Struct wiggle_generate::config::ErrorConf

source ·

pub struct ErrorConf(_);

Expand description

Map from abi error type to rich error type

Implementations§

source §

impl ErrorConf

source

pub fn iter(&self) -> impl Iterator<Item = (&Ident, &ErrorConfField)>

Examples found in repository ?

src/codegen_settings.rs (line 51)

    pub fn new(conf: &ErrorConf, doc: &Document) -> Result<Self, Error> {
        let mut richtype_identifiers = HashMap::new();
        let m = conf.iter().map(|(ident, field)|
            match field {
                ErrorConfField::Trappable(field) => if let Some(abi_type) = doc.typename(&Id::new(ident.to_string())) {
                    Ok(ErrorType::Generated(TrappableErrorType { abi_type, rich_type: field.rich_error.clone() }))
                } else {
                    Err(anyhow!("No witx typename \"{}\" found", ident.to_string()))
                },
                ErrorConfField::User(field) => if let Some(abi_type) = doc.typename(&Id::new(ident.to_string())) {
                    if let Some(ident) = field.rich_error.get_ident() {
                        if let Some(prior_def) = richtype_identifiers.insert(ident.clone(), field.err_loc.clone())
                         {
                            return Err(anyhow!(
                                    "duplicate rich type identifier of {:?} not allowed. prior definition at {:?}",
                                    ident, prior_def
                                ));
                        }
                        Ok(ErrorType::User(UserErrorType {
                            abi_type,
                            rich_type: field.rich_error.clone(),
                            method_fragment: ident.to_string()
                        }))
                    } else {
                        return Err(anyhow!(
                            "rich error type must be identifier for now - TODO add ability to provide a corresponding identifier: {:?}",
                            field.err_loc
                        ))
                    }
                }
                else { Err(anyhow!("No witx typename \"{}\" found", ident.to_string())) }
            }
        ).collect::<Result<Vec<_>, Error>>()?;
        Ok(Self { m })
    }