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introduce std.ArrayHashMap.reinit

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Andrew Kelley 2024-11-27 13:53:39 -08:00
parent 1a99c99ee9
commit c9c7ede2f9
1 changed files with 6 additions and 2 deletions
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8
lib/std/array_hash_map.zig
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@ -621,15 +621,19 @@ pub fn ArrayHashMapUnmanaged(
pub fn init(allocator: Allocator, key_list: []const K, value_list: []const V) !Self { pub fn init(allocator: Allocator, key_list: []const K, value_list: []const V) !Self {
var self: Self = .{}; var self: Self = .{};
errdefer self.deinit(allocator);
try self.reinit(allocator, key_list, value_list);
return self;
}
pub fn reinit(self: *Self, allocator: Allocator, key_list: []const K, value_list: []const V) !void {
try self.entries.resize(allocator, key_list.len); try self.entries.resize(allocator, key_list.len);
errdefer self.entries.deinit(allocator);
@memcpy(self.keys(), key_list); @memcpy(self.keys(), key_list);
if (@sizeOf(V) != 0) { if (@sizeOf(V) != 0) {
assert(key_list.len == value_list.len); assert(key_list.len == value_list.len);
@memcpy(self.values(), value_list); @memcpy(self.values(), value_list);
} }
try self.reIndex(allocator); try self.reIndex(allocator);
return self;
} }
/// Frees the backing allocation and leaves the map in an undefined state. /// Frees the backing allocation and leaves the map in an undefined state.