forked from OSchip/llvm-project
56 lines
2.0 KiB
C++
56 lines
2.0 KiB
C++
//===--- FuzzySymbolIndex.h - Lookup symbols for autocomplete ---*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_CLANG_TOOLS_EXTRA_INCLUDE_FIXER_FUZZY_SYMBOL_INDEX_H
|
|
#define LLVM_CLANG_TOOLS_EXTRA_INCLUDE_FIXER_FUZZY_SYMBOL_INDEX_H
|
|
|
|
#include "SymbolIndex.h"
|
|
#include "find-all-symbols/SymbolInfo.h"
|
|
#include "llvm/ADT/SmallString.h"
|
|
#include "llvm/ADT/StringRef.h"
|
|
#include "llvm/Support/Error.h"
|
|
#include <string>
|
|
#include <vector>
|
|
|
|
namespace clang {
|
|
namespace include_fixer {
|
|
|
|
// A FuzzySymbolIndex retrieves top-level symbols matching a query string.
|
|
//
|
|
// It refines the contract of SymbolIndex::search to do fuzzy matching:
|
|
// - symbol names are tokenized: "unique ptr", "string ref".
|
|
// - query must match prefixes of symbol tokens: [upt]
|
|
// - if the query has multiple tokens, splits must match: [StR], not [STr].
|
|
// Helpers for tokenization and regex matching are provided.
|
|
//
|
|
// Implementations may choose to truncate results, refuse short queries, etc.
|
|
class FuzzySymbolIndex : public SymbolIndex {
|
|
public:
|
|
// Loads the specified include-fixer database and returns an index serving it.
|
|
static llvm::Expected<std::unique_ptr<FuzzySymbolIndex>>
|
|
createFromYAML(llvm::StringRef File);
|
|
|
|
// Helpers for implementing indexes:
|
|
|
|
// Transforms a symbol name or query into a sequence of tokens.
|
|
// - URLHandlerCallback --> [url, handler, callback]
|
|
// - snake_case11 --> [snake, case, 11]
|
|
// - _WTF$ --> [wtf]
|
|
static std::vector<std::string> tokenize(llvm::StringRef Text);
|
|
|
|
// Transforms query tokens into an unanchored regexp to match symbol tokens.
|
|
// - [fe f] --> /f(\w* )?e\w* f/, matches [fee fie foe].
|
|
static std::string queryRegexp(const std::vector<std::string> &Tokens);
|
|
};
|
|
|
|
} // namespace include_fixer
|
|
} // namespace clang
|
|
|
|
#endif // LLVM_CLANG_TOOLS_EXTRA_INCLUDE_FIXER_FUZZY_SYMBOL_INDEX_H
|