Struct PgExtern

pub struct PgExtern { /* private fields */ }

A parsed #[pg_extern] item.

It should be used with syn::parse::Parse functions.

Using quote::ToTokens will output the declaration for a PgExternEntity.

use syn::{Macro, parse::Parse, parse_quote, parse};
use quote::{quote, ToTokens};
use pgx_utils::sql_entity_graph::PgExtern;

let parsed: PgExtern = parse_quote! {
    fn example(x: Option<str>) -> Option<&'a str> {
        unimplemented!()
    }
};
let sql_graph_entity_tokens = parsed.to_token_stream();

Implementations

impl PgExtern

pub fn new(attr: TokenStream2, item: TokenStream2) -> Result<Self, Error>

pub fn extern_attrs(&self) -> &[Attribute]

pub fn wrapper_func(&self) -> TokenStream2

Trait Implementations

impl Clone for PgExtern

fn clone(&self) -> PgExtern

Returns a duplicate of the value.

const fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for PgExtern

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Parse for PgExtern

fn parse(input: ParseStream<'_>) -> Result<Self, Error>

impl ToTokens for PgExtern

fn to_tokens(&self, tokens: &mut TokenStream2)

Write self to the given TokenStream.

fn to_token_stream(&self) -> TokenStream

Convert self directly into a TokenStream object.

fn into_token_stream(self) -> TokenStream

where Self: Sized,

Convert self directly into a TokenStream object.