Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 | 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 1101x 1101x 2x 2x 2x 2x 2x 2x 2x 2x 2x 1152x 1152x 1152x 1152x 337x 337x 337x 1152x 1152x 1104x 1104x 48x 48x 48x 1124x 48x 1124x 38x 38x 38x 38x 38x 38x 10x 10x 10x 10x 10x 10x 10x 10x 10x 10x 10x 10x 10x 2x 2x 2x 2x 1103x 1103x 1103x | /** @import { AssignmentExpression, AssignmentOperator, Expression, Pattern } from 'estree' */
/** @import { SvelteNode } from '#compiler' */
/** @import { Context, ServerTransformState } from '../types.js' */
import * as b from '../../../../utils/builders.js';
import { build_assignment_value } from '../../../../utils/ast.js';
import { visit_assignment_expression } from '../../shared/assignments.js';
/**
* @param {AssignmentExpression} node
* @param {Context} context
*/
export function AssignmentExpression(node, context) {
return visit_assignment_expression(node, context, build_assignment);
}
/**
* Only returns an expression if this is not a `$store` assignment, as others can be kept as-is
* @param {AssignmentOperator} operator
* @param {Pattern} left
* @param {Expression} right
* @param {import('zimmerframe').Context<SvelteNode, ServerTransformState>} context
* @returns {Expression | null}
*/
function build_assignment(operator, left, right, context) {
let object = left;
while (object.type === 'MemberExpression') {
// @ts-expect-error
object = object.object;
}
if (object.type !== 'Identifier' || !is_store_name(object.name)) {
return null;
}
const name = object.name.slice(1);
if (!context.state.scope.get(name)) {
return null;
}
if (object === left) {
let value = /** @type {Expression} */ (
context.visit(build_assignment_value(operator, left, right))
);
return b.call('$.store_set', b.id(name), value);
}
return b.call(
'$.store_mutate',
b.assignment('??=', b.id('$$store_subs'), b.object([])),
b.literal(object.name),
b.id(name),
b.assignment(
operator,
/** @type {Pattern} */ (context.visit(left)),
/** @type {Expression} */ (context.visit(right))
)
);
}
/**
* @param {string} name
*/
function is_store_name(name) {
return name[0] === '$' && /[A-Za-z_]/.test(name[1]);
}
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