pub fn parse<R: BufRead>(mut reader: R) -> io::Result<Instance> {
    let mut instance = Instance::default();
    let mut line = String::new();
    let mut keyword = String::new();
    let mut value = String::new();

    while reader.read_line(&mut line)? != 0 && line.trim() != EOF {
        let r = {
            let s = line.trim();
            s.is_empty() || s == "-1"
        };
        if r {
            line.clear();
            continue;
        }
        let (keyword, value) = {
            let (k, v) = split_colon(&line);
            keyword.clear();
            keyword.push_str(k);
            value.clear();
            value.push_str(v);
            (keyword.as_str(), value.as_str())
        };
        match keyword {
            NAME => {
                instance.name = value.into();
            }
            COMMENT => {
                instance.comment.push(value.into());
            }
            TYPE => {
                instance.set_type(value)?;
            }
            DIMENSION => {
                instance.dimension = parse_value(value)?;
            }
            CAPACITY => {
                instance.capacity = parse_value(value)?;
            }
            EDGE_WEIGHT_TYPE => {
                instance.set_edge_weight_type(value)?;
            }
            EDGE_WEIGHT_FORMAT => instance.set_edge_weight_format(value)?,
            EDGE_DATA_FORMAT => {
                instance.set_edge_data_format(value)?;
            }
            DISPLAY_DATA_TYPE => {
                instance.set_display_data_type(value)?;
            }
            NODE_COORD_TYPE => instance.set_node_coord_type(value)?,
            EDGE_DATA_SECTION => {
                parse_edge_data_section(&mut instance, &mut reader)?;
            }
            NODE_COORD_SECTION => {
                parse_node_coord_section(&mut instance, &mut reader)?;
            }
            EDGE_WEIGHT_SECTION => {
                parse_edge_weight_section(&mut instance, &mut reader)?;
            }
            DISPLAY_DATA_SECTION => {
                parse_display_data_section(&mut instance, &mut reader)?;
            }
            FIXED_EDGES_SECTION => {
                parse_fixed_edges_section(&mut instance, &mut reader)?;
            }
            TOUR_SECTION => {
                parse_tour_section(&mut instance, &mut reader)?;
            }
            DEPOT_SECTION | DEMAND_SECTION => {
                return err_invalid_data!("not implemented: {}", keyword)
            }
            _ => return err_invalid_data!("invalid keyword: {}", keyword),
        }
        line.clear();
    }

    Ok(instance)
}
/// Read a TSPLIB instance from `reader`.
///
/// # Errors
///
/// This function will return an error if an IO error occurs or if the file cannot be parsed.
Read a TSPLIB instance from `reader`.
Read a TSPLIB instance from ` reader ` .
pub fn parse<R: BufRead>(mut reader: R) -> io::Result<Instance> {
    let mut instance = Instance::default();
    let mut line = String::new();
    let mut keyword = String::new();
    let mut value = String::new();
    while reader.read_line(&mut line)? != 0 && line.trim() != EOF {
        let r = {
            let s = line.trim();
            s.is_empty() || s == "-1"
        };
        if r {
            line.clear();
            continue;
        }
        let (keyword, value) = {
            let (k, v) = split_colon(&line);
            keyword.clear();
            keyword.push_str(k);
            value.clear();
            value.push_str(v);
            (keyword.as_str(), value.as_str())
        };
        match keyword {
            NAME => {
                instance.name = value.into();
            }
            COMMENT => {
                instance.comment.push(value.into());
            }
            TYPE => {
                instance.set_type(value)?;
            }
            DIMENSION => {
                instance.dimension = parse_value(value)?;
            }
            CAPACITY => {
                instance.capacity = parse_value(value)?;
            }
            EDGE_WEIGHT_TYPE => {
                instance.set_edge_weight_type(value)?;
            }
            EDGE_WEIGHT_FORMAT => instance.set_edge_weight_format(value)?,
            EDGE_DATA_FORMAT => {
                instance.set_edge_data_format(value)?;
            }
            DISPLAY_DATA_TYPE => {
                instance.set_display_data_type(value)?;
            }
            NODE_COORD_TYPE => instance.set_node_coord_type(value)?,
            EDGE_DATA_SECTION => {
                parse_edge_data_section(&mut instance, &mut reader)?;
            }
            NODE_COORD_SECTION => {
                parse_node_coord_section(&mut instance, &mut reader)?;
            }
            EDGE_WEIGHT_SECTION => {
                parse_edge_weight_section(&mut instance, &mut reader)?;
            }
            DISPLAY_DATA_SECTION => {
                parse_display_data_section(&mut instance, &mut reader)?;
            }
            FIXED_EDGES_SECTION => {
                parse_fixed_edges_section(&mut instance, &mut reader)?;
            }
            TOUR_SECTION => {
                parse_tour_section(&mut instance, &mut reader)?;
            }
            DEPOT_SECTION | DEMAND_SECTION => {
                return err_invalid_data!("not implemented: {}", keyword)
            }
            _ => return err_invalid_data!("invalid keyword: {}", keyword),
        }
        line.clear();
    }
    Ok(instance)
}
pub fn parse < R : BufRead > ( mut reader : R ) -> io :: Result < Instance > { let mut instance = Instance :: default ( ) ; let mut line = String :: new ( ) ; let mut keyword = String :: new ( ) ; let mut value = String :: new ( ) ; while reader . read_line ( & mut line ) ? != 0 && line . trim ( ) != EOF { let r = { let s = line . trim ( ) ; s . is_empty ( ) || s == " " } ; if r { line . clear ( ) ; continue ; } let ( keyword , value ) = { let ( k , v ) = split_colon ( & line ) ; keyword . clear ( ) ; keyword . push_str ( k ) ; value . clear ( ) ; value . push_str ( v ) ; ( keyword . as_str ( ) , value . as_str ( ) ) } ; match keyword { NAME => { instance . name = value . into ( ) ; } COMMENT => { instance . comment . push ( value . into ( ) ) ; } TYPE => { instance . set_type ( value ) ? ; } DIMENSION => { instance . dimension = parse_value ( value ) ? ; } CAPACITY => { instance . capacity = parse_value ( value ) ? ; } EDGE_WEIGHT_TYPE => { instance . set_edge_weight_type ( value ) ? ; } EDGE_WEIGHT_FORMAT => instance . set_edge_weight_format ( value ) ? , EDGE_DATA_FORMAT => { instance . set_edge_data_format ( value ) ? ; } DISPLAY_DATA_TYPE => { instance . set_display_data_type ( value ) ? ; } NODE_COORD_TYPE => instance . set_node_coord_type ( value ) ? , EDGE_DATA_SECTION => { parse_edge_data_section ( & mut instance , & mut reader ) ? ; } NODE_COORD_SECTION => { parse_node_coord_section ( & mut instance , & mut reader ) ? ; } EDGE_WEIGHT_SECTION => { parse_edge_weight_section ( & mut instance , & mut reader ) ? ; } DISPLAY_DATA_SECTION => { parse_display_data_section ( & mut instance , & mut reader ) ? ; } FIXED_EDGES_SECTION => { parse_fixed_edges_section ( & mut instance , & mut reader ) ? ; } TOUR_SECTION => { parse_tour_section ( & mut instance , & mut reader ) ? ; } DEPOT_SECTION | DEMAND_SECTION => { return err_invalid_data ! ( " " keyword ) } _ => return err_invalid_data ! ( " " keyword ) , } line . clear ( ) ; } Ok ( instance ) }
Read a TSPLIB instance from `reader`.
Read a TSPLIB instance from ` reader ` .
reader
R
reader
R
errors
This function will return an error if an IO error occurs or if the file cannot be parsed.
This function will return an error if an IO error occurs or if the file cannot be parsed .