Struct FieldRef 

pub struct FieldRef<'a> {
    pub tag: u32,
    pub value: &'a [u8],
}

Zero-copy reference to a field within a FIX message buffer.

This struct holds references to the original message buffer, avoiding allocation during parsing.

Fields

tag: u32

The field tag number.

value: &'a [u8]

Reference to the field value bytes (without delimiters).

Implementations

impl<'a> FieldRef<'a>

pub const fn new(tag: u32, value: &'a [u8]) -> Self

Creates a new field reference.

Arguments

• tag - The field tag number
• value - Reference to the value bytes

pub const fn tag(&self) -> FieldTag

Returns the field tag.

pub fn as_str(&self) -> Result<&'a str, DecodeError>

Returns the value as a string slice.

Errors

Returns DecodeError::InvalidUtf8 if the value is not valid UTF-8.

pub fn to_string(&self) -> Result<String, DecodeError>

Returns the value as an owned String.

Errors

Returns DecodeError::InvalidUtf8 if the value is not valid UTF-8.

pub fn parse<T: FromStr>(&self) -> Result<T, DecodeError>

Parses the value as the specified type.

Errors

Returns DecodeError::InvalidFieldValue if parsing fails.

pub fn as_u64(&self) -> Result<u64, DecodeError>

Returns the value as a u64.

Errors

Returns DecodeError::InvalidFieldValue if the value is not a valid integer.

pub fn as_i64(&self) -> Result<i64, DecodeError>

Returns the value as an i64.

Errors

Returns DecodeError::InvalidFieldValue if the value is not a valid integer.

pub fn as_decimal(&self) -> Result<Decimal, DecodeError>

Returns the value as a Decimal.

Errors

Returns DecodeError::InvalidFieldValue if the value is not a valid decimal.

pub fn as_bool(&self) -> Result<bool, DecodeError>

Returns the value as a bool (FIX uses ‘Y’/‘N’).

Errors

Returns DecodeError::InvalidFieldValue if the value is not ‘Y’ or ‘N’.

pub fn as_char(&self) -> Result<char, DecodeError>

Returns the value as a single character.

Errors

Returns DecodeError::InvalidFieldValue if the value is not a single ASCII character.

pub const fn as_bytes(&self) -> &'a [u8]

Returns the raw bytes of the value.

pub const fn len(&self) -> usize

Returns the length of the value in bytes.

pub const fn is_empty(&self) -> bool

Returns true if the value is empty.

Trait Implementations

impl<'a> Clone for FieldRef<'a>

fn clone(&self) -> FieldRef<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Debug for FieldRef<'a>

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

Formats the value using the given formatter.

impl<'a> Copy for FieldRef<'a>