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use std::ops::{RangeFrom, RangeInclusive, RangeToInclusive};
use std::slice;
#[repr(C)]
pub struct ImVector<T> {
size: i32,
capacity: i32,
pub(crate) data: *mut T,
}
impl<T> ImVector<T> {
#[inline]
pub fn as_slice(&self) -> &[T] {
unsafe { slice::from_raw_parts(self.data, self.size as usize) }
}
}
#[test]
#[cfg(test)]
fn test_imvector_memory_layout() {
use std::mem;
assert_eq!(
mem::size_of::<ImVector<u8>>(),
mem::size_of::<sys::ImVector_char>()
);
assert_eq!(
mem::align_of::<ImVector<u8>>(),
mem::align_of::<sys::ImVector_char>()
);
use sys::ImVector_char;
type VectorChar = ImVector<u8>;
macro_rules! assert_field_offset {
($l:ident, $r:ident) => {
assert_eq!(
memoffset::offset_of!(VectorChar, $l),
memoffset::offset_of!(ImVector_char, $r)
);
};
}
assert_field_offset!(size, Size);
assert_field_offset!(capacity, Capacity);
assert_field_offset!(data, Data);
}
pub trait RawWrapper {
type Raw;
unsafe fn raw(&self) -> &Self::Raw;
unsafe fn raw_mut(&mut self) -> &mut Self::Raw;
}
pub unsafe trait RawCast<T>: Sized {
#[inline]
unsafe fn from_raw(raw: &T) -> &Self {
&*(raw as *const _ as *const Self)
}
#[inline]
unsafe fn from_raw_mut(raw: &mut T) -> &mut Self {
&mut *(raw as *mut _ as *mut Self)
}
#[inline]
unsafe fn raw(&self) -> &T {
&*(self as *const _ as *const T)
}
#[inline]
unsafe fn raw_mut(&mut self) -> &mut T {
&mut *(self as *mut _ as *mut T)
}
}
#[repr(u32)]
#[derive(Copy, Clone, Debug, Eq, PartialEq)]
pub enum DataType {
I8 = sys::ImGuiDataType_S8,
U8 = sys::ImGuiDataType_U8,
I16 = sys::ImGuiDataType_S16,
U16 = sys::ImGuiDataType_U16,
I32 = sys::ImGuiDataType_S32,
U32 = sys::ImGuiDataType_U32,
I64 = sys::ImGuiDataType_S64,
U64 = sys::ImGuiDataType_U64,
F32 = sys::ImGuiDataType_Float,
F64 = sys::ImGuiDataType_Double,
}
pub unsafe trait DataTypeKind: Copy {
const KIND: DataType;
const SLIDER_MIN: Self;
const SLIDER_MAX: Self;
}
unsafe impl DataTypeKind for i8 {
const KIND: DataType = DataType::I8;
const SLIDER_MIN: Self = std::i8::MIN;
const SLIDER_MAX: Self = std::i8::MAX;
}
unsafe impl DataTypeKind for u8 {
const KIND: DataType = DataType::U8;
const SLIDER_MIN: Self = std::u8::MIN;
const SLIDER_MAX: Self = std::u8::MAX;
}
unsafe impl DataTypeKind for i16 {
const KIND: DataType = DataType::I16;
const SLIDER_MIN: Self = std::i16::MIN;
const SLIDER_MAX: Self = std::i16::MAX;
}
unsafe impl DataTypeKind for u16 {
const KIND: DataType = DataType::U16;
const SLIDER_MIN: Self = std::u16::MIN;
const SLIDER_MAX: Self = std::u16::MAX;
}
unsafe impl DataTypeKind for i32 {
const KIND: DataType = DataType::I32;
const SLIDER_MIN: Self = std::i32::MIN / 2;
const SLIDER_MAX: Self = std::i32::MAX / 2;
}
unsafe impl DataTypeKind for u32 {
const KIND: DataType = DataType::U32;
const SLIDER_MIN: Self = std::u32::MIN / 2;
const SLIDER_MAX: Self = std::u32::MAX / 2;
}
unsafe impl DataTypeKind for i64 {
const KIND: DataType = DataType::I64;
const SLIDER_MIN: Self = std::i64::MIN / 2;
const SLIDER_MAX: Self = std::i64::MAX / 2;
}
unsafe impl DataTypeKind for u64 {
const KIND: DataType = DataType::U64;
const SLIDER_MIN: Self = std::u64::MIN / 2;
const SLIDER_MAX: Self = std::u64::MAX / 2;
}
unsafe impl DataTypeKind for f32 {
const KIND: DataType = DataType::F32;
const SLIDER_MIN: Self = std::f32::MIN / 2.0;
const SLIDER_MAX: Self = std::f32::MAX / 2.0;
}
unsafe impl DataTypeKind for f64 {
const KIND: DataType = DataType::F64;
const SLIDER_MIN: Self = std::f64::MIN / 2.0;
const SLIDER_MAX: Self = std::f64::MAX / 2.0;
}
pub trait InclusiveRangeBounds<T: Copy> {
fn start_bound(&self) -> Option<&T>;
fn end_bound(&self) -> Option<&T>;
}
impl<T: Copy> InclusiveRangeBounds<T> for RangeFrom<T> {
#[inline]
fn start_bound(&self) -> Option<&T> {
Some(&self.start)
}
#[inline]
fn end_bound(&self) -> Option<&T> {
None
}
}
impl<T: Copy> InclusiveRangeBounds<T> for RangeInclusive<T> {
#[inline]
fn start_bound(&self) -> Option<&T> {
Some(self.start())
}
#[inline]
fn end_bound(&self) -> Option<&T> {
Some(self.end())
}
}
impl<T: Copy> InclusiveRangeBounds<T> for RangeToInclusive<T> {
#[inline]
fn start_bound(&self) -> Option<&T> {
None
}
#[inline]
fn end_bound(&self) -> Option<&T> {
Some(&self.end)
}
}