@struktoai/mirage-core/dist/workspace/executor/builtins/eval/eval.js

A Unified Virtual Filesystem For AI Agents

// ========= Copyright 2026 @ Strukto.AI All Rights Reserved. =========
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// ========= Copyright 2026 @ Strukto.AI All Rights Reserved. =========
import { CallStack } from "../../../../shell/call_stack.js";
import { ExitSignal } from "../../../../shell/errors.js";
import { ExecutionNode } from "../../../types.js";
/**
 * Run the words as a line of the caller's own: in its frame, so `$1`,
 * `local`, `shift` and `return` act on the function the caller is in, and
 * a `break`, `continue` or `exit` on its loops and shell. Mirrors Python's
 * handle_eval.
 */
export async function handleEval(executeFn, args, session, stdin = null, sink, callStack = new CallStack(session.shellNesting)) {
    const script = args.join(' ');
    let io;
    try {
        io = await callStack.nested('eval', () => executeFn(script, {
            sessionId: session.sessionId,
            stdin,
            callStack,
            ...(sink === undefined ? {} : { sink }),
        }));
    }
    catch (err) {
        if (err instanceof ExitSignal)
            err.sourced = true;
        throw err;
    }
    return [io.stdout, io, new ExecutionNode({ command: 'eval', exitCode: io.exitCode })];
}
/** The `eval` arm. */
export async function evalBuiltin(call) {
    return handleEval(call.executeFn, [...call.argv.args], call.context.session, call.stdin, call.sink, call.callStack ?? undefined);
}
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