calcium-lang/dist/command/return.js

Calcium language interpreter

import { evaluate } from "../util";
import { None } from "../factory";
import { Kind } from "../runtime/block";
/**
 * return an expression, if any (default `None`)
 */
export default class Return {
    constructor(expr) {
        this.expr = expr;
    }
    execute(env) {
        var _a;
        env.returnedValue = evaluate((_a = this.expr) !== null && _a !== void 0 ? _a : None, env);
        while (true) {
            const block = env.lastBlock;
            switch (block.kind) {
                case Kind.Call:
                    block.exit(env);
                    return;
                default:
                    env.blocks.pop();
                    continue;
            }
        }
    }
}
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