BUG: function name erasure

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
35/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Stale
Tech stack
javascript, python
Domain
compilers

Research direction

Compare the Python example with the generated JavaScript shown in the issue, focusing on how function names are emitted. The work is done when translated functions retain their names so that StateFun.increment.name and similar reflection calls return the original function name.

Written by the indexing model from the issue text.

Description

IS: bug?
  1. the following python:
class StateFun:
    @staticmethod
    def increment(state, *_) -> None:
        state.count += 1
    @staticmethod
    def decrement(state, *_) -> None:
        state.count -= 1
  1. is translated as javascript with anonymous functions:
export var StateFun =  __class__ ('StateFun', [object], {
	__module__: __name__,
	get increment () {return function (state) {
		var _ = tuple ([].slice.apply (arguments).slice (1));
		state.count++;
	};},
	get decrement () {return function (state) {
		var _ = tuple ([].slice.apply (arguments).slice (1));
		state.count--;
	};},
});
  1. which makes it hard to recover function name for reflection: function (args) {...}
console.log(StateFun.increment.name) # will print "undefined"
  1. instead, it should use named functions everywhere: function <NAME-HERE> (args) {...}
console.log(StateFun.increment.name) # will print "increment"
Dominant language
Python
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