# Struct rustc_codegen_llvm::coverageinfo::ffi::CounterMappingRegion

source ·

    #[repr(C)]pub struct CounterMappingRegion {
        counter: Counter,
        false_counter: Counter,
        file_id: u32,
        expanded_file_id: u32,
        start_line: u32,
        start_col: u32,
        end_line: u32,
        end_col: u32,
        kind: RegionKind,
    }

Expand description

This struct provides LLVM’s representation of a “CoverageMappingRegion”, encoded into the coverage map, in accordance with the LLVM Code Coverage Mapping Format. The struct composes fields representing the `Counter` type and value(s) (injected counter ID, or expression type and operands), the source file (an indirect index into a “filenames array”, encoded separately), and source location (start and end positions of the represented code region).

Corresponds to struct `llvm::coverage::CounterMappingRegion`.

Must match the layout of `LLVMRustCounterMappingRegion`.

## Fields§

§`counter: Counter`

The counter type and type-dependent counter data, if any.

§`false_counter: Counter`

If the `RegionKind` is a `BranchRegion`, this represents the counter for the false branch of the region.

§`file_id: u32`

An indirect reference to the source filename. In the LLVM Coverage Mapping Format, the file_id is an index into a function-specific `virtual_file_mapping` array of indexes that, in turn, are used to look up the filename for this region.

§`expanded_file_id: u32`

If the `RegionKind` is an `ExpansionRegion`, the `expanded_file_id` can be used to find the mapping regions created as a result of macro expansion, by checking if their file id matches the expanded file id.

§`start_line: u32`

1-based starting line of the mapping region.

§`start_col: u32`

1-based starting column of the mapping region.

§`end_line: u32`

1-based ending line of the mapping region.

§`end_col: u32`

1-based ending column of the mapping region. If the high bit is set, the current mapping region is a gap area.

§`kind: RegionKind`

## Implementations§

source§

### impl CounterMappingRegion

source

#### pub(crate) fn code_region( counter: Counter, file_id: u32, start_line: u32, start_col: u32, end_line: u32, end_col: u32 ) -> Self

source

#### pub(crate) fn branch_region( counter: Counter, false_counter: Counter, file_id: u32, start_line: u32, start_col: u32, end_line: u32, end_col: u32 ) -> Self

source

#### pub(crate) fn expansion_region( file_id: u32, expanded_file_id: u32, start_line: u32, start_col: u32, end_line: u32, end_col: u32 ) -> Self

source

#### pub(crate) fn skipped_region( file_id: u32, start_line: u32, start_col: u32, end_line: u32, end_col: u32 ) -> Self

source

#### pub(crate) fn gap_region( counter: Counter, file_id: u32, start_line: u32, start_col: u32, end_line: u32, end_col: u32 ) -> Self

## Trait Implementations§

source§

### impl Clone for CounterMappingRegion

source§

#### fn clone(&self) -> CounterMappingRegion

Returns a copy of the value. Read more
1.0.0 · source§

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

Performs copy-assignment from `source`. Read more
source§

### impl Debug for CounterMappingRegion

source§

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

Formats the value using the given formatter. Read more
source§

### impl Copy for CounterMappingRegion

## Auto Trait Implementations§

§

### impl RefUnwindSafe for CounterMappingRegion

§

### impl Send for CounterMappingRegion

§

### impl Sync for CounterMappingRegion

§

### impl Unpin for CounterMappingRegion

§

### impl UnwindSafe for CounterMappingRegion

## Blanket Implementations§

source§

### impl<T> Any for T
where T: 'static + ?Sized,

source§

#### fn type_id(&self) -> TypeId

Gets the `TypeId` of `self`. Read more
source§

### impl<T> Borrow<T> for T
where T: ?Sized,

source§

#### fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
source§

### impl<T> BorrowMut<T> for T
where T: ?Sized,

source§

#### fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
source§

### impl<T> From<T> for T

source§

#### fn from(t: T) -> T

Returns the argument unchanged.

source§

### impl<T, U> Into<U> for T
where U: From<T>,

source§

#### fn into(self) -> U

Calls `U::from(self)`.

That is, this conversion is whatever the implementation of `From<T> for U` chooses to do.

source§

### impl<T> ToOwned for T
where T: Clone,

§

#### type Owned = T

The resulting type after obtaining ownership.
source§

#### fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
source§

#### fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
source§

### impl<T, U> TryFrom<U> for T
where U: Into<T>,

§

#### type Error = Infallible

The type returned in the event of a conversion error.
source§

#### fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
source§

### impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

§

#### type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
source§

#### fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

## Layout§

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain `repr(...)` attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 44 bytes