Struct mz_expr::explain::HumanizedExpr

pub struct HumanizedExpr<'a, T, M = HumanizedExplain> {
    pub expr: &'a T,
    pub cols: Option<&'a Vec<String>>,
    pub mode: M,
}

A helper struct for wrapping expressions whose text output is modulated by the presence of some local (inferred schema) or global (required redaction) context.

Fields

expr: &'a T

The expression to be humanized.

cols: Option<&'a Vec<String>>

An optional vector of inferred column names to be used when rendering column references in expr.

mode: M

The rendering mode to use. See HumanizerMode for details.

Implementations

impl<'a, T, M: HumanizerMode> HumanizedExpr<'a, T, M>

pub fn child<U>(&self, expr: &'a U) -> HumanizedExpr<'a, U, M>

Wrap the given child expr into a HumanizedExpr using the same cols and mode as self.

Trait Implementations

impl<'a, T: Clone, M: Clone> Clone for HumanizedExpr<'a, T, M>

fn clone(&self) -> HumanizedExpr<'a, T, M>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'a, T: Debug, M: Debug> Debug for HumanizedExpr<'a, T, M>

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

Formats the value using the given formatter.

impl<'a, M> Display for HumanizedExpr<'a, AggregateExpr, M>

where M: HumanizerMode,

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

Formats the value using the given formatter.

impl<'a, M> Display for HumanizedExpr<'a, AggregateFunc, M>

where M: HumanizerMode,

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

Formats the value using the given formatter.

impl<'a, M> Display for HumanizedExpr<'a, ColumnOrder, M>

where M: HumanizerMode,

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

Formats the value using the given formatter.

impl<'a, M> Display for HumanizedExpr<'a, Datum<'a>, M>

where M: HumanizerMode,

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

Formats the value using the given formatter.

impl<'a, M> Display for HumanizedExpr<'a, MirScalarExpr, M>

where M: HumanizerMode,

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

Formats the value using the given formatter.

impl<'a, M> Display for HumanizedExpr<'a, Result<Row, EvalError>, M>

where M: HumanizerMode,

Render a literal value represented as a single-element Row or an EvalError.

The default implemntation calls HumanizerMode::humanize_datum for the former and handles the error case (including redaction) directly for the latter.

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

Formats the value using the given formatter.

impl<'a, M> Display for HumanizedExpr<'a, Row, M>

where M: HumanizerMode,

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

Formats the value using the given formatter.

impl<'a, M> Display for HumanizedExpr<'a, usize, M>

where M: HumanizerMode,

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

Formats the value using the given formatter.

impl<'a, 'h, C, M> DisplayText<C> for HumanizedExpr<'a, ExplainSource<'a>, M>

where C: AsMut<Indent> + AsRef<&'h dyn ExprHumanizer>, M: HumanizerMode,

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

impl<'a, C, M> DisplayText<C> for HumanizedExpr<'a, MapFilterProject, M>

where C: AsMut<Indent>, M: HumanizerMode,

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

impl<'a, C, M> DisplayText<C> for HumanizedExpr<'a, PushdownInfo<'a>, M>

where C: AsMut<Indent>, M: HumanizerMode,

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

impl<'a, C, M> DisplayText<C> for HumanizedExpr<'a, RowSetFinishing, M>

where C: AsMut<Indent>, M: HumanizerMode,

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

impl<'a, M> ScalarOps for HumanizedExpr<'a, MirScalarExpr, M>

fn match_col_ref(&self) -> Option<usize>

fn references(&self, col_ref: usize) -> bool

impl<'a, M> ScalarOps for HumanizedExpr<'a, usize, M>

fn match_col_ref(&self) -> Option<usize>

fn references(&self, col_ref: usize) -> bool