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exceptionsS.rs
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/
exceptionsS.rs
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/*******************************************************************************
* (c) 2021 Zondax GmbH
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
********************************************************************************/
use crate::raw::{cx_err_t, exception_t};
//use std::convert::{TryFrom, Infallible};
//TODO: map exceptions from `errors.h`
#[derive( Clone, Copy)]
pub enum SyscallError {
Code(exception_t),
}
impl From<exception_t> for SyscallError {
fn from(e: exception_t) -> Self {
Self::Code(e)
}
}
impl Into<()> for SyscallError {
fn into(self) -> () {
()
}
}
impl Into<exception_t> for SyscallError {
fn into(self) -> exception_t {
match self {
Self::Code(e) => e,
}
}
}
//TODO: map errors from `cx_errors.h`
#[derive( Clone, Copy)]
pub enum CXError {
Code(cx_err_t),
}
/*
#[derive( Clone, Copy)]
pub enum CXError {
Carry,
Locked,
Unlocked,
NotLocked,
NotUnlocked,
InternalError,
InvalidParameterSize,
InvalidParameterValue,
InvalidParamenter,
NotInvertible,
Overflow,
MemoryFull,
NoResidue,
}
*/
impl From<cx_err_t> for CXError {
fn from(e: cx_err_t) -> Self {
Self::Code(e)
}
}
impl Into<()> for CXError {
fn into(self) -> () {
()
}
}
impl Into<cx_err_t> for CXError {
fn into(self) -> cx_err_t {
match self {
Self::Code(e) => e,
}
}
}
#[derive( Clone, Copy)]
pub enum Error {
Syscall(SyscallError),
Cx(CXError),
}
impl From<SyscallError> for Error {
fn from(f: SyscallError) -> Self {
Self::Syscall(f)
}
}
impl From<CXError> for Error {
fn from(f: CXError) -> Self {
Self::Cx(f)
}
}
impl From<u16> for Error {
fn from(f: u16) -> Self {
SyscallError::from(f).into()
}
}
impl From<u32> for Error {
fn from(raw: u32) -> Self {
//if we can convert to u16 and back it means the top u16 is empty
if raw == (raw as u16) as u32 {
SyscallError::from(raw as u16).into()
} else {
CXError::from(raw).into()
}
}
}
impl Into<u32> for Error {
fn into(self) -> u32 {
match self {
Self::Cx(cx) => cx.into(),
Self::Syscall(sys) => {
let u: u16 = sys.into();
u as u32
},
}
}
}
pub fn catch<T, F>(syscall: F) -> Result<T, Error>
where
F: FnOnce() -> T,
{
let t = catch_raw(syscall)?;
Ok(t)
}