assert and assert_eq aren't parsed as an expression

[jfecher]

Aim

Writing code using match statements, where each arm is an expression:

match _b {
    Foo::C(_) => assert(false),
    Foo::B(x) => assert_eq(x, 3),
    _ => assert(false),
}

Expected Behavior

The program to parse

Bug

Expected an expression but found 'assert' on the match branch.

This can also be seen with let _ = assert(true);

This is confusing since these look like normal function calls but are not allowed where other function calls are.

To Reproduce

Workaround

None

Workaround Description

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Additional Context

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Project Impact

None

Blocker Context

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Nargo Version

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NoirJS Version

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Proving Backend Tooling & Version

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