(call) - Python

function calls

(call receiver? args?)

Where:

1. receiver: the function being called (the func in func()) *
2. args: arguments supplied to the call *

Matching:

1. regular calls, e.g. func()
2. method calls, e.g. obj.method()
3. calls with generator expressions, e.g. func(x for x in items)

Behavior

• When a call uses a generator expression as its sole argument, you can match it with (gen ...) in the args slot.

Examples

Find print calls that emit string messages.

(call (id "print") (arg 1 (str)))

Selects in lines { 1 } but not in { 2, 3 }:

print("hello")
print(123)
log("hello")

---

Locate sum calls that iterate over prices with a generator expression.

(call (id "sum") (gen (id price)))

Selects in lines { 1 } but not in { 2, 3 }:

total = sum(price for price in prices)
total = sum(cost for cost in costs)
total = sum([price for price in prices])

---

Find open calls that pass a binary mode.

(call (id "open") (arg 2 (str /b/)))

Selects in lines { 1, 3 } but not in { 2 }:

open(path, "rb")
open(path, "r")
open(path, "wb")

---

Arguments

receiver

1. Identifier: shorthand for (id)
   
2. Pattern: shorthand for (id)
   
3. (:into)
4. (:nearest)
5. (:and)
6. (:or)
7. (:not)
8. (:text)
9. (:kind)
10. (:replace)
11. (:replace-in)
12. (:capture)
13. (:ref)
14. (call)
15. (fun)
16. (gen)
17. (id)
18. (num)
19. (str)

args

1. (arg)
   
2. (gen)
   
3. (:into)
4. (:nearest)
5. (:and)
6. (:or)
7. (:not)
8. (:text)
9. (:kind)
10. (:replace)
11. (:replace-in)
12. (:capture)