proc cardSet(conf: ConfigRef; a: PNode): BiggestInt {.
    ...raises: [Exception, ValueError, KeyError, IOError, ERecoverableError], tags: [
    RootEffect, ReadDirEffect, WriteIOEffect, ReadIOEffect, ReadEnvEffect],
    forbids: [].}

proc complement(conf: ConfigRef; a: PNode): PNode {.
    ...raises: [Exception, ValueError, KeyError, IOError, ERecoverableError], tags: [
    RootEffect, ReadDirEffect, WriteIOEffect, ReadIOEffect, ReadEnvEffect],
    forbids: [].}

proc containsSets(conf: ConfigRef; a, b: PNode): bool {.
    ...raises: [Exception, ValueError, KeyError, IOError, ERecoverableError], tags: [
    RootEffect, ReadDirEffect, WriteIOEffect, ReadIOEffect, ReadEnvEffect],
    forbids: [].}

proc deduplicate(conf: ConfigRef; a: PNode): PNode {.
    ...raises: [Exception, ValueError, KeyError, IOError, ERecoverableError], tags: [
    RootEffect, ReadDirEffect, WriteIOEffect, ReadIOEffect, ReadEnvEffect],
    forbids: [].}

proc diffSets(conf: ConfigRef; a, b: PNode): PNode {.
    ...raises: [Exception, ValueError, KeyError, IOError, ERecoverableError], tags: [
    RootEffect, ReadDirEffect, WriteIOEffect, ReadIOEffect, ReadEnvEffect],
    forbids: [].}

proc emptyRange(a, b: PNode): bool {....raises: [ERecoverableError], tags: [],
                                     forbids: [].}

proc equalSets(conf: ConfigRef; a, b: PNode): bool {.
    ...raises: [Exception, ValueError, KeyError, IOError, ERecoverableError], tags: [
    RootEffect, ReadDirEffect, WriteIOEffect, ReadIOEffect, ReadEnvEffect],
    forbids: [].}

proc inSet(s: PNode; elem: PNode): bool {....raises: [ERecoverableError], tags: [],
    forbids: [].}

proc intersectSets(conf: ConfigRef; a, b: PNode): PNode {.
    ...raises: [Exception, ValueError, KeyError, IOError, ERecoverableError], tags: [
    RootEffect, ReadDirEffect, WriteIOEffect, ReadIOEffect, ReadEnvEffect],
    forbids: [].}

proc overlap(a, b: PNode): bool {....raises: [ERecoverableError], tags: [],
                                  forbids: [].}

proc setHasRange(s: PNode): bool {....raises: [], tags: [], forbids: [].}

proc someInSet(s: PNode; a, b: PNode): bool {....raises: [ERecoverableError],
    tags: [], forbids: [].}

proc symdiffSets(conf: ConfigRef; a, b: PNode): PNode {.
    ...raises: [Exception, ValueError, KeyError, IOError, ERecoverableError], tags: [
    RootEffect, ReadDirEffect, WriteIOEffect, ReadIOEffect, ReadEnvEffect],
    forbids: [].}

proc toBitSet(conf: ConfigRef; s: PNode): TBitSet {.
    ...raises: [Exception, ValueError, KeyError, IOError, ERecoverableError], tags: [
    RootEffect, ReadDirEffect, WriteIOEffect, ReadIOEffect, ReadEnvEffect],
    forbids: [].}

proc toTreeSet(conf: ConfigRef; s: TBitSet; settype: PType; info: TLineInfo): PNode {.
    ...raises: [Exception, ValueError, KeyError, IOError, ERecoverableError], tags: [
    RootEffect, ReadDirEffect, WriteIOEffect, ReadIOEffect, ReadEnvEffect],
    forbids: [].}

proc unionSets(conf: ConfigRef; a, b: PNode): PNode {.
    ...raises: [Exception, ValueError, KeyError, IOError, ERecoverableError], tags: [
    RootEffect, ReadDirEffect, WriteIOEffect, ReadIOEffect, ReadEnvEffect],
    forbids: [].}