Graphite/editor/src/communication/message.rs

66 lines
1.6 KiB
Rust

use crate::message_prelude::*;
use graphite_proc_macros::*;
use serde::{Deserialize, Serialize};
use std::collections::hash_map::DefaultHasher;
use std::hash::{Hash, Hasher};
pub trait AsMessage: TransitiveChild
where
Self::TopParent: TransitiveChild<Parent = Self::TopParent, TopParent = Self::TopParent> + AsMessage,
{
fn local_name(self) -> String;
fn global_name(self) -> String {
<Self as Into<Self::TopParent>>::into(self).local_name()
}
}
#[remain::sorted]
#[impl_message]
#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
pub enum Message {
#[remain::unsorted]
NoOp,
#[child]
Dialog(DialogMessage),
#[child]
Frontend(FrontendMessage),
#[child]
Global(GlobalMessage),
#[child]
InputMapper(InputMapperMessage),
#[child]
InputPreprocessor(InputPreprocessorMessage),
#[child]
Layout(LayoutMessage),
#[child]
Portfolio(PortfolioMessage),
#[child]
Tool(ToolMessage),
#[child]
Workspace(WorkspaceMessage),
}
impl Message {
/// Returns the byte representation of the message.
///
/// # Safety
/// This function reads from uninitialized memory!!!
/// Only use if you know what you are doing.
unsafe fn as_slice(&self) -> &[u8] {
core::slice::from_raw_parts(self as *const Message as *const u8, std::mem::size_of::<Message>())
}
/// Returns a pseudo hash that should uniquely identify the message.
/// This is needed because `Hash` is not implemented for `f64`s
///
/// # Safety
/// This function reads from uninitialized memory but the generated value should be fine.
pub fn pseudo_hash(&self) -> u64 {
let mut s = DefaultHasher::new();
unsafe { self.as_slice() }.hash(&mut s);
s.finish()
}
}