Struct Chunk 

pub struct Chunk {
    pub code: Vec<u8>,
    pub constants: Vec<Constant>,
    pub lines: Vec<u32>,
    pub columns: Vec<u32>,
    pub functions: Vec<CompiledFunction>,
    /* private fields */
}

A compiled chunk of bytecode.

Fields

code: Vec<u8>

The bytecode instructions.

constants: Vec<Constant>

Constant pool.

lines: Vec<u32>

Source line numbers for each instruction (for error reporting).

columns: Vec<u32>

Source column numbers for each instruction (for error reporting). Parallel to lines; 0 means no column info available.

functions: Vec<CompiledFunction>

Compiled function bodies (for closures).

Implementations

impl Chunk

pub fn new() -> Self

pub fn set_column(&mut self, col: u32)

Set the current column for subsequent emit calls.

pub fn add_constant(&mut self, constant: Constant) -> u16

Add a constant and return its index.

pub fn emit(&mut self, op: Op, line: u32)

Emit a single-byte instruction.

pub fn emit_u16(&mut self, op: Op, arg: u16, line: u32)

Emit an instruction with a u16 argument.

pub fn emit_u8(&mut self, op: Op, arg: u8, line: u32)

Emit an instruction with a u8 argument.

pub fn emit_method_call(&mut self, name_idx: u16, arg_count: u8, line: u32)

Emit a method call: op + u16 (method name) + u8 (arg count).

pub fn emit_method_call_opt(&mut self, name_idx: u16, arg_count: u8, line: u32)

Emit an optional method call (?.) — returns nil if receiver is nil.

pub fn current_offset(&self) -> usize

Current code offset (for jump patching).

pub fn emit_jump(&mut self, op: Op, line: u32) -> usize

Emit a jump instruction with a placeholder offset. Returns the position to patch.

pub fn patch_jump(&mut self, patch_pos: usize)

Patch a jump instruction at the given position to jump to the current offset.

pub fn patch_jump_to(&mut self, patch_pos: usize, target: usize)

Patch a jump to a specific target position.

pub fn read_u16(&self, pos: usize) -> u16

Read a u16 argument at the given position.

pub fn disassemble(&self, name: &str) -> String

Disassemble for debugging.

Trait Implementations

impl Clone for Chunk

fn clone(&self) -> Chunk

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Chunk

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

Formats the value using the given formatter.

impl Default for Chunk

fn default() -> Self

Returns the “default value” for a type.