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[Dependencies] Sort external file dependencies by more-stable order.

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This commit is contained in:
Graydon Hoare
2017-03-28 16:34:02 -07:00
parent d018521464
commit 57b3947891
5 changed files with 37 additions and 15 deletions
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13
lib/FrontendTool/ReferenceDependencies.cpp
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@@ -102,6 +102,17 @@ static std::string mangleTypeAsContext(const NominalTypeDecl *type) {
return Mangler.mangleTypeAsContextUSR(type);
}
std::vector<std::string>
swift::reversePathSortedFilenames(const ArrayRef<std::string> elts) {
std::vector<std::string> tmp(elts.begin(), elts.end());
std::sort(tmp.begin(), tmp.end(), [](const std::string &a,
const std::string &b) -> bool {
return std::lexicographical_compare(a.rbegin(), a.rend(),
b.rbegin(), b.rend());
});
return tmp;
}
bool swift::emitReferenceDependencies(DiagnosticEngine &diags,
SourceFile *SF,
DependencyTracker &depTracker,
@@ -391,7 +402,7 @@ bool swift::emitReferenceDependencies(DiagnosticEngine &diags,
}
out << "depends-external:\n";
for (auto &entry : depTracker.getDependencies()) {
for (auto &entry : reversePathSortedFilenames(depTracker.getDependencies())) {
out << "- \"" << llvm::yaml::escape(entry) << "\"\n";
}