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/** @import { SvelteNode } from '#compiler' */
/** @import { Context } from '../types' */
import { get_rune } from '../../scope.js';
import * as e from '../../../errors.js';
import { get_parent } from '../../../utils/ast.js';
/**
* @param {CallExpression} node
* @param {Context} context
*/
export function CallExpression(node, context) {
const parent = /** @type {SvelteNode} */ (get_parent(context.path, -1));
const rune = get_rune(node, context.state.scope);
switch (rune) {
case null:
break;
case '$bindable':
if (node.arguments.length > 1) {
e.rune_invalid_arguments_length(node, '$bindable', 'zero or one arguments');
}
if (
parent.type !== 'AssignmentPattern' ||
context.path.at(-3)?.type !== 'ObjectPattern' ||
context.path.at(-4)?.type !== 'VariableDeclarator' ||
get_rune(
/** @type {VariableDeclarator} */ (context.path.at(-4)).init,
context.state.scope
) !== '$props'
) {
e.bindable_invalid_location(node);
}
break;
case '$host':
if (node.arguments.length > 0) {
e.rune_invalid_arguments(node, '$host');
} else if (context.state.ast_type === 'module' || !context.state.analysis.custom_element) {
e.host_invalid_placement(node);
}
break;
case '$props':
if (
parent.type !== 'VariableDeclarator' ||
context.state.ast_type !== 'instance' ||
context.state.scope !== context.state.analysis.instance.scope
) {
e.props_invalid_placement(node);
}
break;
case '$state':
case '$state.frozen':
case '$derived':
case '$derived.by':
if (
parent.type !== 'VariableDeclarator' &&
!(parent.type === 'PropertyDefinition' && !parent.static && !parent.computed)
) {
e.state_invalid_placement(node, rune);
}
if ((rune === '$derived' || rune === '$derived.by') && node.arguments.length !== 1) {
e.rune_invalid_arguments_length(node, rune, 'exactly one argument');
} else if (rune === '$state' && node.arguments.length > 1) {
e.rune_invalid_arguments_length(node, rune, 'zero or one arguments');
}
break;
case '$effect':
case '$effect.pre':
if (parent.type !== 'ExpressionStatement') {
e.effect_invalid_placement(node);
}
if (node.arguments.length !== 1) {
e.rune_invalid_arguments_length(node, rune, 'exactly one argument');
}
break;
case '$effect.tracking':
if (node.arguments.length !== 0) {
e.rune_invalid_arguments(node, rune);
}
break;
case '$effect.root':
if (node.arguments.length !== 1) {
e.rune_invalid_arguments_length(node, rune, 'exactly one argument');
}
break;
case '$inspect':
if (node.arguments.length < 1) {
e.rune_invalid_arguments_length(node, rune, 'one or more arguments');
}
break;
case '$inspect().with':
if (node.arguments.length !== 1) {
e.rune_invalid_arguments_length(node, rune, 'exactly one argument');
}
break;
case '$state.snapshot':
if (node.arguments.length !== 1) {
e.rune_invalid_arguments_length(node, rune, 'exactly one argument');
}
break;
case '$state.is':
if (node.arguments.length !== 2) {
e.rune_invalid_arguments_length(node, rune, 'exactly two arguments');
}
break;
}
context.next();
}
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