Crate mz_expr_derive_impl 

Implementations of proc macros to derive SQL function traits.

This is separate from the actual proc macro to allow exporting the function defining the proc macro itself. Proc macro crates cannot export anything but proc macros.

Modules

generate 🔒

Codegen shared by every scalar function arity.

modifiers 🔒

The #[sqlfunc] attribute’s key-value modifiers.

shape 🔒

Per-arity descriptions of the three scalar function shapes.

signature 🔒

Analysis of a #[sqlfunc]-annotated function’s signature.

source 🔒

Source text the scalar function registry records for each #[sqlfunc].

sqlfunc 🔒

The #[sqlfunc] attribute macro’s entry point.

Functions

sqlfunc

Implementation for the #[sqlfunc] macro. The first parameter is the attribute arguments, the second is the function body. The third parameter indicates whether to include the test function in the output.

test_sqlfunc

Expands #[sqlfunc(attr)] on item and returns the formatted expansion, or the formatted errors, along with the formatted input.

test_sqlfunc_str

test_sqlfunc over source text, as the generated snapshot tests pass it.