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//! chrono types
//!
//! based on Dart VM, microseconds unit is used
//!
//! recommendations below implies UTC based conversions,
//! as these are generally easier to work with.
//! > see [timestamp_micros](https://docs.rs/chrono/0.4.20/chrono/naive/struct.NaiveDateTime.html?search=timestamp_micros#method.timestamp_micros)
use crate::{
ffi::{DartCObject, DartHandleFinalizer, DartTypedDataType},
into_dart::{free_zero_copy_buffer_i64, DartTypedDataTypeTrait},
IntoDart,
};
impl IntoDart for chrono::DateTime<chrono::Utc> {
/// on the other side of FFI, value should be reconstructed like:
///
/// - hydrate into Dart [DateTime](https://api.dart.dev/stable/2.18.0/dart-core/DateTime/DateTime.fromMicrosecondsSinceEpoch.html)
/// `DateTime.fromMicrosecondsSinceEpoch(raw, isUtc: true);`
///
/// - hydrate into Rust [DateTime](chrono::DateTime)::<[Utc](chrono::Utc)>
/// ```rust,ignore
/// let s = (raw / 1_000_000) as i64;
/// let ns = (raw.rem_euclid(1_000_000) * 1_000) as u32;
/// chrono::DateTime::<chrono::Utc>::from_utc(
/// chrono::NaiveDateTime::from_timestamp(s, ns), chrono::Utc);
/// ```
///
/// note that it could overflow under the same conditions as of [chrono::NaiveDateTime::from_timestamp](https://docs.rs/chrono/0.4.20/chrono/naive/struct.NaiveDateTime.html#method.from_timestamp)
fn into_dart(self) -> DartCObject {
self.timestamp_micros().into_dart()
}
}
impl IntoDart for chrono::DateTime<chrono::Local> {
/// on the other side of FFI, value should be reconstructed like:
///
/// - hydrate into Dart [DateTime](https://api.dart.dev/stable/2.18.0/dart-core/DateTime/DateTime.fromMicrosecondsSinceEpoch.html)
/// `DateTime.fromMicrosecondsSinceEpoch(raw, isUtc: false);`
///
/// - hydrate into Rust [DateTime](chrono::DateTime)::<[Local](chrono::Local)>
/// ```rust,ignore
/// let s = (raw / 1_000_000) as i64;
/// let ns = (raw.rem_euclid(1_000_000) * 1_000) as u32;
/// chrono::DateTime::<chrono::Local>::from(
/// chrono::DateTime::<chrono::Utc>::from_utc(
/// chrono::NaiveDateTime::from_timestamp(s, ns), chrono::Utc));
/// ```
///
/// note that it could overflow under the same conditions as of [chrono::NaiveDateTime::from_timestamp](https://docs.rs/chrono/0.4.20/chrono/naive/struct.NaiveDateTime.html#method.from_timestamp)
fn into_dart(self) -> DartCObject {
self.timestamp_micros().into_dart()
}
}
impl IntoDart for chrono::NaiveDate {
/// on the other side of FFI, value should be reconstructed like:
///
/// - hydrate into Dart [DateTime](https://api.dart.dev/stable/2.18.0/dart-core/DateTime/DateTime.fromMicrosecondsSinceEpoch.html)
/// `DateTime.fromMicrosecondsSinceEpoch(raw, isUtc: true);`
///
/// - hydrate into Rust [NaiveDateTime](chrono::NaiveDate)
/// ```rust,ignore
/// let s = (raw / 1_000_000) as i64;
/// let ns = (raw.rem_euclid(1_000_000) * 1_000) as u32;
/// chrono::NaiveDateTime::from_timestamp(s, ns)
/// ```
///
/// note that it could overflow under the same conditions as of [chrono::NaiveDateTime::from_timestamp](https://docs.rs/chrono/0.4.20/chrono/naive/struct.NaiveDateTime.html#method.from_timestamp)
fn into_dart(self) -> DartCObject {
self.signed_duration_since(chrono::NaiveDate::MIN)
.into_dart()
}
}
impl IntoDart for chrono::NaiveDateTime {
/// on the other side of FFI, value should be reconstructed like:
///
/// - hydrate into Dart [DateTime](https://api.dart.dev/stable/2.18.0/dart-core/DateTime/DateTime.fromMicrosecondsSinceEpoch.html)
/// `DateTime.fromMicrosecondsSinceEpoch(raw, isUtc: true);`
///
/// - hydrate into Rust [NaiveDateTime](chrono::NaiveDateTime)
/// ```rust,ignore
/// let s = (raw / 1_000_000) as i64;
/// let ns = (raw.rem_euclid(1_000_000) * 1_000) as u32;
/// chrono::NaiveDateTime::from_timestamp(s, ns)
/// ```
///
/// note that it could overflow under the same conditions as of [chrono::NaiveDateTime::from_timestamp](https://docs.rs/chrono/0.4.20/chrono/naive/struct.NaiveDateTime.html#method.from_timestamp)
fn into_dart(self) -> DartCObject {
self.timestamp_micros().into_dart()
}
}
impl IntoDart for chrono::Duration {
/// on the other side of FFI, value should be reconstructed like:
///
/// - hydrate into Dart [Duration](https://api.dart.dev/stable/2.18.0/dart-core/Duration/Duration.html)
/// `Duration(microseconds: raw);`
///
/// - hydrate into Rust [Duration](chrono::Duration)
/// `chrono::Duration::microseconds(raw);`
fn into_dart(self) -> DartCObject {
self.num_microseconds().into_dart()
}
}
impl IntoDart for Vec<chrono::DateTime<chrono::Utc>> {
fn into_dart(self) -> DartCObject {
self.iter()
.map(chrono::DateTime::<chrono::Utc>::timestamp_micros)
.collect::<Vec<_>>()
.into_dart()
}
}
impl<const N: usize> IntoDart for [chrono::DateTime<chrono::Utc>; N] {
fn into_dart(self) -> DartCObject {
let vec: Vec<_> = self.into();
vec.into_dart()
}
}
impl DartTypedDataTypeTrait for chrono::DateTime<chrono::Utc> {
fn dart_typed_data_type() -> DartTypedDataType {
DartTypedDataType::Int64
}
fn function_pointer_of_free_zero_copy_buffer() -> DartHandleFinalizer {
free_zero_copy_buffer_i64
}
}
impl IntoDart for Vec<chrono::DateTime<chrono::Local>> {
fn into_dart(self) -> DartCObject {
self.iter()
.map(chrono::DateTime::<chrono::Local>::timestamp_micros)
.collect::<Vec<_>>()
.into_dart()
}
}
impl<const N: usize> IntoDart for [chrono::DateTime<chrono::Local>; N] {
fn into_dart(self) -> DartCObject {
let vec: Vec<_> = self.into();
vec.into_dart()
}
}
impl DartTypedDataTypeTrait for chrono::DateTime<chrono::Local> {
fn dart_typed_data_type() -> DartTypedDataType {
DartTypedDataType::Int64
}
fn function_pointer_of_free_zero_copy_buffer() -> DartHandleFinalizer {
free_zero_copy_buffer_i64
}
}
impl IntoDart for Vec<chrono::NaiveDate> {
fn into_dart(self) -> DartCObject {
self.iter()
.map(|lhs| lhs.signed_duration_since(chrono::NaiveDate::MIN))
.collect::<Vec<_>>()
.into_dart()
}
}
impl<const N: usize> IntoDart for [chrono::NaiveDate; N] {
fn into_dart(self) -> DartCObject {
let vec: Vec<_> = self.into();
vec.into_dart()
}
}
impl DartTypedDataTypeTrait for chrono::NaiveDate {
fn dart_typed_data_type() -> DartTypedDataType {
DartTypedDataType::Int64
}
fn function_pointer_of_free_zero_copy_buffer() -> DartHandleFinalizer {
free_zero_copy_buffer_i64
}
}
impl IntoDart for Vec<chrono::NaiveDateTime> {
fn into_dart(self) -> DartCObject {
self.iter()
.map(chrono::NaiveDateTime::timestamp_micros)
.collect::<Vec<_>>()
.into_dart()
}
}
impl<const N: usize> IntoDart for [chrono::NaiveDateTime; N] {
fn into_dart(self) -> DartCObject {
let vec: Vec<_> = self.into();
vec.into_dart()
}
}
impl DartTypedDataTypeTrait for chrono::NaiveDateTime {
fn dart_typed_data_type() -> DartTypedDataType {
DartTypedDataType::Int64
}
fn function_pointer_of_free_zero_copy_buffer() -> DartHandleFinalizer {
free_zero_copy_buffer_i64
}
}
impl IntoDart for Vec<chrono::Duration> {
fn into_dart(self) -> DartCObject {
self.iter()
.map(chrono::Duration::num_microseconds)
.collect::<Vec<_>>()
.into_dart()
}
}
impl<const N: usize> IntoDart for [chrono::Duration; N] {
fn into_dart(self) -> DartCObject {
let vec: Vec<_> = self.into();
vec.into_dart()
}
}