Add #[inline] and #[cold] in far more places

src/vtab/mod.rs

@@ -310,6 +310,7 @@ pub struct IndexInfo(*mut ffi::sqlite3_index_info);
 
 impl IndexInfo {
     /// Record WHERE clause constraints.
+    #[inline]
     pub fn constraints(&self) -> IndexConstraintIter<'_> {
         let constraints =
             unsafe { slice::from_raw_parts((*self.0).aConstraint, (*self.0).nConstraint as usize) };
@@ -319,6 +320,7 @@ impl IndexInfo {
     }
 
     /// Information about the ORDER BY clause.
+    #[inline]
     pub fn order_bys(&self) -> OrderByIter<'_> {
         let order_bys =
             unsafe { slice::from_raw_parts((*self.0).aOrderBy, (*self.0).nOrderBy as usize) };
@@ -328,11 +330,13 @@ impl IndexInfo {
     }
 
     /// Number of terms in the ORDER BY clause
+    #[inline]
     pub fn num_of_order_by(&self) -> usize {
         unsafe { (*self.0).nOrderBy as usize }
     }
 
     /// Information about what parameters to pass to `VTabCursor.filter`.
+    #[inline]
     pub fn constraint_usage(&mut self, constraint_idx: usize) -> IndexConstraintUsage<'_> {
         let constraint_usages = unsafe {
             slice::from_raw_parts_mut((*self.0).aConstraintUsage, (*self.0).nConstraint as usize)
@@ -341,6 +345,7 @@ impl IndexInfo {
     }
 
     /// Number used to identify the index
+    #[inline]
     pub fn set_idx_num(&mut self, idx_num: c_int) {
         unsafe {
             (*self.0).idxNum = idx_num;
@@ -348,6 +353,7 @@ impl IndexInfo {
     }
 
     /// True if output is already ordered
+    #[inline]
     pub fn set_order_by_consumed(&mut self, order_by_consumed: bool) {
         unsafe {
             (*self.0).orderByConsumed = if order_by_consumed { 1 } else { 0 };
@@ -355,6 +361,7 @@ impl IndexInfo {
     }
 
     /// Estimated cost of using this index
+    #[inline]
     pub fn set_estimated_cost(&mut self, estimated_ost: f64) {
         unsafe {
             (*self.0).estimatedCost = estimated_ost;
@@ -363,6 +370,7 @@ impl IndexInfo {
 
     /// Estimated number of rows returned.
     #[cfg(feature = "modern_sqlite")] // SQLite >= 3.8.2
+    #[inline]
     pub fn set_estimated_rows(&mut self, estimated_rows: i64) {
         unsafe {
             (*self.0).estimatedRows = estimated_rows;
@@ -383,10 +391,12 @@ pub struct IndexConstraintIter<'a> {
 impl<'a> Iterator for IndexConstraintIter<'a> {
     type Item = IndexConstraint<'a>;
 
+    #[inline]
     fn next(&mut self) -> Option<IndexConstraint<'a>> {
         self.iter.next().map(|raw| IndexConstraint(raw))
     }
 
+    #[inline]
     fn size_hint(&self) -> (usize, Option<usize>) {
         self.iter.size_hint()
     }
@@ -397,16 +407,19 @@ pub struct IndexConstraint<'a>(&'a ffi::sqlite3_index_constraint);
 
 impl IndexConstraint<'_> {
     /// Column constrained.  -1 for ROWID
+    #[inline]
     pub fn column(&self) -> c_int {
         self.0.iColumn
     }
 
     /// Constraint operator
+    #[inline]
     pub fn operator(&self) -> IndexConstraintOp {
         IndexConstraintOp::from(self.0.op)
     }
 
     /// True if this constraint is usable
+    #[inline]
     pub fn is_usable(&self) -> bool {
         self.0.usable != 0
     }
@@ -418,11 +431,13 @@ pub struct IndexConstraintUsage<'a>(&'a mut ffi::sqlite3_index_constraint_usage)
 
 impl IndexConstraintUsage<'_> {
     /// if `argv_index` > 0, constraint is part of argv to `VTabCursor.filter`
+    #[inline]
     pub fn set_argv_index(&mut self, argv_index: c_int) {
         self.0.argvIndex = argv_index;
     }
 
     /// if `omit`, do not code a test for this constraint
+    #[inline]
     pub fn set_omit(&mut self, omit: bool) {
         self.0.omit = if omit { 1 } else { 0 };
     }
@@ -436,10 +451,12 @@ pub struct OrderByIter<'a> {
 impl<'a> Iterator for OrderByIter<'a> {
     type Item = OrderBy<'a>;
 
+    #[inline]
     fn next(&mut self) -> Option<OrderBy<'a>> {
         self.iter.next().map(|raw| OrderBy(raw))
     }
 
+    #[inline]
     fn size_hint(&self) -> (usize, Option<usize>) {
         self.iter.size_hint()
     }
@@ -450,11 +467,13 @@ pub struct OrderBy<'a>(&'a ffi::sqlite3_index_info_sqlite3_index_orderby);
 
 impl OrderBy<'_> {
     /// Column number
+    #[inline]
     pub fn column(&self) -> c_int {
         self.0.iColumn
     }
 
     /// True for DESC.  False for ASC.
+    #[inline]
     pub fn is_order_by_desc(&self) -> bool {
         self.0.desc != 0
     }
@@ -500,6 +519,7 @@ pub struct Context(*mut ffi::sqlite3_context);
 
 impl Context {
     /// Set current cell value
+    #[inline]
     pub fn set_result<T: ToSql>(&mut self, value: &T) -> Result<()> {
         let t = value.to_sql()?;
         unsafe { set_result(self.0, &t) };
@@ -517,11 +537,13 @@ pub struct Values<'a> {
 
 impl Values<'_> {
     /// Returns the number of values.
+    #[inline]
     pub fn len(&self) -> usize {
         self.args.len()
     }
 
     /// Returns `true` if there is no value.
+    #[inline]
     pub fn is_empty(&self) -> bool {
         self.args.is_empty()
     }
@@ -567,6 +589,7 @@ impl Values<'_> {
     }
 
     /// Turns `Values` into an iterator.
+    #[inline]
     pub fn iter(&self) -> ValueIter<'_> {
         ValueIter {
             iter: self.args.iter(),
@@ -578,6 +601,7 @@ impl<'a> IntoIterator for &'a Values<'a> {
     type IntoIter = ValueIter<'a>;
     type Item = ValueRef<'a>;
 
+    #[inline]
     fn into_iter(self) -> ValueIter<'a> {
         self.iter()
     }
@@ -591,12 +615,14 @@ pub struct ValueIter<'a> {
 impl<'a> Iterator for ValueIter<'a> {
     type Item = ValueRef<'a>;
 
+    #[inline]
     fn next(&mut self) -> Option<ValueRef<'a>> {
         self.iter
             .next()
             .map(|&raw| unsafe { ValueRef::from_value(raw) })
     }
 
+    #[inline]
     fn size_hint(&self) -> (usize, Option<usize>) {
         self.iter.size_hint()
     }
@@ -607,6 +633,7 @@ impl Connection {
     ///
     /// Step 3 of [Creating New Virtual Table
     /// Implementations](https://sqlite.org/vtab.html#creating_new_virtual_table_implementations).
+    #[inline]
     pub fn create_module<'vtab, T: VTab<'vtab>>(
         &self,
         module_name: &str,
@@ -977,6 +1004,7 @@ where
 
 /// Virtual table cursors can set an error message by assigning a string to
 /// `zErrMsg`.
+#[cold]
 unsafe fn cursor_error<T>(cursor: *mut ffi::sqlite3_vtab_cursor, result: Result<T>) -> c_int {
     match result {
         Ok(_) => ffi::SQLITE_OK,
@@ -995,6 +1023,7 @@ unsafe fn cursor_error<T>(cursor: *mut ffi::sqlite3_vtab_cursor, result: Result<
 
 /// Virtual tables methods can set an error message by assigning a string to
 /// `zErrMsg`.
+#[cold]
 unsafe fn set_err_msg(vtab: *mut ffi::sqlite3_vtab, err_msg: &str) {
     if !(*vtab).zErrMsg.is_null() {
         ffi::sqlite3_free((*vtab).zErrMsg as *mut c_void);
@@ -1004,6 +1033,7 @@ unsafe fn set_err_msg(vtab: *mut ffi::sqlite3_vtab, err_msg: &str) {
 
 /// To raise an error, the `column` method should use this method to set the
 /// error message and return the error code.
+#[cold]
 unsafe fn result_error<T>(ctx: *mut ffi::sqlite3_context, result: Result<T>) -> c_int {
     match result {
         Ok(_) => ffi::SQLITE_OK,