Struct SmartReader 

pub struct SmartReader { /* private fields */ }

Smart file reader that chooses optimal reading strategy based on file size.

For files smaller than the threshold, uses std::fs::read_to_string for simplicity. For larger files, uses memory-mapped files to avoid loading entire content into heap.

Implementations

impl SmartReader

pub const fn new() -> Self

Creates a new SmartReader with the default threshold (512KB).

Examples

use fast_yaml_parallel::SmartReader;
use std::path::Path;

let reader = SmartReader::new();
let content = reader.read(temp_file.path())?;
let yaml = content.as_str()?;
assert!(yaml.contains("key"));

pub const fn with_threshold(threshold: u64) -> Self

Creates a new SmartReader with a custom threshold.

Examples

use fast_yaml_parallel::SmartReader;

// Use mmap for files larger than 1MB
let reader = SmartReader::with_threshold(1024 * 1024);

pub fn read(&self, path: &Path) -> Result<FileContent>

Reads file content using the optimal strategy based on file size.

Returns FileContent and automatically chooses between:

• read_to_string for files < threshold
• mmap for files >= threshold

Falls back to read_to_string if mmap fails.

Errors

Returns Error::Io if:

• Path does not exist
• Path is a directory
• Insufficient permissions

Trait Implementations

impl Debug for SmartReader

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

Formats the value using the given formatter.

impl Default for SmartReader

fn default() -> Self

Returns the “default value” for a type.