Enum GraphError 

pub enum GraphError {
    UnknownNode(usize),
    UnknownPort {
        owner: String,
        direction: &'static str,
        index: usize,
    },
    TooManyChannels {
        name: String,
        channels: u8,
    },
    SchemaMismatch {
        from: String,
        to: String,
        output: SchemaId,
        input: SchemaId,
    },
    Requirement {
        from: String,
        to: String,
        key: &'static str,
        requirement: String,
        found: String,
    },
    AlreadyConnected {
        to: String,
    },
    Unconnected {
        to: String,
    },
    Cycle {
        node: String,
    },
    TimeDomain {
        node: String,
        first: String,
        second: String,
    },
    DuplicateExposure(String),
    UnknownPortName {
        owner: String,
        direction: &'static str,
        name: String,
    },
}

Why a graph cannot be built as asked.

Variants

UnknownNode(usize)

A port reference names a node the graph does not have.

UnknownPort

A port reference names a port its owner does not declare.

Fields

owner: String

The source or node.

direction: &'static str

input or output.

index: usize

The port index.

TooManyChannels

A source has more channels than a block can hold.

Fields

name: String

The source.

channels: u8

Its channels.

SchemaMismatch

The output and the input do not carry the same schema.

Fields

from: String

The output port.

to: String

The input port.

output: SchemaId

The output’s schema.

input: SchemaId

The input’s schema.

Requirement

The output does not satisfy a requirement of the input.

Fields

from: String

The output port.

to: String

The input port.

key: &'static str

The property.

requirement: String

What the input requires.

found: String

What the output declares, or nothing.

AlreadyConnected

The input is already connected; an input reads one output.

Fields

to: String

The input port.

Unconnected

The input is not connected.

Fields

to: String

The input port.

Cycle

The graph has a cycle through this node.

Fields

node: String

The node.

TimeDomain

The node reads inputs from different sources.

Fields

node: String

The node.

first: String

A source it reads.

second: String

Another source it reads.

DuplicateExposure(String)

Two exposed outputs share a name.

UnknownPortName

A port named at run time does not exist.

Fields

owner: String

The source or node.

direction: &'static str

input or output.

name: String

The name asked for.

Trait Implementations

impl Clone for GraphError

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for GraphError

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

Formats the value using the given formatter.

impl Display for GraphError

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

Formats the value using the given formatter.

impl Eq for GraphError

impl Error for GraphError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl PartialEq for GraphError

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for GraphError