Merge remote-tracking branch 'me/more-rust-ffi' into no-stringly-typed-derivation-output

src/nix/command.cc

@@ -31,21 +31,21 @@ void StoreCommand::run()
     run(getStore());
 }
 
-StorePathsCommand::StorePathsCommand(FileIngestionMethod recursive)
+StorePathsCommand::StorePathsCommand(bool recursive)
     : recursive(recursive)
 {
-    if (recursive == FileIngestionMethod::Recursive)
+    if (recursive)
         addFlag({
             .longName = "no-recursive",
             .description = "apply operation to specified paths only",
-            .handler = {&this->recursive, FileIngestionMethod::Flat},
+            .handler = {&this->recursive, false},
         });
     else
         addFlag({
             .longName = "recursive",
             .shortName = 'r',
             .description = "apply operation to closure of the specified paths",
-            .handler = {&this->recursive, FileIngestionMethod::Recursive},
+            .handler = {&this->recursive, true},
         });
 
     mkFlag(0, "all", "apply operation to the entire store", &all);
@@ -66,7 +66,7 @@ void StorePathsCommand::run(ref<Store> store)
         for (auto & p : toStorePaths(store, realiseMode, installables))
             storePaths.push_back(p.clone());
 
-        if (recursive == FileIngestionMethod::Recursive) {
+        if (recursive) {
             StorePathSet closure;
             store->computeFSClosure(storePathsToSet(storePaths), closure, false, false);
             storePaths.clear();

src/nix/command.hh

@@ -92,7 +92,7 @@ struct StorePathsCommand : public InstallablesCommand
 {
 private:
 
-    FileIngestionMethod recursive = FileIngestionMethod::Flat;
+    bool recursive = false;
     bool all = false;
 
 protected:
@@ -101,7 +101,7 @@ protected:
 
 public:
 
-    StorePathsCommand(FileIngestionMethod recursive = FileIngestionMethod::Flat);
+    StorePathsCommand(bool recursive = false);
 
     using StoreCommand::run;
 

src/nix/copy.cc

@@ -17,7 +17,7 @@ struct CmdCopy : StorePathsCommand
     SubstituteFlag substitute = NoSubstitute;
 
     CmdCopy()
-        : StorePathsCommand(FileIngestionMethod::Recursive)
+        : StorePathsCommand(true)
     {
         addFlag({
             .longName = "from",

src/nix/hash.cc

@@ -9,15 +9,14 @@ using namespace nix;
 
 struct CmdHash : Command
 {
-    enum Mode { mFile, mPath };
-    Mode mode;
+    FileIngestionMethod mode;
     Base base = SRI;
     bool truncate = false;
     HashType ht = htSHA256;
     std::vector<std::string> paths;
     std::optional<std::string> modulus;
 
-    CmdHash(Mode mode) : mode(mode)
+    CmdHash(FileIngestionMethod mode) : mode(mode)
     {
         mkFlag(0, "sri", "print hash in SRI format", &base, SRI);
         mkFlag(0, "base64", "print hash in base-64", &base, Base64);
@@ -36,9 +35,14 @@ struct CmdHash : Command
 
     std::string description() override
     {
-        return mode == mFile
-            ? "print cryptographic hash of a regular file"
-            : "print cryptographic hash of the NAR serialisation of a path";
+        const char* d;
+        switch (mode) {
+        case FileIngestionMethod::Flat:
+            d = "print cryptographic hash of a regular file";
+        case FileIngestionMethod::Recursive:
+            d = "print cryptographic hash of the NAR serialisation of a path";
+        };
+        return d;
     }
 
     Category category() override { return catUtility; }
@@ -53,10 +57,14 @@ struct CmdHash : Command
             else
                 hashSink = std::make_unique<HashSink>(ht);
 
-            if (mode == mFile)
+            switch (mode) {
+            case FileIngestionMethod::Flat:
                 readFile(path, *hashSink);
-            else
+                break;
+            case FileIngestionMethod::Recursive:
                 dumpPath(path, *hashSink);
+                break;
+            }
 
             Hash h = hashSink->finish().first;
             if (truncate && h.hashSize > 20) h = compressHash(h, 20);
@@ -65,8 +73,8 @@ struct CmdHash : Command
     }
 };
 
-static RegisterCommand r1("hash-file", [](){ return make_ref<CmdHash>(CmdHash::mFile); });
-static RegisterCommand r2("hash-path", [](){ return make_ref<CmdHash>(CmdHash::mPath); });
+static RegisterCommand r1("hash-file", [](){ return make_ref<CmdHash>(FileIngestionMethod::Flat); });
+static RegisterCommand r2("hash-path", [](){ return make_ref<CmdHash>(FileIngestionMethod::Recursive); });
 
 struct CmdToBase : Command
 {
@@ -137,7 +145,7 @@ static int compatNixHash(int argc, char * * argv)
     });
 
     if (op == opHash) {
-        CmdHash cmd(flat ? CmdHash::mFile : CmdHash::mPath);
+        CmdHash cmd(flat ? FileIngestionMethod::Flat : FileIngestionMethod::Recursive);
         cmd.ht = ht;
         cmd.base = base32 ? Base32 : Base16;
         cmd.truncate = truncate;