@struktoai/mirage-core/dist/shell/parse/scope.js

A Unified Virtual Filesystem For AI Agents

import { parseProgram } from "./parse.js";
/** A line and its asynchronous jobs share ownership of incidental parses. */
export class ParseScope {
    references = 1;
    programs = [];
    released = false;
    parse(command, aliases = new Set(), extglob = true) {
        if (this.references === 0)
            throw new Error('parse scope is released');
        const program = parseProgram(command, aliases, extglob);
        this.programs.push(program);
        return program.root;
    }
    fork() {
        return new ParseScope();
    }
    retain() {
        if (this.references === 0)
            throw new Error('parse scope is released');
        this.references += 1;
        let released = false;
        return () => {
            if (released)
                return;
            released = true;
            this.drop();
        };
    }
    release() {
        if (this.released)
            return;
        this.released = true;
        this.drop();
    }
    drop() {
        this.references -= 1;
        if (this.references !== 0)
            return;
        for (const program of this.programs)
            program.release();
        this.programs.length = 0;
    }
}
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