Implement Bytecode Executor for Kym #19
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@ -24,11 +24,7 @@ pub const Allocator = struct {
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pub fn bind(comptime State: type, state: *State, comptime actions: Actions(State)) Allocator {
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pub fn bind(comptime State: type, state: *State, comptime actions: Actions(State)) Allocator {
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const is_zero_aligned = @alignOf(State) == 0;
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const is_zero_aligned = @alignOf(State) == 0;
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return .{
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const ErasedActions = struct {
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.context = if (is_zero_aligned) state else @ptrCast(state),
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.actions = &.{
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.deallocate = struct {
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fn deallocate(context: *anyopaque, allocation: []Byte) void {
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fn deallocate(context: *anyopaque, allocation: []Byte) void {
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if (is_zero_aligned) {
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if (is_zero_aligned) {
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return actions.deallocator(@ptrCast(context), allocation);
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return actions.deallocator(@ptrCast(context), allocation);
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@ -36,9 +32,7 @@ pub const Allocator = struct {
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return actions.deallocate(@ptrCast(@alignCast(context)), allocation);
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return actions.deallocate(@ptrCast(@alignCast(context)), allocation);
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}
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}
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}.deallocate,
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.reallocate = struct {
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fn reallocate(context: *anyopaque, return_address: usize, existing_allocation: ?[]Byte, size: usize) AllocationError![]Byte {
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fn reallocate(context: *anyopaque, return_address: usize, existing_allocation: ?[]Byte, size: usize) AllocationError![]Byte {
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if (is_zero_aligned) {
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if (is_zero_aligned) {
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return actions.reallocator(@ptrCast(context), return_address, existing_allocation, size);
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return actions.reallocator(@ptrCast(context), return_address, existing_allocation, size);
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@ -46,7 +40,14 @@ pub const Allocator = struct {
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return actions.reallocate(@ptrCast(@alignCast(context)), return_address, existing_allocation, size);
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return actions.reallocate(@ptrCast(@alignCast(context)), return_address, existing_allocation, size);
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}
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}
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}.reallocate,
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};
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return .{
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.context = if (is_zero_aligned) state else @ptrCast(state),
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.actions = &.{
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.deallocate = ErasedActions.deallocate,
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.reallocate = ErasedActions.reallocate,
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}
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}
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};
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};
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}
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}
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