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Forbid duplicate namespace/static class members #2805

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(Barely) fixes #2793.

Changes proposed in this pull request:
⯈ Check diagnostics after initialize (VERY BAD)
⯈ Forbid duplicate namespace/static class members

Requiring the compiler to check diagnostics after initialize is VERY BAD, and ideally someone should find a way to prevent the compiler from attempting to compile the duplicate global (which it shouldn't see to begin with).

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This is unfortunately necessary for the next commit. This is overall bad
for DX, since fewer errors are shown to the user at once.
This isn't fully TS compatible, but refactors targeting internal names,
scoping, merging, etc. are needed to become more compatible. For
instance, if namespace members had unique separators in internal names,
then a non-exported namespace member would override a static class
member, assuming the names are the same.

Note that this change doesn't prevent the compiler from attempting to
compile the duplicate global, and hence the previous commit is needed
for this to work fully.

Barely fixes AssemblyScript#2793.
@CountBleck CountBleck force-pushed the forbid-duplicate-members branch from 8a76750 to 4b4d68c Compare November 21, 2023 03:19
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I wonder why do we need to split lots of test.

@CountBleck
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I wonder why do we need to split lots of test.

Yeah, checking diagnostics after initialize is VERY BAD.

@HerrCai0907
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Cannot detect this case

namespace A {
export function foo(): i32 {
return 1;
}
}

class A {
static foo(): i32 {
return 2;
}
}

export function _start(): void {
trace("", 1, A.foo());
}

@CountBleck CountBleck marked this pull request as draft November 22, 2023 18:56
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Cannot detect this case

That's not good at all.

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asc crash when use same name in class and namespace
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