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Remove GLOBAL_ARGUMENT_CNT JS binding

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This is easier to manage statically so no need to track it dynamically
This commit is contained in:
Alex Crichton 2018-04-03 12:38:33 -07:00
parent a805e04a81
commit f1e8e2bee0
1 changed files with 11 additions and 18 deletions
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29
crates/cli-support/src/js.rs
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@ -545,7 +545,6 @@ impl<'a> Context<'a> {
self.required_internal_exports.insert("__wbindgen_malloc");
self.expose_text_encoder();
self.expose_uint8_memory();
self.expose_push_global_argument();
self.globals.push_str(&format!("
function passStringToWasm(arg) {{
if (typeof(arg) !== 'string')
@ -1036,17 +1035,16 @@ impl<'a> Context<'a> {
}
}
fn expose_push_global_argument(&mut self) {
if !self.exposed_globals.insert("push_global_argument") {
fn expose_set_global_argument(&mut self) {
if !self.exposed_globals.insert("set_global_argument") {
return
}
self.expose_uint32_memory();
self.expose_global_argument_ptr();
self.globals.push_str("
function pushGlobalArgument(arg) {
const idx = globalArgumentPtr() / 4 + GLOBAL_ARGUMENT_CNT;
function setGlobalArgument(arg, i) {
const idx = globalArgumentPtr() / 4 + i;
getUint32Memory()[idx] = arg;
GLOBAL_ARGUMENT_CNT += 1;
}
");
}
@ -1072,7 +1070,6 @@ impl<'a> Context<'a> {
self.required_internal_exports.insert("__wbindgen_global_argument_ptr");
self.globals.push_str("
let cachedGlobalArgumentPtr = null;
let GLOBAL_ARGUMENT_CNT = 0;
function globalArgumentPtr() {
if (cachedGlobalArgumentPtr === null)
cachedGlobalArgumentPtr = wasm.__wbindgen_global_argument_ptr();
@ -1159,7 +1156,7 @@ impl<'a, 'b> SubContext<'a, 'b> {
passed_args.push_str("this.ptr");
}
let mut argument_pushed = false;
let mut global_idx = 0;
for (i, arg) in function.arguments.iter().enumerate() {
let name = format!("arg{}", i);
if i > 0 {
@ -1218,12 +1215,12 @@ impl<'a, 'b> SubContext<'a, 'b> {
dst_ts.push_str(": ");
dst_ts.push_str(ty.js_ty());
let func = self.cx.pass_to_wasm_function(&ty);
self.cx.expose_push_global_argument();
argument_pushed = true;
self.cx.expose_set_global_argument();
arg_conversions.push_str(&format!("\
const [ptr{i}, len{i}] = {func}({arg});
pushGlobalArgument(len{i});
", i = i, func = func, arg = name));
setGlobalArgument(len{i}, {global_idx});
", i = i, func = func, arg = name, global_idx = global_idx));
global_idx += 1;
pass(&format!("ptr{}", i));
if !ty.owned {
destructors.push_str(&format!("\n\
@ -1329,9 +1326,6 @@ impl<'a, 'b> SubContext<'a, 'b> {
};
dst_ts.push_str(";");
dst.push_str(" {\n ");
if argument_pushed {
dst.push_str("GLOBAL_ARGUMENT_CNT = 0;\n");
}
dst.push_str(&arg_conversions);
if destructors.len() == 0 {
dst.push_str(&format!("\
@ -1546,11 +1540,10 @@ impl<'a, 'b> SubContext<'a, 'b> {
}
let f = self.cx.pass_to_wasm_function(&ty);
self.cx.expose_uint32_memory();
self.cx.expose_push_global_argument();
self.cx.expose_set_global_argument();
format!("
GLOBAL_ARGUMENT_CNT = 0;
const [retptr, retlen] = {}({});
pushGlobalArgument(retlen);
setGlobalArgument(retlen, 0);
return retptr;
", f, invoc)
}