Struct protobuf::reflect::FieldDescriptor
source · [−]pub struct FieldDescriptor { /* private fields */ }Expand description
Field descriptor.
Can be used for runtime reflection.
Implementations
sourceimpl FieldDescriptor
impl FieldDescriptor
sourcepub fn proto(&self) -> &'static FieldDescriptorProto
pub fn proto(&self) -> &'static FieldDescriptorProto
Get .proto description of field
sourcepub fn is_repeated(&self) -> bool
pub fn is_repeated(&self) -> bool
If this field repeated?
sourcepub fn has_field(&self, m: &dyn Message) -> bool
pub fn has_field(&self, m: &dyn Message) -> bool
Check if field is set in given message.
For repeated field or map field return true if
collection is not empty.
Panics
If this field belongs to a different message type.
sourcepub fn len_field(&self, m: &dyn Message) -> usize
pub fn len_field(&self, m: &dyn Message) -> usize
Return length of repeated field.
For singualar field return 1 if field is set and 0 otherwise.
Panics
If this field belongs to a different message type.
sourcepub fn get_message<'a>(&self, m: &'a dyn Message) -> &'a dyn Message
pub fn get_message<'a>(&self, m: &'a dyn Message) -> &'a dyn Message
Get message field or default instance if field is unset.
Panics
If this field belongs to a different message type or field type is not message.
sourcepub fn get_enum(&self, m: &dyn Message) -> &'static EnumValueDescriptor
pub fn get_enum(&self, m: &dyn Message) -> &'static EnumValueDescriptor
Get enum field.
Panics
If this field belongs to a different message type
or field type is not singular enum.
sourcepub fn get_str<'a>(&self, m: &'a dyn Message) -> &'a str
pub fn get_str<'a>(&self, m: &'a dyn Message) -> &'a str
Get string field.
Panics
If this field belongs to a different message type
or field type is not singular string.
sourcepub fn get_bytes<'a>(&self, m: &'a dyn Message) -> &'a [u8]ⓘNotable traits for &'_ mut [u8]impl<'_> Write for &'_ mut [u8]impl<'_> Read for &'_ [u8]
pub fn get_bytes<'a>(&self, m: &'a dyn Message) -> &'a [u8]ⓘNotable traits for &'_ mut [u8]impl<'_> Write for &'_ mut [u8]impl<'_> Read for &'_ [u8]
Get bytes field.
Panics
If this field belongs to a different message type
or field type is not singular bytes.
sourcepub fn get_u32(&self, m: &dyn Message) -> u32
pub fn get_u32(&self, m: &dyn Message) -> u32
Get u32 field.
Panics
If this field belongs to a different message type
or field type is not singular u32.
sourcepub fn get_u64(&self, m: &dyn Message) -> u64
pub fn get_u64(&self, m: &dyn Message) -> u64
Get u64 field.
Panics
If this field belongs to a different message type
or field type is not singular u64.
sourcepub fn get_i32(&self, m: &dyn Message) -> i32
pub fn get_i32(&self, m: &dyn Message) -> i32
Get i32 field.
Panics
If this field belongs to a different message type
or field type is not singular i32.
sourcepub fn get_i64(&self, m: &dyn Message) -> i64
pub fn get_i64(&self, m: &dyn Message) -> i64
Get i64 field.
Panics
If this field belongs to a different message type
or field type is not singular i64.
sourcepub fn get_bool(&self, m: &dyn Message) -> bool
pub fn get_bool(&self, m: &dyn Message) -> bool
Get bool field.
Panics
If this field belongs to a different message type or
field type is not singular bool.
sourcepub fn get_f32(&self, m: &dyn Message) -> f32
pub fn get_f32(&self, m: &dyn Message) -> f32
Get float field.
Panics
If this field belongs to a different message type or
field type is not singular float.
sourcepub fn get_f64(&self, m: &dyn Message) -> f64
pub fn get_f64(&self, m: &dyn Message) -> f64
Get double field.
Panics
If this field belongs to a different message type
or field type is not singular double.
sourcepub fn get_reflect<'a>(&self, m: &'a dyn Message) -> ReflectFieldRef<'a>
pub fn get_reflect<'a>(&self, m: &'a dyn Message) -> ReflectFieldRef<'a>
Auto Trait Implementations
impl !RefUnwindSafe for FieldDescriptor
impl !Send for FieldDescriptor
impl Sync for FieldDescriptor
impl Unpin for FieldDescriptor
impl !UnwindSafe for FieldDescriptor
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcepub fn borrow_mut(&mut self) -> &mut T
pub fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more