InstructionArgumentNode.md

InstructionArgumentNode

This node defines an argument that is passed to an instruction. When all arguments are combined and serialized next to each other, they form the instruction's data.

Attributes

Data

Attribute	Type	Description
kind	"instructionArgumentNode"	The node discriminator.
name	CamelCaseString	The name of the instruction argument.
docs	string[]	Markdown documentation for the instruction argument.
defaultValueStrategy	"optional" | "omitted"	(Optional) The strategy to use when a default value is provided for the argument. "optional" means that the argument's default value may be overriden by a provided argument, while "omitted" means that no argument should be provided and the default value should always be the argument's value. Defaults to "optional".

Children

Attribute	Type	Description
type	TypeNode	The TypeNode that describes the argument's data.
defaultValue	InstructionInputValueNode	(Optional) A default value for the argument should this argument not be provided when constructing the instruction.

Functions

instructionArgumentNode(input)

Helper function that creates a InstructionArgumentNode object from an input object.

const node = instructionArgumentNode({
    name: 'amount',
    type: numberTypeNode('u64'),
    docs: ['This amount of tokens to transfer.'],
});

Examples

An argument with a default value

instructionArgumentNode({
    name: 'amount',
    type: numberTypeNode('u64'),
    defaultValue: numberValueNode(0),
});

An argument with an omitted default value

instructionArgumentNode({
    name: 'instructionDiscriminator',
    type: numberTypeNode('u8'),
    defaultValue: numberValueNode(42),
    defaultValueStrategy: 'omitted',
});