Merge branch 'stmt-cache' of https://github.com/gwenn/rusqlite into gwenn-stmt-cache

src/lib.rs

@@ -87,6 +87,7 @@ mod error;
 #[cfg(feature = "load_extension")]mod load_extension_guard;
 #[cfg(feature = "trace")]pub mod trace;
 #[cfg(feature = "backup")]pub mod backup;
+#[cfg(feature = "cache")] pub mod cache;
 #[cfg(feature = "functions")] pub mod functions;
 #[cfg(feature = "blob")] pub mod blob;
 
@@ -912,6 +913,21 @@ impl<'conn> Statement<'conn> {
         }
     }
 
+    #[cfg(feature = "cache")]
+    fn clear_bindings(&mut self) {
+        unsafe {
+            ffi::sqlite3_clear_bindings(self.stmt);
+        };
+    }
+
+    #[cfg(feature = "cache")]
+    fn eq(&self, sql: &str) -> bool {
+        unsafe {
+            let c_slice = CStr::from_ptr(ffi::sqlite3_sql(self.stmt)).to_bytes();
+            str::from_utf8(c_slice).unwrap().eq(sql)
+        }
+    }
+
     fn finalize_(&mut self) -> Result<()> {
         let r = unsafe { ffi::sqlite3_finalize(self.stmt) };
         self.stmt = ptr::null_mut();