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rustdoc: use a more compact encoding for implementors/trait.*.js

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The exact amount that this reduces the size of an implementors file depends
on whether most of the impls are synthetic or not. For `Send`, it reduces
the file from 128K to 116K, while for `Clone` it went from 64K to 52K.
This commit is contained in:
Michael Howell 2022-08-04 12:13:16 -07:00
parent 3830ecaa8d
commit 513cf8664a
2 changed files with 83 additions and 21 deletions
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14
src/librustdoc/html/static/js/main.js
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@ -501,6 +501,10 @@ function loadCss(cssFileName) {
const synthetic_implementors = document.getElementById("synthetic-implementors-list");
const inlined_types = new Set();
const TEXT_IDX = 0;
const SYNTHETIC_IDX = 1;
const TYPES_IDX = 2;
if (synthetic_implementors) {
// This `inlined_types` variable is used to avoid having the same implementation
// showing up twice. For example "String" in the "Sync" doc page.
@ -536,10 +540,12 @@ function loadCss(cssFileName) {
struct_loop:
for (const struct of structs) {
const list = struct.synthetic ? synthetic_implementors : implementors;
const list = struct[SYNTHETIC_IDX] ? synthetic_implementors : implementors;
if (struct.synthetic) {
for (const struct_type of struct.types) {
// The types list is only used for synthetic impls.
// If this changes, `main.js` and `write_shared.rs` both need changed.
if (struct[SYNTHETIC_IDX]) {
for (const struct_type of struct[TYPES_IDX]) {
if (inlined_types.has(struct_type)) {
continue struct_loop;
}
@ -548,7 +554,7 @@ function loadCss(cssFileName) {
}
const code = document.createElement("h3");
code.innerHTML = struct.text;
code.innerHTML = struct[TEXT_IDX];
addClass(code, "code-header");
addClass(code, "in-band");