Move formatted file writing to module
We will want to use this from other Rust-generating modules.
diff --git a/codegen/src/file.rs b/codegen/src/file.rs
new file mode 100644
index 0000000..fd1dd8a
--- /dev/null
+++ b/codegen/src/file.rs
@@ -0,0 +1,22 @@
+use proc_macro2::TokenStream;
+use rustfmt_nightly as rustfmt;
+use std::fs::File;
+use std::io::Write;
+
+pub fn write(path: &str, content: TokenStream) {
+ let mut file = File::create(path).unwrap();
+ write!(
+ file,
+ "// THIS FILE IS AUTOMATICALLY GENERATED; DO NOT EDIT\n\n"
+ )
+ .unwrap();
+ let mut config = rustfmt::Config::default();
+ config.set().emit_mode(rustfmt::EmitMode::Stdout);
+ config.set().verbose(rustfmt::Verbosity::Quiet);
+ config.set().format_macro_matchers(true);
+ config.set().normalize_doc_attributes(true);
+ let mut session = rustfmt::Session::new(config, Some(&mut file));
+ session
+ .format(rustfmt::Input::Text(content.to_string()))
+ .unwrap();
+}
diff --git a/codegen/src/gen.rs b/codegen/src/gen.rs
index 65ffb08..527662e 100644
--- a/codegen/src/gen.rs
+++ b/codegen/src/gen.rs
@@ -1,11 +1,7 @@
-use proc_macro2::TokenStream;
+use crate::file;
use quote::quote;
-use rustfmt_nightly as rustfmt;
use syn_codegen as types;
-use std::fs::File;
-use std::io::Write;
-
const FOLD_SRC: &str = "../src/gen/fold.rs";
const VISIT_SRC: &str = "../src/gen/visit.rs";
const VISIT_MUT_SRC: &str = "../src/gen/visit_mut.rs";
@@ -609,24 +605,6 @@
}
}
-fn write_file(path: &str, content: TokenStream) {
- let mut file = File::create(path).unwrap();
- write!(
- file,
- "// THIS FILE IS AUTOMATICALLY GENERATED; DO NOT EDIT\n\n"
- )
- .unwrap();
- let mut config = rustfmt::Config::default();
- config.set().emit_mode(rustfmt::EmitMode::Stdout);
- config.set().verbose(rustfmt::Verbosity::Quiet);
- config.set().format_macro_matchers(true);
- config.set().normalize_doc_attributes(true);
- let mut session = rustfmt::Session::new(config, Some(&mut file));
- session
- .format(rustfmt::Input::Text(content.to_string()))
- .unwrap();
-}
-
const TERMINAL_TYPES: &[&str] = &["Span", "Ident"];
pub fn generate(defs: &types::Definitions) {
@@ -668,7 +646,7 @@
let fold_trait = state.fold_trait;
let fold_impl = state.fold_impl;
- write_file(
+ file::write(
FOLD_SRC,
quote! {
// Unreachable code is generated sometimes without the full feature.
@@ -724,7 +702,7 @@
let visit_trait = state.visit_trait;
let visit_impl = state.visit_impl;
- write_file(
+ file::write(
VISIT_SRC,
quote! {
#![cfg_attr(feature = "cargo-clippy", allow(trivially_copy_pass_by_ref))]
@@ -756,7 +734,7 @@
let visit_mut_trait = state.visit_mut_trait;
let visit_mut_impl = state.visit_mut_impl;
- write_file(
+ file::write(
VISIT_MUT_SRC,
quote! {
use *;
diff --git a/codegen/src/main.rs b/codegen/src/main.rs
index d29a28c..01c3ec0 100644
--- a/codegen/src/main.rs
+++ b/codegen/src/main.rs
@@ -12,6 +12,7 @@
#![recursion_limit = "128"]
#![allow(clippy::needless_pass_by_value)]
+mod file;
mod gen;
mod json;
mod parse;