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https://github.com/isar/rusqlite.git
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Introduce init_module! macro to create sqlite_module
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gwenn
parent
f749d24ac1
commit
f261e8f7eb
164
src/vtab.rs
164
src/vtab.rs
@ -99,20 +99,28 @@ fn escape_quote(identifier: String) -> String {
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}
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}
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static INT_ARRAY_MODULE: ffi::sqlite3_module = ffi::sqlite3_module {
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#[macro_export]
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macro_rules! init_module {
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($module_name: ident, $vtab: ident, $cursor: ty,
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$create: ident, $best_index: ident, $destroy: ident,
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$open: ident, $close: ident,
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$filter: ident, $next: ident, $eof: ident,
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$column: ident, $rowid: ident) => {
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static $module_name: ffi::sqlite3_module = ffi::sqlite3_module {
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iVersion: 1,
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xCreate: Some(x_create),
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xConnect: Some(x_create), /* A virtual table is eponymous if its xCreate method is the exact same function as the xConnect method */
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xBestIndex: Some(x_best_index),
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xDisconnect: Some(x_destroy),
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xDestroy: Some(x_destroy),
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xOpen: Some(x_open),
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xClose: Some(x_close),
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xFilter: Some(x_filter),
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xNext: Some(x_next),
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xEof: Some(x_eof),
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xColumn: Some(x_column),
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xRowid: Some(x_rowid),
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xCreate: Some($create),
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xConnect: Some($create), /* A virtual table is eponymous if its xCreate method is the exact same function as the xConnect method */
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xBestIndex: Some($best_index),
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xDisconnect: Some($destroy),
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xDestroy: Some($destroy),
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xOpen: Some($open),
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xClose: Some($close),
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xFilter: Some($filter),
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xNext: Some($next),
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xEof: Some($eof),
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xColumn: Some($column),
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xRowid: Some($rowid),
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xUpdate: None, // TODO
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xBegin: None,
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xSync: None,
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@ -125,16 +133,16 @@ static INT_ARRAY_MODULE: ffi::sqlite3_module = ffi::sqlite3_module {
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xRollbackTo: None,
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};
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unsafe extern "C" fn x_create(db: *mut ffi::sqlite3,
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unsafe extern "C" fn $create(db: *mut ffi::sqlite3,
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aux: *mut libc::c_void,
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argc: libc::c_int,
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argv: *const *const libc::c_char,
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pp_vtab: *mut *mut ffi::sqlite3_vtab,
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err_msg: *mut *mut libc::c_char)
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-> libc::c_int {
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match IntArrayVTab::create(db, aux, argc, argv) {
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match $vtab::create(db, aux, argc, argv) {
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Ok(vtab) => {
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let boxed_vtab: *mut IntArrayVTab = Box::into_raw(Box::new(vtab));
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let boxed_vtab: *mut $vtab = Box::into_raw(Box::new(vtab));
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*pp_vtab = boxed_vtab as *mut ffi::sqlite3_vtab;
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ffi::SQLITE_OK
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}
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@ -154,12 +162,73 @@ unsafe extern "C" fn x_create(db: *mut ffi::sqlite3,
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}
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}
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}
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unsafe extern "C" fn x_destroy(vtab: *mut ffi::sqlite3_vtab) -> libc::c_int {
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let vtab = vtab as *mut IntArrayVTab;
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let _: Box<IntArrayVTab> = Box::from_raw(mem::transmute(vtab));
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unsafe extern "C" fn $best_index(vtab: *mut ffi::sqlite3_vtab,
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info: *mut ffi::sqlite3_index_info)
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-> libc::c_int {
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let vtab = vtab as *mut $vtab;
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(*vtab).best_index(info);
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ffi::SQLITE_OK
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}
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unsafe extern "C" fn $destroy(vtab: *mut ffi::sqlite3_vtab) -> libc::c_int {
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let vtab = vtab as *mut $vtab;
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let _: Box<$vtab> = Box::from_raw(mem::transmute(vtab));
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ffi::SQLITE_OK
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}
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unsafe extern "C" fn $open(vtab: *mut ffi::sqlite3_vtab,
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pp_cursor: *mut *mut ffi::sqlite3_vtab_cursor)
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-> libc::c_int {
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let vtab = vtab as *mut $vtab;
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let cursor = (*vtab).open();
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let boxed_cursor: *mut $cursor = Box::into_raw(Box::new(cursor));
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*pp_cursor = boxed_cursor as *mut ffi::sqlite3_vtab_cursor;
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ffi::SQLITE_OK
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}
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unsafe extern "C" fn $close(cursor: *mut ffi::sqlite3_vtab_cursor) -> libc::c_int {
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let cursor = cursor as *mut $cursor;
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let _: Box<$cursor> = Box::from_raw(mem::transmute(cursor));
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ffi::SQLITE_OK
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}
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unsafe extern "C" fn $filter(cursor: *mut ffi::sqlite3_vtab_cursor,
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_idx_num: libc::c_int,
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_idx_str: *const libc::c_char,
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_argc: libc::c_int,
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_argv: *mut *mut ffi::sqlite3_value)
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-> libc::c_int {
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let cursor = cursor as *mut $cursor;
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(*cursor).filter()
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}
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unsafe extern "C" fn $next(cursor: *mut ffi::sqlite3_vtab_cursor) -> libc::c_int {
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let cursor = cursor as *mut $cursor;
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(*cursor).next()
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}
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unsafe extern "C" fn $eof(cursor: *mut ffi::sqlite3_vtab_cursor) -> libc::c_int {
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let cursor = cursor as *mut $cursor;
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(*cursor).eof() as libc::c_int
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}
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unsafe extern "C" fn $column(cursor: *mut ffi::sqlite3_vtab_cursor,
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ctx: *mut ffi::sqlite3_context,
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i: libc::c_int)
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-> libc::c_int {
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let cursor = cursor as *mut $cursor;
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(*cursor).column(ctx, i)
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}
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unsafe extern "C" fn $rowid(cursor: *mut ffi::sqlite3_vtab_cursor,
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p_rowid: *mut ffi::sqlite3_int64)
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-> libc::c_int {
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let cursor = cursor as *mut $cursor;
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*p_rowid = (*cursor).rowid();
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ffi::SQLITE_OK
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}
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}
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}
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init_module!(INT_ARRAY_MODULE, IntArrayVTab, IntArrayVTabCursor,
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int_array_create, int_array_best_index, int_array_destroy,
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int_array_open, int_array_close,
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int_array_filter, int_array_next, int_array_eof,
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int_array_column, int_array_rowid);
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#[repr(C)]
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struct IntArrayVTab {
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@ -210,29 +279,6 @@ impl IntArrayVTab {
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}
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}
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unsafe extern "C" fn x_best_index(vtab: *mut ffi::sqlite3_vtab,
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info: *mut ffi::sqlite3_index_info)
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-> libc::c_int {
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let vtab = vtab as *mut IntArrayVTab;
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(*vtab).best_index(info);
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ffi::SQLITE_OK
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}
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unsafe extern "C" fn x_open(vtab: *mut ffi::sqlite3_vtab,
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pp_cursor: *mut *mut ffi::sqlite3_vtab_cursor)
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-> libc::c_int {
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let vtab = vtab as *mut IntArrayVTab;
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let cursor = (*vtab).open();
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let boxed_cursor: *mut IntArrayVTabCursor = Box::into_raw(Box::new(cursor));
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*pp_cursor = boxed_cursor as *mut ffi::sqlite3_vtab_cursor;
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ffi::SQLITE_OK
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}
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unsafe extern "C" fn x_close(cursor: *mut ffi::sqlite3_vtab_cursor) -> libc::c_int {
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let cursor = cursor as *mut IntArrayVTabCursor;
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let _: Box<IntArrayVTabCursor> = Box::from_raw(mem::transmute(cursor));
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ffi::SQLITE_OK
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}
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#[repr(C)]
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struct IntArrayVTabCursor {
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/// Base class
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@ -281,38 +327,6 @@ impl IntArrayVTabCursor {
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}
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}
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unsafe extern "C" fn x_filter(cursor: *mut ffi::sqlite3_vtab_cursor,
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_idx_num: libc::c_int,
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_idx_str: *const libc::c_char,
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_argc: libc::c_int,
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_argv: *mut *mut ffi::sqlite3_value)
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-> libc::c_int {
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let cursor = cursor as *mut IntArrayVTabCursor;
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(*cursor).filter()
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}
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unsafe extern "C" fn x_next(cursor: *mut ffi::sqlite3_vtab_cursor) -> libc::c_int {
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let cursor = cursor as *mut IntArrayVTabCursor;
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(*cursor).next()
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}
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unsafe extern "C" fn x_eof(cursor: *mut ffi::sqlite3_vtab_cursor) -> libc::c_int {
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let cursor = cursor as *mut IntArrayVTabCursor;
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(*cursor).eof() as libc::c_int
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}
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unsafe extern "C" fn x_column(cursor: *mut ffi::sqlite3_vtab_cursor,
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ctx: *mut ffi::sqlite3_context,
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i: libc::c_int)
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-> libc::c_int {
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let cursor = cursor as *mut IntArrayVTabCursor;
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(*cursor).column(ctx, i)
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}
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unsafe extern "C" fn x_rowid(cursor: *mut ffi::sqlite3_vtab_cursor,
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p_rowid: *mut ffi::sqlite3_int64)
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-> libc::c_int {
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let cursor = cursor as *mut IntArrayVTabCursor;
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*p_rowid = (*cursor).rowid();
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ffi::SQLITE_OK
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}
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unsafe fn result_error(ctx: *mut ffi::sqlite3_context, err: Error) -> libc::c_int {
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match err {
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Error::SqliteFailure(err, s) => {
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