int=True):
+    pass
+
+def g(*args:Tuple[int], **kwargs:Dict[str, int]):
+    pass