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extern crate lazy_static;
use lazy_static::lazy_static;
use std::collections::HashSet;
use std::ffi::{CStr, CString};
use std::fs::{OpenOptions, File};
use std::io::Write;
use std::os::raw::{c_char, c_int};
use std::sync::Mutex;
#[derive(Eq, PartialEq, Hash)]
struct Span {
sail_file: CString,
line1: i32,
char1: i32,
line2: i32,
char2: i32,
}
lazy_static! {
static ref BRANCHES: Mutex<HashSet<Span>> = Mutex::new(HashSet::new());
static ref FUNCTIONS: Mutex<HashSet<Span>> = Mutex::new(HashSet::new());
}
fn function_entry(_function_name: &CStr, span: Span) {
FUNCTIONS.lock().unwrap().insert(span);
}
fn branch_taken(_branch_id: i32, span: Span) {
BRANCHES.lock().unwrap().insert(span);
}
fn branch_reached(_branch_id: i32, _span: Span) {
()
}
fn write_locations(file: &mut File, kind: char, spans: &Mutex<HashSet<Span>>) -> bool {
for span in spans.lock().unwrap().iter() {
let res = write!(
file,
"{} \"{}\", {}, {}, {}, {}\n",
kind,
span.sail_file.to_string_lossy(),
span.line1,
span.char1,
span.line2,
span.char2,
);
if res.is_err() {
return false;
}
};
true
}
#[no_mangle]
pub extern "C" fn sail_coverage_exit() -> c_int {
if let Ok(mut file) = OpenOptions::new().create(true).append(true).open("sail_coverage") {
if !write_locations(&mut file, 'B', &BRANCHES) {
return 1
}
if !write_locations(&mut file, 'F', &FUNCTIONS) {
return 1
}
0
} else {
1
}
}
#[no_mangle]
pub unsafe extern "C" fn sail_function_entry(
function_name: *const c_char,
sail_file: *const c_char,
l1: c_int,
c1: c_int,
l2: c_int,
c2: c_int,
) {
function_entry(
CStr::from_ptr(function_name),
Span {
sail_file: CStr::from_ptr(sail_file).into(),
line1: l1 as i32,
char1: c1 as i32,
line2: l2 as i32,
char2: c2 as i32,
},
)
}
#[no_mangle]
pub unsafe extern "C" fn sail_branch_taken(
branch_id: c_int,
sail_file: *const c_char,
l1: c_int,
c1: c_int,
l2: c_int,
c2: c_int,
) {
branch_taken(
branch_id as i32,
Span {
sail_file: CStr::from_ptr(sail_file).into(),
line1: l1 as i32,
char1: c1 as i32,
line2: l2 as i32,
char2: c2 as i32,
},
)
}
#[no_mangle]
pub unsafe extern "C" fn sail_branch_reached(
branch_id: c_int,
sail_file: *const c_char,
l1: c_int,
c1: c_int,
l2: c_int,
c2: c_int,
) {
branch_reached(
branch_id as i32,
Span {
sail_file: CStr::from_ptr(sail_file).into(),
line1: l1 as i32,
char1: c1 as i32,
line2: l2 as i32,
char2: c2 as i32,
},
)
}
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