ccls/src/utils.hh

91 lines
2.8 KiB
C++

// Copyright 2017-2018 ccls Authors
// SPDX-License-Identifier: Apache-2.0
#pragma once
#include <optional>
#include <string_view>
#include <iterator>
#include <memory>
#include <string>
#include <vector>
namespace llvm {
class StringRef;
}
namespace ccls {
struct Matcher {
struct Impl;
std::unique_ptr<Impl> impl;
std::string pattern;
Matcher(const std::string &pattern); // throw
Matcher(Matcher&&) = default;
~Matcher();
bool Matches(const std::string &text) const;
};
struct GroupMatch {
std::vector<Matcher> whitelist, blacklist;
GroupMatch(const std::vector<std::string> &whitelist,
const std::vector<std::string> &blacklist);
bool Matches(const std::string &text,
std::string *blacklist_pattern = nullptr) const;
};
uint64_t HashUsr(llvm::StringRef s);
std::string LowerPathIfInsensitive(const std::string &path);
// Ensures that |path| ends in a slash.
void EnsureEndsInSlash(std::string &path);
// Converts a file path to one that can be used as filename.
// e.g. foo/bar.c => foo_bar.c
std::string EscapeFileName(std::string path);
std::string ResolveIfRelative(const std::string &directory,
const std::string &path);
std::optional<int64_t> LastWriteTime(const std::string &path);
std::optional<std::string> ReadContent(const std::string &filename);
void WriteToFile(const std::string &filename, const std::string &content);
int ReverseSubseqMatch(std::string_view pat, std::string_view text,
int case_sensitivity);
// http://stackoverflow.com/a/38140932
//
// struct SomeHashKey {
// std::string key1;
// std::string key2;
// bool key3;
// };
// MAKE_HASHABLE(SomeHashKey, t.key1, t.key2, t.key3)
inline void hash_combine(std::size_t &seed) {}
template <typename T, typename... Rest>
inline void hash_combine(std::size_t &seed, const T &v, Rest... rest) {
std::hash<T> hasher;
seed ^= hasher(v) + 0x9e3779b9 + (seed << 6) + (seed >> 2);
hash_combine(seed, rest...);
}
#define MAKE_HASHABLE(type, ...) \
namespace std { \
template <> struct hash<type> { \
std::size_t operator()(const type &t) const { \
std::size_t ret = 0; \
ccls::hash_combine(ret, __VA_ARGS__); \
return ret; \
} \
}; \
}
std::string GetDefaultResourceDirectory();
} // namespace ccls