Struct FileIdentifier

pub struct FileIdentifier(/* private fields */);

Type-safe wrapper for file identifiers.

File identifiers are used to reference opened files within a task’s context, similar to file descriptors in Unix-like systems. Each task maintains its own file identifier space, allowing for task isolation and security.

Standard File Identifiers

The following standard identifiers are predefined:

• FileIdentifier::STANDARD_IN (0) - Standard input
• FileIdentifier::STANDARD_OUT (1) - Standard output
• FileIdentifier::STANDARD_ERROR (2) - Standard error
• FileIdentifier::MINIMUM (3) - First available identifier for regular files

Examples

use file_system::File_identifier_type;

// Standard file identifiers
assert_eq!(File_identifier_type::Standard_in.Into_inner(), 0);
assert_eq!(File_identifier_type::Standard_out.Into_inner(), 1);
assert_eq!(File_identifier_type::Standard_error.Into_inner(), 2);

// Create a custom file identifier
let file_id = File_identifier_type::new(42);
assert_eq!(file_id.Into_inner(), 42);

Implementations

impl FileIdentifier

pub const SIZE_BITS: u8 = 32u8

Size in bits of the underlying identifier type.

pub const STANDARD_IN: FileIdentifier

Standard input file identifier (traditionally 0).

pub const STANDARD_OUT: FileIdentifier

Standard output file identifier (traditionally 1).

pub const STANDARD_ERROR: FileIdentifier

Standard error file identifier (traditionally 2).

pub const MINIMUM: FileIdentifier

Minimum file identifier available for regular files.

Regular files should use identifiers starting from this value to avoid conflicts with standard file identifiers.

pub const MAXIMUM: FileIdentifier

Maximum possible file identifier value.

pub const fn new(identifier: FileIdentifierInner) -> Self

Create a new file identifier from a raw value.

Arguments

• Identifier - The raw identifier value

Examples

use file_system::File_identifier_type;

let file_id = File_identifier_type::new(5);
assert_eq!(file_id.Into_inner(), 5);

pub const fn into_inner(self) -> FileIdentifierInner

Get the raw identifier value.

Returns

The underlying raw identifier value.

Examples

use file_system::File_identifier_type;

let file_id = File_identifier_type::new(42);
assert_eq!(file_id.Into_inner(), 42);

Trait Implementations

impl Clone for FileIdentifier

fn clone(&self) -> FileIdentifier

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FileIdentifier

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

Formats the value using the given formatter.

impl From<FileIdentifier> for FileIdentifierInner

fn from(internal_file_identifier: FileIdentifier) -> Self

Converts to this type from the input type.

impl From<u32> for FileIdentifier

fn from(internal_file_identifier: FileIdentifierInner) -> Self

Converts to this type from the input type.

impl Hash for FileIdentifier

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for FileIdentifier

fn cmp(&self, other: &FileIdentifier) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for FileIdentifier

fn eq(&self, other: &FileIdentifier) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for FileIdentifier

fn partial_cmp(&self, other: &FileIdentifier) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Copy for FileIdentifier

impl Eq for FileIdentifier

impl StructuralPartialEq for FileIdentifier