clang::interp::Context Class Reference

Holds all information required to evaluate constexpr code in a module. More...

#include "/opt/doxygen-docs/src/clang/lib/AST/Interp/Context.h"

Public Member Functions
	Context (ASTContext &Ctx)
	Initialises the constexpr VM. More...
	~Context ()
	Cleans up the constexpr VM. More...
bool	isPotentialConstantExpr (State &Parent, const FunctionDecl *FnDecl)
	Checks if a function is a potential constant expression. More...
bool	evaluateAsRValue (State &Parent, const Expr *E, APValue &Result)
	Evaluates a toplevel expression as an rvalue. More...
bool	evaluateAsInitializer (State &Parent, const VarDecl *VD, APValue &Result)
	Evaluates a toplevel initializer. More...
ASTContext &	getASTContext () const
	Returns the AST context. More...
const LangOptions &	getLangOpts () const
	Returns the language options. More...
InterpStack &	getStack ()
	Returns the interpreter stack. More...
unsigned	getCharBit () const
	Returns CHAR_BIT. More...
llvm::Optional< PrimType >	classify (QualType T)
	Classifies an expression. More...

Detailed Description

Holds all information required to evaluate constexpr code in a module.

Definition at line 38 of file Context.h.

Constructor & Destructor Documentation

Context()

Context::Context

(

ASTContext &

Ctx

)

Initialises the constexpr VM.

Definition at line 25 of file Context.cpp.

~Context()

Context::~Context

(

)

Cleans up the constexpr VM.

Definition at line 27 of file Context.cpp.

Member Function Documentation

classify()

llvm::Optional< PrimType > Context::classify

(

QualType

T

)

Classifies an expression.

Definition at line 62 of file Context.cpp.

References clang::ASTContext::getIntWidth(), clang::Type::isBooleanType(), clang::Type::isNullPtrType(), clang::Type::isPointerType(), clang::Type::isReferenceType(), clang::Type::isSignedIntegerOrEnumerationType(), clang::Type::isUnsignedIntegerOrEnumerationType(), clang::interp::PT_Bool, clang::interp::PT_Ptr, clang::interp::PT_Sint16, clang::interp::PT_Sint32, clang::interp::PT_Sint64, clang::interp::PT_Sint8, clang::interp::PT_Uint16, clang::interp::PT_Uint32, clang::interp::PT_Uint64, and clang::interp::PT_Uint8.

Referenced by clang::interp::ByteCodeExprGen< Emitter >::classify(), clang::interp::ByteCodeEmitter::compileFunc(), clang::interp::Program::createDescriptor(), clang::interp::Program::createGlobal(), clang::interp::EvalEmitter::fallthrough(), clang::interp::Program::getOrCreateRecord(), and getStack().

evaluateAsInitializer()

bool Context::evaluateAsInitializer	(	State &	Parent,
		const VarDecl *	VD,
		APValue &	Result
	)

Evaluates a toplevel initializer.

Definition at line 54 of file Context.cpp.

evaluateAsRValue()

bool Context::evaluateAsRValue	(	State &	Parent,
		const Expr *	E,
		APValue &	Result
	)

Evaluates a toplevel expression as an rvalue.

Definition at line 49 of file Context.cpp.

getASTContext()

ASTContext& clang::interp::Context::getASTContext ( ) const

inline

Returns the AST context.

Definition at line 56 of file Context.h.

References getLangOpts().

Referenced by clang::interp::EvalEmitter::fallthrough(), clang::interp::ByteCodeExprGen< Emitter >::getCharBit(), clang::interp::ByteCodeExprGen< Emitter >::getIntWidth(), and clang::interp::Program::getOrCreateDummy().

getCharBit()

unsigned Context::getCharBit

(

)

const

Returns CHAR_BIT.

Definition at line 109 of file Context.cpp.

References clang::TargetInfo::getCharWidth(), clang::ASTContext::getTargetInfo(), and Parent.

Referenced by getStack().

getLangOpts()

const LangOptions & Context::getLangOpts

(

)

const

Returns the language options.

Definition at line 60 of file Context.cpp.

References clang::ASTContext::getLangOpts().

Referenced by getASTContext().

getStack()

InterpStack& clang::interp::Context::getStack ( )

inline

Returns the interpreter stack.

Definition at line 60 of file Context.h.

References classify(), and getCharBit().

isPotentialConstantExpr()

bool Context::isPotentialConstantExpr	(	State &	Parent,
		const FunctionDecl *	FnDecl
	)

Checks if a function is a potential constant expression.

Definition at line 29 of file Context.cpp.

References clang::interp::State::FFDiag(), clang::interp::Function::isConstexpr(), P, and Parent.

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

• lib/AST/Interp/Context.h
• lib/AST/Interp/Context.cpp