pub const Variable = struct {
    global: Global.Index,
    thread_local: ThreadLocal = .default,
    mutability: Mutability = .global,
    init: Constant = .no_init,
    section: String = .none,
    alignment: Alignment = .default,

    pub const Index = enum(u32) {
        none = std.math.maxInt(u32),
        _,

        pub fn ptr(self: Index, builder: *Builder) *Variable {
            return &builder.variables.items[@intFromEnum(self)];
        }

        pub fn ptrConst(self: Index, builder: *const Builder) *const Variable {
            return &builder.variables.items[@intFromEnum(self)];
        }

        pub fn name(self: Index, builder: *const Builder) StrtabString {
            return self.ptrConst(builder).global.name(builder);
        }

        pub fn rename(self: Index, new_name: StrtabString, builder: *Builder) Allocator.Error!void {
            return self.ptrConst(builder).global.rename(new_name, builder);
        }

        pub fn typeOf(self: Index, builder: *const Builder) Type {
            return self.ptrConst(builder).global.typeOf(builder);
        }

        pub fn toConst(self: Index, builder: *const Builder) Constant {
            return self.ptrConst(builder).global.toConst();
        }

        pub fn toValue(self: Index, builder: *const Builder) Value {
            return self.toConst(builder).toValue();
        }

        pub fn setLinkage(self: Index, linkage: Linkage, builder: *Builder) void {
            return self.ptrConst(builder).global.setLinkage(linkage, builder);
        }

        pub fn setDllStorageClass(self: Index, class: DllStorageClass, builder: *Builder) void {
            return self.ptrConst(builder).global.setDllStorageClass(class, builder);
        }

        pub fn setUnnamedAddr(self: Index, unnamed_addr: UnnamedAddr, builder: *Builder) void {
            return self.ptrConst(builder).global.setUnnamedAddr(unnamed_addr, builder);
        }

        pub fn setThreadLocal(self: Index, thread_local: ThreadLocal, builder: *Builder) void {
            self.ptr(builder).thread_local = thread_local;
        }

        pub fn setMutability(self: Index, mutability: Mutability, builder: *Builder) void {
            self.ptr(builder).mutability = mutability;
        }

        pub fn setInitializer(
            self: Index,
            initializer: Constant,
            builder: *Builder,
        ) Allocator.Error!void {
            if (initializer != .no_init) {
                const variable = self.ptrConst(builder);
                const global = variable.global.ptr(builder);
                const initializer_type = initializer.typeOf(builder);
                global.type = initializer_type;
            }
            self.ptr(builder).init = initializer;
        }

        pub fn setSection(self: Index, section: String, builder: *Builder) void {
            self.ptr(builder).section = section;
        }

        pub fn setAlignment(self: Index, alignment: Alignment, builder: *Builder) void {
            self.ptr(builder).alignment = alignment;
        }

        pub fn getAlignment(self: Index, builder: *Builder) Alignment {
            return self.ptr(builder).alignment;
        }

        pub fn setGlobalVariableExpression(self: Index, expression: Metadata, builder: *Builder) void {
            self.ptrConst(builder).global.setDebugMetadata(expression, builder);
        }
    };
}