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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 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 | 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 1433x 1433x 1433x 1528x 1528x 1528x 1528x 1528x 314x 1528x 4x 4x 1524x 1524x 1528x 62x 1528x 1x 1x 1523x 1528x 953x 204x 204x 204x 197x 197x 2x 2x 2x 2x 1x 2x 2x 197x 204x 951x 951x 951x 953x 23x 23x 953x 1519x 1528x 234x 234x 1528x 1424x 1424x 1424x 1424x 1424x 1433x 1433x 1433x 1433x 1518x 1518x 1424x 1424x 1424x 1424x 1424x 1424x 1424x 1433x 1867x 7x 7x 7x 1860x 1867x 1867x 1867x 1867x 1867x 1424x 1424x 1424x 1433x 1605x 1605x 1605x 1605x 1605x 1605x 1605x 1605x 1605x 1407x | /** @import { Ast } from '#compiler' */
/** @import { Context } from '../../types' */
import * as e from '../../../../errors.js';
import { get_attribute_expression, is_expression_attribute } from '../../../../utils/ast.js';
import { determine_slot } from '../../../../utils/slot.js';
import {
validate_attribute,
validate_attribute_name,
validate_slot_attribute
} from './attribute.js';
import { mark_subtree_dynamic } from './fragment.js';
/**
* @param {Ast.Component | Ast.SvelteComponent | Ast.SvelteSelf} node
* @param {Context} context
*/
export function visit_component(node, context) {
mark_subtree_dynamic(context.path);
for (const attribute of node.attributes) {
if (
attribute.type !== 'Attribute' &&
attribute.type !== 'SpreadAttribute' &&
attribute.type !== 'LetDirective' &&
attribute.type !== 'OnDirective' &&
attribute.type !== 'BindDirective'
) {
e.component_invalid_directive(attribute);
}
if (
attribute.type === 'OnDirective' &&
(attribute.modifiers.length > 1 || attribute.modifiers.some((m) => m !== 'once'))
) {
e.event_handler_invalid_component_modifier(attribute);
}
if (attribute.type === 'Attribute') {
if (context.state.analysis.runes) {
validate_attribute(attribute, node);
if (is_expression_attribute(attribute)) {
const expression = get_attribute_expression(attribute);
if (expression.type === 'SequenceExpression') {
let i = /** @type {number} */ (expression.start);
while (--i > 0) {
const char = context.state.analysis.source[i];
if (char === '(') break; // parenthesized sequence expressions are ok
if (char === '{') e.attribute_invalid_sequence_expression(expression);
}
}
}
}
validate_attribute_name(attribute);
if (attribute.name === 'slot') {
validate_slot_attribute(context, attribute, true);
}
}
if (attribute.type === 'BindDirective' && attribute.name !== 'this') {
context.state.analysis.uses_component_bindings = true;
}
}
// If the component has a slot attribute — `<Foo slot="whatever" .../>` —
// then `let:` directives apply to other attributes, instead of just the
// top-level contents of the component. Yes, this is very weird.
const default_state = determine_slot(node)
? context.state
: { ...context.state, scope: node.metadata.scopes.default };
for (const attribute of node.attributes) {
context.visit(attribute, attribute.type === 'LetDirective' ? default_state : context.state);
}
/** @type {Ast.Comment[]} */
let comments = [];
/** @type {Record<string, Ast.Fragment['nodes']>} */
const nodes = { default: [] };
for (const child of node.fragment.nodes) {
if (child.type === 'Comment') {
comments.push(child);
continue;
}
const slot_name = determine_slot(child) ?? 'default';
(nodes[slot_name] ??= []).push(...comments, child);
if (slot_name !== 'default') comments = [];
}
const component_slots = new Set();
for (const slot_name in nodes) {
const state = {
...context.state,
scope: node.metadata.scopes[slot_name],
parent_element: null,
component_slots
};
context.visit({ ...node.fragment, nodes: nodes[slot_name] }, state);
}
}
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