63 lines
1.8 KiB
Rust
63 lines
1.8 KiB
Rust
// Abstract semantic graph (ASG) errors
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//
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// Copyright (C) 2014-2022 Ryan Specialty Group, LLC.
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//
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// This file is part of TAME.
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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//! Errors resulting from operations on the ASG.
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use std::{
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error::Error,
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fmt::{self, Display},
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};
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use super::TransitionError;
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/// An error from an ASG operation.
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#[derive(Debug, PartialEq)]
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pub enum AsgError {
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/// An object could not change state in the manner requested.
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ObjectTransition(TransitionError),
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/// The node was not expected in the current context
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UnexpectedNode(String),
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}
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impl Display for AsgError {
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fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
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match self {
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Self::ObjectTransition(err) => Display::fmt(&err, fmt),
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Self::UnexpectedNode(msg) => {
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write!(fmt, "unexpected node: {}", msg)
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}
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}
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}
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}
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impl Error for AsgError {
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fn source(&self) -> Option<&(dyn Error + 'static)> {
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match self {
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Self::ObjectTransition(err) => err.source(),
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_ => None,
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}
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}
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}
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impl From<TransitionError> for AsgError {
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fn from(err: TransitionError) -> Self {
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Self::ObjectTransition(err)
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}
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}
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