Enum RowOrigin 

pub enum RowOrigin {
    Numbered {
        list: String,
        number: usize,
        under: Option<Arc<str>>,
    },
    Written {
        instance: SpecInstance,
        source: Source,
    },
    Import {
        alias: Arc<str>,
    },
    Inline {
        node: NormalFormId,
        position: usize,
    },
}

Where a row instance came from. Names missing fields and explanations.

Variants

Numbered

Row number (1-based) of list list: a run-data row. under is the evaluation-data key of the run-data row whose list it is (items.1); None for a list of the request’s plan.

Fields

list: String

number: usize

under: Option<Arc<str>>

Written

A row written in the spec at source, read through the row spec’s template plan. The instance names it relative to the plan holding its list (staff.2).

Fields

instance: SpecInstance

source: Source

Import

The row of uses alias, named relative to the plan declaring it.

Fields

alias: Arc<str>

Inline

Row written inline by the -> with field: value command at cell node, as row position (1-based) of its result. Its written fields are values of the plan that holds the command and are read as that plan planned them; the row spec’s rules run over them in the row’s context. Every field a read names is set: planning rejects reads of unset fields.

Fields

node: NormalFormId

position: usize

Trait Implementations

impl Clone for RowOrigin

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RowOrigin

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

Formats the value using the given formatter.

impl Display for RowOrigin

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

Formats the value using the given formatter.

impl Eq for RowOrigin

impl Hash for RowOrigin

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 PartialEq for RowOrigin

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for RowOrigin