has_symbol.swift

// RUN: %empty-directory(%t)
// RUN: split-file %s %t
// RUN: %target-swift-frontend -emit-module -emit-module-path %t/Library.swiftmodule -parse-as-library %t/Library.swift -enable-library-evolution
// RUN: %target-swift-frontend -typecheck -verify %t/Client.swift -I %t

// UNSUPPORTED: OS=windows-msvc

//--- Library.swift

publicfunc foo(){}
publicfunc bar(){}

//--- Client.swift

@_weakLinkedimport Library

if #_hasSymbol(foo){}
if #_hasSymbol(foo), #_hasSymbol(bar){}
guard #_hasSymbol(foo)else{fatalError()}
while #_hasSymbol(foo){}

if #_hasSymbol(foo)==false{} // expected-error {{expected '{' after 'if' condition}}

_ = #_hasSymbol(foo){} // expected-error {{#_hasSymbol may only be used as condition of}}

(#_hasSymbol(foo)?1:0) // expected-error {{#_hasSymbol may only be used as condition of}}

if !#_hasSymbol(foo){} // expected-error {{#_hasSymbol may only be used as condition of}}

iflet _ =Optional(5), !#_hasSymbol(foo){}{} // expected-error {{#_hasSymbol may only be used as condition of}}

if #_hasSymbol {} // expected-error {{expected '(' in #_hasSymbol directive}}

// expected-error@+3 {{expected ')' in #_hasSymbol condition}}
// expected-error@+2 {{expected '{' after 'if' condition}}
// expected-note@+1 {{to match this opening '('}}
if #_hasSymbol(struct){} // expected-error {{expected expression in #_hasSymbol}}

// expected-error@+3 {{expected ')' in #_hasSymbol condition}}
// expected-error@+2 {{expected '{' after 'if' condition}}
// expected-note@+1 {{to match this opening '('}}
if #_hasSymbol(foo bar){}

// expected-error@+2 {{expected ')' in #_hasSymbol condition}}
// expected-note@+1 {{to match this opening '('}}
if #_hasSymbol(foo{}