clang::PreferredTypeBuilder Class Reference

Tracks expected type during expression parsing, for use in code completion. More...

#include "clang/Sema/Sema.h"

Public Member Functions
	PreferredTypeBuilder (ASTContext *Ctx, bool Enabled)
void	enterCondition (Sema &S, SourceLocation Tok)
void	enterReturn (Sema &S, SourceLocation Tok)
void	enterVariableInit (SourceLocation Tok, Decl *D)
void	enterDesignatedInitializer (SourceLocation Tok, QualType BaseType, const Designation &D)
	Handles e.g. BaseType{ .D = Tok...
void	enterFunctionArgument (SourceLocation Tok, llvm::function_ref< QualType()> ComputeType)
	Computing a type for the function argument may require running overloading, so we postpone its computation until it is actually needed.
void	enterParenExpr (SourceLocation Tok, SourceLocation LParLoc)
void	enterUnary (Sema &S, SourceLocation Tok, tok::TokenKind OpKind, SourceLocation OpLoc)
void	enterBinary (Sema &S, SourceLocation Tok, Expr *LHS, tok::TokenKind Op)
void	enterMemAccess (Sema &S, SourceLocation Tok, Expr *Base)
void	enterSubscript (Sema &S, SourceLocation Tok, Expr *LHS)
void	enterTypeCast (SourceLocation Tok, QualType CastType)
	Handles all type casts, including C-style cast, C++ casts, etc.
QualType	get (SourceLocation Tok) const
	Get the expected type associated with this location, if any.

Detailed Description

Tracks expected type during expression parsing, for use in code completion.

The type is tied to a particular token, all functions that update or consume the type take a start location of the token they are looking at as a parameter. This avoids updating the type on hot paths in the parser.

Definition at line 289 of file Sema.h.

Constructor & Destructor Documentation

PreferredTypeBuilder()

clang::PreferredTypeBuilder::PreferredTypeBuilder ( ASTContext * Ctx, bool Enabled )

inline

Definition at line 291 of file Sema.h.

Member Function Documentation

enterBinary()

void PreferredTypeBuilder::enterBinary	(	Sema &	S,
		SourceLocation	Tok,
		Expr *	LHS,
		tok::TokenKind	Op )

Definition at line 588 of file SemaCodeComplete.cpp.

References getPreferredTypeOfBinaryRHS(), and Tok.

enterCondition()

void PreferredTypeBuilder::enterCondition	(	Sema &	S,
		SourceLocation	Tok )

Definition at line 636 of file SemaCodeComplete.cpp.

References clang::ASTContext::BoolTy, clang::Sema::getASTContext(), and Tok.

enterDesignatedInitializer()

void PreferredTypeBuilder::enterDesignatedInitializer	(	SourceLocation	Tok,
		QualType	BaseType,
		const Designation &	D )

Handles e.g. BaseType{ .D = Tok...

Definition at line 450 of file SemaCodeComplete.cpp.

References getDesignatedType(), and Tok.

enterFunctionArgument()

void PreferredTypeBuilder::enterFunctionArgument	(	SourceLocation	Tok,
		llvm::function_ref< QualType()>	ComputeType )

Computing a type for the function argument may require running overloading, so we postpone its computation until it is actually needed.

Clients should be very careful when using this function, as it stores a function_ref, clients should make sure all calls to get() with the same location happen while function_ref is alive.

The callback should also emit signature help as a side-effect, but only if the completion point has been reached.

Definition at line 461 of file SemaCodeComplete.cpp.

References Tok.

enterMemAccess()

void PreferredTypeBuilder::enterMemAccess	(	Sema &	S,
		SourceLocation	Tok,
		Expr *	Base )

Definition at line 597 of file SemaCodeComplete.cpp.

References Tok.

enterParenExpr()

void PreferredTypeBuilder::enterParenExpr	(	SourceLocation	Tok,
		SourceLocation	LParLoc )

Definition at line 470 of file SemaCodeComplete.cpp.

References Tok.

enterReturn()

void PreferredTypeBuilder::enterReturn	(	Sema &	S,
		SourceLocation	Tok )

Definition at line 418 of file SemaCodeComplete.cpp.

References clang::Sema::CurContext, clang::Function, clang::Sema::getCurBlock(), clang::isa(), clang::Method, and Tok.

enterSubscript()

void PreferredTypeBuilder::enterSubscript	(	Sema &	S,
		SourceLocation	Tok,
		Expr *	LHS )

Definition at line 618 of file SemaCodeComplete.cpp.

References clang::Sema::getASTContext(), clang::ASTContext::IntTy, and Tok.

enterTypeCast()

void PreferredTypeBuilder::enterTypeCast	(	SourceLocation	Tok,
		QualType	CastType )

Handles all type casts, including C-style cast, C++ casts, etc.

Definition at line 627 of file SemaCodeComplete.cpp.

References Tok.

enterUnary()

void PreferredTypeBuilder::enterUnary	(	Sema &	S,
		SourceLocation	Tok,
		tok::TokenKind	OpKind,
		SourceLocation	OpLoc )

Definition at line 608 of file SemaCodeComplete.cpp.

References get(), getPreferredTypeOfUnaryArg(), and Tok.

enterVariableInit()

void PreferredTypeBuilder::enterVariableInit	(	SourceLocation	Tok,
		Decl *	D )

Definition at line 438 of file SemaCodeComplete.cpp.

References Tok.

get()

QualType clang::PreferredTypeBuilder::get ( SourceLocation Tok ) const

inline

Get the expected type associated with this location, if any.

If the location is a function argument, determining the expected type involves considering all function overloads and the arguments so far. In this case, signature help for these function overloads will be reported as a side-effect (only if the completion point has been reached).

Definition at line 327 of file Sema.h.

References Tok.

Referenced by enterUnary().

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

• include/clang/Sema/Sema.h
• lib/Sema/SemaCodeComplete.cpp