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e66095b10a
Until now, only ">=" was supported in #if swift() expressions, for example: ```#if swift(>=2.1) ```#endif This means that if we want to evaluate code only when the language version is less than a particular version we need to do the following: ```#if !swift(>=2.1) ```#endif An alernative to make this more readable (the "!" can be easily missed in a code review) is to introduce another supported unary operator, "<". The previous example could be rewritten like this: ```#if swift(<2.1) ```#endif This commit adds support for that unary operator, along with some tests.
120 lines
2.4 KiB
Swift
120 lines
2.4 KiB
Swift
// RUN: %target-typecheck-verify-swift
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#if swift(>=1.0)
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let w = 1
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#else
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// This shouldn't emit any diagnostics.
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asdf asdf asdf asdf
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#endif
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#if swift(<1.2)
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#endif
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#if swift(<4.2)
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let a = 1
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#else
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let a = 2
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#endif
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#if swift(<1.0)
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// This shouldn't emit any diagnostics.
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asdf asdf asdf asdf
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#endif
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#if swift(>=1.2)
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#if os(iOS)
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let z = 1
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#else
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let z = 1
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#endif
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#else
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// This shouldn't emit any diagnostics.
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asdf asdf asdf asdf
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#if os(iOS)
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// This shouldn't emit any diagnostics.
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asdf asdf asdf asdf
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#else
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// This shouldn't emit any diagnostics.
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asdf asdf asdf asdf
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#endif
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// This shouldn't emit any diagnostics.
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asdf asdf asdf asdf
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#endif
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#if !swift(>=1.0)
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// This shouldn't emit any diagnostics.
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%#^*&
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#endif
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#if !swift(<1000.0)
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// This shouldn't emit any diagnostics.
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%#^*&
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#endif
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#if swift(">=7.1") // expected-error {{unexpected platform condition argument: expected a unary comparison '>=' or '<'; for example, '>=2.2' or '<2.2'}}
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#endif
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#if swift("<7.1") // expected-error {{unexpected platform condition argument: expected a unary comparison '>=' or '<'; for example, '>=2.2' or '<2.2'}}
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#endif
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#if swift(">=2n.2") // expected-error {{unexpected platform condition argument: expected a unary comparison '>=' or '<'; for example, '>=2.2' or '<2.2'}}
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#endif
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#if swift("") // expected-error {{unexpected platform condition argument: expected a unary comparison '>=' or '<'; for example, '>=2.2' or '<2.2'}}
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#endif
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#if swift(>=2.2.1)
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_ = 2.2.1 // expected-error {{expected named member of numeric literal}}
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#endif
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class C {
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#if swift(>=2.2.1)
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let val = 2.2.1 // expected-error {{expected named member of numeric literal}}
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#endif
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}
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#if swift(>=2.0, *) // expected-error {{expected only one argument to platform condition}}
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#endif
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#if swift(>=, 2.0) // expected-error {{expected only one argument to platform condition}}
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#endif
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protocol P {
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#if swift(>=2.2)
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associatedtype Index
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#else
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// There should be no warning here.
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typealias Index
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// There should be no error here.
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adsf asdf asdf
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%#^*&
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func foo(sdfsdfdsf adsf adsf asdf adsf adsf)
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#endif
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}
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#if swift(>=2.2)
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func foo() {}
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#else
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// There should be no error here.
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func foo(sdfsdfdsf adsf adsf asdf adsf adsf)
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#endif
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struct S {
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#if swift(>=2.2)
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let x: Int
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#else
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// There should be no error here.
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let x: @#$()%&*)@#$(%&*
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#endif
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}
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#if swift(>=2.2)
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var zzz = "zzz"
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#else
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// There should be no error here.
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var zzz = zzz
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#endif
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