43 lines
1.4 KiB
Rust
43 lines
1.4 KiB
Rust
|
// Copyright 2012-2015 The Rust Project Developers. See the COPYRIGHT
|
||
|
|
// file at the top-level directory of this distribution and at
|
||
|
|
// http://rust-lang.org/COPYRIGHT.
|
||
|
|
//
|
||
|
|
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
|
||
|
|
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
|
||
|
|
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
|
||
|
|
// option. This file may not be copied, modified, or distributed
|
||
|
|
// except according to those terms.
|
||
|
|
|
||
|
|
use attr;
|
||
|
|
use ast::{Item, ItemFn};
|
||
|
|
|
||
|
|
pub enum EntryPointType {
|
||
|
|
None,
|
||
|
|
MainNamed,
|
||
|
|
MainAttr,
|
||
|
|
Start,
|
||
|
|
OtherMain, // Not an entry point, but some other function named main
|
||
|
|
}
|
||
|
|
|
||
|
|
pub fn entry_point_type(item: &Item, depth: usize) -> EntryPointType {
|
||
|
|
match item.node {
|
||
|
|
ItemFn(..) => {
|
||
|
|
if attr::contains_name(&item.attrs, "start") {
|
||
|
|
EntryPointType::Start
|
||
|
|
} else if attr::contains_name(&item.attrs, "main") {
|
||
|
|
EntryPointType::MainAttr
|
||
|
|
} else if item.ident.name == "main" {
|
||
|
|
if depth == 1 {
|
||
|
|
// This is a top-level function so can be 'main'
|
||
|
|
EntryPointType::MainNamed
|
||
|
|
} else {
|
||
|
|
EntryPointType::OtherMain
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
EntryPointType::None
|
||
|
|
}
|
||
|
|
}
|
||
|
|
_ => EntryPointType::None,
|
||
|
|
}
|
||
|
|
}
|