Enum Origin 

pub enum Origin {
    Dir(PathBuf),
    SystemDir(PathBuf),
    Bundled,
    Unknown,
}

The directory a file’s own #include "…" searches first.

Variants

Dir(PathBuf)

A directory on disk. Empty means the current directory, which is what the parent of a bare lib.rs comes out as.

SystemDir(PathBuf)

A directory on disk reached through one of the platform’s own directories — the including file is a system header.

It searches that directory first, as any other file does, and its <…> includes then go to the platform’s directories before the bundled ones whatever the mode is. That is what keeps the platform’s header set self-consistent: glibc’s <pthread.h> gets glibc’s <time.h>, and so one struct timespec rather than two.

Bundled

The bundled set: one bundled header including another finds it there.

Unknown

Nowhere — the compiler would not say where the including file is.

Trait Implementations

impl Clone for Origin

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Origin

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

Formats the value using the given formatter.

impl Default for Origin

fn default() -> Self

Returns the “default value” for a type.