clang::FunctionType::ExtParameterInfo Class Reference

Interesting information about a specific parameter that can't simply be reflected in parameter's type. More...

#include "clang/AST/Type.h"

Public Member Functions
	ExtParameterInfo ()=default
ParameterABI	getABI () const
	Return the ABI treatment of this parameter.
ExtParameterInfo	withABI (ParameterABI kind) const
bool	isConsumed () const
	Is this parameter considered "consumed" by Objective-C ARC? Consumed parameters must have retainable object type.
ExtParameterInfo	withIsConsumed (bool consumed) const
bool	hasPassObjectSize () const
ExtParameterInfo	withHasPassObjectSize () const
bool	isNoEscape () const
ExtParameterInfo	withIsNoEscape (bool NoEscape) const
unsigned char	getOpaqueValue () const

Static Public Member Functions
static ExtParameterInfo	getFromOpaqueValue (unsigned char data)

Friends
bool	operator== (ExtParameterInfo lhs, ExtParameterInfo rhs)
bool	operator!= (ExtParameterInfo lhs, ExtParameterInfo rhs)

Detailed Description

Interesting information about a specific parameter that can't simply be reflected in parameter's type.

This is only used by FunctionProtoType but is in FunctionType to make this class available during the specification of the bases of FunctionProtoType.

It makes sense to model language features this way when there's some sort of parameter-specific override (such as an attribute) that affects how the function is called. For example, the ARC ns_consumed attribute changes whether a parameter is passed at +0 (the default) or +1 (ns_consumed). This must be reflected in the function type, but isn't really a change to the parameter type.

One serious disadvantage of modelling language features this way is that they generally do not work with language features that attempt to destructure types. For example, template argument deduction will not be able to match a parameter declared as T (*)(U) against an argument of type void (*)(attribute((ns_consumed)) id) because the substitution of T=void, U=id into the former will not produce the latter.

Definition at line 4334 of file Type.h.

Constructor & Destructor Documentation

ExtParameterInfo()

clang::FunctionType::ExtParameterInfo::ExtParameterInfo ( )

default

Member Function Documentation

getABI()

ParameterABI clang::FunctionType::ExtParameterInfo::getABI ( ) const

inline

Return the ABI treatment of this parameter.

Definition at line 4347 of file Type.h.

References Data.

Referenced by checkExtParameterInfos(), and clang::CodeGen::CodeGenModule::ConstructAttributeList().

getFromOpaqueValue()

static ExtParameterInfo clang::FunctionType::ExtParameterInfo::getFromOpaqueValue ( unsigned char  data )

inlinestatic

Definition at line 4384 of file Type.h.

getOpaqueValue()

unsigned char clang::FunctionType::ExtParameterInfo::getOpaqueValue ( ) const

inline

Definition at line 4383 of file Type.h.

References Data.

Referenced by clang::serialization::DataStreamBasicReader< Impl >::readExtParameterInfo(), and clang::serialization::DataStreamBasicWriter< Impl >::writeExtParameterInfo().

hasPassObjectSize()

bool clang::FunctionType::ExtParameterInfo::hasPassObjectSize ( ) const

inline

Definition at line 4366 of file Type.h.

References Data.

isConsumed()

bool clang::FunctionType::ExtParameterInfo::isConsumed ( ) const

inline

Is this parameter considered "consumed" by Objective-C ARC? Consumed parameters must have retainable object type.

Definition at line 4356 of file Type.h.

References Data.

isNoEscape()

bool clang::FunctionType::ExtParameterInfo::isNoEscape ( ) const

inline

Definition at line 4373 of file Type.h.

References Data.

Referenced by clang::Sema::CheckOverridingFunctionAttributes(), clang::CodeGen::CodeGenModule::ConstructAttributeList(), clang::Sema::GatherArgumentsForCall(), and clang::ASTContext::mergeExtParameterInfo().

withABI()

ExtParameterInfo clang::FunctionType::ExtParameterInfo::withABI ( ParameterABI  kind ) const

inline

Definition at line 4348 of file Type.h.

withHasPassObjectSize()

ExtParameterInfo clang::FunctionType::ExtParameterInfo::withHasPassObjectSize ( ) const

inline

Definition at line 4367 of file Type.h.

References clang::Copy.

withIsConsumed()

ExtParameterInfo clang::FunctionType::ExtParameterInfo::withIsConsumed ( bool  consumed ) const

inline

Definition at line 4357 of file Type.h.

withIsNoEscape()

ExtParameterInfo clang::FunctionType::ExtParameterInfo::withIsNoEscape ( bool  NoEscape ) const

inline

Definition at line 4374 of file Type.h.

References clang::Copy.

Referenced by clang::CodeGen::CodeGenTypes::arrangeObjCMessageSendSignature(), and clang::ASTContext::mergeExtParameterInfo().

Friends And Related Function Documentation

operator!=

bool operator!= ( ExtParameterInfo  lhs, ExtParameterInfo  rhs  )

friend

Definition at line 4394 of file Type.h.

operator==

bool operator== ( ExtParameterInfo  lhs, ExtParameterInfo  rhs  )

friend

Definition at line 4390 of file Type.h.

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The documentation for this class was generated from the following file:

• include/clang/AST/Type.h