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Don't use std::mismatch. Unit tests crash on Windows.

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This commit is contained in:
Jacob Dufault 2018-03-19 17:25:00 -07:00 committed by Fangrui Song
parent 997bcdf05a
commit 259d30ef8a
1 changed files with 29 additions and 7 deletions
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36
src/project.cc
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@ -504,15 +504,37 @@ std::vector<Project::Entry> LoadCompilationEntriesFromDirectory(
// Computes a score based on how well |a| and |b| match. This is used for
// argument guessing.
int ComputeGuessScore(const std::string& a, const std::string& b) {
// Increase score based on common prefix and suffix. Prefixes are prioritized.
size_t i = std::mismatch(a.begin(), a.end(), b.begin()).first - a.begin();
size_t j = std::mismatch(a.rbegin(), a.rend(), b.rbegin()).first - a.rbegin();
int score = 10 * i + j;
const int kMatchPrefixWeight = 100;
const int kMismatchDirectoryWeight = 100;
const int kMatchPostfixWeight = 1;
int score = 0;
size_t i = 0;
// Increase score based on matching prefix.
for (i = 0; i < a.size() && i < b.size(); ++i) {
if (a[i] != b[i])
break;
score += kMatchPrefixWeight;
}
// Reduce score based on mismatched directory distance.
if (i + j < std::min(a.size(), b.size()))
score -= 100 * (std::count(a.begin() + i, a.end() - j, '/') +
std::count(b.begin() + i, b.end() - j, '/'));
for (size_t j = i; j < a.size(); ++j) {
if (a[j] == '/')
score -= kMismatchDirectoryWeight;
}
for (size_t j = i; j < b.size(); ++j) {
if (b[j] == '/')
score -= kMismatchDirectoryWeight;
}
// Increase score based on common ending. Don't increase as much as matching
// prefix or directory distance.
for (size_t offset = 1; offset <= a.size() && offset <= b.size(); ++offset) {
if (a[a.size() - offset] != b[b.size() - offset])
break;
score += kMatchPostfixWeight;
}
return score;
}