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Tighten up passStringToWasm a bit

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Only emit `throw` on debug mode primarily
This commit is contained in:
Alex Crichton 2018-04-03 12:44:09 -07:00
parent f1e8e2bee0
commit 978b5ada63
1 changed files with 12 additions and 6 deletions
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18
crates/cli-support/src/js.rs
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@ -545,17 +545,23 @@ impl<'a> Context<'a> {
self.required_internal_exports.insert("__wbindgen_malloc"); self.required_internal_exports.insert("__wbindgen_malloc");
self.expose_text_encoder(); self.expose_text_encoder();
self.expose_uint8_memory(); self.expose_uint8_memory();
self.globals.push_str(&format!(" let debug = if self.config.debug {
function passStringToWasm(arg) {{ "
if (typeof(arg) !== 'string') if (typeof(arg) !== 'string')
throw new Error('expected a string argument'); throw new Error('expected a string argument');
"
} else {
""
};
self.globals.push_str(&format!("
function passStringToWasm(arg) {{
{}
const buf = textEncoder().encode(arg); const buf = textEncoder().encode(arg);
const len = buf.length; const ptr = wasm.__wbindgen_malloc(buf.length);
const ptr = wasm.__wbindgen_malloc(len); getUint8Memory().set(buf, buf.length);
getUint8Memory().set(buf, ptr);
return [ptr, len]; return [ptr, len];
}} }}
")); ", debug));
} }
fn expose_pass_array8_to_wasm(&mut self) { fn expose_pass_array8_to_wasm(&mut self) {