Enum IntWidth 

#[repr(u8)]
pub enum IntWidth {
    I16 = 0,
    I32 = 1,
    I64 = 2,
}

The declared width of an integer column.

Ordered narrow → wide; I64 is the storage width and the default for an integer column whose declared type carries no width information.

Variants

I16 = 0

SMALLINT / INT2 — 2 bytes on the wire, PostgreSQL OID 21.

I32 = 1

INTEGER / INT / INT4 — 4 bytes on the wire, PostgreSQL OID 23.

I64 = 2

BIGINT / INT8 / INT64 — 8 bytes on the wire, PostgreSQL OID 20.

Implementations

impl IntWidth

pub fn from_declared_type(declared: &str) -> Option<Self>

Resolve a declared SQL type string to an integer width, or None when the string does not name an integer type.

Matching is case-insensitive and boundary-aware: a keyword matches when the (trimmed, lowercased) input either equals it exactly or is followed by ( or whitespace, so trailing modifiers ("BIGINT NOT NULL") and parameterised spellings still resolve. The boundary check is also what keeps int from swallowing int2/int4/int8/int64 as prefixes — the next character is a digit, which is neither ( nor whitespace — so the arm order below is not load-bearing.

This is the single source of truth for keyword → width. Callers that need an OID or a range check derive it from the returned width rather than re-parsing the string.

pub const fn range(self) -> (i64, i64)

The inclusive value range a column of this width accepts.

pub const fn contains(self, value: i64) -> bool

Whether value fits in a column of this declared width.

pub const fn pg_oid(self) -> u32

The PostgreSQL type OID a column of this width advertises in RowDescription and in catalog introspection.

pub const fn pg_type_name(self) -> &'static str

The canonical PostgreSQL type name, for error messages that must read like PostgreSQL’s own (integer out of range).

Trait Implementations

impl Clone for IntWidth

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for IntWidth

impl Debug for IntWidth

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for IntWidth

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for IntWidth

impl<'__msgpack_de> FromMessagePack<'__msgpack_de> for IntWidth

fn read<R: Read<'__msgpack_de>>(reader: &mut R) -> Result<Self, Error>

where Self: Sized,

Reads the MessagePack representation of this value from the provided reader.

impl Hash for IntWidth

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 IntWidth

fn cmp(&self, other: &Self) -> 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.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

🔬This is a nightly-only experimental API. (clamp_to)

Restrict a value to a certain range.

impl PartialEq for IntWidth

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for IntWidth

fn partial_cmp(&self, other: &Self) -> 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 Serialize for IntWidth

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for IntWidth

impl ToMessagePack for IntWidth

fn write<W: Write>(&self, writer: &mut W) -> Result<(), Error>

Writes the MessagePack representation of this value into the provided writer.

fn write_slice<W>(values: &[Self], writer: &mut W) -> Result<(), Error>

where W: Write, Self: Sized,

Writes the MessagePack representation of a slice of values into the provided writer.

fn size_hint(&self) -> Option<TrustedSizeHint>

Returns a trusted upper bound for the number of bytes written by the next call to Self::write, or None when it cannot be determined cheaply.

fn max_size() -> Option<TrustedSizeHint>

where Self: Sized,

Returns a trusted upper bound valid for every value of this type.