luaur-bytecode 0.1.4

Luau bytecode format and builder (Rust).
Documentation 
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use crate::records::bytecode_builder::BytecodeBuilder;
use luaur_common::enums::luau_opcode::LuauOpcode;
use luaur_common::functions::is_fast_call::isFastCall;
use luaur_common::functions::is_skip_c::isSkipC;
use luaur_common::macros::luau_assert::LUAU_ASSERT;
use luaur_common::macros::luau_insn_c::LUAU_INSN_C;
use luaur_common::macros::luau_insn_op::LUAU_INSN_OP;

impl BytecodeBuilder {
    pub fn patch_skip_c(&mut self, jump_label: usize, target_label: usize) -> bool {
        LUAU_ASSERT!(jump_label < self.insns.len());

        let jump_insn = self.insns[jump_label];
        #[allow(path_statements)]
        {
            let _ = jump_insn;
        }

        let op = unsafe { core::mem::transmute::<u8, LuauOpcode>(LUAU_INSN_OP(jump_insn) as u8) };
        LUAU_ASSERT!(isSkipC(op) || isFastCall(op));
        LUAU_ASSERT!(LUAU_INSN_C(jump_insn) == 0);

        let offset = (target_label as i32) - (jump_label as i32) - 1;

        if (offset as u8) as i32 != offset {
            return false;
        }

        self.insns[jump_label] |= (offset as u32) << 24;
        true
    }
}