Struct Builder 

pub struct Builder { /* private fields */ }

Incrementally validates commands and layer grammar before producing a display list. Discard the builder after an error; prior structural charges are not rolled back.

Implementations

impl Builder

pub fn new( size: PixelSize, limits: ValidationLimits, ) -> Result<Self, ValidationError>

Creates an empty list with checked output dimensions and structural limits.

pub fn push( &mut self, command: DrawCommand, path: &str, ) -> Result<(), ValidationError>

Validates and charges a command at the supplied diagnostic path before storing it.

pub fn finish(self) -> Result<DisplayList, ValidationError>

Returns the list only when every layer and mask scope has been closed.

pub fn finish_validated(self) -> Result<ValidatedDisplayList, ValidationError>

Freezes already checked commands without repeating structural traversal.