Struct FieldsDecl 

pub struct FieldsDecl { /* private fields */ }

A value-form expansion: the accessor whose returned struct supplies the fields, plus the per-field adjustments. Built with fields! and handed to ExpandReturnDecl::fields.

Both adjusters key on the Rust struct field name, mirroring FunctionDecl::expand_param’s Rust-parameter-name key: an unknown field name or a repeated one is a hard error, so a field renamed upstream is caught rather than silently ignored.

Implementations

impl FieldsDecl

pub fn new(func: Ident) -> Self

pub fn func(&self) -> &Ident

The value-form accessor’s ident, as declared with fields!.

pub fn overrides(&self) -> &[(String, ExpandReturnDecl)]

The per-field decomposition overrides, in declaration order.

pub fn names(&self) -> &[(String, String)]

The per-field name overrides, in declaration order.

pub fn is_consuming(&self) -> bool

Whether the accessor consumes its receiver (set by ExpandReturnDecl::fields_self_into). Named is_consuming rather than consuming — that name is already the crate-internal builder method that sets the flag.

pub fn field(self, field: impl AsRef<str>, decl: ExpandReturnDecl) -> Self

Replace one field’s decomposition, with the same ExpandReturnDecl a type-level default uses — so the complete-set rule applies here too: the decl states that field’s entire leaf set. Use it where the field’s type default is not what this boundary wants (a lone .field_self() keeps the raw handle instead of decomposing it).

An override declaring no records states an empty leaf set: the field does not cross. That is the one way to drop a field a value form carries, and it follows from the complete-set rule rather than adding a rule — a boundary that wants none of a field’s leaves says so the same way it says it wants some of them. (A generator-level expand_return!(T) with no records is still an error: a type has to cross somehow.) Use it for a field the binding has no surface for — diagnostics a consumer never reads, a type whose accessors would drag in a subtree nothing asks for:

prebindgen_registry::expand_return!(Sample).fields_self_into(
    prebindgen_registry::fields!(sample_into_struct)
        .field("timestamp_stack", prebindgen_registry::expand_return!(TimestampStack)),
);

pub fn name( self, field: impl AsRef<str>, kotlin_name: impl Into<String>, ) -> Self

Rename one field’s leaf, overriding the name derived from the struct field ident. The literal Kotlin name, like fun!(f).name(...).

Trait Implementations

impl Clone for FieldsDecl

fn clone(&self) -> FieldsDecl

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.