fn build(unprocessed: Unprocessed) -> Result<Processed, Vec<String>> {
        // step 1
        // init internal structure holding all possible data
        let mut data_map = HashMap::with_capacity(
            unprocessed::Scalar::count() + unprocessed.enums.len() + unprocessed.interfaces.len()
                + unprocessed.types.len() + unprocessed.unions.len(),
        );

        // step 2: add builtin scalars
        for &(ref scalar, scalar_name) in unprocessed::Scalar::iter() {
            match data_map.insert(
                String::from(scalar_name),
                unprocessed::GsdlDataItem::Builtin(*scalar),
            ) {
                None => (),
                Some(gsdl_type) => {
                    panic!(format!("Builtin type {:?}  is defined twice", gsdl_type))
                }
            }
        }

        let mut errors = vec![];

        // step 3: add enums
        let mut enums = Vec::with_capacity(unprocessed.enums.len());
        for gsdl_enum in unprocessed.enums {
            let enum_name = gsdl_enum.name.to_owned();
            let key = gsdl_enum.name.to_owned();
            match data_map.insert(key, unprocessed::GsdlDataItem::Enum(gsdl_enum)) {
                None => (),
                Some(gsdl_type) => errors.push(format!(
                    "Enum {} is already defined as {:?}",
                    enum_name, gsdl_type
                )),
            }
            enums.push(enum_name);
        }
        enums.sort_unstable();

        // step 4: add interfaces
        let mut interfaces = Vec::with_capacity(unprocessed.interfaces.len());
        for interface in unprocessed.interfaces {
            let interface_name = interface.name.to_owned();
            let key = interface.name.to_owned();
            match data_map.insert(key, unprocessed::GsdlDataItem::Interface(interface)) {
                None => (),
                Some(gsdl_type) => errors.push(format!(
                    "Interface {} is already defined as {:?}",
                    interface_name, gsdl_type
                )),
            }
            interfaces.push(interface_name);
        }
        interfaces.sort_unstable();

        // step 5: add types
        let mut types = Vec::with_capacity(unprocessed.types.len());
        for gsdl_type in unprocessed.types {
            let type_name = gsdl_type.name.to_owned();
            let key = gsdl_type.name.to_owned();
            match data_map.insert(key, unprocessed::GsdlDataItem::Type(gsdl_type)) {
                None => (),
                Some(gsdl_type) => errors.push(format!(
                    "Type {} is already defined as {:?}",
                    type_name, gsdl_type
                )),
            };
            types.push(type_name);
        }
        types.sort_unstable();

        // step 6: add unions
        let mut unions = vec![];
        for union in unprocessed.unions {
            let union_name = union.name.to_owned();
            let key = union.name.to_owned();
            match data_map.insert(key, unprocessed::GsdlDataItem::Union(union)) {
                None => (),
                Some(gsdl_type) => errors.push(format!(
                    "Union {} is already defined as {:?}",
                    union_name, gsdl_type
                )),
            };
            unions.push(union_name);
        }
        unions.sort_unstable();

        // step 7: init scheme entry points
        let scheme = Scheme {
            query: match unprocessed.query {
                Some(query) => query,
                None => {
                    errors.push(String::from("No scheme query entry point defined"));
                    String::from("")
                }
            },
            mutate: unprocessed.mutate,
        };

        if errors.is_empty() {
            Ok(Processed {
                data_map,
                enums,
                interfaces,
                scheme,
                types,
                unions,
            })
        } else {
            Err(errors)
        }
    }
// internal function to build Processed with minimal checks
internal function to build Processed with minimal checks
internal function to build Processed with minimal checks
fn build(unprocessed: Unprocessed) -> Result<Processed, Vec<String>> {
        // step 1
        // init internal structure holding all possible data
        let mut data_map = HashMap::with_capacity(
            unprocessed::Scalar::count() + unprocessed.enums.len() + unprocessed.interfaces.len()
                + unprocessed.types.len() + unprocessed.unions.len(),
        );
        // step 2: add builtin scalars
        for &(ref scalar, scalar_name) in unprocessed::Scalar::iter() {
            match data_map.insert(
                String::from(scalar_name),
                unprocessed::GsdlDataItem::Builtin(*scalar),
            ) {
                None => (),
                Some(gsdl_type) => {
                    panic!(format!("Builtin type {:?}  is defined twice", gsdl_type))
                }
            }
        }
        let mut errors = vec![];
        // step 3: add enums
        let mut enums = Vec::with_capacity(unprocessed.enums.len());
        for gsdl_enum in unprocessed.enums {
            let enum_name = gsdl_enum.name.to_owned();
            let key = gsdl_enum.name.to_owned();
            match data_map.insert(key, unprocessed::GsdlDataItem::Enum(gsdl_enum)) {
                None => (),
                Some(gsdl_type) => errors.push(format!(
                    "Enum {} is already defined as {:?}",
                    enum_name, gsdl_type
                )),
            }
            enums.push(enum_name);
        }
        enums.sort_unstable();
        // step 4: add interfaces
        let mut interfaces = Vec::with_capacity(unprocessed.interfaces.len());
        for interface in unprocessed.interfaces {
            let interface_name = interface.name.to_owned();
            let key = interface.name.to_owned();
            match data_map.insert(key, unprocessed::GsdlDataItem::Interface(interface)) {
                None => (),
                Some(gsdl_type) => errors.push(format!(
                    "Interface {} is already defined as {:?}",
                    interface_name, gsdl_type
                )),
            }
            interfaces.push(interface_name);
        }
        interfaces.sort_unstable();
        // step 5: add types
        let mut types = Vec::with_capacity(unprocessed.types.len());
        for gsdl_type in unprocessed.types {
            let type_name = gsdl_type.name.to_owned();
            let key = gsdl_type.name.to_owned();
            match data_map.insert(key, unprocessed::GsdlDataItem::Type(gsdl_type)) {
                None => (),
                Some(gsdl_type) => errors.push(format!(
                    "Type {} is already defined as {:?}",
                    type_name, gsdl_type
                )),
            };
            types.push(type_name);
        }
        types.sort_unstable();
        // step 6: add unions
        let mut unions = vec![];
        for union in unprocessed.unions {
            let union_name = union.name.to_owned();
            let key = union.name.to_owned();
            match data_map.insert(key, unprocessed::GsdlDataItem::Union(union)) {
                None => (),
                Some(gsdl_type) => errors.push(format!(
                    "Union {} is already defined as {:?}",
                    union_name, gsdl_type
                )),
            };
            unions.push(union_name);
        }
        unions.sort_unstable();
        // step 7: init scheme entry points
        let scheme = Scheme {
            query: match unprocessed.query {
                Some(query) => query,
                None => {
                    errors.push(String::from("No scheme query entry point defined"));
                    String::from("")
                }
            },
            mutate: unprocessed.mutate,
        };
        if errors.is_empty() {
            Ok(Processed {
                data_map,
                enums,
                interfaces,
                scheme,
                types,
                unions,
            })
        } else {
            Err(errors)
        }
    }
fn build ( unprocessed : Unprocessed ) -> Result < Processed , Vec < String > > { // step 1 // init internal structure holding all possible data let mut data_map = HashMap :: with_capacity ( unprocessed :: Scalar :: count ( ) + unprocessed . enums . len ( ) + unprocessed . interfaces . len ( ) + unprocessed . types . len ( ) + unprocessed . unions . len ( ) , ) ; // step 2: add builtin scalars for & ( ref scalar , scalar_name ) in unprocessed :: Scalar :: iter ( ) { match data_map . insert ( String :: from ( scalar_name ) , unprocessed :: GsdlDataItem :: Builtin ( * scalar ) , ) { None => ( ) , Some ( gsdl_type ) => { panic ! ( format ( " " gsdl_type ) ) } } } let mut errors = vec ! [ ] ; // step 3: add enums let mut enums = Vec :: with_capacity ( unprocessed . enums . len ( ) ) ; for gsdl_enum in unprocessed . enums { let enum_name = gsdl_enum . name . to_owned ( ) ; let key = gsdl_enum . name . to_owned ( ) ; match data_map . insert ( key , unprocessed :: GsdlDataItem :: Enum ( gsdl_enum ) ) { None => ( ) , Some ( gsdl_type ) => errors . push ( format ! ( " " enum_name gsdl_type ) ) , } enums . push ( enum_name ) ; } enums . sort_unstable ( ) ; // step 4: add interfaces let mut interfaces = Vec :: with_capacity ( unprocessed . interfaces . len ( ) ) ; for interface in unprocessed . interfaces { let interface_name = interface . name . to_owned ( ) ; let key = interface . name . to_owned ( ) ; match data_map . insert ( key , unprocessed :: GsdlDataItem :: Interface ( interface ) ) { None => ( ) , Some ( gsdl_type ) => errors . push ( format ! ( " " interface_name gsdl_type ) ) , } interfaces . push ( interface_name ) ; } interfaces . sort_unstable ( ) ; // step 5: add types let mut types = Vec :: with_capacity ( unprocessed . types . len ( ) ) ; for gsdl_type in unprocessed . types { let type_name = gsdl_type . name . to_owned ( ) ; let key = gsdl_type . name . to_owned ( ) ; match data_map . insert ( key , unprocessed :: GsdlDataItem :: Type ( gsdl_type ) ) { None => ( ) , Some ( gsdl_type ) => errors . push ( format ! ( " " type_name gsdl_type ) ) , } ; types . push ( type_name ) ; } types . sort_unstable ( ) ; // step 6: add unions let mut unions = vec ! [ ] ; for union in unprocessed . unions { let union_name = union . name . to_owned ( ) ; let key = union . name . to_owned ( ) ; match data_map . insert ( key , unprocessed :: GsdlDataItem :: Union ( union ) ) { None => ( ) , Some ( gsdl_type ) => errors . push ( format ! ( " " union_name gsdl_type ) ) , } ; unions . push ( union_name ) ; } unions . sort_unstable ( ) ; // step 7: init scheme entry points let scheme = Scheme { query : match unprocessed . query { Some ( query ) => query , None => { errors . push ( String :: from ( " " ) ) ; String :: from ( " " ) } } , mutate : unprocessed . mutate , } ; if errors . is_empty ( ) { Ok ( Processed { data_map , enums , interfaces , scheme , types , unions , } ) } else { Err ( errors ) } }
internal function to build Processed with minimal checks
internal function to build Processed with minimal checks
unprocessed
Unprocessed