Crate macro_tools

Tools for writing procedural macroses.

Module :: macro_tools

Tools for writing procedural macroses.

Sample

use macro_tools::*;
use macro_tools::dependencies::*;
use quote::quote;

fn main()
{
  let code = quote!( core::option::Option< i8, i16, i32, i64 > );
  let tree_type = syn::parse2::< syn::Type >( code ).unwrap();
  let got = type_parameters( &tree_type, 0..=2 );
  got.iter().for_each( | e | println!( "{}", quote!( #e ) ) );
  // < i8
  // < i16
  // < i32
}

To add to your project

cargo add macro_tools

Modules

dependencies

Dependencies of the module.

exposed

Exposed namespace of the module.

helper

Helpers.

name

Trait name.

prelude

Prelude to use: use wtools::prelude::*.

split_with_name

Split with name.

Macros

_syn_err

Macro to generate syn error either with span of a syntax tree element or with default one proc_macro2::Span::call_site().

_tree_export_str

Macro for diagnostics purpose to export both syntax tree and source code behind it into string.

_tree_print

Macro for diagnostics purpose to print both syntax tree and source code behind it.

parse_quote

Quasi-quotation macro that accepts input like the quote! macro but uses type inference to figure out a return type for those tokens.

quote

syn_err

Macro to generate syn error either with span of a syntax tree element or with default one proc_macro2::Span::call_site().

tree_export_str

Macro for diagnostics purpose to export both syntax tree and source code behind it into string.

tree_print

Macro for diagnostics purpose to print both syntax tree and source code behind it.

Structs

Items

Many items.

Enums

ContainerKind

Kind of container.

Traits

Name

Trait to get name of an syntax element.

Functions

attr_pair_single

For attribute like #[former( default = 31 )] return key default and value 31, as well as syn::Meta as the last element of result tuple.

type_container_kind

Return kind of container specified by type.

type_optional_container_kind

Return kind of container specified by type. Unlike type_container_kind it also understand optional types.

type_parameters

Return the specified number of parameters of the type.

type_rightmost

Check is the rightmost item of path refering a type is specified type.

Type Definitions

Result

Result with syn::Error.