zig/mach
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

freetype: init harfbuzz binding

Browse source
This commit is contained in:
Ali Chraghi 2022-06-07 18:16:48 +04:30 • committed by Stephen Gutekanst
parent 04a0a79ef6
commit 82e1990009
18 changed files with 111 additions and 31 deletions
Download patch file Download diff file Expand all files Collapse all files

45
freetype/src/utils.zig
View file

@ -1,45 +0,0 @@
const std = @import("std");
pub fn structToBitFields(comptime IntType: type, comptime EnumDataType: type, flags: anytype) IntType {
var value: IntType = 0;
inline for (comptime std.meta.fieldNames(EnumDataType)) |field_name| {
if (@field(flags, field_name)) {
value |= @enumToInt(@field(EnumDataType, field_name));
}
}
return value;
}
pub fn bitFieldsToStruct(comptime StructType: type, comptime EnumDataType: type, flags: anytype) StructType {
var value = std.mem.zeroes(StructType);
inline for (comptime std.meta.fieldNames(EnumDataType)) |field_name| {
if (flags & (@enumToInt(@field(EnumDataType, field_name))) != 0) {
@field(value, field_name) = true;
}
}
return value;
}
const TestEnum = enum(u16) {
filed_1 = (1 << 1),
filed_2 = (1 << 2),
filed_3 = (1 << 3),
};
const TestStruct = packed struct {
filed_1: bool = false,
filed_2: bool = false,
filed_3: bool = false,
};
test "struct fields to bit fields" {
try std.testing.expectEqual(@as(u16, (1 << 1) | (1 << 3)), structToBitFields(u16, TestEnum, TestStruct{
.filed_1 = true,
.filed_3 = true,
}));
try std.testing.expectEqual(@as(u16, 0), structToBitFields(u16, TestEnum, TestStruct{}));
}
test "bit fields to struct" {
try std.testing.expectEqual(TestStruct{ .filed_1 = true, .filed_2 = true, .filed_3 = false }, bitFieldsToStruct(TestStruct, TestEnum, (1 << 1) | (1 << 2)));
}