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f8153f6569
Author | SHA1 | Date |
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Rekai Nyangadzayi Musuka | f8153f6569 | |
Rekai Nyangadzayi Musuka | 722427b693 | |
Rekai Nyangadzayi Musuka | 56c5f254ee |
16
src/trie.zig
16
src/trie.zig
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@ -15,7 +15,7 @@ pub fn HashArrayMappedTrie(comptime K: type, comptime V: type, comptime Context:
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const Digest = Context.Digest; // as in Hash Code or Hash Digest
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const Digest = Context.Digest; // as in Hash Code or Hash Digest
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const table_size = @typeInfo(Digest).Int.bits;
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const table_size = @typeInfo(Digest).Int.bits;
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const t = @intCast(Log2Int(Digest), @typeInfo(Log2Int(Digest)).Int.bits);
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const t: Log2Int(Digest) = @intCast(@typeInfo(Log2Int(Digest).Int.bits));
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free_list: FreeList,
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free_list: FreeList,
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root: []?*Node,
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root: []?*Node,
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@ -37,7 +37,7 @@ pub fn HashArrayMappedTrie(comptime K: type, comptime V: type, comptime Context:
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pub fn deinit(self: *const FreeList.Node, allocator: Allocator, len: usize) void {
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pub fn deinit(self: *const FreeList.Node, allocator: Allocator, len: usize) void {
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switch (len) {
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switch (len) {
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0 => unreachable,
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0 => unreachable,
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1 => allocator.destroy(@ptrCast(*Self.Node, self.inner)),
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1 => allocator.destroy(@as(*Self.Node, @ptrCast(self.inner))),
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else => allocator.free(self.inner[0..len]),
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else => allocator.free(self.inner[0..len]),
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}
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}
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}
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}
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@ -114,7 +114,7 @@ pub fn HashArrayMappedTrie(comptime K: type, comptime V: type, comptime Context:
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}
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}
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pub fn create(self: *FreeList, allocator: Allocator, comptime T: type) !*T {
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pub fn create(self: *FreeList, allocator: Allocator, comptime T: type) !*T {
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return @ptrCast(*T, try self.alloc(allocator, T, 1));
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return @ptrCast(try self.alloc(allocator, T, 1));
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}
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}
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/// Free'd nodes aren't deallocated, but instead are tracked by a free list where they
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/// Free'd nodes aren't deallocated, but instead are tracked by a free list where they
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@ -140,7 +140,7 @@ pub fn HashArrayMappedTrie(comptime K: type, comptime V: type, comptime Context:
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}
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}
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pub fn destroy(self: *FreeList, allocator: Allocator, node: *Self.Node) !void {
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pub fn destroy(self: *FreeList, allocator: Allocator, node: *Self.Node) !void {
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self.free(allocator, @ptrCast([*]Self.Node, node)[0..1]);
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self.free(allocator, @as([*]Self.Node, @ptrCast(node))[0..1]);
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}
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}
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};
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};
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@ -182,9 +182,9 @@ pub fn HashArrayMappedTrie(comptime K: type, comptime V: type, comptime Context:
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}
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}
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fn tableIdx(hash: Digest, offset: u16) Log2Int(Digest) {
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fn tableIdx(hash: Digest, offset: u16) Log2Int(Digest) {
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const shift_amt = @intCast(Log2Int(Digest), table_size - offset);
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const shift_amt: Log2Int(Digest) = @intCast(table_size - offset);
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return @truncate(Log2Int(Digest), hash >> shift_amt);
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return @truncate(hash >> shift_amt);
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}
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}
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pub fn search(self: *Self, key: K) ?Pair {
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pub fn search(self: *Self, key: K) ?Pair {
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@ -243,7 +243,7 @@ pub fn HashArrayMappedTrie(comptime K: type, comptime V: type, comptime Context:
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var i: Log2Int(Digest) = 0;
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var i: Log2Int(Digest) = 0;
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for (0..table_size) |shift| {
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for (0..table_size) |shift| {
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const mask_loop = @as(Digest, 1) << @intCast(Log2Int(Digest), shift);
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const mask_loop = @as(Digest, 1) << @as(Log2Int(Digest), @intCast(shift));
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if (new_map & mask_loop != 0) {
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if (new_map & mask_loop != 0) {
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defer i += 1;
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defer i += 1;
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@ -287,7 +287,7 @@ pub fn HashArrayMappedTrie(comptime K: type, comptime V: type, comptime Context:
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const copied_pair = try self.free_list.create(allocator, Node);
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const copied_pair = try self.free_list.create(allocator, Node);
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copied_pair.* = .{ .kv = prev_pair };
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copied_pair.* = .{ .kv = prev_pair };
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current.* = .{ .table = .{ .map = mask, .base = @ptrCast([*]Node, copied_pair) } };
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current.* = .{ .table = .{ .map = mask, .base = @as([*]Node, @ptrCast(copied_pair)) } };
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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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