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//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
#if $Macros && hasAttribute(attached)
/// Specifies the module and type name for an externally-defined macro, which
/// must conform to the appropriate set of `Macro` protocols.
///
/// This macro can only be used to define other macros. For example:
///
/// macro stringify<T>(_ value: T) -> (T, String) =
/// #externalMacro(module: "ExampleMacros", type :"StringifyMacro")
///
/// Use of this macro in any other context is an error.
@freestanding(expression)
public macro externalMacro<T>(module: String, type: String) -> T =
Builtin.ExternalMacro
// File and path-related information
/// Produces a unique identifier for the given source file, comprised of
/// the module and file name.
@freestanding(expression)
public macro fileID<T: ExpressibleByStringLiteral>() -> T =
Builtin.FileIDMacro
/// Produces the complete path for the given source file.
@freestanding(expression)
public macro filePath<T: ExpressibleByStringLiteral>() -> T =
Builtin.FilePathMacro
/// Produces either the result of `#filePath` or `#file`, depending
/// on whether concise file paths (SE-0274) are enabled.
@freestanding(expression)
public macro file<T: ExpressibleByStringLiteral>() -> T =
Builtin.FileMacro
/// Produces a string representation of the current function name.
@freestanding(expression)
public macro function<T: ExpressibleByStringLiteral>() -> T =
Builtin.FunctionMacro
/// Produces the line number at which the macro is expanded.
@freestanding(expression)
public macro line<T: ExpressibleByIntegerLiteral>() -> T =
Builtin.LineMacro
/// Produces the column number at which the macro is expanded.
@freestanding(expression)
public macro column<T: ExpressibleByIntegerLiteral>() -> T =
Builtin.ColumnMacro
/// Produces the shared object handle for the macro expansion location.
@freestanding(expression)
public macro dsohandle() -> UnsafeRawPointer = Builtin.DSOHandleMacro
/// Produce the given warning message during compilation.
@freestanding(declaration)
public macro warning(_ message: String) = Builtin.WarningMacro
/// Produce the given error message during compilation.
@freestanding(declaration)
public macro error(_ message: String) = Builtin.ErrorMacro
#endif // $Macros && hasAttribute(attached)
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