Enum SourceDecl 

pub enum SourceDecl {
    Brush(FileSource),
    Image(FileSource),
    Mvt(MvtSource),
    Pmtiles(PmtilesSource),
    Dem(DemSource),
    Raster(RasterSource),
    GeoJson(GeoJsonSource),
    Sprite(SpriteSource),
    Font(FontSource),
    Glyphs(GlyphsSource),
}

Declaration of one external data source. Mixes document-scoped resources (brush, image, sprite, font) — resolved once per style from a file path or http(s):// URL — and tile-scoped pyramids (mvt, pmtiles, dem) — fetched per tile via a URL template.

The legacy mask-image / gradient kinds from 0.2 are gone: mask-image was indistinguishable from image at runtime (host decoded both as RGBA8), so callers compose image → pick-channel a to get a single-channel mask; gradient was never wired up and the gradient-* node family covers that use case directly.

Binding conventions in the host’s TileLoader:

• Document-scoped: looked up by the source name (referenced in node fields as @source-name).
• dem binds a stitched ScalarField under tile.<source-name>.
• mvt and pmtiles bind every layer of the decoded vector tile under tile.<layer-name> (i.e. by the layer’s name inside the tile, not the source key — built-in styles reference layers like tile.water / tile.roads).

Variants

Brush(FileSource)

Image(FileSource)

Mvt(MvtSource)

Pmtiles(PmtilesSource)

Dem(DemSource)

Raster(RasterSource)

GeoJson(GeoJsonSource)

Sprite(SpriteSource)

Font(FontSource)

Glyphs(GlyphsSource)

Implementations

impl SourceDecl

pub fn attribution(&self) -> &Option<String>

The source’s declared attribution, if any.

Trait Implementations

impl Clone for SourceDecl

fn clone(&self) -> SourceDecl

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SourceDecl

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for SourceDecl

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.