rusqlite/src/raw_statement.rs

75 lines
1.8 KiB
Rust
Raw Normal View History

use std::ffi::CStr;
use std::ptr;
use std::os::raw::c_int;
use super::ffi;
// Private newtype for raw sqlite3_stmts that finalize themselves when dropped.
#[derive(Debug)]
pub struct RawStatement(*mut ffi::sqlite3_stmt);
impl RawStatement {
pub fn new(stmt: *mut ffi::sqlite3_stmt) -> RawStatement {
RawStatement(stmt)
}
pub unsafe fn ptr(&self) -> *mut ffi::sqlite3_stmt {
self.0
}
pub fn column_count(&self) -> c_int {
unsafe { ffi::sqlite3_column_count(self.0) }
}
2016-05-24 09:46:51 +08:00
pub fn column_type(&self, idx: c_int) -> c_int {
unsafe { ffi::sqlite3_column_type(self.0, idx) }
}
pub fn column_name(&self, idx: c_int) -> &CStr {
unsafe { CStr::from_ptr(ffi::sqlite3_column_name(self.0, idx)) }
}
pub fn step(&self) -> c_int {
unsafe { ffi::sqlite3_step(self.0) }
}
pub fn reset(&self) -> c_int {
unsafe { ffi::sqlite3_reset(self.0) }
}
pub fn bind_parameter_count(&self) -> c_int {
unsafe { ffi::sqlite3_bind_parameter_count(self.0) }
}
pub fn bind_parameter_index(&self, name: &CStr) -> Option<c_int> {
let r = unsafe { ffi::sqlite3_bind_parameter_index(self.0, name.as_ptr()) };
match r {
0 => None,
i => Some(i),
}
}
pub fn clear_bindings(&self) -> c_int {
unsafe { ffi::sqlite3_clear_bindings(self.0) }
}
pub fn sql(&self) -> &CStr {
unsafe { CStr::from_ptr(ffi::sqlite3_sql(self.0)) }
}
pub fn finalize(mut self) -> c_int {
self.finalize_()
}
fn finalize_(&mut self) -> c_int {
let r = unsafe { ffi::sqlite3_finalize(self.0) };
self.0 = ptr::null_mut();
r
}
}
impl Drop for RawStatement {
fn drop(&mut self) {
self.finalize_();
}
}