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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::common::span::Span;
use leo_input::values::{
    GroupCoordinate as InputGroupCoordinate,
    Inferred as InputInferred,
    NumberValue as InputNumberValue,
    SignHigh as InputSignHigh,
    SignLow as InputSignLow,
};

use serde::{Deserialize, Serialize};
use std::fmt;
use tendril::StrTendril;

#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub enum GroupCoordinate {
    Number(#[serde(with = "crate::common::tendril_json")] StrTendril, Span),
    SignHigh,
    SignLow,
    Inferred,
}

impl<'ast> From<InputGroupCoordinate<'ast>> for GroupCoordinate {
    fn from(coordinate: InputGroupCoordinate<'ast>) -> Self {
        match coordinate {
            InputGroupCoordinate::Number(number) => GroupCoordinate::from(number),
            InputGroupCoordinate::SignHigh(sign_high) => GroupCoordinate::from(sign_high),
            InputGroupCoordinate::SignLow(sign_low) => GroupCoordinate::from(sign_low),
            InputGroupCoordinate::Inferred(inferred) => GroupCoordinate::from(inferred),
        }
    }
}

impl fmt::Display for GroupCoordinate {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        match self {
            GroupCoordinate::Number(number, _) => write!(f, "{}", number),
            GroupCoordinate::SignHigh => write!(f, "+"),
            GroupCoordinate::SignLow => write!(f, "-"),
            GroupCoordinate::Inferred => write!(f, "_"),
        }
    }
}

impl<'ast> From<InputNumberValue<'ast>> for GroupCoordinate {
    fn from(number: InputNumberValue<'ast>) -> Self {
        let value = number.to_string();
        let span = Span::from(number.span().clone());

        GroupCoordinate::Number(value.into(), span)
    }
}

impl<'ast> From<InputSignHigh<'ast>> for GroupCoordinate {
    fn from(_sign: InputSignHigh<'ast>) -> Self {
        GroupCoordinate::SignHigh
    }
}

impl<'ast> From<InputSignLow<'ast>> for GroupCoordinate {
    fn from(_sign: InputSignLow<'ast>) -> Self {
        GroupCoordinate::SignLow
    }
}

impl<'ast> From<InputInferred<'ast>> for GroupCoordinate {
    fn from(_sign: InputInferred<'ast>) -> Self {
        GroupCoordinate::Inferred
    }
}