@eagleoutice/flowr/util/json.js

Static Dataflow Analyzer and Program Slicer for the R Programming Language

"use strict";
// to get the types within JSON.stringify
Object.defineProperty(exports, "__esModule", { value: true });
exports.jsonReplacer = jsonReplacer;
exports.jsonBigIntRetriever = jsonBigIntRetriever;
exports.superBigJsonStringify = superBigJsonStringify;
const environment_1 = require("../dataflow/environments/environment");
/**
 * This is flowR's custom JSON replacer, used to stringify flowR-internal structures.
 * @see {@link jsonBigIntRetriever}
 * @see {@link superBigJsonStringify}
 */
function jsonReplacer(key, value) {
    if (key === 'fullLexeme') {
        return undefined;
    }
    else if (value instanceof Map || value instanceof Set) {
        return [...value];
    }
    else if (typeof value === 'bigint') {
        return `${value.toString()}n`;
    }
    else {
        return value;
    }
}
/**
 * This is flowR's custom JSON retriever, used to parse flowR-internal structures.
 * @see {@link jsonReplacer}
 * @see {@link superBigJsonStringify}
 */
function jsonBigIntRetriever(key, value) {
    if (typeof value === 'string' && value.endsWith('n')) {
        return BigInt(value.slice(0, -1));
    }
    else {
        return value;
    }
}
/**
 * Stringifies potentially very large objects to JSON, sending chunks to the provided send function.
 */
function superBigJsonStringify(obj, end, send) {
    try {
        const tryOut = JSON.stringify(obj, jsonReplacer) + end;
        send(tryOut);
    }
    catch {
        /* let's try the sad path! */
        const remainder = bigStringify(obj, '', send);
        send(remainder + end);
    }
}
function bigStringify(obj, current, send) {
    if (current.length > 20_000) {
        send(current);
        current = '';
    }
    if (obj === undefined || obj === null) {
        return current + 'null';
    }
    else if ((0, environment_1.isDefaultBuiltInEnvironment)(obj)) {
        return current + '<BuiltInEnvironment>';
    }
    else if (Array.isArray(obj)) {
        let str = current + '[';
        for (let i = 0; i < obj.length; i++) {
            if (i > 0) {
                str += ',';
            }
            str = bigStringify(obj[i], str, send);
            if (str.length > 20_000) {
                send(str);
                str = '';
            }
        }
        return str + ']';
    }
    else if (obj instanceof Map || obj instanceof Set) {
        let str = current + '[';
        let i = 0;
        for (const value of obj) {
            if (i++ > 0) {
                str += ',';
            }
            str = bigStringify(value, str, send);
            if (str.length > 20_000) {
                send(str);
                str = '';
            }
        }
        return str + ']';
    }
    else if (typeof obj === 'bigint') {
        return current + `${obj.toString()}n`;
    }
    else if (obj instanceof Date) {
        return current + `"${obj.toISOString()}"`;
    }
    else if (obj instanceof RegExp) {
        return current + `"${obj.toString()}"`;
    }
    else if (typeof obj === 'object') {
        let str = current + '{';
        let i = 0;
        for (const key in obj) {
            if (Object.hasOwn(obj, key)) {
                // @ts-expect-error - We know that obj[key] is not undefined, it its own property
                const value = obj[key];
                if (value === undefined || typeof value === 'function' || typeof value === 'symbol' || key === 'info') {
                    continue;
                }
                if (i++ > 0) {
                    str += ',';
                }
                str += `"${key}":`;
                str = bigStringify(value, str, send);
                if (str.length > 20_000) {
                    send(str);
                    str = '';
                }
            }
        }
        return str + '}';
    }
    else if (typeof obj === 'function' || typeof obj === 'symbol') {
        return current + 'null'; // Optionally skip functions and symbols
    }
    else {
        return current + JSON.stringify(obj, environment_1.builtInEnvJsonReplacer);
    }
}
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