`as` operator raises Parse Error and conversion failed even when corresponding constructor exists

[lethefrost]

Tested versions

• Reproducible in 4.4.1.stable

System information

Godot v4.4.1.stable - macOS Sequoia (15.5.0) - Single-window, 2 monitors - Metal (Forward+) - integrated Apple M2 Max (Apple8) - Apple M2 Max (12 threads)

Issue description

In the documentation, the as operator/keyword can be used to cast between built-in types. And in the same documentation, it gives the following snippet as an example:

var my_int: int
my_int = "123" as int # The string can be converted to int.
my_int = Vector2() as int # A Vector2 can't be converted to int, this will cause an error.

And the int built-in type does have a constructor that can construct from String, so "123" as int should work.

But in Godot 4.4.1.stable, any "123" as int raises Parse Error: Cannot cast a value of type "String" as "int", whereas int("123") works fine.

Not yet noticed another case that a corresponding constructor exists but as keyword casting fails other than String as int.

Steps to reproduce

Try "123" as int

Minimal reproduction project (MRP)

N/A

[Notgoyome]

2d396fb seems to be related
they commented these parts.
godot is using Variant::can_convert_strict instead of Variant::can_convert to check if type is compatible in GDScriptAnalyzer::check_type_compatibility() and in Variant::construct too.

my ideas:

1. put it as can_convert to allow conversion.

2. bad idea I think: allow as string as int in can_convert_strict

interested to solvet this issue, will make a PR with my 1st idea :3

[lethefrost]

2d396fb seems to be related they commented these parts. godot is using Variant::can_convert_strict instead of Variant::can_convert to check if type is compatible in GDScriptAnalyzer::check_type_compatibility() and in Variant::construct too.

my ideas:

1. put it as can_convert to allow conversion.
2. bad idea I think: allow as string in can_convert_strict

interested to solvet this issue, will make a PR with my 1st idea :3

Thanks! looks like workable solutions. just a quick question -- was as string intentional? I thought it probably should be as int? I wasn’t sure if it was a small typo or maybe I misunderstood the plan.

[Notgoyome]

2d396fb seems to be related they commented these parts. godot is using Variant::can_convert_strict instead of Variant::can_convert to check if type is compatible in GDScriptAnalyzer::check_type_compatibility() and in Variant::construct too.

my ideas:

1. put it as can_convert to allow conversion.
2. bad idea I think: allow as string in can_convert_strict

interested to solvet this issue, will make a PR with my 1st idea :3

Thanks! looks like workable solutions. just a quick question -- was as string intentional? I thought it probably should be as int? I wasn’t sure if it was a small typo or maybe I misunderstood the plan.

Mb wanted to say as int