Struct Graph

pub struct Graph { /* private fields */ }

The combined control-flow graph.

Implementations

impl Graph

pub fn new() -> Graph

Creates a new graph.

pub fn merge(&mut self, gcov: Gcov) -> Result<()>

Merges a parsed GCNO/GCDA into the graph.

Errors

• Returns VersionMismatch if a file has a different version than the previous ones merged.
• Returns DuplicatedFunction if the same function is merged twice.
• Returns MissingFunction if a function referred in a GCDA does not exist in the graph.
• Returns CountsMismatch if the number of profiled arcs in a GCDA does not match the corresponding GCNO.

pub fn analyze(&mut self)

Analyzes the graph.

This should be called after all GCNO/GCDAs are merged and before a report is generated.

This method mainly converts the raw arc counts (branch coverage) to block counts (line coverage). If this is not called, the report will be empty.

pub fn report(&self) -> Report

Obtains a coverage report from the graph.

impl Graph

pub fn write_dot<W: Write>( &self, function_name: Symbol, writer: W, ) -> Result<()>

Writes out the graph as Graphvis *.dot format.

This is mainly intended for debugging.

Only functions with name matching the input function_name symbol will be printed. If the function_name is UNKNOWN_SYMBOL, however, all nodes will be printed.

Trait Implementations

impl Clone for Graph

fn clone(&self) -> Graph

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Graph

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

Formats the value using the given formatter.

impl Default for Graph

fn default() -> Graph

Returns the “default value” for a type.