36 lines
1.0 KiB
Rust
36 lines
1.0 KiB
Rust
use crate::attr;
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use crate::ast::{Item, ItemKind};
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use crate::symbol::sym;
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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.kind {
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ItemKind::Fn(..) => {
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if attr::contains_name(&item.attrs, sym::start) {
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EntryPointType::Start
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} else if attr::contains_name(&item.attrs, sym::main) {
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EntryPointType::MainAttr
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} else if item.ident.name == sym::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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