rust_writer_proc 1.0.2

This crate is useful for editing a Rust file from Rust code
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51

// SPDX-License-Identifier: GPL-3.0

use rust_writer::ast::{
	finder::{Finder, ToFind},
	implementors::{ItemToFile, ItemToImpl},
	mutator::{Mutator, ToMutate},
};
use rust_writer_proc::{finder, mutator};
use syn::{parse_quote, visit_mut::VisitMut, ImplItem};
use test_builder::TestBuilder;

#[mutator(ItemToFile, ItemToImpl<'a>)]
#[finder(ItemToFile, ItemToImpl<'a>)]
#[impl_from]
struct SomeStruct;

#[test]
fn modified_unit_struct() {
	TestBuilder::default().with_trait_and_impl_block_ast().execute(|mut builder| {
		let item_to_file = ItemToFile {
			item: parse_quote!(
				use std::path::Path;
			),
		};

		let item_to_impl: ItemToImpl = (
			Some("SomeTrait"),
			"SomeImplementor",
			ImplItem::Fn(parse_quote! {
			fn other_func(&self) -> bool{
						false
					 }
			  }),
		)
			.into();

		let some_struct: SomeStruct = (item_to_file, item_to_impl).into();

		let ast = builder.get_mut_ast_file("trait_and_impl_block.rs").expect("This should exist");

		let mut finder: SomeStructFinderWrapper = Finder::default().to_find(&some_struct).into();
		assert!(!finder.find(ast, None));

		let mut mutator: SomeStructMutatorWrapper =
			Mutator::default().to_mutate(&some_struct).into();
		assert!(mutator.mutate(ast, None).is_ok());

		let mut finder: SomeStructFinderWrapper = Finder::default().to_find(&some_struct).into();
		assert!(finder.find(ast, None));
	});
}