Crate limbo_ext

Macros

register_extension

Register your extension with ‘core’ by providing the relevant functions

Structs

AggCtx

ExtensionApi

VTabImpl

VTabModuleImpl

Value

Enums

ResultCode

Error type is of type ExtError which can be either a user defined error or an error code

ValueType

Traits

AggFunc

Scalar

VTabCursor

VTabModule

Type Aliases

ExtensionEntryPoint

FinalizeFunction

InitAggFunction

ScalarFunction

StepFunction

VtabFnColumn

VtabFnConnect

VtabFnEof

VtabFnFilter

VtabFnNext

VtabFnOpen

Attribute Macros

scalar

Declare a scalar function for your extension. This requires the name: #[scalar(name = “example”)] of what you wish to call your function with. Your function must use the signature: fn (args: &[Value]) -> Value with proper spelling.

Derive Macros

AggregateDerive

Define an aggregate function for your extension by deriving AggregateDerive on a struct that implements the AggFunc trait.

VTabModuleDerive

Macro to derive a VTabModule for your extension. This macro will generate the necessary functions to register your module with core. You must implement the VTabModule trait for your struct, and the VTabCursor trait for your cursor.