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Add #[cfg] support in submodules

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This commit is contained in:
J Henry Waugh 2020-08-21 23:05:18 -05:00
parent 382e60e91a
commit 55870e7b37
4 changed files with 141 additions and 17 deletions
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107
codegen/src/module.rs
View File

@ -11,6 +11,8 @@ use std::vec as new_vec;
#[cfg(no_std)]
use core::mem;
#[cfg(not(no_std))]
use std::mem;
use std::borrow::Cow;
use std::collections::HashMap;
@ -282,6 +284,10 @@ impl Parse for Module {
}
impl Module {
pub fn attrs(&self) -> Option<&Vec<syn::Attribute>> {
self.mod_all.as_ref().map(|m| &m.attrs)
}
pub fn module_name(&self) -> Option<&syn::Ident> {
self.mod_all.as_ref().map(|m| &m.ident)
}
@ -324,8 +330,10 @@ impl Module {
let mut mod_all = mod_all.unwrap();
let mod_name = mod_all.ident.clone();
let (_, orig_content) = mod_all.content.take().unwrap();
let mod_attrs = mem::replace(&mut mod_all.attrs, Vec::with_capacity(0));
Ok(quote! {
#(#mod_attrs)*
pub mod #mod_name {
#(#orig_content)*
#(#inner_modules)*
@ -1112,7 +1120,82 @@ mod generate_tests {
#[allow(unused_mut)]
pub fn rhai_module_generate() -> Module {
let mut m = Module::new();
m.set_sub_module("it_is", self::it_is::rhai_module_generate());
{ m.set_sub_module("it_is", self::it_is::rhai_module_generate()); }
m
}
}
};
let item_mod = syn::parse2::<Module>(input_tokens).unwrap();
assert_streams_eq(item_mod.generate(), expected_tokens);
}
#[test]
fn one_fn_with_cfg_module() {
let input_tokens: TokenStream = quote! {
pub mod one_fn {
#[cfg(not(feature = "no_float"))]
pub mod it_is {
pub fn increment(x: &mut FLOAT) {
*x += 1.0 as FLOAT;
}
}
}
};
let expected_tokens = quote! {
pub mod one_fn {
#[cfg(not(feature = "no_float"))]
pub mod it_is {
pub fn increment(x: &mut FLOAT) {
*x += 1.0 as FLOAT;
}
#[allow(unused_imports)]
use super::*;
#[allow(unused_mut)]
pub fn rhai_module_generate() -> Module {
let mut m = Module::new();
m.set_fn("increment", FnAccess::Public,
&[core::any::TypeId::of::<FLOAT>()],
CallableFunction::from_plugin(increment_token()));
m
}
#[allow(non_camel_case_types)]
struct increment_token();
impl PluginFunction for increment_token {
fn call(&self,
args: &mut [&mut Dynamic], pos: Position
) -> Result<Dynamic, Box<EvalAltResult>> {
debug_assert_eq!(args.len(), 1usize,
"wrong arg count: {} != {}", args.len(), 1usize);
let arg0: &mut _ = &mut args[0usize].write_lock::<FLOAT>().unwrap();
Ok(Dynamic::from(increment(arg0)))
}
fn is_method_call(&self) -> bool { true }
fn is_varadic(&self) -> bool { false }
fn clone_boxed(&self) -> Box<dyn PluginFunction> {
Box::new(increment_token())
}
fn input_types(&self) -> Box<[TypeId]> {
new_vec![TypeId::of::<FLOAT>()].into_boxed_slice()
}
}
pub fn increment_token_callable() -> CallableFunction {
CallableFunction::from_plugin(increment_token())
}
pub fn increment_token_input_types() -> Box<[TypeId]> {
increment_token().input_types()
}
}
#[allow(unused_imports)]
use super::*;
#[allow(unused_mut)]
pub fn rhai_module_generate() -> Module {
let mut m = Module::new();
#[cfg(not(feature = "no_float"))] {
m.set_sub_module("it_is", self::it_is::rhai_module_generate());
}
m
}
}
@ -1150,7 +1233,7 @@ mod generate_tests {
#[allow(unused_mut)]
pub fn rhai_module_generate() -> Module {
let mut m = Module::new();
m.set_sub_module("it_is", self::it_is::rhai_module_generate());
{ m.set_sub_module("it_is", self::it_is::rhai_module_generate()); }
m
}
}
@ -1202,8 +1285,8 @@ mod generate_tests {
#[allow(unused_mut)]
pub fn rhai_module_generate() -> Module {
let mut m = Module::new();
m.set_sub_module("first_is", self::first_is::rhai_module_generate());
m.set_sub_module("second_is", self::second_is::rhai_module_generate());
{ m.set_sub_module("first_is", self::first_is::rhai_module_generate()); }
{ m.set_sub_module("second_is", self::second_is::rhai_module_generate()); }
m
}
}
@ -1280,8 +1363,8 @@ mod generate_tests {
pub fn rhai_module_generate() -> Module {
let mut m = Module::new();
m.set_var("VALUE", 17);
m.set_sub_module("left", self::left::rhai_module_generate());
m.set_sub_module("right", self::right::rhai_module_generate());
{ m.set_sub_module("left", self::left::rhai_module_generate()); }
{ m.set_sub_module("right", self::right::rhai_module_generate()); }
m
}
}
@ -1302,8 +1385,8 @@ mod generate_tests {
pub fn rhai_module_generate() -> Module {
let mut m = Module::new();
m.set_var("VALUE", 19);
m.set_sub_module("left", self::left::rhai_module_generate());
m.set_sub_module("right", self::right::rhai_module_generate());
{ m.set_sub_module("left", self::left::rhai_module_generate()); }
{ m.set_sub_module("right", self::right::rhai_module_generate()); }
m
}
}
@ -1337,8 +1420,8 @@ mod generate_tests {
pub fn rhai_module_generate() -> Module {
let mut m = Module::new();
m.set_var("VALUE", 36);
m.set_sub_module("left", self::left::rhai_module_generate());
m.set_sub_module("right", self::right::rhai_module_generate());
{ m.set_sub_module("left", self::left::rhai_module_generate()); }
{ m.set_sub_module("right", self::right::rhai_module_generate()); }
m
}
}
@ -1348,8 +1431,8 @@ mod generate_tests {
pub fn rhai_module_generate() -> Module {
let mut m = Module::new();
m.set_var("VALUE", 100);
m.set_sub_module("left", self::left::rhai_module_generate());
m.set_sub_module("right", self::right::rhai_module_generate());
{ m.set_sub_module("left", self::left::rhai_module_generate()); }
{ m.set_sub_module("right", self::right::rhai_module_generate()); }
m
}
}

17
codegen/src/rhai_module.rs
View File

@ -12,7 +12,7 @@ pub(crate) fn generate_body(
) -> proc_macro2::TokenStream {
let mut set_fn_stmts: Vec<syn::Stmt> = Vec::new();
let mut set_const_stmts: Vec<syn::Stmt> = Vec::new();
let mut add_mod_stmts: Vec<syn::Stmt> = Vec::new();
let mut add_mod_blocks: Vec<syn::ExprBlock> = Vec::new();
let str_type_path = syn::parse2::<syn::Path>(quote! { str }).unwrap();
for (const_name, const_expr) in consts {
@ -32,9 +32,16 @@ pub(crate) fn generate_body(
} else {
syn::LitStr::new(&module_name.to_string(), proc_macro2::Span::call_site())
};
add_mod_stmts.push(
syn::parse2::<syn::Stmt>(quote! {
m.set_sub_module(#exported_name, self::#module_name::rhai_module_generate());
let cfg_attrs: Vec<&syn::Attribute> = itemmod.attrs().unwrap().iter().filter(|&a| {
a.path.get_ident()
.map(|i| i.to_string() == "cfg")
.unwrap_or(false)
}).collect();
add_mod_blocks.push(
syn::parse2::<syn::ExprBlock>(quote! {
#(#cfg_attrs)* {
m.set_sub_module(#exported_name, self::#module_name::rhai_module_generate());
}
})
.unwrap(),
);
@ -117,7 +124,7 @@ pub(crate) fn generate_body(
let mut m = Module::new();
#(#set_fn_stmts)*
#(#set_const_stmts)*
#(#add_mod_stmts)*
#(#add_mod_blocks)*
m
}
}

29
codegen/ui_tests/rhai_mod_inner_cfg_false.rs Normal file
View File

@ -0,0 +1,29 @@
use rhai::plugin::*;
#[derive(Clone)]
pub struct Point {
x: f32,
y: f32,
}
#[export_module]
pub mod test_module {
#[cfg(feature = "unset_feature")]
pub mod test_mod {
pub fn test_fn(input: Point) -> bool {
input.x > input.y
}
}
}
fn main() {
let n = Point {
x: 0.0,
y: 10.0,
};
if test_module::test_mod::test_fn(n) {
println!("yes");
} else {
println!("no");
}
}

5
codegen/ui_tests/rhai_mod_inner_cfg_false.stderr Normal file
View File

@ -0,0 +1,5 @@
error[E0433]: failed to resolve: could not find `test_mod` in `test_module`
--> $DIR/rhai_mod_inner_cfg_false.rs:24:21
|
24 | if test_module::test_mod::test_fn(n) {
| ^^^^^^^^ could not find `test_mod` in `test_module`