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| 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 70 71 72 73 74 75 76 77 78 79 80 81 82 83 | 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 804x 804x 804x 804x 804x 804x 804x 804x 804x 804x 804x 804x 804x 804x 804x 804x 804x 804x 1729x 1493x 1493x 1493x 1493x 1729x 372x 372x 372x 2x 2x 2x 2x 2x 2x 372x 1493x 1729x 764x 44x 764x 720x 720x 763x 764x 58x 56x 58x 58x 1729x 729x 729x 194x 194x 729x 729x 332x 268x 332x 332x 729x 1492x 1729x 2x 2x 2x 804x 804x | import { EFFECT_TRANSPARENT } from '../../constants.js';
import { hydrate_nodes, hydrating, set_hydrating } from '../hydration.js';
import { remove } from '../reconciler.js';
import { block, branch, pause_effect, resume_effect } from '../../reactivity/effects.js';
import { HYDRATION_END_ELSE } from '../../../../constants.js';
/**
* @param {Comment} anchor
* @param {() => boolean} get_condition
* @param {(anchor: Node) => import('#client').Dom} consequent_fn
* @param {null | ((anchor: Node) => import('#client').Dom)} [alternate_fn]
* @param {boolean} [elseif] True if this is an `{:else if ...}` block rather than an `{#if ...}`, as that affects which transitions are considered 'local'
* @returns {void}
*/
export function if_block(
anchor,
get_condition,
consequent_fn,
alternate_fn = null,
elseif = false
) {
/** @type {import('#client').Effect | null} */
var consequent_effect = null;
/** @type {import('#client').Effect | null} */
var alternate_effect = null;
/** @type {boolean | null} */
var condition = null;
var flags = elseif ? EFFECT_TRANSPARENT : 0;
block(() => {
if (condition === (condition = !!get_condition())) return;
/** Whether or not there was a hydration mismatch. Needs to be a `let` or else it isn't treeshaken out */
let mismatch = false;
if (hydrating) {
const is_else = anchor.data === HYDRATION_END_ELSE;
if (condition === is_else) {
// Hydration mismatch: remove everything inside the anchor and start fresh.
// This could happen with `{#if browser}...{/if}`, for example
remove(hydrate_nodes);
set_hydrating(false);
mismatch = true;
}
}
if (condition) {
if (consequent_effect) {
resume_effect(consequent_effect);
} else {
consequent_effect = branch(() => consequent_fn(anchor));
}
if (alternate_effect) {
pause_effect(alternate_effect, () => {
alternate_effect = null;
});
}
} else {
if (alternate_effect) {
resume_effect(alternate_effect);
} else if (alternate_fn) {
alternate_effect = branch(() => alternate_fn(anchor));
}
if (consequent_effect) {
pause_effect(consequent_effect, () => {
consequent_effect = null;
});
}
}
if (mismatch) {
// continue in hydration mode
set_hydrating(true);
}
}, flags);
}
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