SERVER-18579: Clang-Format - reformat code, no comment reflow

1 files changed, 260 insertions, 224 deletions

diff --git a/src/mongo/client/dbclientcursor.h b/src/mongo/client/dbclientcursor.h
index 1e110a4d317..c10f4adf8ff 100644
--- a/src/mongo/client/dbclientcursor.h
+++ b/src/mongo/client/dbclientcursor.h
@@ -39,238 +39,274 @@
 
 namespace mongo {
 
-    class AScopedConnection;
+class AScopedConnection;
 
-    /** for mock purposes only -- do not create variants of DBClientCursor, nor hang code here
-        @see DBClientMockCursor
+/** for mock purposes only -- do not create variants of DBClientCursor, nor hang code here
+    @see DBClientMockCursor
+ */
+class DBClientCursorInterface {
+    MONGO_DISALLOW_COPYING(DBClientCursorInterface);
+
+public:
+    virtual ~DBClientCursorInterface() {}
+    virtual bool more() = 0;
+    virtual BSONObj next() = 0;
+    // TODO bring more of the DBClientCursor interface to here
+protected:
+    DBClientCursorInterface() {}
+};
+
+/** Queries return a cursor object */
+class DBClientCursor : public DBClientCursorInterface {
+    MONGO_DISALLOW_COPYING(DBClientCursor);
+
+public:
+    /** If true, safe to call next().  Requests more from server if necessary. */
+    bool more();
+
+    /** If true, there is more in our local buffers to be fetched via next(). Returns
+        false when a getMore request back to server would be required.  You can use this
+        if you want to exhaust whatever data has been fetched to the client already but
+        then perhaps stop.
+    */
+    int objsLeftInBatch() const {
+        _assertIfNull();
+        return _putBack.size() + batch.nReturned - batch.pos;
+    }
+    bool moreInCurrentBatch() {
+        return objsLeftInBatch() > 0;
+    }
+
+    /** next
+       @return next object in the result cursor.
+       on an error at the remote server, you will get back:
+         { $err: <std::string> }
+       if you do not want to handle that yourself, call nextSafe().
+
+       Warning: The returned BSONObj will become invalid after the next batch
+           is fetched or when this cursor is destroyed.
+    */
+    BSONObj next();
+
+    /**
+        restore an object previously returned by next() to the cursor
      */
-    class DBClientCursorInterface {
-        MONGO_DISALLOW_COPYING(DBClientCursorInterface);
-    public:
-        virtual ~DBClientCursorInterface() {}
-        virtual bool more() = 0;
-        virtual BSONObj next() = 0;
-        // TODO bring more of the DBClientCursor interface to here
-    protected:
-        DBClientCursorInterface() {}
-    };
+    void putBack(const BSONObj& o) {
+        _putBack.push(o.getOwned());
+    }
 
-    /** Queries return a cursor object */
-    class DBClientCursor : public DBClientCursorInterface {
-        MONGO_DISALLOW_COPYING(DBClientCursor);
-    public:
-        /** If true, safe to call next().  Requests more from server if necessary. */
-        bool more();
-
-        /** If true, there is more in our local buffers to be fetched via next(). Returns
-            false when a getMore request back to server would be required.  You can use this
-            if you want to exhaust whatever data has been fetched to the client already but
-            then perhaps stop.
-        */
-        int objsLeftInBatch() const { _assertIfNull(); return _putBack.size() + batch.nReturned - batch.pos; }
-        bool moreInCurrentBatch() { return objsLeftInBatch() > 0; }
-
-        /** next
-           @return next object in the result cursor.
-           on an error at the remote server, you will get back:
-             { $err: <std::string> }
-           if you do not want to handle that yourself, call nextSafe().
-
-           Warning: The returned BSONObj will become invalid after the next batch
-               is fetched or when this cursor is destroyed.
-        */
-        BSONObj next();
-
-        /**
-            restore an object previously returned by next() to the cursor
-         */
-        void putBack( const BSONObj &o ) { _putBack.push( o.getOwned() ); }
-
-        /** throws AssertionException if get back { $err : ... } */
-        BSONObj nextSafe();
-
-        /** peek ahead at items buffered for future next() calls.
-            never requests new data from the server.  so peek only effective
-            with what is already buffered.
-            WARNING: no support for _putBack yet!
-        */
-        void peek(std::vector<BSONObj>&, int atMost);
-
-        // Peeks at first element, if exists
-        BSONObj peekFirst();
-
-        /**
-         * peek ahead and see if an error occurred, and get the error if so.
-         */
-        bool peekError(BSONObj* error = NULL);
-
-        /**
-           iterate the rest of the cursor and return the number if items
-         */
-        int itcount() {
-            int c = 0;
-            while ( more() ) {
-                next();
-                c++;
-            }
-            return c;
-        }
+    /** throws AssertionException if get back { $err : ... } */
+    BSONObj nextSafe();
 
-        /** cursor no longer valid -- use with tailable cursors.
-           note you should only rely on this once more() returns false;
-           'dead' may be preset yet some data still queued and locally
-           available from the dbclientcursor.
-        */
-        bool isDead() const { return cursorId == 0; }
-
-        bool tailable() const { return (opts & QueryOption_CursorTailable) != 0; }
-
-        /** see ResultFlagType (constants.h) for flag values
-            mostly these flags are for internal purposes -
-            ResultFlag_ErrSet is the possible exception to that
-        */
-        bool hasResultFlag( int flag ) {
-            _assertIfNull();
-            return (resultFlags & flag) != 0;
-        }
+    /** peek ahead at items buffered for future next() calls.
+        never requests new data from the server.  so peek only effective
+        with what is already buffered.
+        WARNING: no support for _putBack yet!
+    */
+    void peek(std::vector<BSONObj>&, int atMost);
 
-        /// Change batchSize after construction. Can change after requesting first batch.
-        void setBatchSize(int newBatchSize) { batchSize = newBatchSize; }
-
-        DBClientCursor(DBClientBase* client,
-                       const std::string& ns,
-                       const BSONObj& query,
-                       int nToReturn,
-                       int nToSkip,
-                       const BSONObj* fieldsToReturn,
-                       int queryOptions,
-                       int bs);
-
-        DBClientCursor(DBClientBase* client,
-                       const std::string& ns,
-                       long long cursorId,
-                       int nToReturn,
-                       int options );
-
-        virtual ~DBClientCursor();
-
-        long long getCursorId() const { return cursorId; }
-
-        /** by default we "own" the cursor and will send the server a KillCursor
-            message when ~DBClientCursor() is called. This function overrides that.
-        */
-        void decouple() { _ownCursor = false; }
-
-        void attach( AScopedConnection * conn );
-
-        std::string originalHost() const { return _originalHost; }
-
-        std::string getns() const { return ns; }
-
-        Message* getMessage(){ return batch.m.get(); }
-
-        /**
-         * Used mainly to run commands on connections that doesn't support lazy initialization and
-         * does not support commands through the call interface.
-         *
-         * @param cmd The BSON representation of the command to send.
-         *
-         * @return true if command was sent successfully
-         */
-        bool initCommand();
-
-        /**
-         * actually does the query
-         */
-        bool init();
-
-        void initLazy( bool isRetry = false );
-        bool initLazyFinish( bool& retry );
-
-        class Batch {
-            MONGO_DISALLOW_COPYING(Batch);
-            friend class DBClientCursor;
-            std::unique_ptr<Message> m;
-            int nReturned;
-            int pos;
-            const char *data;
-        public:
-            Batch() : m( new Message() ), nReturned(), pos(), data() { }
-        };
-
-        /**
-         * For exhaust. Used in DBClientConnection.
-         */
-        void exhaustReceiveMore();
-
-    private:
-        DBClientCursor(DBClientBase* client,
-                       const std::string& ns,
-                       const BSONObj& query,
-                       long long cursorId,
-                       int nToReturn,
-                       int nToSkip,
-                       const BSONObj* fieldsToReturn,
-                       int queryOptions,
-                       int bs);
-
-        int nextBatchSize();
-
-        Batch batch;
-        DBClientBase* _client;
-        std::string _originalHost;
-        const std::string ns;
-        const bool _isCommand;
-        BSONObj query;
-        int nToReturn;
-        bool haveLimit;
-        int nToSkip;
-        const BSONObj *fieldsToReturn;
-        int opts;
-        int batchSize;
-        std::stack< BSONObj > _putBack;
-        int resultFlags;
-        long long cursorId;
-        bool _ownCursor; // see decouple()
-        std::string _scopedHost;
-        std::string _lazyHost;
-        bool wasError;
-
-        void dataReceived() { bool retry; std::string lazyHost; dataReceived( retry, lazyHost ); }
-        void dataReceived( bool& retry, std::string& lazyHost );
-
-        /**
-         * Called by dataReceived when the query was actually a command. Parses the command reply
-         * according to the RPC protocol used to send it, and then fills in the internal field
-         * of this cursor with the received data.
-         */
-        void commandDataReceived();
-
-        void requestMore();
-
-        // Don't call from a virtual function
-        void _assertIfNull() const { uassert(13348, "connection died", this); }
-
-        // init pieces
-        void _assembleInit( Message& toSend );
-    };
+    // Peeks at first element, if exists
+    BSONObj peekFirst();
 
-    /** iterate over objects in current batch only - will not cause a network call
+    /**
+     * peek ahead and see if an error occurred, and get the error if so.
      */
-    class DBClientCursorBatchIterator {
-    public:
-        DBClientCursorBatchIterator( DBClientCursor &c ) : _c( c ), _n() {}
-        bool moreInCurrentBatch() { return _c.moreInCurrentBatch(); }
-        BSONObj nextSafe() {
-            massert( 13383, "BatchIterator empty", moreInCurrentBatch() );
-            ++_n;
-            return _c.nextSafe();
+    bool peekError(BSONObj* error = NULL);
+
+    /**
+       iterate the rest of the cursor and return the number if items
+     */
+    int itcount() {
+        int c = 0;
+        while (more()) {
+            next();
+            c++;
         }
-        int n() const { return _n; }
-    private:
-        DBClientCursor &_c;
-        int _n;
+        return c;
+    }
+
+    /** cursor no longer valid -- use with tailable cursors.
+       note you should only rely on this once more() returns false;
+       'dead' may be preset yet some data still queued and locally
+       available from the dbclientcursor.
+    */
+    bool isDead() const {
+        return cursorId == 0;
+    }
+
+    bool tailable() const {
+        return (opts & QueryOption_CursorTailable) != 0;
+    }
+
+    /** see ResultFlagType (constants.h) for flag values
+        mostly these flags are for internal purposes -
+        ResultFlag_ErrSet is the possible exception to that
+    */
+    bool hasResultFlag(int flag) {
+        _assertIfNull();
+        return (resultFlags & flag) != 0;
+    }
+
+    /// Change batchSize after construction. Can change after requesting first batch.
+    void setBatchSize(int newBatchSize) {
+        batchSize = newBatchSize;
+    }
+
+    DBClientCursor(DBClientBase* client,
+                   const std::string& ns,
+                   const BSONObj& query,
+                   int nToReturn,
+                   int nToSkip,
+                   const BSONObj* fieldsToReturn,
+                   int queryOptions,
+                   int bs);
+
+    DBClientCursor(DBClientBase* client,
+                   const std::string& ns,
+                   long long cursorId,
+                   int nToReturn,
+                   int options);
+
+    virtual ~DBClientCursor();
+
+    long long getCursorId() const {
+        return cursorId;
+    }
+
+    /** by default we "own" the cursor and will send the server a KillCursor
+        message when ~DBClientCursor() is called. This function overrides that.
+    */
+    void decouple() {
+        _ownCursor = false;
+    }
+
+    void attach(AScopedConnection* conn);
+
+    std::string originalHost() const {
+        return _originalHost;
+    }
+
+    std::string getns() const {
+        return ns;
+    }
+
+    Message* getMessage() {
+        return batch.m.get();
+    }
+
+    /**
+     * Used mainly to run commands on connections that doesn't support lazy initialization and
+     * does not support commands through the call interface.
+     *
+     * @param cmd The BSON representation of the command to send.
+     *
+     * @return true if command was sent successfully
+     */
+    bool initCommand();
+
+    /**
+     * actually does the query
+     */
+    bool init();
+
+    void initLazy(bool isRetry = false);
+    bool initLazyFinish(bool& retry);
+
+    class Batch {
+        MONGO_DISALLOW_COPYING(Batch);
+        friend class DBClientCursor;
+        std::unique_ptr<Message> m;
+        int nReturned;
+        int pos;
+        const char* data;
+
+    public:
+        Batch() : m(new Message()), nReturned(), pos(), data() {}
     };
 
-} // namespace mongo
+    /**
+     * For exhaust. Used in DBClientConnection.
+     */
+    void exhaustReceiveMore();
+
+private:
+    DBClientCursor(DBClientBase* client,
+                   const std::string& ns,
+                   const BSONObj& query,
+                   long long cursorId,
+                   int nToReturn,
+                   int nToSkip,
+                   const BSONObj* fieldsToReturn,
+                   int queryOptions,
+                   int bs);
+
+    int nextBatchSize();
+
+    Batch batch;
+    DBClientBase* _client;
+    std::string _originalHost;
+    const std::string ns;
+    const bool _isCommand;
+    BSONObj query;
+    int nToReturn;
+    bool haveLimit;
+    int nToSkip;
+    const BSONObj* fieldsToReturn;
+    int opts;
+    int batchSize;
+    std::stack<BSONObj> _putBack;
+    int resultFlags;
+    long long cursorId;
+    bool _ownCursor;  // see decouple()
+    std::string _scopedHost;
+    std::string _lazyHost;
+    bool wasError;
+
+    void dataReceived() {
+        bool retry;
+        std::string lazyHost;
+        dataReceived(retry, lazyHost);
+    }
+    void dataReceived(bool& retry, std::string& lazyHost);
+
+    /**
+     * Called by dataReceived when the query was actually a command. Parses the command reply
+     * according to the RPC protocol used to send it, and then fills in the internal field
+     * of this cursor with the received data.
+     */
+    void commandDataReceived();
+
+    void requestMore();
+
+    // Don't call from a virtual function
+    void _assertIfNull() const {
+        uassert(13348, "connection died", this);
+    }
 
+    // init pieces
+    void _assembleInit(Message& toSend);
+};
+
+/** iterate over objects in current batch only - will not cause a network call
+ */
+class DBClientCursorBatchIterator {
+public:
+    DBClientCursorBatchIterator(DBClientCursor& c) : _c(c), _n() {}
+    bool moreInCurrentBatch() {
+        return _c.moreInCurrentBatch();
+    }
+    BSONObj nextSafe() {
+        massert(13383, "BatchIterator empty", moreInCurrentBatch());
+        ++_n;
+        return _c.nextSafe();
+    }
+    int n() const {
+        return _n;
+    }
+
+private:
+    DBClientCursor& _c;
+    int _n;
+};
+
+}  // namespace mongo