Struct StringId 

#[repr(transparent)]
pub struct StringId(pub u32);

A string pool identifier. Indexes into BytecodeProgram::strings.

Using StringId instead of a heap-allocated String makes Operand (and therefore Instruction) Copy.

Current status

StringId is used by bytecode instructions (Operand) to reference interned strings in BytecodeProgram::strings, and it is fully integrated with the bytecode compiler and VM executor. However, many runtime paths (e.g. HeapValue::String, method dispatch keys, and serialization) still use Arc<String> rather than intern IDs. A crate-level InternPool that maps StringId <-> &str would allow these paths to avoid heap allocation and use O(1) integer comparison instead of string comparison.

TODO: Evaluate adding an InternPool struct here (owned by the VM or compilation context) that bridges the gap between StringId in opcodes and Arc<String> in HeapValue. Key considerations:

• The pool must be thread-safe if shared across async tasks.
• HeapValue::String could hold StringId instead of Arc<String> for short strings.
• Method registry PHF keys could use StringId for faster dispatch.

Tuple Fields

0: u32

Implementations

impl StringId

pub const fn new(id: u32) -> Self

Create a new StringId from a raw u32.

pub const fn raw(self) -> u32

Get the raw u32 value.

pub const fn index(self) -> usize

Convert to usize for indexing.

Trait Implementations

impl Clone for StringId

fn clone(&self) -> StringId

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for StringId

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for StringId

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for StringId

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

Formats the value using the given formatter.

impl From<StringId> for u32

fn from(id: StringId) -> u32

Converts to this type from the input type.

impl From<StringId> for usize

fn from(id: StringId) -> usize

Converts to this type from the input type.

impl From<u32> for StringId

fn from(id: u32) -> Self

Converts to this type from the input type.

impl Hash for StringId

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 StringId

fn cmp(&self, other: &StringId) -> 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 StringId

fn eq(&self, other: &StringId) -> 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 StringId

fn partial_cmp(&self, other: &StringId) -> 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 StringId

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for StringId

impl Eq for StringId

impl StructuralPartialEq for StringId