Trigram.h File Reference

Trigrams are attributes of the symbol unqualified name used to effectively extract symbols which can be fuzzy-matched given user query from the inverted index. More...

#include "index/dex/Token.h"
#include "llvm/ADT/bit.h"
#include <array>
#include <string>

Go to the source code of this file.

Classes
class	clang::clangd::dex::Trigram
struct	llvm::DenseMapInfo< clang::clangd::dex::Trigram >

Namespaces
namespace	clang
	===– Representation.cpp - ClangDoc Representation --------—*- C++ -*-===//
namespace	clang::clangd
	FIXME: Skip testing on windows temporarily due to the different escaping code mode.
namespace	clang::clangd::dex
namespace	llvm
	Some operations such as code completion produce a set of candidates.

Functions
void	clang::clangd::dex::generateIdentifierTrigrams (llvm::StringRef Identifier, std::vector< Trigram > &Out)
	Produces list of unique fuzzy-search trigrams from unqualified symbol.
std::vector< Token >	clang::clangd::dex::generateQueryTrigrams (llvm::StringRef Query)
	Returns list of unique fuzzy-search trigrams given a query.

Detailed Description

Trigrams are attributes of the symbol unqualified name used to effectively extract symbols which can be fuzzy-matched given user query from the inverted index.

To match query with the extracted set of trigrams Q, the set of generated trigrams T for identifier (unqualified symbol name) should contain all items of Q, i.e. Q ⊆ T.

Trigram sets extracted from unqualified name and from query are different: the set of query trigrams only contains consecutive sequences of three characters (which is only a subset of all trigrams generated for an identifier).

Definition in file Trigram.h.