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#![forbid(unsafe_code)]
#![deny(warnings)]
pub mod find;
pub use find::*; mod geiger_syn_visitor;
use cargo_geiger_serde::CounterBlock;
use std::error::Error;
use std::fmt;
use std::io;
use std::path::PathBuf;
use std::string::FromUtf8Error;
use syn::{ItemFn, ItemMod};
#[derive(Clone, Copy, Debug, Eq, PartialEq)]
pub enum IncludeTests {
Yes,
No,
}
#[derive(Clone, Debug, Default, Eq, PartialEq)]
pub struct RsFileMetrics {
pub counters: CounterBlock,
pub forbids_unsafe: bool,
}
#[derive(Debug)]
pub enum ScanFileError {
Io(io::Error, PathBuf),
Utf8(FromUtf8Error, PathBuf),
Syn(syn::Error, PathBuf),
}
impl Error for ScanFileError {}
impl fmt::Display for ScanFileError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
fmt::Debug::fmt(self, f)
}
}
fn file_forbids_unsafe(f: &syn::File) -> bool {
use syn::AttrStyle;
use syn::Meta;
use syn::MetaList;
use syn::NestedMeta;
f.attrs
.iter()
.filter(|a| matches!(a.style, AttrStyle::Inner(_)))
.filter_map(|a| a.parse_meta().ok())
.filter(|meta| match meta {
Meta::List(MetaList {
path,
paren_token: _paren,
nested,
}) => {
if !path.is_ident("forbid") {
return false;
}
nested.iter().any(|n| match n {
NestedMeta::Meta(Meta::Path(p)) => {
p.is_ident("unsafe_code")
}
_ => false,
})
}
_ => false,
})
.count()
> 0
}
fn is_test_fn(item_fn: &ItemFn) -> bool {
use syn::Attribute;
item_fn
.attrs
.iter()
.flat_map(Attribute::parse_meta)
.any(|m| meta_contains_ident(&m, "test"))
}
fn has_unsafe_attributes(item_fn: &ItemFn) -> bool {
use syn::Attribute;
item_fn
.attrs
.iter()
.flat_map(Attribute::parse_meta)
.any(|m| {
meta_contains_ident(&m, "no_mangle")
|| meta_contains_attribute(&m, "export_name")
})
}
fn is_test_mod(i: &ItemMod) -> bool {
use syn::Attribute;
use syn::Meta;
i.attrs
.iter()
.flat_map(Attribute::parse_meta)
.any(|m| match m {
Meta::List(ml) => meta_list_is_cfg_test(&ml),
_ => false,
})
}
fn meta_contains_ident(m: &syn::Meta, ident: &str) -> bool {
use syn::Meta;
match m {
Meta::Path(p) => p.is_ident(ident),
_ => false,
}
}
fn meta_contains_attribute(m: &syn::Meta, ident: &str) -> bool {
use syn::Meta;
match m {
Meta::NameValue(nv) => nv.path.is_ident(ident),
_ => false,
}
}
fn meta_list_is_cfg_test(meta_list: &syn::MetaList) -> bool {
use syn::NestedMeta;
if !meta_list.path.is_ident("cfg") {
return false;
}
meta_list.nested.iter().any(|n| match n {
NestedMeta::Meta(meta) => meta_contains_ident(meta, "test"),
_ => false,
})
}