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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 | 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 14620x 14620x 14620x 14620x 58394x 759897x 759897x 759897x 58394x 14620x 14620x 14620x 14620x 14620x 14620x 579646x 579646x 579646x 579646x 579646x 579646x 579646x 393561x 393561x 393561x 393561x 393561x 1060005x 1060005x 666725x 666725x 666725x 666725x 666725x 666725x 666725x 666725x 308396x 308396x 308396x 666725x 666725x 1060005x 358048x 358048x 1060005x 393561x 393561x 393561x 579646x 579646x 579646x 579646x 14620x 14620x 14620x | const overrides = {
visit() {
throw new Error('Cannot call visit() during analysis');
},
stop() {
throw new Error('Cannot call stop() during analysis');
}
};
/**
* @template {{ type: string }} T
* @template U
* @param {...import('zimmerframe').Visitors<T, U>} tasks
* @returns
*/
export function merge(...tasks) {
/** @type {Record<string, any[]>} */
const visitors = {};
for (const task of tasks) {
for (const key in task) {
if (!visitors[key]) visitors[key] = [];
visitors[key].push(task[key]);
}
}
/** @type {import('zimmerframe').Visitors<T, U>} */
// @ts-expect-error
const combined = {};
for (const key in visitors) {
const fns = visitors[key];
/**
* @param {T} node
* @param {import('zimmerframe').Context<T, U>} context
*/
function visitor(node, context) {
/**
* @param {number} i
* @param {U} state
*/
function go(i, state) {
const fn = fns[i];
if (!fn) return context.next(state);
let called_next = false;
fn(node, {
...context,
...overrides,
state,
next(next_state = state) {
called_next = true;
go(i + 1, next_state);
}
});
if (!called_next) {
go(i + 1, state);
}
}
go(0, context.state);
}
// @ts-expect-error
combined[key] = visitor;
}
return combined;
}
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