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
use crate::slice::types::IceType;
use quote::{__private::TokenStream, quote};
use super::struct_member::StructMember;
#[derive(Clone, Debug)]
pub struct Exception {
pub id: TokenStream,
pub ice_id: String,
pub members: Vec<StructMember>,
pub extends: Option<IceType>,
}
impl Exception {
pub fn empty() -> Exception {
Exception {
id: TokenStream::new(),
ice_id: String::new(),
members: Vec::new(),
extends: None
}
}
pub fn add_member(&mut self, member: StructMember) {
self.members.push(member);
}
pub fn generate(&self) -> Result<TokenStream, Box<dyn std::error::Error>> {
let id_token = &self.id;
let ice_id = &self.ice_id;
let mut member_tokens = self.members.iter().map(|member| {
member.declare()
}).collect::<Vec<_>>();
let member_to_bytes_tokens = self.members.iter().map(|member| {
member.to_bytes()
}).collect::<Vec<_>>();
let mut member_from_bytes_tokens = self.members.iter().map(|member| {
member.from_bytes()
}).collect::<Vec<_>>();
if self.extends.is_some() {
let token = self.extends.as_ref().unwrap().token();
member_tokens.push(quote!{
extends: #token
});
member_from_bytes_tokens.push(quote!{
extends: #token::from_bytes(&bytes[read as usize..bytes.len()], &mut read)?
});
}
Ok(quote! {
#[derive(Debug)]
pub struct #id_token {
#(#member_tokens),*
}
impl std::fmt::Display for #id_token {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
write!(f, #ice_id)
}
}
impl std::error::Error for #id_token {}
impl ToBytes for #id_token {
fn to_bytes(&self) -> Result<Vec<u8>, Box<dyn std::error::Error + Send + Sync>> {
let mut bytes = Vec::new();
#(#member_to_bytes_tokens);*;
Ok(bytes)
}
}
impl FromBytes for #id_token {
fn from_bytes(bytes: &[u8], read_bytes: &mut i32) -> Result<Self, Box<dyn std::error::Error + Send + Sync>>
where Self: Sized {
let mut read = 0;
let _flag = SliceFlags::from_bytes(&bytes[read as usize..bytes.len()], &mut read)?;
let _slice_name = String::from_bytes(&bytes[read as usize..bytes.len()], &mut read)?;
let obj = Self {
#(#member_from_bytes_tokens);*
};
*read_bytes = *read_bytes + read;
Ok(obj)
}
}
})
}
}