@metamask/ocap-kernel/dist/services/meter-control.cjs.map

OCap kernel core components

{"version":3,"file":"meter-control.cjs","sourceRoot":"","sources":["../../src/services/meter-control.ts"],"names":[],"mappings":";;AAUA,sDAgGC;AAzGD,yCAAsC;AAEtC;;;;;;GAMG;AACH,SAAgB,qBAAqB;IACnC,oCAAoC;IACpC,IAAI,gBAAgB,GAAG,CAAC,CAAC;IAEzB;;;;OAIG;IACH,SAAS,kBAAkB;QACzB,OAAO,gBAAgB,GAAG,CAAC,CAAC;IAC9B,CAAC;IAED;;;;OAIG;IACH,SAAS,eAAe,CAAC,OAAe;QACtC,IAAA,eAAM,EAAC,gBAAgB,KAAK,CAAC,EAAE,OAAO,CAAC,CAAC;IAC1C,CAAC;IAED;;;;OAIG;IACH,SAAS,gBAAgB,CAAC,OAAe;QACvC,IAAA,eAAM,EAAC,gBAAgB,GAAG,CAAC,EAAE,OAAO,CAAC,CAAC;IACxC,CAAC;IAED;;;;;OAKG;IACH,SAAS,kBAAkB,CAAC,KAAoB;QAC9C,gBAAgB,IAAI,CAAC,CAAC;QACtB,IAAI,CAAC;YACH,OAAO,KAAK,EAAE,CAAC;QACjB,CAAC;gBAAS,CAAC;YACT,gBAAgB,IAAI,CAAC,CAAC;QACxB,CAAC;IACH,CAAC;IAED;;;;;OAKG;IACH,KAAK,UAAU,uBAAuB,CACpC,KAAoB;QAEpB,gBAAgB,IAAI,CAAC,CAAC;QACtB,OAAO,OAAO,CAAC,OAAO,EAAE;aACrB,IAAI,CAAC,GAAG,EAAE,CAAC,KAAK,EAAE,CAAC;aACnB,OAAO,CAAC,GAAG,EAAE;YACZ,gBAAgB,IAAI,CAAC,CAAC;QACxB,CAAC,CAAC,CAAC;IACP,CAAC;IAED;;;;;;;;OAQG;IACH,SAAS,SAAS,CAChB,IAAqC;QAErC;;;;;WAKG;QACH,SAAS,OAAO,CAAC,GAAG,IAAe;YACjC,OAAO,kBAAkB,CAAC,GAAG,EAAE,CAAC,IAAI,CAAC,GAAG,IAAI,CAAC,CAAC,CAAC;QACjD,CAAC;QACD,OAAO,MAAM,CAAC,OAAO,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,YAAY,GAAG;QACnB,kBAAkB;QAClB,eAAe;QACf,gBAAgB;QAChB,kBAAkB;QAClB,uBAAuB;QACvB,SAAS;KACV,CAAC;IACF,OAAO,MAAM,CAAC,YAAY,CAAC,CAAC;AAC9B,CAAC","sourcesContent":["import type { MeterControl } from '@agoric/swingset-liveslots';\nimport { assert } from '@endo/errors';\n\n/**\n * Liveslots must be given a MeterControl object so it can turn metering on and\n * off in metered execution environments. We have no metering, so this produces\n * an object that obeys the MeterControl API but doesn't actually do anything.\n *\n * @returns a dummy MeterControl object.\n */\nexport function makeDummyMeterControl(): MeterControl {\n  /** Depth of metering disablement */\n  let meteringDisabled = 0;\n\n  /**\n   * Test if metering is disabled.\n   *\n   * @returns true iff metering is currently off.\n   */\n  function isMeteringDisabled(): boolean {\n    return meteringDisabled > 0;\n  }\n\n  /**\n   * Require metering to be on.\n   *\n   * @param message - Error message to throw if metering is off.\n   */\n  function assertIsMetered(message: string): void {\n    assert(meteringDisabled === 0, message);\n  }\n\n  /**\n   * Require metering to be off.\n   *\n   * @param message - Error message to throw if metering is on.\n   */\n  function assertNotMetered(message: string): void {\n    assert(meteringDisabled > 0, message);\n  }\n\n  /**\n   * Execute a thunk with metering off.\n   *\n   * @param thunk - The thunk to execute.\n   * @returns whatever `thunk` returns.\n   */\n  function runWithoutMetering(thunk: () => unknown): unknown {\n    meteringDisabled += 1;\n    try {\n      return thunk();\n    } finally {\n      meteringDisabled -= 1;\n    }\n  }\n\n  /**\n   * Execute an aynchronous thunk with metering off.\n   *\n   * @param thunk - The thunk to execute.\n   * @returns a promise for whatever `thunk` returns.\n   */\n  async function runWithoutMeteringAsync(\n    thunk: () => unknown,\n  ): Promise<unknown> {\n    meteringDisabled += 1;\n    return Promise.resolve()\n      .then(() => thunk())\n      .finally(() => {\n        meteringDisabled -= 1;\n      });\n  }\n\n  /**\n   * Return a version of func that runs outside metering.  Since we have no\n   * metering, everything actually runs outside metering, so func itself would\n   * do, but we need to wrap it anyway to account for the nesting depth of\n   * metering disablement.\n   *\n   * @param func - The function to wrap.\n   * @returns A version of `func` that runs without being metered.\n   */\n  function unmetered(\n    func: (...args: unknown[]) => unknown,\n  ): (...args: unknown[]) => unknown {\n    /**\n     * A version of `func` with `runWithoutMetering` wrapped around it.\n     *\n     * @param args - The args to `func`.\n     * @returns whatever `func` returns.\n     */\n    function wrapped(...args: unknown[]): unknown {\n      return runWithoutMetering(() => func(...args));\n    }\n    return harden(wrapped);\n  }\n\n  const meterControl = {\n    isMeteringDisabled,\n    assertIsMetered,\n    assertNotMetered,\n    runWithoutMetering,\n    runWithoutMeteringAsync,\n    unmetered,\n  };\n  return harden(meterControl);\n}\n"]}