27b666dbba
This commit makes the minimal necessary changes to get things working, there are further changes which can be made to take advantage of new features.
32 lines
1.3 KiB
Zig
32 lines
1.3 KiB
Zig
// This file is part of river, a dynamic tiling wayland compositor.
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//
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// Copyright 2020 Isaac Freund
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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const std = @import("std");
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/// The global general-purpose allocator used throughout river's code
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pub const gpa = std.heap.c_allocator;
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/// Take a pointer to c_void and cast it to a pointer to T. This function
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/// exists to avoid having the verbosity of the required alignment casts all
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/// over the code.
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pub fn voidCast(comptime T: type, ptr: anytype) *T {
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// See https://github.com/ziglang/zig/issues/5618
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if (@TypeOf(ptr) != *c_void)
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@compileError("voidCast takes *c_void but " ++ @typeName(@TypeOf(ptr)) ++ " was provided");
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return @ptrCast(*T, @alignCast(@alignOf(*T), ptr));
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}
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