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use crate::gen::inside::protobuf_crate_path;
use crate::gen::rust_types_values::RustType;
use crate::Customize;
/// Optional fields can be stored are `Option<T>` or `SingularPtrField<T>`.
#[derive(Copy, Clone, Eq, PartialEq)]
pub enum OptionKind {
/// Field is `Option<T>`
Option,
/// Field is `SingularPtrField<T>`
MessageField,
}
impl OptionKind {
pub(crate) fn wrap_element(&self, element_type: RustType) -> RustType {
let element_type = Box::new(element_type);
match self {
OptionKind::Option => RustType::Option(element_type),
OptionKind::MessageField => RustType::MessageField(element_type),
}
}
// Type of `as_ref()` operation
pub(crate) fn as_ref_type(&self, element_type: RustType) -> RustType {
match self {
OptionKind::Option => RustType::Option(Box::new(element_type.ref_type())),
OptionKind::MessageField => RustType::MessageField(Box::new(element_type.ref_type())),
}
}
fn _as_option_ref(&self, v: &str) -> String {
match self {
OptionKind::Option | OptionKind::MessageField => format!("{}.as_ref()", v),
}
}
pub(crate) fn unwrap_or_else(&self, what: &str, default_value: &str) -> String {
match self {
_ => format!("{}.unwrap_or_else(|| {})", what, default_value),
}
}
pub(crate) fn unwrap_ref_or_else(&self, what: &str, default_value: &str) -> String {
match self {
_ => format!("{}.unwrap_or_else(|| {})", what, default_value),
}
}
pub(crate) fn wrap_value(&self, value: &str, customize: &Customize) -> String {
match self {
OptionKind::Option => format!("::std::option::Option::Some({})", value),
OptionKind::MessageField => format!(
"{}::MessageField::some({})",
protobuf_crate_path(customize),
value
),
}
}
}
|
