1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
// Copyright 2013 The Servo Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.

//! Immutable numbers.

use core_foundation_sys::base::kCFAllocatorDefault;
pub use core_foundation_sys::number::*;
use std::mem;

use base::TCFType;


declare_TCFType!{
    /// An immutable numeric value.
    CFNumber, CFNumberRef
}
impl_TCFType!(CFNumber, CFNumberRef, CFNumberGetTypeID);
impl_CFTypeDescription!(CFNumber);
impl_CFComparison!(CFNumber, CFNumberCompare);

impl CFNumber {
    #[inline]
    pub fn to_i64(&self) -> Option<i64> {
        unsafe {
            let mut value: i64 = 0;
            let ok = CFNumberGetValue(self.0, kCFNumberSInt64Type, mem::transmute(&mut value));
            if ok { Some(value) } else { None }
        }
    }

    #[inline]
    pub fn to_f32(&self) -> Option<f32> {
        unsafe {
            let mut value: f32 = 0.0;
            let ok = CFNumberGetValue(self.0, kCFNumberFloat32Type, mem::transmute(&mut value));
            if ok { Some(value) } else { None }
        }
    }

    #[inline]
    pub fn to_f64(&self) -> Option<f64> {
        unsafe {
            let mut value: f64 = 0.0;
            let ok = CFNumberGetValue(self.0, kCFNumberFloat64Type, mem::transmute(&mut value));
            if ok { Some(value) } else { None }
        }
    }
}

impl From<i32> for CFNumber {
    #[inline]
    fn from(value: i32) -> Self {
        unsafe {
            let number_ref = CFNumberCreate(
                kCFAllocatorDefault,
                kCFNumberSInt32Type,
                mem::transmute(&value),
            );
            TCFType::wrap_under_create_rule(number_ref)
        }
    }
}

impl From<i64> for CFNumber {
    #[inline]
    fn from(value: i64) -> Self {
        unsafe {
            let number_ref = CFNumberCreate(
                kCFAllocatorDefault,
                kCFNumberSInt64Type,
                mem::transmute(&value),
            );
            TCFType::wrap_under_create_rule(number_ref)
        }
    }
}

impl From<f32> for CFNumber {
    #[inline]
    fn from(value: f32) -> Self {
        unsafe {
            let number_ref = CFNumberCreate(
                kCFAllocatorDefault,
                kCFNumberFloat32Type,
                mem::transmute(&value),
            );
            TCFType::wrap_under_create_rule(number_ref)
        }
    }
}

impl From<f64> for CFNumber {
    #[inline]
    fn from(value: f64) -> Self {
        unsafe {
            let number_ref = CFNumberCreate(
                kCFAllocatorDefault,
                kCFNumberFloat64Type,
                mem::transmute(&value),
            );
            TCFType::wrap_under_create_rule(number_ref)
        }
    }
}