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