sails_rs/gstd/
mod.rs

1#[doc(hidden)]
2#[cfg(feature = "ethexe")]
3pub use ethexe::{EthEvent, EthEventExpo};
4#[doc(hidden)]
5pub use events::{EventEmitter, SailsEvent};
6#[cfg(not(feature = "ethexe"))]
7#[doc(hidden)]
8pub use gstd::handle_signal;
9#[doc(hidden)]
10pub use gstd::{async_init, async_main, handle_reply_with_hook, message_loop};
11pub use gstd::{debug, exec, msg};
12#[doc(hidden)]
13pub use sails_macros::{event, export, program, service};
14pub use syscalls::Syscall;
15
16use crate::{
17    errors::{Error, Result, RtlError},
18    prelude::{any::TypeId, *},
19    utils::MaybeUninitBufferWriter,
20};
21use gcore::stack_buffer;
22
23#[cfg(feature = "ethexe")]
24mod ethexe;
25mod events;
26pub mod services;
27mod syscalls;
28
29pub struct CommandReply<T>(T, ValueUnit);
30
31impl<T> CommandReply<T> {
32    pub fn new(result: T) -> Self {
33        Self(result, 0)
34    }
35
36    pub fn with_value(self, value: ValueUnit) -> Self {
37        Self(self.0, value)
38    }
39
40    pub fn to_tuple(self) -> (T, ValueUnit) {
41        (self.0, self.1)
42    }
43}
44
45impl<T> From<T> for CommandReply<T> {
46    fn from(result: T) -> Self {
47        Self(result, 0)
48    }
49}
50
51impl<T> From<(T, ValueUnit)> for CommandReply<T> {
52    fn from(value: (T, ValueUnit)) -> Self {
53        Self(value.0, value.1)
54    }
55}
56
57pub fn unknown_input_panic(message: &str, input: &[u8]) -> ! {
58    let mut __input = input;
59    match String::decode(&mut __input) {
60        Ok(s) => panic!("{}: {}", message, s),
61        Err(_) => panic!("{}: {}", message, HexSlice(input)),
62    }
63}
64
65struct HexSlice<T: AsRef<[u8]>>(T);
66
67impl<T: AsRef<[u8]>> core::fmt::Display for HexSlice<T> {
68    fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
69        let slice = self.0.as_ref();
70        let len = slice.len();
71        let precision = f.precision().unwrap_or(4);
72
73        f.write_str("0x")?;
74        if len <= precision * 2 {
75            for byte in slice {
76                write!(f, "{byte:02x}")?;
77            }
78        } else {
79            for byte in &slice[..precision] {
80                write!(f, "{byte:02x}")?;
81            }
82            f.write_str("..")?;
83            for byte in &slice[len - precision..] {
84                write!(f, "{byte:02x}")?;
85            }
86        }
87        Ok(())
88    }
89}
90
91impl<T: AsRef<[u8]>> core::fmt::Debug for HexSlice<T> {
92    fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
93        core::fmt::Display::fmt(self, f)
94    }
95}
96
97pub trait InvocationIo {
98    const ROUTE: &'static [u8];
99    type Params: Decode;
100    const ASYNC: bool;
101
102    fn check_asyncness(payload: impl AsRef<[u8]>) -> Result<bool> {
103        let value = payload.as_ref();
104        if !value.starts_with(Self::ROUTE) {
105            return Err(Error::Rtl(RtlError::InvocationPrefixMismatches));
106        }
107
108        Ok(Self::ASYNC)
109    }
110
111    fn decode_params(payload: impl AsRef<[u8]>) -> Result<Self::Params> {
112        let mut value = payload.as_ref();
113        if !value.starts_with(Self::ROUTE) {
114            return Err(Error::Rtl(RtlError::InvocationPrefixMismatches));
115        }
116        value = &value[Self::ROUTE.len()..];
117        Decode::decode(&mut value).map_err(Error::Codec)
118    }
119
120    fn with_optimized_encode<T: Encode, R>(
121        value: &T,
122        prefix: &[u8],
123        f: impl FnOnce(&[u8]) -> R,
124    ) -> R {
125        let size = prefix.len() + Self::ROUTE.len() + Encode::encoded_size(value);
126        stack_buffer::with_byte_buffer(size, |buffer| {
127            let mut buffer_writer = MaybeUninitBufferWriter::new(buffer);
128
129            buffer_writer.write(prefix);
130            buffer_writer.write(Self::ROUTE);
131            Encode::encode_to(value, &mut buffer_writer);
132
133            buffer_writer.with_buffer(f)
134        })
135    }
136
137    fn is_empty_tuple<T: 'static>() -> bool {
138        TypeId::of::<T>() == TypeId::of::<()>()
139    }
140}
sails_rs/gstd/mod.rs

sails_rs/gstd/
mod.rs
