can-dbc 9.0.0

A parser for the DBC format. The DBC format is used to exchange CAN network data.
Documentation 
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use can_dbc_pest::{Pair, Rule};

use crate::ast::ValDescription;
use crate::parser::{collect_expected, next_string, validated_inner, DbcError};

/// Global value table
#[derive(Clone, Debug, PartialEq)]
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
pub struct ValueTable {
    pub name: String,
    #[cfg_attr(feature = "serde", serde(skip_serializing_if = "Vec::is_empty"))]
    pub descriptions: Vec<ValDescription>,
}

impl TryFrom<Pair<'_, Rule>> for ValueTable {
    type Error = DbcError;

    /// Parse value table: `VAL_TABLE_ table_name value1 "description1" value2 "description2" ... ;`
    fn try_from(value: Pair<'_, Rule>) -> Result<Self, Self::Error> {
        let mut pairs = validated_inner(value, Rule::value_table)?;

        let name = next_string(&mut pairs, Rule::table_name)?;
        let descriptions = collect_expected(&mut pairs, Rule::table_value_description)?;

        Ok(Self { name, descriptions })
    }
}

#[cfg(test)]
mod tests {
    use super::*;
    use crate::test_helpers::*;

    #[test]
    fn val_table_test() {
        let def = r#"
VAL_TABLE_ Tst 2 "ABC" 1 "Test A" ;
"#;
        let exp = ValueTable {
            name: "Tst".to_string(),
            descriptions: vec![
                ValDescription {
                    id: 2,
                    description: "ABC".to_string(),
                },
                ValDescription {
                    id: 1,
                    description: "Test A".to_string(),
                },
            ],
        };
        let val = test_into::<ValueTable>(def.trim_start(), Rule::value_table);
        assert_eq!(val, exp);
    }

    #[test]
    fn val_table_no_space_preceding_comma_test() {
        let def = r#"
VAL_TABLE_ Tst 2 "ABC";
"#;
        let exp = ValueTable {
            name: "Tst".to_string(),
            descriptions: vec![ValDescription {
                id: 2,
                description: "ABC".to_string(),
            }],
        };
        let val = test_into::<ValueTable>(def.trim_start(), Rule::value_table);
        assert_eq!(val, exp);
    }
}