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 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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 | 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 5668x 5668x 5668x 5668x 5668x 5668x 3775x 1242x 1242x 3775x 3775x 5668x 5668x 63x 1x 1x 62x 62x 62x 63x 63x 62x 62x 62x 62x 63x 2x 2x 60x 60x 5668x 5668x 2x 2x 2x 2x 5668x 5668x 290x 1x 1x 289x 289x 289x 289x 289x 290x 288x 290x 2x 2x 287x 290x 1x 1x 286x 286x 5668x 5668x 5668x 5668x 5668x 1273x 1273x 136x 1273x 5x 5x 1268x 1273x 2x 1273x 2x 2x 1264x 1264x 5668x 5668x 5668x 184x 2x 2x 182x 182x 2x 2x 180x 180x 180x 180x 180x 180x 5668x 5668x 10x 10x 10x 5668x 5668x 15x 15x 15x 5668x 5668x 39x 39x 39x 5668x 5668x 4x 4x 4x 5668x 5668x 13x 1x 1x 12x 12x 5668x 5645x 5668x 171x 171x 171x 171x 171x 171x 171x 2x 2x 171x 5645x 5668x 3509x 3509x 3509x 1701x 1701x 3509x 5645x 5645x 5668x 202x 5668x 5443x 5443x 5641x 5668x 1132x 1132x 1132x 1132x 1132x 1031x 1031x 1031x 1132x 5668x | /** @import { CallExpression, VariableDeclarator } from 'estree' */
/** @import { AST, SvelteNode } from '#compiler' */
/** @import { Context } from '../types' */
import { get_rune } from '../../scope.js';
import * as e from '../../../errors.js';
import { get_parent, unwrap_optional } from '../../../utils/ast.js';
import { is_pure, is_safe_identifier } from './shared/utils.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:
if (!is_safe_identifier(node.callee, context.state.scope)) {
context.state.analysis.needs_context = true;
}
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 (context.state.has_props_rune) {
e.props_duplicate(node);
}
context.state.has_props_rune = true;
if (
parent.type !== 'VariableDeclarator' ||
context.state.ast_type !== 'instance' ||
context.state.scope !== context.state.analysis.instance.scope
) {
e.props_invalid_placement(node);
}
if (node.arguments.length > 0) {
e.rune_invalid_arguments(node, rune);
}
break;
case '$state':
case '$state.raw':
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 '$effect.pre':
if (parent.type !== 'ExpressionStatement') {
e.effect_invalid_placement(node);
}
if (node.arguments.length !== 1) {
e.rune_invalid_arguments_length(node, rune, 'exactly one argument');
}
// `$effect` needs context because Svelte needs to know whether it should re-run
// effects that invalidate themselves, and that's determined by whether we're in runes mode
context.state.analysis.needs_context = true;
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 '$state.snapshot':
if (node.arguments.length !== 1) {
e.rune_invalid_arguments_length(node, rune, 'exactly one argument');
}
break;
}
if (context.state.render_tag) {
// Find out which of the render tag arguments contains this call expression
const arg_idx = unwrap_optional(context.state.render_tag.expression).arguments.findIndex(
(arg) => arg === node || context.path.includes(arg)
);
// -1 if this is the call expression of the render tag itself
if (arg_idx !== -1) {
context.state.render_tag.metadata.args_with_call_expression.add(arg_idx);
}
}
if (node.callee.type === 'Identifier') {
const binding = context.state.scope.get(node.callee.name);
if (binding !== null) {
binding.is_called = true;
}
}
// `$inspect(foo)` or `$derived(foo) should not trigger the `static-state-reference` warning
if (rune === '$inspect' || rune === '$derived') {
context.next({ ...context.state, function_depth: context.state.function_depth + 1 });
} else {
context.next();
}
if (context.state.expression) {
// TODO We assume that any dependencies are stateful, which isn't necessarily the case — see
// https://github.com/sveltejs/svelte/issues/13266. This check also includes dependencies
// outside the call expression itself (e.g. `{blah && pure()}`) resulting in additional
// false positives, but for now we accept that trade-off
if (!is_pure(node.callee, context) || context.state.expression.dependencies.size > 0) {
context.state.expression.has_call = true;
context.state.expression.has_state = true;
}
}
}
|