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Reduce node/browser duplication

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Centralize the export of a function to one location to reduce duplication in
various other locations checking whether Node is being targeted or not.
This commit is contained in:
Alex Crichton 2018-04-03 13:12:28 -07:00
parent cf9ef7b570
commit 7f614c3c3a
2 changed files with 33 additions and 60 deletions
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90
crates/cli-support/src/js.rs
View File

@ -43,6 +43,20 @@ impl<'a> Context<'a> {
}
}
fn export(&mut self, name: &str, contents: &str) {
let contents = contents.trim();
let global = if self.config.nodejs {
format!("module.exports.{} = {};\n", name, contents)
} else {
if contents.starts_with("function") {
format!("export function {} {}\n", name, &contents[8..])
} else {
format!("export const {} = {};\n", name, contents)
}
};
self.globals.push_str(&global);
}
pub fn finalize(&mut self, module_name: &str) -> (String, String) {
self.write_classes();
{
@ -52,16 +66,7 @@ impl<'a> Context<'a> {
}
let contents = f(self);
let contents = contents.trim();
let global = if self.config.nodejs {
format!("module.exports.{} = {};\n", name, contents)
} else {
if contents.starts_with("function") {
format!("export function {} {}\n", name, &contents[8..])
} else {
format!("export const {} = {};\n", name, contents)
}
};
self.globals.push_str(&global);
self.export(name, contents);
};
bind("__wbindgen_object_clone_ref", &|me| {
@ -269,11 +274,11 @@ impl<'a> Context<'a> {
let new_name = shared::new_function(&class);
if self.wasm_import_needed(&new_name) {
self.globals.push_str(&format!("
export function {new_name}(ptr) {{
self.export(&new_name, &format!("
function(ptr) {{
return addHeapObject(new {class}(ptr, token));
}}
", new_name = new_name, class = class));
", class = class));
}
} else {
dst.push_str(&format!("
@ -285,11 +290,11 @@ impl<'a> Context<'a> {
let new_name = shared::new_function(&class);
if self.wasm_import_needed(&new_name) {
self.globals.push_str(&format!("
export function {new_name}(ptr) {{
self.export(&new_name, &format!("
function(ptr) {{
return addHeapObject(new {class}(ptr));
}}
", new_name = new_name, class = class));
", class = class));
}
}
@ -566,7 +571,7 @@ impl<'a> Context<'a> {
const buf = textEncoder().encode(arg);
const ptr = wasm.__wbindgen_malloc(buf.length);
getUint8Memory().set(buf, buf.length);
return [ptr, len];
return [ptr, buf.length];
}}
", debug));
}
@ -1110,17 +1115,7 @@ impl<'a, 'b> SubContext<'a, 'b> {
&export.function.name,
false,
&export.function);
if self.cx.config.nodejs {
self.cx.globals.push_str("module.exports.");
self.cx.globals.push_str(&export.function.name);
self.cx.globals.push_str(" = ");
} else {
self.cx.globals.push_str("export ");
}
self.cx.globals.push_str(&js);
if self.cx.config.nodejs {
self.cx.globals.push_str(";");
}
self.cx.export(&export.function.name, &js);
self.cx.globals.push_str("\n");
self.cx.typescript.push_str("export ");
self.cx.typescript.push_str(&ts);
@ -1156,7 +1151,7 @@ impl<'a, 'b> SubContext<'a, 'b> {
wasm_name: &str,
is_method: bool,
function: &shared::Function) -> (String, String) {
let mut dst = format!("{}(", function.name);
let mut dst = String::from("(");
let mut dst_ts = format!("{}(", function.name);
let mut passed_args = String::new();
let mut arg_conversions = String::new();
@ -1383,11 +1378,11 @@ impl<'a, 'b> SubContext<'a, 'b> {
// TODO: should support more types to import here
let obj = self.import_name(info, &import.name);
self.cx.expose_add_heap_object();
self.cx.globals.push_str(&format!("
export function {}() {{
self.cx.export(&import.shim, &format!("
function() {{
return addHeapObject({});
}}
", import.shim, obj));
", obj));
}
pub fn generate_import_function(&mut self,
@ -1395,7 +1390,7 @@ impl<'a, 'b> SubContext<'a, 'b> {
import: &shared::ImportFunction) {
let mut dst = String::new();
dst.push_str(&format!("function {}(", import.shim));
dst.push_str("function(");
let mut invoc_args = Vec::new();
let mut abi_args = Vec::new();
@ -1584,18 +1579,7 @@ impl<'a, 'b> SubContext<'a, 'b> {
dst.push_str(") {\n");
dst.push_str(&extra);
dst.push_str(&format!("{}\n}}", invoc));
if self.cx.config.nodejs {
self.cx.globals.push_str("module.exports.");
self.cx.globals.push_str(&import.shim);
self.cx.globals.push_str(" = ");
self.cx.globals.push_str(&dst);
self.cx.globals.push_str(";\n");
} else {
self.cx.globals.push_str("export ");
self.cx.globals.push_str(&dst);
self.cx.globals.push_str("\n");
}
self.cx.export(&import.shim, &dst);
}
pub fn generate_enum(&mut self, enum_: &shared::Enum) {
@ -1604,21 +1588,7 @@ impl<'a, 'b> SubContext<'a, 'b> {
for variant in enum_.variants.iter() {
variants.push_str(&format!("{}:{},", variant.name, variant.value));
}
let global_export = if self.cx.config.nodejs {
let mut enum_string = format!("const {} = Object.freeze({{", enum_.name);
enum_string.push_str(&variants);
enum_string.push_str("})\n");
let export = format!("module.exports.{} = {};\n", enum_.name, enum_.name);
enum_string.push_str(&export);
enum_string
} else {
let mut enum_string = format!("export const {} = Object.freeze({{", enum_.name);
enum_string.push_str(&variants);
enum_string.push_str("})\n");
enum_string
};
self.cx.globals.push_str(&global_export);
self.cx.export(&enum_.name, &format!("Object.freeze({{ {} }})", variants));
self.cx.typescript.push_str(&format!("export enum {} {{", enum_.name));
variants.clear();

3
tests/node.rs
View File

@ -13,12 +13,14 @@ fn works() {
#[wasm_bindgen(module = "./test")]
extern {
static FOO: JsValue;
fn hit();
}
#[wasm_bindgen]
pub fn run() {
hit();
assert_eq!(FOO.as_f64(), Some(1.0));
}
#[wasm_bindgen]
@ -118,6 +120,7 @@ fn works() {
module.exports.hit = function() {
called = true;
};
module.exports.FOO = 1.0;
const { math, run, Foo, Color, cycle } = require('./out');