Struct CheckAverageCostPlugin 

pub struct CheckAverageCostPlugin { /* private fields */ }

Plugin that validates reducing postings against the running average cost for accounts opened with the NONE booking method.

When an account is opened with NONE booking, the ledger author is responsible for lot matching — there is no booker to enforce it. This plugin is a safety net for that case: it verifies that the cost basis used on any reducing leg is within tolerance of the running average cost basis in the account.

Accounts opened with any other booking method (STRICT, STRICT_WITH_SIZE, FIFO, LIFO, HIFO, AVERAGE, …) are skipped — their booker already validates lot matching, so re-checking here would produce false positives (see issue #907). This matches Python beancount’s beancount.plugins.check_average_cost behavior.

Implementations

impl CheckAverageCostPlugin

pub fn new() -> Self

Create with default tolerance (1%).

pub const fn with_tolerance(tolerance: Decimal) -> Self

Create with custom tolerance.

Trait Implementations

impl Default for CheckAverageCostPlugin

fn default() -> Self

Returns the “default value” for a type.

impl NativePlugin for CheckAverageCostPlugin

fn name(&self) -> &'static str

Plugin name.

fn description(&self) -> &'static str

Plugin description.

fn process(&self, input: PluginInput) -> PluginOutput

Process directives and return modified directives + errors.

fn is_synth(&self) -> bool

Whether this plugin synthesizes directives the loader’s Phase::Early validation depends on (e.g. injecting Open directives so account-presence checks see them).