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Rustify Deno API

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Robby Madruga 2018-06-29 15:07:19 -07:00 • committed by Ryan Dahl
parent 92d01f8519
commit 7fcaf7d35d
1 changed files with 16 additions and 17 deletions
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33
src/main.rs
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@ -78,6 +78,8 @@ extern "C" fn on_message(_d: *const DenoC, channel_ptr: *const c_char, _buf: den
println!("got message in rust {}", channel); println!("got message in rust {}", channel);
} }
type DenoException<'a> = &'a str;
struct Deno { struct Deno {
ptr: *const DenoC, ptr: *const DenoC,
} }
@ -88,20 +90,21 @@ impl Deno {
Deno { ptr: ptr } Deno { ptr: ptr }
} }
fn execute(&self, js_filename: &str, js_source: &str) -> bool { fn execute(&mut self, js_filename: &str, js_source: &str) -> Result<(), DenoException> {
let filename = CString::new(js_filename).unwrap(); let filename = CString::new(js_filename).unwrap();
let source = CString::new(js_source).unwrap(); let source = CString::new(js_source).unwrap();
let r = unsafe { deno_execute(self.ptr, filename.as_ptr(), source.as_ptr()) }; let r = unsafe { deno_execute(self.ptr, filename.as_ptr(), source.as_ptr()) };
r != 0 if r == 0 {
let ptr = unsafe { deno_last_exception(self.ptr) };
let cstr = unsafe { CStr::from_ptr(ptr) };
return Err(cstr.to_str().unwrap());
}
Ok(())
} }
}
fn last_exception(&self) -> &str { impl Drop for Deno {
let ptr = unsafe { deno_last_exception(self.ptr) }; fn drop(&mut self) {
let cstr = unsafe { CStr::from_ptr(ptr) };
cstr.to_str().unwrap()
}
fn destroy(self) {
unsafe { deno_delete(self.ptr) } unsafe { deno_delete(self.ptr) }
} }
} }
@ -118,14 +121,10 @@ fn main() {
println!("version: {}", version); println!("version: {}", version);
*/ */
let d = Deno::new(); let mut d = Deno::new();
let ok = d.execute("deno_main.js", "denoMain();"); d.execute("deno_main.js", "denoMain();").unwrap_or_else(|err| {
if !ok { println!("Error {}\n", err);
let e = d.last_exception();
println!("Error {}\n", e);
std::process::exit(1); std::process::exit(1);
} });
d.destroy();
} }