xcsp3_rust/constraints/
xn_values.rs

1/*=============================================================================
2* parser for CSP instances represented in XCSP3 Format
3*
4* Copyright (c) 2023 xcsp.org (contact @ xcsp.org)
5*
6* Permission is hereby granted, free of charge, to any person obtaining a copy
7* of this software and associated documentation files (the "Software"), to deal
8* in the Software without restriction, including without limitation the rights
9* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10* copies of the Software, and to permit persons to whom the Software is
11* furnished to do so, subject to the following conditions:
12*
13* The above copyright notice and this permission notice shall be included in
14* all copies or substantial portions of the Software.
15*
16* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22* THE SOFTWARE.
23*=============================================================================
24*/
25
26/*
27 * <p>@project_name: xcsp3-rust
28 * </p>
29 * <p>@author: luhan zhen
30 * </p>
31 * <p>@date:  2023/7/29 16:47
32 * </p>
33 * <p>@email: zhenlh20@mails.jlu.edu.cn
34 * </p>
35 * <p>@version: 1.0
36 * </p>
37 * <p>@description:
38 * </p>
39 */
40pub mod xcsp3_core {
41    use crate::constraints::xconstraint_trait::xcsp3_core::XConstraintTrait;
42    use crate::data_structs::xint_val_var::xcsp3_core::XVarVal;
43    use crate::data_structs::xrelational_operand::xcsp3_core::Operand;
44    use crate::data_structs::xrelational_operator::xcsp3_core::Operator;
45    use crate::errors::xcsp3error::xcsp3_core::Xcsp3Error;
46    use crate::utils::utils_functions::xcsp3_utils::list_to_vec_var_val;
47    use crate::variables::xdomain::xcsp3_core::XDomainInteger;
48    use crate::variables::xvariable_set::xcsp3_core::XVariableSet;
49    use std::collections::HashMap;
50    use std::fmt::{Display, Formatter};
51
52    pub struct XNValues<'a> {
53        scope: Vec<XVarVal>,
54        map: HashMap<String, &'a XDomainInteger>,
55        set: &'a XVariableSet,
56        operator: Operator,
57        operand: Operand,
58        except: Option<Vec<XVarVal>>,
59    }
60    impl Display for XNValues<'_> {
61        fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
62            let mut ret = String::default();
63            for e in self.scope.iter() {
64                ret.push('(');
65                ret.push_str(&e.to_string());
66                ret.push_str("), ")
67            }
68            if let Some(except) = &self.except {
69                ret.push_str("except = (");
70                for e in except.iter() {
71                    ret.push_str(&e.to_string());
72                    ret.push_str(", ")
73                }
74                ret.push_str(") ");
75            }
76
77            write!(
78                f,
79                "XNValues: scope =  {}, condition = ({:?}, {:?})",
80                ret, self.operator, self.operand
81            )
82        }
83    }
84    impl XConstraintTrait for XNValues<'_> {
85        fn get_scope_string(&self) -> &Vec<XVarVal> {
86            &self.scope
87        }
88
89        fn get_scope(&mut self) -> Vec<(&String, &XDomainInteger)> {
90            for e in &self.scope {
91                if let XVarVal::IntVar(s) = e {
92                    if !self.map.contains_key(s) {
93                        if let Ok(vec) = self.set.construct_scope(&[s]) {
94                            for (vs, vv) in vec.into_iter() {
95                                self.map.insert(vs, vv);
96                            }
97                        }
98                    }
99                }
100            }
101            let mut scope_vec_var: Vec<(&String, &XDomainInteger)> = vec![];
102            for e in self.map.iter() {
103                scope_vec_var.push((e.0, e.1))
104            }
105            scope_vec_var
106        }
107    }
108
109    impl<'a> XNValues<'a> {
110        pub fn from_str(
111            list: &str,
112            condition: &str,
113            except_str: &str,
114            set: &'a XVariableSet,
115        ) -> Result<Self, Xcsp3Error> {
116            match list_to_vec_var_val(list) {
117                Ok(scope_vec_str) => {
118                    let except = if except_str.is_empty() {
119                        None
120                    } else {
121                        match list_to_vec_var_val(except_str) {
122                            Ok(coe_vec) => Some(coe_vec),
123                            Err(e) => return Err(e),
124                        }
125                    };
126                    let condition = condition.replace(['(', ')', ','], " ");
127                    let spilt: Vec<&str> = condition.split_whitespace().collect();
128
129                    let ope: Operator = match Operator::get_operator_by_str(spilt[0]) {
130                        None => {
131                            return Err(Xcsp3Error::get_constraint_sum_error(
132                                "parse sum  constraint Operator error, ",
133                            ));
134                        }
135                        Some(o) => o,
136                    };
137
138                    let rand: Operand = match Operand::get_operand_by_str(&spilt[1..], &ope) {
139                        None => {
140                            return Err(Xcsp3Error::get_constraint_sum_error(
141                                "parse sum constraint Operand error, ",
142                            ));
143                        }
144                        Some(r) => r,
145                    };
146                    Ok(Self::new(scope_vec_str, set, ope, rand, except))
147                }
148                Err(e) => Err(e),
149            }
150        }
151
152        pub fn new(
153            scope: Vec<XVarVal>,
154            set: &'a XVariableSet,
155            operator: Operator,
156            operand: Operand,
157            except: Option<Vec<XVarVal>>,
158        ) -> Self {
159            Self {
160                scope,
161                map: Default::default(),
162                set,
163                operator,
164                operand,
165                except,
166            }
167        }
168
169        pub fn get_except(&self) -> &Option<Vec<XVarVal>> {
170            &self.except
171        }
172        pub fn get_operand(&self) -> &Operand {
173            &self.operand
174        }
175
176        pub fn get_operator(&self) -> &Operator {
177            &self.operator
178        }
179    }
180}
xcsp3_rust/constraints/xn_values.rs

xcsp3_rust/constraints/
xn_values.rs
