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Do constant time matching for exact match filters.

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This commit is contained in:
Hossein Ghahramanzadeh 2022-01-29 08:05:03 +01:00
parent 28e1da21d8
commit 2eadda6e00
1 changed files with 16 additions and 3 deletions
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19
googletest/src/gtest.cc
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@ -50,6 +50,7 @@
#include <map>
#include <ostream> // NOLINT
#include <sstream>
#include <unordered_set>
#include <vector>
#include "gtest/gtest-assertion-result.h"
@ -725,6 +726,11 @@ static bool PatternMatchesString(const std::string& name_str,
return true;
}
static bool IsGlobPattern(const std::string& pattern) {
return std::any_of(pattern.begin(), pattern.end(),
[](const char c) { return c == '?' || c == '*'; });
}
namespace {
class UnitTestFilter {
@ -734,13 +740,19 @@ class UnitTestFilter {
// Constructs a filter from a string of patterns separated by `:`.
explicit UnitTestFilter(const std::string& filter) {
// By design "" filter matches "" string.
SplitString(filter, ':', &patterns_);
SplitString(filter, ':', &glob_patterns_);
const auto exact_match_pattern_begin = std::partition(
glob_patterns_.begin(), glob_patterns_.end(), &IsGlobPattern);
exact_match_patterns_.insert(exact_match_pattern_begin,
glob_patterns_.end());
glob_patterns_.erase(exact_match_pattern_begin, glob_patterns_.end());
}
// Returns true if and only if name matches at least one of the patterns in
// the filter.
bool MatchesName(const std::string& name) const {
return std::any_of(patterns_.begin(), patterns_.end(),
return exact_match_patterns_.count(name) ||
std::any_of(glob_patterns_.begin(), glob_patterns_.end(),
[&name](const std::string& pattern) {
return PatternMatchesString(
name, pattern.c_str(),
@ -749,7 +761,8 @@ class UnitTestFilter {
}
private:
std::vector<std::string> patterns_;
std::vector<std::string> glob_patterns_;
std::unordered_set<std::string> exact_match_patterns_;
};
class PositiveAndNegativeUnitTestFilter {