32 lines
1.0 KiB
Zig
32 lines
1.0 KiB
Zig
const std = @import("std");
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const Type = @import("type.zig").Type;
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const Value = @import("value.zig").Value;
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const Allocator = std.mem.Allocator;
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const TypedValue = @This();
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ty: Type,
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val: Value,
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/// Memory management for TypedValue. The main purpose of this type
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/// is to be small and have a deinit() function to free associated resources.
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pub const Managed = struct {
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/// If the tag value is less than Tag.no_payload_count, then no pointer
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/// dereference is needed.
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typed_value: TypedValue,
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/// If this is `null` then there is no memory management needed.
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arena: ?*std.heap.ArenaAllocator.State = null,
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pub fn deinit(self: *Managed, allocator: *Allocator) void {
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if (self.arena) |a| a.promote(allocator).deinit();
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self.* = undefined;
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}
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};
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/// Assumes arena allocation. Does a recursive copy.
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pub fn copy(self: TypedValue, allocator: *Allocator) error{OutOfMemory}!TypedValue {
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return TypedValue{
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.ty = try self.ty.copy(allocator),
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.val = try self.val.copy(allocator),
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};
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}
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