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// RUN: %target-typecheck-verify-swift
struct IntRange<Int> : Sequence, IteratorProtocol {
typealias Element = (Int, Int)
func next() -> (Int, Int)? {}
typealias Iterator = IntRange<Int>
func makeIterator() -> IntRange<Int> { return self }
}
func for_each(r: Range<Int>, iir: IntRange<Int>) { // expected-note {{'r' declared here}}
var sum = 0
// Simple foreach loop, using the variable in the body
for i in r {
sum = sum + i
}
// Check scoping of variable introduced with foreach loop
i = 0 // expected-error{{cannot find 'i' in scope; did you mean 'r'?}}
// For-each loops with two variables and varying degrees of typedness
for (i, j) in iir {
sum = sum + i + j
}
for (i, j) in iir {
sum = sum + i + j
}
for (i, j) : (Int, Int) in iir {
sum = sum + i + j
}
// Parse errors
// FIXME: Bad diagnostics; should be just 'expected 'in' after for-each patter'.
for i r { // expected-error {{found an unexpected second identifier in constant declaration}}
} // expected-note @-1 {{join the identifiers together}}
// expected-note @-2 {{join the identifiers together with camel-case}}
// expected-error @-3 {{expected 'in' after for-each pattern}}
// expected-error @-4 {{expected Sequence expression for for-each loop}}
for i in r sum = sum + i; // expected-error{{expected '{' to start the body of for-each loop}}
}
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