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Change signature of VTab::best_index

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This commit is contained in:
gwenn
2016-08-14 09:08:42 +02:00
parent c8b09e2ee7
commit a90388e6bf
3 changed files with 14 additions and 6 deletions
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12
src/vtab/mod.rs
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@@ -45,11 +45,17 @@ pub trait VTab<C: VTabCursor<Self>>: Sized {
/// 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>;
/// Determine the best way to access the virtual table.
fn best_index(&self, info: *mut ffi::sqlite3_index_info);
fn best_index(&self, info: &mut IndexInfo);
/// Create a new cursor used for accessing a virtual table.
fn open(&self) -> Result<C>;
}
pub struct IndexInfo(*mut ffi::sqlite3_index_info);
impl IndexInfo {
// TODO
}
/// Virtual table cursor trait.
pub trait VTabCursor<V: VTab<Self>>: Sized {
/// Accessor to the associated virtual table.
@@ -71,6 +77,7 @@ pub trait VTabCursor<V: VTab<Self>>: Sized {
fn rowid(&self) -> Result<i64>;
}
// FIXME clash with functions::Context
pub struct Context(*mut ffi::sqlite3_context);
impl Context {
@@ -221,7 +228,8 @@ unsafe extern "C" fn $best_index(vtab: *mut ffi::sqlite3_vtab,
info: *mut ffi::sqlite3_index_info)
-> libc::c_int {
let vtab = vtab as *mut $vtab;
(*vtab).best_index(info);
let mut idx_info = IndexInfo(info);
(*vtab).best_index(&mut idx_info);
ffi::SQLITE_OK
}
unsafe extern "C" fn $destroy(vtab: *mut ffi::sqlite3_vtab) -> libc::c_int {