Change VTabCursor::filter signature

src/blob.rs

@@ -90,11 +90,7 @@ impl Connection {
                                    table.as_ptr(),
                                    column.as_ptr(),
                                    row,
-                                   if read_only {
-                                       0
-                                   } else {
-                                       1
-                                   },
+                                   if read_only { 0 } else { 1 },
                                    &mut blob)
         };
         c.decode_result(rc).map(|_| {

src/functions.rs

@@ -202,7 +202,7 @@ impl<'a> ValueRef<'a> {
 
                 ValueRef::Blob(from_raw_parts(blob as *const u8, len as usize))
             }
-            _ => unreachable!("sqlite3_value_type returned invalid value")
+            _ => unreachable!("sqlite3_value_type returned invalid value"),
         }
     }
 }
@@ -239,7 +239,7 @@ impl<'a> Context<'a> {
         let value = unsafe { ValueRef::from_value(arg) };
         FromSql::column_result(value).map_err(|err| match err {
             Error::InvalidColumnType => Error::InvalidFunctionParameterType,
-            _ => err
+            _ => err,
         })
     }
 
@@ -266,11 +266,7 @@ impl<'a> Context<'a> {
     /// types must be identical.
     pub unsafe fn get_aux<T>(&self, arg: c_int) -> Option<&T> {
         let p = ffi::sqlite3_get_auxdata(self.ctx, arg) as *mut T;
-        if p.is_null() {
-            None
-        } else {
-            Some(&*p)
-        }
+        if p.is_null() { None } else { Some(&*p) }
     }
 }
 

src/lib.rs

@@ -93,12 +93,18 @@ mod named_params;
 mod error;
 mod convenient;
 mod raw_statement;
-#[cfg(feature = "load_extension")]mod load_extension_guard;
-#[cfg(feature = "trace")]pub mod trace;
-#[cfg(feature = "backup")]pub mod backup;
-#[cfg(feature = "functions")]pub mod functions;
-#[cfg(feature = "blob")]pub mod blob;
-#[cfg(all(feature = "vtab", feature = "functions"))]pub mod vtab;
+#[cfg(feature = "load_extension")]
+mod load_extension_guard;
+#[cfg(feature = "trace")]
+pub mod trace;
+#[cfg(feature = "backup")]
+pub mod backup;
+#[cfg(feature = "functions")]
+pub mod functions;
+#[cfg(feature = "blob")]
+pub mod blob;
+#[cfg(all(feature = "vtab", feature = "functions"))]
+pub mod vtab;
 
 // Number of cached prepared statements we'll hold on to.
 const STATEMENT_CACHE_DEFAULT_CAPACITY: usize = 16;
@@ -886,9 +892,7 @@ impl<'conn> Statement<'conn> {
 
         for (i, p) in params.iter().enumerate() {
             try!(unsafe {
-                self.conn.decode_result(
-                    p.bind_parameter(self.stmt.ptr(), (i + 1) as c_int)
-                )
+                self.conn.decode_result(p.bind_parameter(self.stmt.ptr(), (i + 1) as c_int))
             });
         }
 
@@ -1115,7 +1119,8 @@ impl<'a> ValueRef<'a> {
             ffi::SQLITE_FLOAT => ValueRef::Real(ffi::sqlite3_column_double(raw, col)),
             ffi::SQLITE_TEXT => {
                 let text = ffi::sqlite3_column_text(raw, col);
-                assert!(!text.is_null(), "unexpected SQLITE_TEXT column type with NULL data");
+                assert!(!text.is_null(),
+                        "unexpected SQLITE_TEXT column type with NULL data");
                 let s = CStr::from_ptr(text as *const c_char);
 
                 // sqlite3_column_text returns UTF8 data, so our unwrap here should be fine.
@@ -1126,9 +1131,11 @@ impl<'a> ValueRef<'a> {
                 let blob = ffi::sqlite3_column_blob(raw, col);
 
                 let len = ffi::sqlite3_column_bytes(raw, col);
-                assert!(len >= 0, "unexpected negative return from sqlite3_column_bytes");
+                assert!(len >= 0,
+                        "unexpected negative return from sqlite3_column_bytes");
                 if len > 0 {
-                    assert!(!blob.is_null(), "unexpected SQLITE_BLOB column type with NULL data");
+                    assert!(!blob.is_null(),
+                            "unexpected SQLITE_BLOB column type with NULL data");
                     ValueRef::Blob(from_raw_parts(blob as *const u8, len as usize))
                 } else {
                     // The return value from sqlite3_column_blob() for a zero-length BLOB is a NULL pointer.
@@ -1136,7 +1143,7 @@ impl<'a> ValueRef<'a> {
                 }
 
             }
-            _ => unreachable!("sqlite3_column_type returned invalid value")
+            _ => unreachable!("sqlite3_column_type returned invalid value"),
         }
     }
 }

src/named_params.rs

@@ -204,9 +204,7 @@ impl<'conn> Statement<'conn> {
     fn bind_parameters_named(&mut self, params: &[(&str, &ToSql)]) -> Result<()> {
         for &(name, value) in params {
             if let Some(i) = try!(self.parameter_index(name)) {
-                try!(self.conn.decode_result(unsafe {
-                    value.bind_parameter(self.stmt.ptr(), i)
-                }));
+                try!(self.conn.decode_result(unsafe { value.bind_parameter(self.stmt.ptr(), i) }));
             } else {
                 return Err(Error::InvalidParameterName(name.into()));
             }

src/types/serde_json.rs

@@ -24,7 +24,8 @@ impl FromSql for Value {
                 ValueRef::Text(ref s) => serde_json::from_str(s),
                 ValueRef::Blob(ref b) => serde_json::from_slice(b),
                 _ => return Err(Error::InvalidColumnType),
-        }.map_err(|err| Error::FromSqlConversionFailure(Box::new(err)))
+            }
+            .map_err(|err| Error::FromSqlConversionFailure(Box::new(err)))
     }
 }
 

src/vtab/csvtab.rs

@@ -56,10 +56,7 @@ impl CSVTab {
 }
 
 impl VTab<CSVTabCursor> for CSVTab {
-    fn create(db: *mut ffi::sqlite3,
-              _aux: *mut libc::c_void,
-              args: &[&[u8]])
-              -> Result<CSVTab> {
+    fn create(db: *mut ffi::sqlite3, _aux: *mut libc::c_void, args: &[&[u8]]) -> Result<CSVTab> {
         if args.len() < 4 {
             return Err(Error::ModuleError("no CSV file specified".to_owned()));
         }
@@ -173,7 +170,7 @@ impl VTabCursor<CSVTab> for CSVTabCursor {
 
     fn filter(&mut self,
               _idx_num: libc::c_int,
-              _idx_str: *const libc::c_char,
+              _idx_str: Option<&str>,
               _args: &mut [*mut ffi::sqlite3_value])
               -> Result<()> {
         {
@@ -196,7 +193,7 @@ impl VTabCursor<CSVTab> for CSVTabCursor {
             }
         }
 
-        self.row_number = self.row_number + 1;
+        self.row_number += 1;
         Ok(())
     }
     fn eof(&self) -> bool {

src/vtab/int_array.rs

@@ -102,14 +102,14 @@ impl VTabCursor<IntArrayVTab> for IntArrayVTabCursor {
     }
     fn filter(&mut self,
               _idx_num: libc::c_int,
-              _idx_str: *const libc::c_char,
+              _idx_str: Option<&str>,
               _args: &mut [*mut ffi::sqlite3_value])
               -> Result<()> {
         self.i = 0;
         Ok(())
     }
     fn next(&mut self) -> Result<()> {
-        self.i = self.i + 1;
+        self.i += 1;
         Ok(())
     }
     fn eof(&self) -> bool {

src/vtab/mod.rs

@@ -42,10 +42,7 @@ use ffi;
 pub trait VTab<C: VTabCursor<Self>>: Sized {
     /// Create a new instance of a virtual table in response to a CREATE VIRTUAL TABLE statement.
     /// The `db` parameter is a pointer to the SQLite database connection that is executing the CREATE VIRTUAL TABLE statement.
-    fn create(db: *mut ffi::sqlite3,
-              aux: *mut libc::c_void,
-              args: &[&[u8]])
-              -> Result<Self>;
+    fn create(db: *mut ffi::sqlite3, aux: *mut libc::c_void, args: &[&[u8]]) -> Result<Self>;
     /// Determine the best way to access the virtual table.
     fn best_index(&self, info: *mut ffi::sqlite3_index_info);
     /// Create a new cursor used for accessing a virtual table.
@@ -59,7 +56,7 @@ pub trait VTabCursor<V: VTab<Self>>: Sized {
     /// Begin a search of a virtual table.
     fn filter(&mut self,
               idx_num: libc::c_int,
-              idx_str: *const libc::c_char,
+              idx_str: Option<&str>,
               args: &mut [*mut ffi::sqlite3_value])
               -> Result<()>;
     /// Advance cursor to the next row of a result set initiated by `filter`.
@@ -258,11 +255,19 @@ unsafe extern "C" fn $filter(cursor: *mut ffi::sqlite3_vtab_cursor,
                               argc: libc::c_int,
                               argv: *mut *mut ffi::sqlite3_value)
                               -> libc::c_int {
+    use std::ffi::CStr;
     use std::slice;
+    use std::str;
     use vtab::cursor_error;
+    let idx_name = if idx_str.is_null() {
+        None
+    } else {
+        let c_slice = CStr::from_ptr(idx_str).to_bytes();
+        Some(str::from_utf8_unchecked(c_slice))
+    };
     let mut args = slice::from_raw_parts_mut(argv, argc as usize);
     let cr = cursor as *mut $cursor;
-    cursor_error(cursor, (*cr).filter(idx_num, idx_str, &mut args))
+    cursor_error(cursor, (*cr).filter(idx_num, idx_name, &mut args))
 }
 unsafe extern "C" fn $next(cursor: *mut ffi::sqlite3_vtab_cursor) -> libc::c_int {
     use vtab::cursor_error;
@@ -365,4 +370,5 @@ pub fn mprintf(err_msg: &str) -> *mut ::libc::c_char {
 }
 
 pub mod int_array;
-#[cfg(feature = "csvtab")]pub mod csvtab;
+#[cfg(feature = "csvtab")]
+pub mod csvtab;