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1 //===--- Lambda.h - Types for C++ Lambdas -----------------------*- C++ -*-===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 ///
10 /// \file
11 /// \brief Defines several types used to describe C++ lambda expressions
12 /// that are shared between the parser and AST.
13 ///
14 //===----------------------------------------------------------------------===//
15 
16 
17 #ifndef LLVM_CLANG_BASIC_LAMBDA_H
18 #define LLVM_CLANG_BASIC_LAMBDA_H
19 
20 namespace clang {
21 
22 /// \brief The default, if any, capture method for a lambda expression.
23 enum LambdaCaptureDefault {
24   LCD_None,
25   LCD_ByCopy,
26   LCD_ByRef
27 };
28 
29 /// \brief The different capture forms in a lambda introducer
30 ///
31 /// C++11 allows capture of \c this, or of local variables by copy or
32 /// by reference.  C++1y also allows "init-capture", where the initializer
33 /// is an expression.
34 enum LambdaCaptureKind {
35   LCK_This,   ///< Capturing the \c *this object by reference
36   LCK_StarThis, /// < Capturing the \c *this object by copy
37   LCK_ByCopy, ///< Capturing by copy (a.k.a., by value)
38   LCK_ByRef,  ///< Capturing by reference
39   LCK_VLAType ///< Capturing variable-length array type
40 };
41 
42 } // end namespace clang
43 
44 #endif // LLVM_CLANG_BASIC_LAMBDA_H
45