Struct BodySource 

pub struct BodySource { /* private fields */ }

A traversal body as its parent compiled it: the child file and the compiler settings the parent used, so the same body compiles on any engine, once, keyed by the engine as the interpreter’s program is keyed by the body’s position (for_traversal.md §5.1).

Implementations

impl BodySource

pub fn source_text(&self) -> &str

The body’s source as the parent lowered it: the implicit cycle input, one extern per element and per cascaded wire, then the body’s statements.

pub fn program_on( &self, engine: Engine, ) -> Result<Arc<dyn KernelProgram>, KernelError>

The body’s program on engine, compiled on the first call for that engine and shared by every use after it.

One body, one carrier. A for body and a tile’s projection body are the same thing — a statement list compiled once per engine against the settings the parent compiled under — and they reach it through here, so a tile body renders on the engine of the kernel rendering it (polytile.md §7.2).

pub fn from_source(source: &str, context_label: &str) -> Result<Self, String>

A body from its source text, under the default settings.

The route for a body that reaches the runtime as text rather than from the compiler that lowered it — a tile skeleton’s projection body, which travels in the tile_render node’s serialized spec. context_label names it in a diagnostic. The body is a tree of its own, with a fresh compile ledger and resource scope.

Trait Implementations

impl Debug for BodySource

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.