Struct CallInfo 

pub struct CallInfo {
    pub func: StackIdx,
    pub top: StackIdx,
    pub previous: Option<CallInfoIdx>,
    pub next: Option<CallInfoIdx>,
    pub u: CallInfoFrame,
    pub u2: CallInfoExtra,
    pub nresults: i16,
    pub callstatus: u16,
    pub call_metamethods: u8,
}

Saved state for a Lua or C call frame.

types.tsv: CallInfo → CallInfo (several fields renamed / adapted).

The C intrusive doubly-linked list (previous, next as raw pointers) is replaced by Option<CallInfoIdx> indices into LuaState::call_info.

Fields

func: StackIdx

top: StackIdx

previous: Option<CallInfoIdx>

next: Option<CallInfoIdx>

u: CallInfoFrame

u2: CallInfoExtra

nresults: i16

callstatus: u16

call_metamethods: u8

Lua 5.5: number of __call metamethods traversed before entering this frame. Upstream stores this in the repacked 5.5 callstatus bits; keep it separate here so older transfer/recover-status bits stay unchanged.

Implementations

impl CallInfo

pub fn is_lua(&self) -> bool

pub fn is_lua_code(&self) -> bool

pub fn is_vararg_func(&self) -> bool

Whether the active function is a vararg function.

Currently returns false unconditionally — vararg introspection via debug.getinfo reports no vararg info instead of panicking.

TODO(port): wire when CallInfo carries proto access for vararg detection.

pub fn saved_pc(&self) -> u32

Index of the next bytecode instruction on this Lua frame.

debug_assert! guards that the frame is a Lua frame, restoring the wrong-variant tripwire the pre-flatten enum gave for free.

pub fn set_saved_pc(&mut self, pc: u32)

Write the next-instruction index on this Lua frame.

pub fn nextra_args(&self) -> i32

Count of extra varargs collected at entry on this Lua frame.

pub fn set_nextra_args(&mut self, n: i32)

Write the extra-vararg count on this Lua frame.

pub fn transfer_ftransfer(&self) -> u16

pub fn transfer_ntransfer(&self) -> u16

pub fn set_trap(&mut self, t: bool)

Set or clear the per-frame hook trap, stored in callstatus bit CIST_TRAP (T2-C2 moved it out of the CallInfoFrame payload). Only Lua frames are ever trapped: set_traps guards on is_lua() before calling here, and trace_call/trace_exec operate on the current Lua frame. The debug_assert! preserves that invariant. Reusing a slot for a new call clears the bit via the callstatus = mask write in prep_call_info, exactly as the old full-variant store reset trap.

pub fn trap(&self) -> bool

Read the per-frame hook trap from callstatus bit CIST_TRAP. One mask, no enum-discriminant branch — this is the hot read in the OP_CALL / OP_RETURN updatetrap paths.

pub fn recover_status(&self) -> i32

Read the 3-bit recover-status field packed into bits 10-12 of callstatus.

pub fn set_recover_status<T: Into<i32>>(&mut self, status: T)

Write the 3-bit recover-status field. status must fit in three bits.

pub fn get_oah(&self) -> bool

pub fn set_oah(&mut self, allow: bool)

Store the current allowhook value into callstatus bit 0 (CIST_OAH).

pub fn u_c_old_errfunc(&self) -> isize

Saved errfunc to restore on pcall recovery (C-call frame).

debug_assert! guards that the frame is a C frame, restoring the wrong-variant tripwire the pre-flatten enum gave for free.

pub fn u_c_ctx(&self) -> isize

Continuation context on a C-call frame.

pub fn u_c_k(&self) -> Option<LuaKFunction>

Continuation function on a C-call frame.

pub fn set_u_c_k(&mut self, k: Option<LuaKFunction>)

Set continuation function on a C-call frame.

debug_assert! guards that the frame is a C frame (callers reach here from lua_callk/lua_pcallk, where L->ci is the calling C builtin’s frame).

pub fn set_u_c_ctx(&mut self, ctx: isize)

Set continuation context on a C-call frame.

pub fn set_u_c_old_errfunc(&mut self, old_errfunc: isize)

Set saved old_errfunc on a C-call frame.

pub fn set_u2_funcidx(&mut self, idx: i32)

Set the u2.funcidx field, used by yieldable pcall for error recovery.

Trait Implementations

impl Clone for CallInfo

fn clone(&self) -> CallInfo

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Default for CallInfo

fn default() -> Self

Returns the “default value” for a type.