Struct rustc_mir::transform::coverage::debug::DebugCounters

pub(in transform::coverage) struct DebugCounters {
    some_counters: Option<FxHashMap<ExpressionOperandId, DebugCounter>>,
}

If enabled, this struct maintains a map from CoverageKind IDs (as ExpressionOperandId) to the CoverageKind data and optional label (normally, the counter's associated BasicCoverageBlock format string, if any).

Use format_counter to convert one of these CoverageKind counters to a debug output string, as directed by the DebugOptions. This allows the format of counter labels in logs and dump files (including the CoverageGraph graphviz file) to be changed at runtime, via environment variable.

DebugCounters supports a recursive rendering of Expression counters, so they can be presented as nested expressions such as (bcb3 - (bcb0 + bcb1)).

Fields

some_counters: Option<FxHashMap<ExpressionOperandId, DebugCounter>>

Implementations

impl DebugCounters

pub fn new() -> Self

pub fn enable(&mut self)

pub fn is_enabled(&self) -> bool

pub fn add_counter(
    &mut self,
    counter_kind: &CoverageKind,
    some_block_label: Option<String>
)

pub fn some_block_label(&self, operand: ExpressionOperandId) -> Option<&String>

pub fn format_counter(&self, counter_kind: &CoverageKind) -> String

pub(in transform::coverage::debug) fn format_counter_kind(
    &self,
    counter_kind: &CoverageKind
) -> String

pub(in transform::coverage::debug) fn format_operand(
    &self,
    operand: ExpressionOperandId
) -> String