Struct FieldDiff 

pub struct FieldDiff {
    changed: Vec<FieldChange>,
    same: Vec<&'static str>,
}

Fields compared on one resource, split into those that differ and those that already match.

Fields

changed: Vec<FieldChange>

same: Vec<&'static str>

Implementations

impl FieldDiff

pub fn check<'a, O: Facet<'a>, N: Facet<'a>>( &mut self, name: &'static str, equal: bool, old: &O, new: &N, ) -> bool

Note one compared field and return whether it differs.

pub fn compare<'a, T: Facet<'a> + PartialEq>( &mut self, name: &'static str, old: Option<&'a T>, new: &T, ) -> bool

Compare one field with its live value, if the resource exists.

pub fn want<'a, T, D, L>( &mut self, name: &'static str, desired: D, live: L, ) -> Option<T>

where T: Facet<'a> + Clone + PartialEq, D: Into<Option<&'a T>>, L: Into<Option<&'a T>>,

Compare a declared field with its live value.

Returns the value to write when the field is declared and differs. An undeclared field is not compared.

pub fn want_set( &mut self, name: &'static str, desired: &NameSet, live: Option<&NameSet>, ) -> Option<NameSet>

Compare a declared set with its live value. A missing live value is the empty set.

Returns the set to write when it differs.

pub const fn has_changes(&self) -> bool

Whether any compared field differs.

pub fn record(self, resource: &str, report: &mut Report)

Add the compared fields to report under resource, in name order.

Trait Implementations

impl Clone for FieldDiff

fn clone(&self) -> FieldDiff

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FieldDiff

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

Formats the value using the given formatter.

impl Default for FieldDiff

fn default() -> FieldDiff

Returns the “default value” for a type.