xref: /openbsd/gnu/llvm/clang/include/clang/Basic/Lambda.h (revision 12c85518)
1 //===--- Lambda.h - Types for C++ Lambdas -----------------------*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 ///
9 /// \file
10 /// Defines several types used to describe C++ lambda expressions
11 /// that are shared between the parser and AST.
12 ///
13 //===----------------------------------------------------------------------===//
14 
15 
16 #ifndef LLVM_CLANG_BASIC_LAMBDA_H
17 #define LLVM_CLANG_BASIC_LAMBDA_H
18 
19 namespace clang {
20 
21 /// The default, if any, capture method for a lambda expression.
22 enum LambdaCaptureDefault {
23   LCD_None,
24   LCD_ByCopy,
25   LCD_ByRef
26 };
27 
28 /// The different capture forms in a lambda introducer
29 ///
30 /// C++11 allows capture of \c this, or of local variables by copy or
31 /// by reference.  C++1y also allows "init-capture", where the initializer
32 /// is an expression.
33 enum LambdaCaptureKind {
34   LCK_This,   ///< Capturing the \c *this object by reference
35   LCK_StarThis, ///< Capturing the \c *this object by copy
36   LCK_ByCopy, ///< Capturing by copy (a.k.a., by value)
37   LCK_ByRef,  ///< Capturing by reference
38   LCK_VLAType ///< Capturing variable-length array type
39 };
40 
41 } // end namespace clang
42 
43 #endif // LLVM_CLANG_BASIC_LAMBDA_H
44