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svelte
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cleanup

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parallelize-async-work
ComputerGuy 5 days ago
parent 7788c30087
commit c17a1e3ed2
1 changed files with 25 additions and 39 deletions
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64
packages/svelte/src/compiler/phases/3-transform/client/visitors/VariableDeclaration.js
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@ -1,4 +1,4 @@
/** @import { CallExpression, Expression, Identifier, Literal, Program, VariableDeclaration, VariableDeclarator } from 'estree' */
/** @import { CallExpression, Expression, Identifier, Literal, Node, Program, VariableDeclaration, VariableDeclarator } from 'estree' */
/** @import { Binding } from '#compiler' */
/** @import { ComponentContext, ParallelizedChunk } from '../types' */
import { dev, is_ignored, locate_node } from '../../../../state.js';
@ -23,12 +23,14 @@ import { get_value } from './shared/declarations.js';
export function VariableDeclaration(node, context) {
/** @type {VariableDeclarator[]} */
const declarations = [];
const parent = /** @type {Node} */ (context.path.at(-1));
const position = /** @type {Program} */ (parent).body?.indexOf?.(node);
if (context.state.analysis.runes) {
for (const declarator of node.declarations) {
const init = /** @type {Expression} */ (declarator.init);
const rune = get_rune(init, context.state.scope);
const bindings = context.state.scope.get_bindings(declarator);
if (
!rune ||
rune === '$effect.tracking' ||
@ -53,40 +55,34 @@ export function VariableDeclaration(node, context) {
init.argument,
context.state.scope,
context.state.analysis,
[
...(context.state.current_parallelized_chunk?.bindings ?? []),
...context.state.scope.get_bindings(declarator)
]
[...(context.state.current_parallelized_chunk?.bindings ?? []), ...bindings]
);
if (parallelize) {
const bindings = context.state.scope.get_bindings(declarator);
const visited = /** @type {VariableDeclarator} */ (
const { id, init: visited_init } = /** @type {VariableDeclarator} */ (
context.visit({
...declarator,
init: init.argument
})
);
const declarators = [
{
id: visited.id,
init: /** @type {Expression} */ (visited.init)
}
];
const _declarator = {
id,
init: /** @type {Expression} */ (visited_init)
};
if (
context.state.current_parallelized_chunk &&
context.state.current_parallelized_chunk.kind === node.kind
) {
context.state.current_parallelized_chunk.declarators.push(...declarators);
context.state.current_parallelized_chunk.declarators.push(_declarator);
context.state.current_parallelized_chunk.bindings.push(...bindings);
context.state.current_parallelized_chunk.position = /** @type {Program} */ (
context.path.at(-1)
parent
).body.indexOf(node);
} else {
/** @type {ParallelizedChunk} */
const chunk = {
kind: node.kind,
declarators,
position: /** @type {Program} */ (context.path.at(-1)).body.indexOf(node),
declarators: [_declarator],
position,
bindings
};
context.state.current_parallelized_chunk = chunk;
@ -185,9 +181,7 @@ export function VariableDeclaration(node, context) {
* @param {Expression} value
*/
const create_state_declarator = (id, value) => {
const binding = /** @type {import('#compiler').Binding} */ (
context.state.scope.get(id.name)
);
const binding = /** @type {Binding} */ (context.state.scope.get(id.name));
const is_state = is_state_source(binding, context.state.analysis);
const is_proxy = should_proxy(value, context.state.scope);
@ -386,15 +380,13 @@ export function VariableDeclaration(node, context) {
) {
context.state.current_parallelized_chunk.declarators.push(...declarators);
context.state.current_parallelized_chunk.bindings.push(...bindings);
context.state.current_parallelized_chunk.position = /** @type {Program} */ (
context.path.at(-1)
).body.indexOf(node);
context.state.current_parallelized_chunk.position = position;
} else {
/** @type {ParallelizedChunk} */
const chunk = {
kind: node.kind,
declarators,
position: /** @type {Program} */ (context.path.at(-1)).body.indexOf(node),
position,
bindings
};
context.state.current_parallelized_chunk = chunk;
@ -407,7 +399,7 @@ export function VariableDeclaration(node, context) {
}
} else {
for (const declarator of node.declarations) {
const bindings = /** @type {Binding[]} */ (context.state.scope.get_bindings(declarator));
const bindings = context.state.scope.get_bindings(declarator);
const has_state = bindings.some((binding) => binding.kind === 'state');
const has_props = bindings.some((binding) => binding.kind === 'bindable_prop');
@ -510,13 +502,9 @@ export function VariableDeclaration(node, context) {
* @param {Expression} value
*/
function create_state_declarators(declarator, context, value) {
const immutable = context.state.analysis.immutable ? b.true : undefined;
if (declarator.id.type === 'Identifier') {
return [
b.declarator(
declarator.id,
b.call('$.mutable_source', value, context.state.analysis.immutable ? b.true : undefined)
)
];
return [b.declarator(declarator.id, b.call('$.mutable_source', value, immutable))];
}
const tmp = b.id(context.state.scope.generate('tmp'));
@ -531,15 +519,13 @@ function create_state_declarators(declarator, context, value) {
const expression = /** @type {Expression} */ (context.visit(b.thunk(value)));
return b.declarator(id, b.call('$.derived', expression));
}),
...paths.map((path) => {
const value = /** @type {Expression} */ (context.visit(path.expression));
const binding = context.state.scope.get(/** @type {Identifier} */ (path.node).name);
...paths.map(({ expression, node }) => {
const value = /** @type {Expression} */ (context.visit(expression));
const binding = context.state.scope.get(/** @type {Identifier} */ (node).name);
return b.declarator(
path.node,
binding?.kind === 'state'
? b.call('$.mutable_source', value, context.state.analysis.immutable ? b.true : undefined)
: value
node,
binding?.kind === 'state' ? b.call('$.mutable_source', value, immutable) : value
);
})
];

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