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Previously we would wait until CSApply, which would trigger their type-checking in `coercePatternToType`. This caused a number of bugs, and hampered solver-based completion, which does not run CSApply. Instead, form a conjunction of all the ExprPatterns present, which preserves some of the previous isolation behavior (though does not provide complete isolation). We can then modify `coercePatternToType` to accept a closure, which allows the solver to take over rewriting the ExprPatterns it has already solved. This then sets the stage for the complete removal of `coercePatternToType`, and doing all pattern type-checking in the solver.
21 lines
372 B
Swift
21 lines
372 B
Swift
// RUN: %target-typecheck-verify-swift
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// rdar://105781521
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enum MyEnum {
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case first(String)
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}
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func takeClosure(_ x: () -> Void) {}
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func test(value: MyEnum) {
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takeClosure {
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switch value {
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case .first(true):
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// expected-error@-1 {{expression pattern of type 'Bool' cannot match values of type 'String'}}
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break
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default:
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break
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}
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}
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}
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