Press n or j to go to the next uncovered block, b, p or k for the previous block.
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/** @import { Context } from '../../types' */
import * as e from '../../../../errors.js';
import { is_text_attribute } from '../../../../utils/ast.js';
import * as w from '../../../../warnings.js';
import { is_custom_element_node } from '../../../nodes.js';
import { regex_only_whitespaces } from '../../../patterns.js';
/**
* @param {AST.Attribute} attribute
*/
export function validate_attribute_name(attribute) {
if (
attribute.name.includes(':') &&
!attribute.name.startsWith('xmlns:') &&
!attribute.name.startsWith('xlink:') &&
!attribute.name.startsWith('xml:')
) {
w.attribute_illegal_colon(attribute);
}
}
/**
* @param {AST.Attribute} attribute
* @param {ElementLike} parent
*/
export function validate_attribute(attribute, parent) {
if (
Array.isArray(attribute.value) &&
attribute.value.length === 1 &&
attribute.value[0].type === 'ExpressionTag' &&
(parent.type === 'Component' ||
parent.type === 'SvelteComponent' ||
parent.type === 'SvelteSelf' ||
(parent.type === 'RegularElement' && is_custom_element_node(parent)))
) {
w.attribute_quoted(attribute);
}
if (attribute.value === true || !Array.isArray(attribute.value) || attribute.value.length === 1) {
return;
}
const is_quoted = attribute.value.at(-1)?.end !== attribute.end;
if (!is_quoted) {
e.attribute_unquoted_sequence(attribute);
}
}
/**
* @param {Context} context
* @param {AST.Attribute} attribute
* @param {boolean} is_component
*/
export function validate_slot_attribute(context, attribute, is_component = false) {
const parent = context.path.at(-2);
let owner = undefined;
if (parent?.type === 'SnippetBlock') {
if (!is_text_attribute(attribute)) {
e.slot_attribute_invalid(attribute);
}
return;
}
let i = context.path.length;
while (i--) {
const ancestor = context.path[i];
if (
!owner &&
(ancestor.type === 'Component' ||
ancestor.type === 'SvelteComponent' ||
ancestor.type === 'SvelteSelf' ||
ancestor.type === 'SvelteElement' ||
(ancestor.type === 'RegularElement' && is_custom_element_node(ancestor)))
) {
owner = ancestor;
}
}
if (owner) {
if (!is_text_attribute(attribute)) {
e.slot_attribute_invalid(attribute);
}
if (
owner.type === 'Component' ||
owner.type === 'SvelteComponent' ||
owner.type === 'SvelteSelf'
) {
if (owner !== parent) {
e.slot_attribute_invalid_placement(attribute);
}
const name = attribute.value[0].data;
if (context.state.component_slots.has(name)) {
e.slot_attribute_duplicate(attribute, name, owner.name);
}
context.state.component_slots.add(name);
if (name === 'default') {
for (const node of owner.fragment.nodes) {
if (node.type === 'Text' && regex_only_whitespaces.test(node.data)) {
continue;
}
if (node.type === 'RegularElement' || node.type === 'SvelteFragment') {
if (node.attributes.some((a) => a.type === 'Attribute' && a.name === 'slot')) {
continue;
}
}
e.slot_default_duplicate(node);
}
}
}
} else if (!is_component) {
e.slot_attribute_invalid_placement(attribute);
}
}
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