import { Struct } from './struct';
import { ErrorOnLine, load } from './loader';

// Track Mode
let allowCpp = false;
export function isCppAllowed() {
    return allowCpp;
}
export function setCppAllowed(newMode: boolean) {
    clearStructures();
    allowCpp = newMode;
}

// Store Loaded Structures
const structures: {[id: string]: Struct} = {};

// Get Or Load Structure
export function getStructure(name: string) {
    if (Object.prototype.hasOwnProperty.call(structures, name)) {
        // Already Loaded
        return structures[name]!;
    } else {
        // Load Structure
        try {
            // Create Structure
            const target = new Struct(name);
            structures[name] = target;
            // Parse File
            load(target, name, false);
            // Return
            return target;
        } catch (e) {
            let error = e;
            let extra = '';
            if (e instanceof ErrorOnLine) {
                extra = `${e.file}:${e.line}: `;
                error = e.error;
            }
            console.log(`Error Loading ${name}: ${extra}${error instanceof Error ? error.stack : error}`);
            process.exit(1);
        }
    }
}

// Clear Loaded Structures
function clearStructures() {
    for (const name in structures) {
        if (Object.prototype.hasOwnProperty.call(structures, name)) {
            delete structures[name];
        }
    }    
}