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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 | 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 197x 197x 197x 197x 197x 197x 1x 197x 1x 1x 1x 1x 1x 1x 1x 1x 1x 196x 197x 196x 196x 197x 194x 197x 146x 146x 146x 146x 127x 127x 146x 67x 67x 67x 67x 197x 197x 197x 197x 197x 197x 197x 197x 197x 197x 197x 197x 197x 197x 197x 197x 197x 197x 197x | /** @import { Expression, Node, Pattern, Statement, UpdateExpression } from 'estree' */
/** @import { Context } from '../types' */
import { is_ignored } from '../../../../state.js';
import { object } from '../../../../utils/ast.js';
import * as b from '../../../../utils/builders.js';
/**
* @param {UpdateExpression} node
* @param {Context} context
*/
export function UpdateExpression(node, context) {
const argument = node.argument;
if (
argument.type === 'MemberExpression' &&
argument.object.type === 'ThisExpression' &&
argument.property.type === 'PrivateIdentifier' &&
context.state.private_state.has(argument.property.name)
) {
let fn = '$.update';
if (node.prefix) fn += '_pre';
/** @type {Expression[]} */
const args = [argument];
if (node.operator === '--') {
args.push(b.literal(-1));
}
return b.call(fn, ...args);
}
if (argument.type !== 'Identifier' && argument.type !== 'MemberExpression') {
throw new Error('An impossible state was reached');
}
const left = object(argument);
if (left === null) return context.next();
if (left === argument) {
const transform = context.state.transform;
const update = transform[left.name]?.update;
if (update && Object.hasOwn(transform, left.name)) {
return update(node);
}
}
const assignment = /** @type {Expression} */ (
context.visit(
b.assignment(
node.operator === '++' ? '+=' : '-=',
/** @type {Pattern} */ (argument),
b.literal(1)
)
)
);
const parent = /** @type {Node} */ (context.path.at(-1));
const is_standalone = parent.type === 'ExpressionStatement'; // TODO and possibly others, but not e.g. the `test` of a WhileStatement
const update =
node.prefix || is_standalone
? assignment
: b.binary(node.operator === '++' ? '-' : '+', assignment, b.literal(1));
return is_ignored(node, 'ownership_invalid_mutation')
? b.call('$.skip_ownership_validation', b.thunk(update))
: update;
}
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