fn reorder<A>(&self, args: &mut Vec<CallArg<A>>, meta: &Meta) -> Result<(), Error> {
        let mut labelled_arguments_given = false;
        let mut seen = std::collections::HashSet::new();

        if self.arity != args.len() {
            return Err(Error::IncorrectArity {
                meta: meta.clone(),
                expected: self.arity,
                given: args.len(),
            });
        }

        for i in 0..args.len() {
            let (label, meta) = match &args[i].label {
                // A labelled argument, we may need to reposition it in the array vector
                Some(l) => {
                    labelled_arguments_given = true;
                    (l, &args[i].meta)
                }

                // Not a labelled argument
                None => {
                    if labelled_arguments_given {
                        return Err(Error::PositionalArgumentAfterLabelled {
                            meta: args[i].meta.clone(),
                        });
                    }
                    continue;
                }
            };

            let position = match self.fields.get(label) {
                None => {
                    return Err(Error::UnknownLabel {
                        meta: meta.clone(),
                        labels: self.fields.clone(),
                        label: label.to_string(),
                    })
                }
                Some(p) => p,
            };

            if *position == i {
                continue;
            }

            if seen.contains(position) {
                return Err(Error::DuplicateArgument {
                    meta: meta.clone(),
                    label: label.to_string(),
                });
            }

            seen.insert(*position);
            args.swap(*position, i);
        }
        Ok(())
    }
/// Reorder an argument list so that labelled fields supplied out-of-order are in the correct
/// order.
///
Reorder an argument list so that labelled fields supplied out-of-order are in the correct
order.
Reorder an argument list so that labelled fields supplied out - of - order are in the correct order .
fn reorder<A>(&self, args: &mut Vec<CallArg<A>>, meta: &Meta) -> Result<(), Error> {
        let mut labelled_arguments_given = false;
        let mut seen = std::collections::HashSet::new();
        if self.arity != args.len() {
            return Err(Error::IncorrectArity {
                meta: meta.clone(),
                expected: self.arity,
                given: args.len(),
            });
        }
        for i in 0..args.len() {
            let (label, meta) = match &args[i].label {
                // A labelled argument, we may need to reposition it in the array vector
                Some(l) => {
                    labelled_arguments_given = true;
                    (l, &args[i].meta)
                }
                // Not a labelled argument
                None => {
                    if labelled_arguments_given {
                        return Err(Error::PositionalArgumentAfterLabelled {
                            meta: args[i].meta.clone(),
                        });
                    }
                    continue;
                }
            };
            let position = match self.fields.get(label) {
                None => {
                    return Err(Error::UnknownLabel {
                        meta: meta.clone(),
                        labels: self.fields.clone(),
                        label: label.to_string(),
                    })
                }
                Some(p) => p,
            };
            if *position == i {
                continue;
            }
            if seen.contains(position) {
                return Err(Error::DuplicateArgument {
                    meta: meta.clone(),
                    label: label.to_string(),
                });
            }
            seen.insert(*position);
            args.swap(*position, i);
        }
        Ok(())
    }
fn reorder < A > ( & self , args : & mut Vec < CallArg < A > > , meta : & Meta ) -> Result < ( ) , Error > { let mut labelled_arguments_given = false ; let mut seen = std :: collections :: HashSet :: new ( ) ; if self . arity != args . len ( ) { return Err ( Error :: IncorrectArity { meta : meta . clone ( ) , expected : self . arity , given : args . len ( ) , } ) ; } for i in 0 .. args . len ( ) { let ( label , meta ) = match & args [ i ] . label { // A labelled argument, we may need to reposition it in the array vector Some ( l ) => { labelled_arguments_given = true ; ( l , & args [ i ] . meta ) } // Not a labelled argument None => { if labelled_arguments_given { return Err ( Error :: PositionalArgumentAfterLabelled { meta : args [ i ] . meta . clone ( ) , } ) ; } continue ; } } ; let position = match self . fields . get ( label ) { None => { return Err ( Error :: UnknownLabel { meta : meta . clone ( ) , labels : self . fields . clone ( ) , label : label . to_string ( ) , } ) } Some ( p ) => p , } ; if * position == i { continue ; } if seen . contains ( position ) { return Err ( Error :: DuplicateArgument { meta : meta . clone ( ) , label : label . to_string ( ) , } ) ; } seen . insert ( * position ) ; args . swap ( * position , i ) ; } Ok ( ( ) ) }
Reorder an argument list so that labelled fields supplied out-of-order are in the correct
order.
Reorder an argument list so that labelled fields supplied out - of - order are in the correct order .
&self
args
&mut Vec<CallArg<A>>
meta
&Meta
&self
args
&mut Vec<CallArg<A>>
meta
&Meta