fn parse_newick_file(content: &str) -> Result<TreeValue> {
    fn parse_value(pair: Pair<Rule>) -> TreeValue {
        match pair.as_rule() {
            Rule::Leaf => {
                let name = pair.into_inner().next().unwrap().as_str();
                TreeValue::Node {
                    name: Some(name.into()),
                    children: None,
                }
            }
            Rule::Internal => {
                let mut inner_rules = pair.into_inner();
                let children = Some(
                    inner_rules
                        .next()
                        .unwrap()
                        .into_inner()
                        .map(parse_value)
                        .collect(),
                );
                let name = if let Some(clade) = inner_rules.next() {
                    Some(clade.as_str().into())
                } else {
                    None
                };
                TreeValue::Node { children, name }
            }

            Rule::Branch => {
                fn get_weight(mut inner: pest::iterators::Pairs<Rule>) -> f32 {
                    if let Some(weight) = inner.next() {
                        weight.as_str().parse::<f32>().unwrap()
                    } else {
                        f32::NAN
                    }
                }

                let mut inner = pair.into_inner();
                let (node, weight) = if let Some(next) = inner.next() {
                    match next.as_rule() {
                        Rule::SubTree => (parse_value(next), get_weight(inner)),
                        _ => (
                            TreeValue::Node {
                                name: None,
                                children: None,
                            },
                            next.as_str().parse::<f32>().unwrap(),
                        ),
                    }
                } else {
                    (
                        TreeValue::Node {
                            name: None,
                            children: None,
                        },
                        get_weight(inner),
                    )
                };

                TreeValue::Link {
                    weight,
                    node: Box::new(node),
                }
            }

            Rule::SubTree => parse_value(pair.into_inner().next().unwrap()),
            Rule::EOI
            | Rule::WHITESPACE
            | Rule::Tree
            | Rule::Length
            | Rule::BranchSet
            | Rule::float
            | Rule::safe
            | Rule::name => unreachable!(),
        }
    }

    let root = NewickParser::parse(Rule::Tree, &content)
        .map_err(Error::ParsingError)?
        .next()
        .unwrap();

    Ok(parse_value(root))
}
/// Given a string representing a Newick tree, tries to parse it and
/// returns the `TreeValue` of the root
Given a string representing a Newick tree, tries to parse it and
returns the `TreeValue` of the root
Given a string representing a Newick tree tries to parse it and returns the ` TreeValue ` of the root
fn parse_newick_file(content: &str) -> Result<TreeValue> {
    fn parse_value(pair: Pair<Rule>) -> TreeValue {
        match pair.as_rule() {
            Rule::Leaf => {
                let name = pair.into_inner().next().unwrap().as_str();
                TreeValue::Node {
                    name: Some(name.into()),
                    children: None,
                }
            }
            Rule::Internal => {
                let mut inner_rules = pair.into_inner();
                let children = Some(
                    inner_rules
                        .next()
                        .unwrap()
                        .into_inner()
                        .map(parse_value)
                        .collect(),
                );
                let name = if let Some(clade) = inner_rules.next() {
                    Some(clade.as_str().into())
                } else {
                    None
                };
                TreeValue::Node { children, name }
            }
            Rule::Branch => {
                fn get_weight(mut inner: pest::iterators::Pairs<Rule>) -> f32 {
                    if let Some(weight) = inner.next() {
                        weight.as_str().parse::<f32>().unwrap()
                    } else {
                        f32::NAN
                    }
                }
                let mut inner = pair.into_inner();
                let (node, weight) = if let Some(next) = inner.next() {
                    match next.as_rule() {
                        Rule::SubTree => (parse_value(next), get_weight(inner)),
                        _ => (
                            TreeValue::Node {
                                name: None,
                                children: None,
                            },
                            next.as_str().parse::<f32>().unwrap(),
                        ),
                    }
                } else {
                    (
                        TreeValue::Node {
                            name: None,
                            children: None,
                        },
                        get_weight(inner),
                    )
                };
                TreeValue::Link {
                    weight,
                    node: Box::new(node),
                }
            }
            Rule::SubTree => parse_value(pair.into_inner().next().unwrap()),
            Rule::EOI
            | Rule::WHITESPACE
            | Rule::Tree
            | Rule::Length
            | Rule::BranchSet
            | Rule::float
            | Rule::safe
            | Rule::name => unreachable!(),
        }
    }
    let root = NewickParser::parse(Rule::Tree, &content)
        .map_err(Error::ParsingError)?
        .next()
        .unwrap();
    Ok(parse_value(root))
}
fn parse_newick_file ( content : & str ) -> Result < TreeValue > { fn parse_value ( pair : Pair < Rule > ) -> TreeValue { match pair . as_rule ( ) { Rule :: Leaf => { let name = pair . into_inner ( ) . next ( ) . unwrap ( ) . as_str ( ) ; TreeValue :: Node { name : Some ( name . into ( ) ) , children : None , } } Rule :: Internal => { let mut inner_rules = pair . into_inner ( ) ; let children = Some ( inner_rules . next ( ) . unwrap ( ) . into_inner ( ) . map ( parse_value ) . collect ( ) , ) ; let name = if let Some ( clade ) = inner_rules . next ( ) { Some ( clade . as_str ( ) . into ( ) ) } else { None } ; TreeValue :: Node { children , name } } Rule :: Branch => { fn get_weight ( mut inner : pest :: iterators :: Pairs < Rule > ) -> f32 { if let Some ( weight ) = inner . next ( ) { weight . as_str ( ) . parse :: < f32 > ( ) . unwrap ( ) } else { f32 :: NAN } } let mut inner = pair . into_inner ( ) ; let ( node , weight ) = if let Some ( next ) = inner . next ( ) { match next . as_rule ( ) { Rule :: SubTree => ( parse_value ( next ) , get_weight ( inner ) ) , _ => ( TreeValue :: Node { name : None , children : None , } , next . as_str ( ) . parse :: < f32 > ( ) . unwrap ( ) , ) , } } else { ( TreeValue :: Node { name : None , children : None , } , get_weight ( inner ) , ) } ; TreeValue :: Link { weight , node : Box :: new ( node ) , } } Rule :: SubTree => parse_value ( pair . into_inner ( ) . next ( ) . unwrap ( ) ) , Rule :: EOI | Rule :: WHITESPACE | Rule :: Tree | Rule :: Length | Rule :: BranchSet | Rule :: float | Rule :: safe | Rule :: name => unreachable ! ( ) , } } let root = NewickParser :: parse ( Rule :: Tree , & content ) . map_err ( Error :: ParsingError ) ? . next ( ) . unwrap ( ) ; Ok ( parse_value ( root ) ) }
Given a string representing a Newick tree, tries to parse it and
returns the `TreeValue` of the root
Given a string representing a Newick tree tries to parse it and returns the ` TreeValue ` of the root
content
&str
content
&str