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Change schemes for encoding custom type names

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Store JSON a utf-32, map hashes of names to a `char` and store that name
in the map, and then do a reverse mapping when generating JS
This commit is contained in:
Alex Crichton
2018-02-06 16:06:21 -08:00
parent 8312f3ae9f
commit 43ee52bcbf
8 changed files with 124 additions and 57 deletions
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20
src/convert.rs
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@@ -5,13 +5,13 @@ use super::JsValue;
// keep in sync with shared/src/lib.rs TYPE constants
pub const DESCRIPTOR_CUSTOM_REF_FLAG: u32 = 0x1;
pub const DESCRIPTOR_NUMBER: char = '\u{5e}';
pub const DESCRIPTOR_BOOLEAN: char = '\u{61}';
pub const DESCRIPTOR_JS_OWNED: char = '\u{62}';
pub const DESCRIPTOR_NUMBER: u32 = 0x5e;
pub const DESCRIPTOR_BOOLEAN: u32 = 0x61;
pub const DESCRIPTOR_JS_OWNED: u32 = 0x62;
pub trait WasmBoundary {
type Js: WasmAbi;
const DESCRIPTOR: char;
const DESCRIPTOR: u32;
fn into_js(self) -> Self::Js;
unsafe fn from_js(js: Self::Js) -> Self;
@@ -44,7 +44,7 @@ macro_rules! simple {
($($t:tt)*) => ($(
impl WasmBoundary for $t {
type Js = $t;
const DESCRIPTOR: char = DESCRIPTOR_NUMBER;
const DESCRIPTOR: u32 = DESCRIPTOR_NUMBER;
fn into_js(self) -> $t { self }
unsafe fn from_js(js: $t) -> $t { js }
@@ -58,7 +58,7 @@ macro_rules! as_u32 {
($($t:tt)*) => ($(
impl WasmBoundary for $t {
type Js = u32;
const DESCRIPTOR: char = DESCRIPTOR_NUMBER;
const DESCRIPTOR: u32 = DESCRIPTOR_NUMBER;
fn into_js(self) -> u32 { self as u32 }
unsafe fn from_js(js: u32) -> $t { js as $t }
@@ -70,7 +70,7 @@ as_u32!(i8 u8 i16 u16 i32 isize usize);
impl WasmBoundary for bool {
type Js = u32;
const DESCRIPTOR: char = DESCRIPTOR_BOOLEAN;
const DESCRIPTOR: u32 = DESCRIPTOR_BOOLEAN;
fn into_js(self) -> u32 { self as u32 }
unsafe fn from_js(js: u32) -> bool { js != 0 }
@@ -78,7 +78,7 @@ impl WasmBoundary for bool {
impl<T> WasmBoundary for *const T {
type Js = u32;
const DESCRIPTOR: char = DESCRIPTOR_NUMBER;
const DESCRIPTOR: u32 = DESCRIPTOR_NUMBER;
fn into_js(self) -> u32 { self as u32 }
unsafe fn from_js(js: u32) -> *const T { js as *const T }
@@ -86,7 +86,7 @@ impl<T> WasmBoundary for *const T {
impl<T> WasmBoundary for *mut T {
type Js = u32;
const DESCRIPTOR: char = DESCRIPTOR_NUMBER;
const DESCRIPTOR: u32 = DESCRIPTOR_NUMBER;
fn into_js(self) -> u32 { self as u32 }
unsafe fn from_js(js: u32) -> *mut T { js as *mut T }
@@ -94,7 +94,7 @@ impl<T> WasmBoundary for *mut T {
impl WasmBoundary for JsValue {
type Js = u32;
const DESCRIPTOR: char = DESCRIPTOR_JS_OWNED;
const DESCRIPTOR: u32 = DESCRIPTOR_JS_OWNED;
fn into_js(self) -> u32 {
let ret = self.idx;