A C++ lambda expression, which produces a function object (of unspecified type) that can be invoked later. More...
#include <ExprCXX.h>
Classes | |
| class | Capture |
| Describes the capture of either a variable or 'this'. More... | |
Public Types | |
| typedef const Capture * | capture_iterator |
| An iterator that walks over the captures of the lambda, both implicit and explicit. | |
| typedef Expr ** | capture_init_iterator |
| Iterator that walks over the capture initialization arguments. | |
Public Member Functions | |
| LambdaCaptureDefault | getCaptureDefault () const |
| Determine the default capture kind for this lambda. | |
| capture_iterator | capture_begin () const |
| Retrieve an iterator pointing to the first lambda capture. | |
| capture_iterator | capture_end () const |
| Retrieve an iterator pointing past the end of the sequence of lambda captures. | |
| unsigned | capture_size () const |
| Determine the number of captures in this lambda. | |
| capture_iterator | explicit_capture_begin () const |
| Retrieve an iterator pointing to the first explicit lambda capture. | |
| capture_iterator | explicit_capture_end () const |
| Retrieve an iterator pointing past the end of the sequence of explicit lambda captures. | |
| capture_iterator | implicit_capture_begin () const |
| Retrieve an iterator pointing to the first implicit lambda capture. | |
| capture_iterator | implicit_capture_end () const |
| Retrieve an iterator pointing past the end of the sequence of implicit lambda captures. | |
| capture_init_iterator | capture_init_begin () const |
| Retrieve the first initialization argument for this lambda expression (which initializes the first capture field). | |
| capture_init_iterator | capture_init_end () const |
| Retrieve the iterator pointing one past the last initialization argument for this lambda expression. | |
| ArrayRef< VarDecl * > | getCaptureInitIndexVars (capture_init_iterator Iter) const |
| Retrieve the set of index variables used in the capture initializer of an array captured by copy. | |
| SourceRange | getIntroducerRange () const |
| Retrieve the source range covering the lambda introducer, which contains the explicit capture list surrounded by square brackets ([...]). | |
| CXXRecordDecl * | getLambdaClass () const |
| Retrieve the class that corresponds to the lambda, which stores the captures in its fields and provides the various operations permitted on a lambda (copying, calling). | |
| CXXMethodDecl * | getCallOperator () const |
| Retrieve the function call operator associated with this lambda expression. | |
| CompoundStmt * | getBody () const |
| Retrieve the body of the lambda. | |
| bool | isMutable () const |
| Determine whether the lambda is mutable, meaning that any captures values can be modified. | |
| bool | hasExplicitParameters () const |
| Determine whether this lambda has an explicit parameter list vs. an implicit (empty) parameter list. | |
| bool | hasExplicitResultType () const |
| Whether this lambda had its result type explicitly specified. | |
| SourceRange | getSourceRange () const LLVM_READONLY |
| child_range | children () |
Static Public Member Functions | |
| static LambdaExpr * | Create (ASTContext &C, CXXRecordDecl *Class, SourceRange IntroducerRange, LambdaCaptureDefault CaptureDefault, ArrayRef< Capture > Captures, bool ExplicitParams, bool ExplicitResultType, ArrayRef< Expr * > CaptureInits, ArrayRef< VarDecl * > ArrayIndexVars, ArrayRef< unsigned > ArrayIndexStarts, SourceLocation ClosingBrace) |
| Construct a new lambda expression. | |
| static LambdaExpr * | CreateDeserialized (ASTContext &C, unsigned NumCaptures, unsigned NumArrayIndexVars) |
| Construct a new lambda expression that will be deserialized from an external source. | |
| static bool | classof (const Stmt *T) |
| static bool | classof (const LambdaExpr *) |
Friends | |
| class | ASTStmtReader |
| class | ASTStmtWriter |
Detailed Description
A C++ lambda expression, which produces a function object (of unspecified type) that can be invoked later.
Example:
void low_pass_filter(std::vector<double> &values, double cutoff) { values.erase(std::remove_if(values.begin(), values.end(), [=](double value) { return value > cutoff; }); }
Lambda expressions can capture local variables, either by copying the values of those local variables at the time the function object is constructed (not when it is called!) or by holding a reference to the local variable. These captures can occur either implicitly or can be written explicitly between the square brackets ([...]) that start the lambda expression.
Member Typedef Documentation
| typedef Expr** clang::LambdaExpr::capture_init_iterator |
| typedef const Capture* clang::LambdaExpr::capture_iterator |
Member Function Documentation
| LambdaExpr::capture_iterator LambdaExpr::capture_begin | ( | ) | const |
Retrieve an iterator pointing to the first lambda capture.
Definition at line 882 of file ExprCXX.cpp.
References getLambdaClass().
Referenced by capture_end(), and explicit_capture_begin().
| LambdaExpr::capture_iterator LambdaExpr::capture_end | ( | ) | const |
Retrieve an iterator pointing past the end of the sequence of lambda captures.
Definition at line 886 of file ExprCXX.cpp.
References capture_begin().
Referenced by implicit_capture_end().
| capture_init_iterator clang::LambdaExpr::capture_init_begin | ( | ) | const [inline] |
Retrieve the first initialization argument for this lambda expression (which initializes the first capture field).
Definition at line 1337 of file ExprCXX.h.
Referenced by clang::Sema::canThrow(), capture_init_end(), clang::CodeGen::CodeGenFunction::EmitLambdaExpr(), getCaptureInitIndexVars(), and clang::Sema::PopExpressionEvaluationContext().
| capture_init_iterator clang::LambdaExpr::capture_init_end | ( | ) | const [inline] |
Retrieve the iterator pointing one past the last initialization argument for this lambda expression.
Definition at line 1343 of file ExprCXX.h.
References capture_init_begin().
Referenced by clang::Sema::canThrow(), clang::CodeGen::CodeGenFunction::EmitLambdaExpr(), and clang::Sema::PopExpressionEvaluationContext().
| unsigned clang::LambdaExpr::capture_size | ( | ) | const [inline] |
| child_range clang::LambdaExpr::children | ( | ) | [inline] |
Reimplemented from clang::Stmt.
| static bool clang::LambdaExpr::classof | ( | const Stmt * | T | ) | [inline, static] |
Reimplemented from clang::Expr.
Definition at line 1382 of file ExprCXX.h.
References clang::Stmt::getStmtClass().
| static bool clang::LambdaExpr::classof | ( | const LambdaExpr * | ) | [inline, static] |
| LambdaExpr * LambdaExpr::Create | ( | ASTContext & | C, |
| CXXRecordDecl * | Class, | ||
| SourceRange | IntroducerRange, | ||
| LambdaCaptureDefault | CaptureDefault, | ||
| ArrayRef< Capture > | Captures, | ||
| bool | ExplicitParams, | ||
| bool | ExplicitResultType, | ||
| ArrayRef< Expr * > | CaptureInits, | ||
| ArrayRef< VarDecl * > | ArrayIndexVars, | ||
| ArrayRef< unsigned > | ArrayIndexStarts, | ||
| SourceLocation | ClosingBrace | ||
| ) | [static] |
Construct a new lambda expression.
Definition at line 846 of file ExprCXX.cpp.
References clang::ASTContext::Allocate(), and clang::ASTContext::getTypeDeclType().
Referenced by clang::Sema::ActOnLambdaExpr().
| LambdaExpr * LambdaExpr::CreateDeserialized | ( | ASTContext & | C, |
| unsigned | NumCaptures, | ||
| unsigned | NumArrayIndexVars | ||
| ) | [static] |
Construct a new lambda expression that will be deserialized from an external source.
Definition at line 872 of file ExprCXX.cpp.
References clang::ASTContext::Allocate().
| LambdaExpr::capture_iterator LambdaExpr::explicit_capture_begin | ( | ) | const |
Retrieve an iterator pointing to the first explicit lambda capture.
Definition at line 890 of file ExprCXX.cpp.
References capture_begin().
| LambdaExpr::capture_iterator LambdaExpr::explicit_capture_end | ( | ) | const |
Retrieve an iterator pointing past the end of the sequence of explicit lambda captures.
Definition at line 894 of file ExprCXX.cpp.
References getLambdaClass().
Referenced by implicit_capture_begin().
| CompoundStmt * LambdaExpr::getBody | ( | ) | const |
Retrieve the body of the lambda.
Definition at line 936 of file ExprCXX.cpp.
References clang::FunctionDecl::getBody(), and getCallOperator().
| CXXMethodDecl * LambdaExpr::getCallOperator | ( | ) | const |
Retrieve the function call operator associated with this lambda expression.
Definition at line 925 of file ExprCXX.cpp.
References clang::ASTContext::DeclarationNames, clang::Decl::getASTContext(), clang::DeclarationNameTable::getCXXOperatorName(), getLambdaClass(), and clang::DeclContext::lookup().
Referenced by getBody(), and isMutable().
| LambdaCaptureDefault clang::LambdaExpr::getCaptureDefault | ( | ) | const [inline] |
| ArrayRef< VarDecl * > LambdaExpr::getCaptureInitIndexVars | ( | capture_init_iterator | Iter | ) | const |
Retrieve the set of index variables used in the capture initializer of an array captured by copy.
- Parameters:
-
Iter The iterator that points at the capture initializer for which we are extracting the corresponding index variables.
Definition at line 909 of file ExprCXX.cpp.
References capture_init_begin(), getLambdaClass(), and Index.
Referenced by clang::CodeGen::CodeGenFunction::EmitLambdaExpr().
| SourceRange clang::LambdaExpr::getIntroducerRange | ( | ) | const [inline] |
| CXXRecordDecl * LambdaExpr::getLambdaClass | ( | ) | const |
Retrieve the class that corresponds to the lambda, which stores the captures in its fields and provides the various operations permitted on a lambda (copying, calling).
Definition at line 921 of file ExprCXX.cpp.
References clang::Expr::getType().
Referenced by capture_begin(), clang::CodeGen::CodeGenFunction::EmitLambdaExpr(), explicit_capture_end(), getCallOperator(), and getCaptureInitIndexVars().
| SourceRange clang::LambdaExpr::getSourceRange | ( | ) | const [inline] |
SourceLocation tokens are not useful in isolation - they are low level value objects created/interpreted by SourceManager. We assume AST clients will have a pointer to the respective SourceManager.
Reimplemented from clang::Stmt.
Definition at line 1387 of file ExprCXX.h.
References clang::SourceRange::getBegin().
| bool clang::LambdaExpr::hasExplicitParameters | ( | ) | const [inline] |
| bool clang::LambdaExpr::hasExplicitResultType | ( | ) | const [inline] |
| LambdaExpr::capture_iterator LambdaExpr::implicit_capture_begin | ( | ) | const |
Retrieve an iterator pointing to the first implicit lambda capture.
Definition at line 900 of file ExprCXX.cpp.
References explicit_capture_end().
| LambdaExpr::capture_iterator LambdaExpr::implicit_capture_end | ( | ) | const |
Retrieve an iterator pointing past the end of the sequence of implicit lambda captures.
Definition at line 904 of file ExprCXX.cpp.
References capture_end().
| bool LambdaExpr::isMutable | ( | ) | const |
Determine whether the lambda is mutable, meaning that any captures values can be modified.
Definition at line 943 of file ExprCXX.cpp.
References clang::Qualifiers::Const, and getCallOperator().
Friends And Related Function Documentation
friend class ASTStmtReader [friend] |
Reimplemented from clang::Stmt.
friend class ASTStmtWriter [friend] |
Reimplemented from clang::Stmt.
The documentation for this class was generated from the following files: