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389104d200
issue: #41435 this is to prevent AI from thinking of our exception throwing as a dangerous PANIC operation that terminates the program. Signed-off-by: Buqian Zheng <zhengbuqian@gmail.com>
77 lines
2.1 KiB
C++
77 lines
2.1 KiB
C++
// Copyright (C) 2019-2020 Zilliz. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software distributed under the License
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// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
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// or implied. See the License for the specific language governing permissions and limitations under the License
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#pragma once
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#include <string>
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#include <regex>
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#include <boost/regex.hpp>
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#include <utility>
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#include "common/EasyAssert.h"
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namespace milvus {
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bool
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is_special(char c);
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std::string
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translate_pattern_match_to_regex(const std::string& pattern);
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struct PatternMatchTranslator {
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template <typename T>
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inline std::string
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operator()(const T& pattern) {
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ThrowInfo(OpTypeInvalid,
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"pattern matching is only supported on string type");
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}
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};
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template <>
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inline std::string
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PatternMatchTranslator::operator()<std::string>(const std::string& pattern) {
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return translate_pattern_match_to_regex(pattern);
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}
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struct RegexMatcher {
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template <typename T>
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inline bool
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operator()(const T& operand) {
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return false;
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}
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explicit RegexMatcher(const std::string& pattern) {
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r_ = boost::regex(pattern);
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}
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private:
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// avoid to construct the regex everytime.
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boost::regex r_;
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};
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template <>
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inline bool
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RegexMatcher::operator()(const std::string& operand) {
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// corner case:
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// . don't match \n, but .* match \n.
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// For example,
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// boost::regex_match("Hello\n", boost::regex("Hello.")) returns false
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// but
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// boost::regex_match("Hello\n", boost::regex("Hello.*")) returns true
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return boost::regex_match(operand, r_);
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}
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template <>
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inline bool
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RegexMatcher::operator()(const std::string_view& operand) {
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return boost::regex_match(operand.begin(), operand.end(), r_);
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}
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} // namespace milvus
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