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use std::{marker::PhantomData, mem, ptr};
use glib::{translate::*, GStr};
use crate::Script;
#[derive(Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
pub struct ScriptIter<'text> {
ptr: ptr::NonNull<ffi::PangoScriptIter>,
text: PhantomData<&'text GStr>,
}
#[cfg(any(feature = "v1_44", feature = "dox"))]
#[cfg_attr(feature = "dox", doc(cfg(feature = "v1_44")))]
impl<'text> Clone for ScriptIter<'text> {
#[inline]
fn clone(&self) -> Self {
let ptr = unsafe {
ptr::NonNull::new_unchecked(glib::gobject_ffi::g_boxed_copy(
ffi::pango_script_iter_get_type(),
self.ptr.as_ptr() as *mut _,
) as *mut _)
};
Self {
ptr,
text: PhantomData,
}
}
}
impl<'text> Drop for ScriptIter<'text> {
#[inline]
fn drop(&mut self) {
unsafe {
ffi::pango_script_iter_free(self.ptr.as_ptr());
}
}
}
#[cfg(any(feature = "v1_44", feature = "dox"))]
#[cfg_attr(feature = "dox", doc(cfg(feature = "v1_44")))]
impl<'text> glib::StaticType for ScriptIter<'text> {
#[inline]
fn static_type() -> glib::Type {
unsafe { from_glib(ffi::pango_script_iter_get_type()) }
}
}
impl<'text> ScriptIter<'text> {
#[doc(alias = "pango_script_iter_new")]
pub fn new(text: impl AsRef<GStr> + 'text) -> Self {
let text = text.as_ref();
let length = text.len() as i32;
unsafe { from_glib_full(ffi::pango_script_iter_new(text.as_ptr(), length)) }
}
#[doc(alias = "pango_script_iter_get_range")]
#[doc(alias = "get_range")]
pub fn range(&mut self) -> (&'text GStr, &'text GStr, Script) {
unsafe {
let mut start = ptr::null();
let mut end = ptr::null();
let mut script = mem::MaybeUninit::uninit();
ffi::pango_script_iter_get_range(
self.to_glib_none_mut().0,
&mut start,
&mut end,
script.as_mut_ptr(),
);
(
GStr::from_ptr(start),
GStr::from_ptr(end),
from_glib(script.assume_init()),
)
}
}
#[doc(alias = "pango_script_iter_next")]
#[doc(alias = "next")]
pub fn next_range(&mut self) -> bool {
unsafe { from_glib(ffi::pango_script_iter_next(self.to_glib_none_mut().0)) }
}
}
impl<'text> IntoIterator for ScriptIter<'text> {
type Item = (&'text GStr, &'text GStr, Script);
type IntoIter = ScriptIntoIter<'text>;
fn into_iter(self) -> Self::IntoIter {
ScriptIntoIter(Some(self))
}
}
#[cfg_attr(any(feature = "v1_44", feature = "dox"), derive(Clone))]
#[derive(Debug)]
#[repr(transparent)]
pub struct ScriptIntoIter<'text>(Option<ScriptIter<'text>>);
impl<'text> Iterator for ScriptIntoIter<'text> {
type Item = (&'text GStr, &'text GStr, Script);
fn next(&mut self) -> Option<Self::Item> {
if let Some(iter) = &mut self.0 {
let attrs = iter.range();
if !iter.next_range() {
self.0 = None;
}
Some(attrs)
} else {
None
}
}
}
impl<'text> std::iter::FusedIterator for ScriptIntoIter<'text> {}
#[doc(hidden)]
impl<'a, 'text> ToGlibPtr<'a, *const ffi::PangoScriptIter> for ScriptIter<'text>
where
'text: 'a,
{
type Storage = &'a Self;
#[inline]
fn to_glib_none(&'a self) -> Stash<'a, *const ffi::PangoScriptIter, Self> {
Stash(self.ptr.as_ptr() as *const _, self)
}
}
#[doc(hidden)]
impl<'a, 'text> ToGlibPtrMut<'a, *mut ffi::PangoScriptIter> for ScriptIter<'text>
where
'text: 'a,
{
type Storage = &'a mut Self;
#[inline]
fn to_glib_none_mut(&'a mut self) -> StashMut<'a, *mut ffi::PangoScriptIter, Self> {
StashMut(self.ptr.as_ptr(), self)
}
}
#[doc(hidden)]
impl<'text> FromGlibPtrFull<*mut ffi::PangoScriptIter> for ScriptIter<'text> {
#[inline]
unsafe fn from_glib_full(ptr: *mut ffi::PangoScriptIter) -> Self {
Self {
ptr: ptr::NonNull::new_unchecked(ptr),
text: PhantomData,
}
}
}
#[cfg(test)]
mod tests {
const SCRIPTS: &glib::GStr = glib::gstr!(
"\u{0020}\u{0946}\u{0939}\u{093F}\u{0928}\u{094D}\u{0926}\u{0940}\u{0020}\
\u{0627}\u{0644}\u{0639}\u{0631}\u{0628}\u{064A}\u{0629}\u{0020}"
);
#[test]
fn script_iter() {
let iter = super::ScriptIter::new(SCRIPTS);
let scripts = iter.into_iter().collect::<Vec<_>>();
assert_eq!(scripts.len(), 2);
assert_eq!(scripts[0].0, SCRIPTS);
assert_eq!(scripts[0].1, &SCRIPTS[23..]);
assert_eq!(scripts[0].2, crate::Script::Devanagari);
assert_eq!(scripts[1].0, &SCRIPTS[23..]);
assert_eq!(scripts[1].1, &SCRIPTS[38..]);
assert_eq!(scripts[1].2, crate::Script::Arabic);
}
}