Trait rustc_graphviz::Labeller
source · pub trait Labeller<'a> {
type Node;
type Edge;
// Required methods
fn graph_id(&'a self) -> Id<'a>;
fn node_id(&'a self, n: &Self::Node) -> Id<'a>;
// Provided methods
fn node_shape(&'a self, _node: &Self::Node) -> Option<LabelText<'a>> { ... }
fn node_label(&'a self, n: &Self::Node) -> LabelText<'a> { ... }
fn edge_label(&'a self, _e: &Self::Edge) -> LabelText<'a> { ... }
fn node_style(&'a self, _n: &Self::Node) -> Style { ... }
fn edge_style(&'a self, _e: &Self::Edge) -> Style { ... }
}
Expand description
Each instance of a type that implements Label<C>
maps to a
unique identifier with respect to C
, which is used to identify
it in the generated .dot file. They can also provide more
elaborate (and non-unique) label text that is used in the graphviz
rendered output.
The graph instance is responsible for providing the DOT compatible
identifiers for the nodes and (optionally) rendered labels for the nodes and
edges, as well as an identifier for the graph itself.
Required Associated Types§
Required Methods§
Provided Methods§
sourcefn node_shape(&'a self, _node: &Self::Node) -> Option<LabelText<'a>>
fn node_shape(&'a self, _node: &Self::Node) -> Option<LabelText<'a>>
Maps n
to one of the graphviz shape
names. If None
is returned, no shape
attribute is specified.
sourcefn node_label(&'a self, n: &Self::Node) -> LabelText<'a>
fn node_label(&'a self, n: &Self::Node) -> LabelText<'a>
Maps n
to a label that will be used in the rendered output.
The label need not be unique, and may be the empty string; the
default is just the output from node_id
.
sourcefn edge_label(&'a self, _e: &Self::Edge) -> LabelText<'a>
fn edge_label(&'a self, _e: &Self::Edge) -> LabelText<'a>
Maps e
to a label that will be used in the rendered output.
The label need not be unique, and may be the empty string; the
default is in fact the empty string.
sourcefn node_style(&'a self, _n: &Self::Node) -> Style
fn node_style(&'a self, _n: &Self::Node) -> Style
Maps n
to a style that will be used in the rendered output.
sourcefn edge_style(&'a self, _e: &Self::Edge) -> Style
fn edge_style(&'a self, _e: &Self::Edge) -> Style
Maps e
to a style that will be used in the rendered output.