fluencelabs/wasm-bindgen
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Greatly simplify handling of types in Rust

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Push the compiler to do trait resolution to figure out what each type is bound
with in JS, and that way we can accept effectively all types (so long as they
implement a trait).
This commit is contained in:
Alex Crichton
2018-02-06 07:56:14 -08:00
parent 0320bc0d7c
commit d5ff725913
8 changed files with 772 additions and 534 deletions
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47
src/lib.rs
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@ -8,7 +8,6 @@
extern crate wasm_bindgen_macro;
use std::mem;
use std::ptr;
/// A module which is typically glob imported from:
@ -21,6 +20,8 @@ pub mod prelude {
pub use JsObject;
}
pub mod convert;
/// Representation of an object owned by JS.
///
/// A `JsObject` doesn't actually live in Rust right now but actually in a table
@ -38,7 +39,7 @@ impl JsObject {
/// be owned by the JS garbage collector.
pub fn from_str(s: &str) -> JsObject {
unsafe {
JsObject::__from_idx(__wbindgen_string_new(s.as_ptr(), s.len()))
JsObject { idx: __wbindgen_string_new(s.as_ptr(), s.len()) }
}
}
@ -48,7 +49,7 @@ impl JsObject {
/// allocated number) and returns a handle to the JS version of it.
pub fn from_f64(n: f64) -> JsObject {
unsafe {
JsObject::__from_idx(__wbindgen_number_new(n))
JsObject { idx: __wbindgen_number_new(n) }
}
}
@ -58,21 +59,21 @@ impl JsObject {
/// allocated boolean) and returns a handle to the JS version of it.
pub fn from_bool(b: bool) -> JsObject {
unsafe {
JsObject::__from_idx(__wbindgen_boolean_new(b as u32))
JsObject { idx: __wbindgen_boolean_new(b as u32) }
}
}
/// Creates a new JS value representing `undefined`.
pub fn undefined() -> JsObject {
unsafe {
JsObject::__from_idx(__wbindgen_undefined_new())
JsObject { idx: __wbindgen_undefined_new() }
}
}
/// Creates a new JS value representing `null`.
pub fn null() -> JsObject {
unsafe {
JsObject::__from_idx(__wbindgen_null_new())
JsObject { idx: __wbindgen_null_new() }
}
}
@ -84,26 +85,26 @@ impl JsObject {
unsafe {
let ptr = description.map(|s| s.as_ptr()).unwrap_or(ptr::null());
let len = description.map(|s| s.len()).unwrap_or(0);
JsObject::__from_idx(__wbindgen_symbol_new(ptr, len))
JsObject { idx: __wbindgen_symbol_new(ptr, len) }
}
}
#[doc(hidden)]
pub fn __from_idx(idx: u32) -> JsObject {
JsObject { idx }
}
#[doc(hidden)]
pub fn __get_idx(&self) -> u32 {
self.idx
}
#[doc(hidden)]
pub fn __into_idx(self) -> u32 {
let ret = self.idx;
mem::forget(self);
return ret
}
// #[doc(hidden)]
// pub fn __from_idx(idx: u32) -> JsObject {
// JsObject { idx }
// }
//
// #[doc(hidden)]
// pub fn __get_idx(&self) -> u32 {
// self.idx
// }
//
// #[doc(hidden)]
// pub fn __into_idx(self) -> u32 {
// let ret = self.idx;
// mem::forget(self);
// return ret
// }
/// Returns the `f64` value of this JS value if it's an instance of a
/// number.