reverser_config/
reverser_config_rust_config_lib_source.rs

1use fidl::unpersist;
2use fidl_cf_sc_internal_reverserconfig::Config as FidlConfig;
3use fuchsia_component_config::{Config as ComponentConfig, Error};
4use fuchsia_inspect::Node;
5use std::convert::TryInto;
6const EXPECTED_CHECKSUM: &[u8] = &[
7    0xf8, 0x3f, 0xbf, 0xc8, 0x80, 0xf6, 0xf4, 0xbd, 0xe7, 0xc8, 0x07, 0x5f, 0x7b, 0xe1, 0x38, 0x58,
8    0x85, 0xd9, 0x52, 0x11, 0xf1, 0x7d, 0xb1, 0x9f, 0x14, 0xb5, 0xfc, 0xfd, 0xfd, 0x31, 0x04, 0x2c,
9];
10const EXPECTED_CHECKSUM_LENGTH: [u8; 2] = (EXPECTED_CHECKSUM.len() as u16).to_le_bytes();
11#[derive(Debug)]
12pub struct Config {
13    pub switch_case: bool,
14    pub use_replacer: bool,
15}
16impl Config {
17    #[doc = r" Take the config startup handle and parse its contents."]
18    #[doc = r""]
19    #[doc = r" # Panics"]
20    #[doc = r""]
21    #[doc = r" If the config startup handle was already taken or if it is not valid."]
22    pub fn take_from_startup_handle() -> Self {
23        <Self as ComponentConfig>::take_from_startup_handle()
24    }
25    #[doc = r" Parse `Self` from `vmo`."]
26    pub fn from_vmo(vmo: &zx::Vmo) -> Result<Self, Error> {
27        <Self as ComponentConfig>::from_vmo(vmo)
28    }
29    #[doc = r" Parse `Self` from `bytes`."]
30    pub fn from_bytes(bytes: &[u8]) -> Result<Self, Error> {
31        <Self as ComponentConfig>::from_bytes(bytes)
32    }
33    pub fn record_inspect(&self, inspector_node: &Node) {
34        <Self as ComponentConfig>::record_inspect(self, inspector_node)
35    }
36}
37impl ComponentConfig for Config {
38    #[doc = r" Parse `Self` from `bytes`."]
39    fn from_bytes(bytes: &[u8]) -> Result<Self, Error> {
40        let (checksum_len_bytes, bytes) = bytes.split_at_checked(2).ok_or(Error::TooFewBytes)?;
41        let checksum_len_bytes: [u8; 2] =
42            checksum_len_bytes.try_into().expect("previous call guaranteed 2 element slice");
43        let checksum_length = u16::from_le_bytes(checksum_len_bytes) as usize;
44        let (observed_checksum, bytes) =
45            bytes.split_at_checked(checksum_length).ok_or(Error::TooFewBytes)?;
46        if observed_checksum != EXPECTED_CHECKSUM {
47            return Err(Error::ChecksumMismatch {
48                expected_checksum: EXPECTED_CHECKSUM.to_vec(),
49                observed_checksum: observed_checksum.to_vec(),
50            });
51        }
52        let fidl_config: FidlConfig = unpersist(bytes).map_err(Error::Unpersist)?;
53        Ok(Self { switch_case: fidl_config.switch_case, use_replacer: fidl_config.use_replacer })
54    }
55    fn to_bytes(&self) -> Result<Vec<u8>, Error> {
56        let fidl_config = FidlConfig {
57            switch_case: self.switch_case.clone(),
58            use_replacer: self.use_replacer.clone(),
59        };
60        let mut fidl_bytes = fidl::persist(&fidl_config).map_err(Error::Persist)?;
61        let mut bytes = Vec::with_capacity(
62            EXPECTED_CHECKSUM_LENGTH.len() + EXPECTED_CHECKSUM.len() + fidl_bytes.len(),
63        );
64        bytes.extend_from_slice(&EXPECTED_CHECKSUM_LENGTH);
65        bytes.extend_from_slice(EXPECTED_CHECKSUM);
66        bytes.append(&mut fidl_bytes);
67        Ok(bytes)
68    }
69    fn record_inspect(&self, inspector_node: &Node) {
70        inspector_node.record_bool("switch_case", self.switch_case);
71        inspector_node.record_bool("use_replacer", self.use_replacer);
72    }
73}
reverser_config/reverser_config_rust_config_lib_source.rs

reverser_config/
reverser_config_rust_config_lib_source.rs
