Struct mz_expr::relation::LetRecLimit

pub struct LetRecLimit {
    pub max_iters: NonZeroU64,
    pub return_at_limit: bool,
}

Maximum iterations for a LetRec.

Fields

max_iters: NonZeroU64

Maximum number of iterations to evaluate.

return_at_limit: bool

Whether to throw an error when reaching the above limit. If true, we simply use the current contents of each Id as the final result.

Implementations

impl LetRecLimit

pub fn min_max_iter(limits: &Vec<Option<LetRecLimit>>) -> Option<u64>

Compute the smallest limit from a Vec of LetRecLimits.

pub const RETURN_AT_LIMIT_DEFAULT: bool = false

The default value of LetRecLimit::return_at_limit when using the RECURSION LIMIT option of WMR without ERROR AT or RETURN AT.

Trait Implementations

impl Arbitrary for LetRecLimit

type Parameters = (<NonZero<u64> as Arbitrary>::Parameters, <bool as Arbitrary>::Parameters)

The type of parameters that arbitrary_with accepts for configuration of the generated Strategy. Parameters must implement Default.

type Strategy = Map<(<NonZero<u64> as Arbitrary>::Strategy, <bool as Arbitrary>::Strategy), fn(_: (NonZero<u64>, bool)) -> LetRecLimit>

The type of Strategy used to generate values of type Self.

fn arbitrary_with(_top: Self::Parameters) -> Self::Strategy

Generates a Strategy for producing arbitrary values of type the implementing type (Self). The strategy is passed the arguments given in args.

fn arbitrary() -> Self::Strategy

Generates a Strategy for producing arbitrary values of type the implementing type (Self).

impl Clone for LetRecLimit

fn clone(&self) -> LetRecLimit

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for LetRecLimit

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for LetRecLimit

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for LetRecLimit

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Hash for LetRecLimit

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for LetRecLimit

fn cmp(&self, other: &LetRecLimit) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized + PartialOrd,

Restrict a value to a certain interval.

impl PartialEq for LetRecLimit

fn eq(&self, other: &LetRecLimit) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for LetRecLimit

fn partial_cmp(&self, other: &LetRecLimit) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for LetRecLimit

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for LetRecLimit

impl Eq for LetRecLimit

impl StructuralPartialEq for LetRecLimit