Chapter 417: FunctionOverloadingNode

Core Idea

This class allows to define multiple overloaded versions of the same function. Depending on the parameters of the function call, the node picks the best-fit overloaded version.

Key Concepts

• functionNodes : Array.<function()>: Array of Fn function definitions.
• global : boolean: This node is marked as global.
• parametersNodes : Array.<Node>: A list of parameter nodes.

Reference Tables

Constructor

Signature
new FunctionOverloadingNode( functionNodes : Array.<function()>, …parametersNodes : Node )

Properties

Property	Description
.functionNodes : Array.<function()>	Array of Fn function definitions.
.global : boolean	This node is marked as global.
.parametersNodes : Array.<Node>	A list of parameter nodes.

Methods

Method	Description
.generateNodeType( builder : NodeBuilder ) : string	This method is overwritten since the node type is inferred from the function's return type.
.getCandidateFn( builder : NodeBuilder ) : FunctionNode	Returns the candidate function for the current parameters.
.setup( builder : NodeBuilder ) : Node	Sets up the node for the current parameters.

Key Takeaways

1. FunctionOverloadingNode extends: EventDispatcher → Node
2. Most relevant properties: functionNodes, global, parametersNodes.
3. Key methods: generateNodeType, getCandidateFn, setup.

Connects To

• EventDispatcher: parent class
• Node: parent class
• Source: src/nodes/utils/FunctionOverloadingNode.js