xcsp3-rust 0.1.0

/*=============================================================================
* parser for CSP instances represented in XCSP3 Format
*
* Copyright (c) 2023 xcsp.org (contact @ xcsp.org)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*=============================================================================
*/

/*
* <p>@project_name: xcsp3-rust
* </p>
* <p>@author: luhan zhen
* </p>
* <p>@date:  2023/7/21 10:42
* </p>
* <p>@email: zhenlh20@mails.jlu.edu.cn
* </p>
* <p>@version: 1.0
* </p>
 * <p>@description: 1.0
* </p>
 */

pub mod xcsp3_core {
    use crate::constraints::xconstraint_trait::xcsp3_core::XConstraintTrait;
    use crate::data_structs::xint_val_var::xcsp3_core::XVarVal;
    use crate::data_structs::xrelational_operand::xcsp3_core::Operand;
    use crate::data_structs::xrelational_operator::xcsp3_core::Operator;
    use crate::errors::xcsp3error::xcsp3_core::Xcsp3Error;
    use crate::utils::utils_functions::xcsp3_utils::list_to_vec_var_val;
    use crate::variables::xdomain::xcsp3_core::XDomainInteger;
    use crate::variables::xvariable_set::xcsp3_core::XVariableSet;
    use std::collections::HashMap;
    use std::fmt::{Display, Formatter};

    // #[derive(Clone)]
    pub struct XMaxMin<'a> {
        scope: Vec<XVarVal>,
        map: HashMap<String, &'a XDomainInteger>,
        set: &'a XVariableSet,
        operator: Operator,
        operand: Operand,
        is_maximum_or_minimum: bool, // true if maximum, false if minimum
    }

    impl Display for XMaxMin<'_> {
        fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
            let mut ret: String;
            if self.is_maximum() {
                ret = "XMaximum: list =  ".to_string();
            } else {
                ret = "XMinimum: list =  ".to_string();
            }
            for e in self.scope.iter() {
                ret.push('(');
                ret.push_str(&e.to_string());
                ret.push_str("), ")
            }
            ret.push_str(&format!(
                " condition = ({:?}, {:?})",
                self.operator, self.operand
            ));
            write!(f, "{}", ret)
        }
    }

    impl XConstraintTrait for XMaxMin<'_> {
        fn get_scope_string(&self) -> &Vec<XVarVal> {
            &self.scope
        }

        fn get_scope(&mut self) -> Vec<(&String, &XDomainInteger)> {
            for e in &self.scope {
                if let XVarVal::IntVar(s) = e {
                    if !self.map.contains_key(s) {
                        if let Ok(vec) = self.set.construct_scope(&[s]) {
                            for (vs, vv) in vec.into_iter() {
                                self.map.insert(vs, vv);
                            }
                        }
                    }
                }
            }
            let mut scope_vec_var: Vec<(&String, &XDomainInteger)> = vec![];
            for e in self.map.iter() {
                scope_vec_var.push((e.0, e.1))
            }
            scope_vec_var
        }
    }

    impl<'a> XMaxMin<'a> {
        pub fn from_str(
            list: &str,
            condition: &str,
            is_maximum_or_minimum: bool,
            set: &'a XVariableSet,
        ) -> Result<Self, Xcsp3Error> {
            match list_to_vec_var_val(list) {
                Ok(scope) => {
                    let condition = condition.replace(['(', ')', ','], " ");
                    let spilt: Vec<&str> = condition.split_whitespace().collect();
                    let ope: Operator = match Operator::get_operator_by_str(spilt[0]) {
                        None => {
                            return Err(Xcsp3Error::get_constraint_sum_error(
                                "parse sum constraint error, ",
                            ))
                        }
                        Some(o) => o,
                    };
                    let rand: Operand = match Operand::get_operand_by_str(&spilt[1..], &ope) {
                        None => {
                            return Err(Xcsp3Error::get_constraint_sum_error(
                                "parse sum constraint error, ",
                            ))
                        }
                        Some(r) => r,
                    };
                    Ok(Self::new(scope, set, ope, rand, is_maximum_or_minimum))
                }
                Err(e) => Err(e),
            }
        }
        pub fn new(
            scope: Vec<XVarVal>,
            set: &'a XVariableSet,
            operator: Operator,
            operand: Operand,
            is_maximum_or_minimum: bool,
        ) -> Self {
            Self {
                scope,
                map: Default::default(),
                set,
                operator,
                operand,
                is_maximum_or_minimum,
            }
        }
        pub fn is_maximum(&self) -> bool {
            self.is_maximum_or_minimum
        }

        pub fn is_minimum(&self) -> bool {
            !self.is_maximum_or_minimum
        }

        pub fn get_operand(&self) -> &Operand {
            &self.operand
        }

        pub fn get_operator(&self) -> &Operator {
            &self.operator
        }
    }
}