Struct NodeRegistration 

pub struct NodeRegistration {
    pub signatures: fn() -> &'static [FuncSig],
    pub build: NodeBuildFn,
    pub validate: Option<NodeValidator>,
}

A node module’s registration: signatures + builder.

Each node module submits one of these at link time via inventory::submit!. The runtime collects all submissions to build the function registry and dispatch table without any explicit module list.

Fields

signatures: fn() -> &'static [FuncSig]

Returns the static slice of FuncSig entries for this module.

build: NodeBuildFn

Attempts to build a node for the given function name.

Returns None if the name is not handled by this module, or Some(Ok(node)) / Some(Err(msg)) if it is.

wire_types[i] is the resolved crate::ast::PortType of wires[i] — the output type of the upstream node feeding that wire input. Modules that build type-polymorphic nodes (e.g. log_info, whose output type equals its input type) read this to construct the node with the correct port types. Modules whose nodes have type-fixed signatures can ignore the slice. When the assembler can’t resolve a wire’s type (forward reference, dangling), the slot defaults to crate::ast::PortType::U64.

validate: Option<NodeValidator>

Optional assembly-time validator for this module’s constants.

The factory calls this before build whenever the name matches one of this module’s functions. Returning Err makes the compile fail with a structured bad constant error, so the node itself never sees a malformed literal and can keep its constructor and eval() branch-free. See SRD 15 §“Const Constraint Metadata” for the contract.

Trait Implementations

impl Collect for NodeRegistration