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`#assert` is a new static assertion statement that will let us write tests for the new constant evaluation infrastructure that we are working on. `#assert` works by lowering to a `Builtin.poundAssert` SIL instruction. The constant evaluation infrastructure will look for these SIL instructions, const-evaluate their conditions, and emit errors if the conditions are non-constant or false. This commit implements parsing, typechecking and SILGen for `#assert`.
14 lines
327 B
Swift
14 lines
327 B
Swift
// RUN: %target-typecheck-verify-swift -enable-experimental-static-assert
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#assert(true)
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#assert(true, "error message")
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#assert(false)
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#assert(false, "error message")
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#assert(123) // expected-error{{'Int' is not convertible to 'Bool'}}
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#assert(123, "error message") // expected-error{{'Int' is not convertible to 'Bool'}}
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