Struct zingen::JumpTable

pub struct JumpTable { /* private fields */ }

Jump table implementation.

Implementations

impl JumpTable

pub fn shift_pc(&mut self, start: u16, offset: u16) -> Result<()>

Shift program counter for all items.

pub fn update_pc(&mut self) -> Result<()>

Update program counter for all items.

pub fn shift_targets(&mut self) -> Result<()>

Shift the target program counters.

pub fn shift_target(&mut self, ptr: u16, offset: u16) -> Result<()>

Shift the program counter of targets with given ptr and offset.

pub fn shift_func_target(&mut self, start: u16, offset: u16) -> Result<()>

Shift program counter for functions.

pub fn shift_label_pc(&mut self, start: u16, offset: u16) -> Result<()>

Shift program counter for labels.

pub fn shift_label_target(&mut self, ptr: u16, offset: u16) -> Result<()>

Shift target program counter for labels.

impl JumpTable

pub fn relocate(&mut self, buffer: &mut Buffer) -> Result<()>

Relocate program counter to all registered labels.

WARNING: This function should only be called once in the compiler. considering move it to the compiler.

impl JumpTable

pub fn call(&mut self, pc: u16, func: u32)

Register a function.

pub fn call_offset(&mut self, func: u32, offset: u16) -> Result<()>

Register program counter to the function table.

pub fn code_offset(&mut self, offset: u16)

Register program counter for code section.

pub fn ext(&mut self, pc: u16, func: Func)

Register a external function.

pub fn label(&mut self, pc: u16, label: u16)

Register a label.

pub fn merge(&mut self, table: Self, pc: u16) -> Result<()>

Merge two jump tables.

Merge other jump table into this one, update the program counter of the target jump table.

pub fn target(&mut self, jump: &Jump) -> Result<u16>

Get the target of a jump.

Trait Implementations

impl Debug for JumpTable

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

Formats the value using the given formatter.

impl Default for JumpTable

fn default() -> JumpTable

Returns the “default value” for a type.