Struct TableOptions 

pub struct TableOptions {
    pub columns: Option<Vec<String>>,
    pub header: HeaderMode,
}

Per-invocation tabular options resolved from the CLI flags by FormatArgs::table_options() (step 4). Lives here so it can be construction-time validated (syntax only — unknown-name validation happens inside the engine where the per-noun column set is known).

Default gives the unflagged behaviour: all columns, header on.

Fields

columns: Option<Vec<String>>

User-supplied --columns selection, validated for syntax by table_options(): non-empty, no blank segments, no duplicates. None means the flag was not supplied.

header: HeaderMode

Resolved header mode. On is the unflagged default.

Implementations

impl TableOptions

pub fn projected(&self) -> Option<Vec<&str>>

Borrow the column projection as Option<Vec<&str>>, ready to pass to TableSpec::projected.

Returns None when --columns was not supplied (engine falls through to default_columns or all_columns). Returns Some(vec) when the flag was supplied; each element borrows from self.columns.

Trait Implementations

impl Debug for TableOptions

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

Formats the value using the given formatter.

impl Default for TableOptions

fn default() -> TableOptions

Returns the “default value” for a type.