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// Copyright (C) 2019-2021 Aleo Systems Inc.
// This file is part of the Leo library.

// The Leo library is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.

// The Leo library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.

use crate::errors::ValueError;
use leo_asg::{AsgConvertError, Type};
use leo_ast::{Error as FormattedError, Span};

use std::path::Path;

#[derive(Debug, Error)]
pub enum OutputBytesError {
    #[error("{}", _0)]
    Error(#[from] FormattedError),

    #[error("{}", _0)]
    ValueError(#[from] ValueError),

    #[error("{}", _0)]
    AsgConvertError(#[from] AsgConvertError),
}

impl OutputBytesError {
    pub fn set_path(&mut self, path: &Path) {
        match self {
            OutputBytesError::Error(error) => error.set_path(path),
            OutputBytesError::ValueError(error) => error.set_path(path),
            OutputBytesError::AsgConvertError(_error) => (),
        }
    }

    fn new_from_span(message: String, span: Span) -> Self {
        OutputBytesError::Error(FormattedError::new_from_span(message, span))
    }

    pub fn not_enough_registers(span: Span) -> Self {
        let message = "number of input registers must be greater than or equal to output registers".to_string();

        Self::new_from_span(message, span)
    }

    pub fn mismatched_output_types(left: &Type, right: &Type, span: Span) -> Self {
        let message = format!(
            "Mismatched types. Expected register output type `{}`, found type `{}`.",
            left, right
        );

        Self::new_from_span(message, span)
    }
}