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const Allocator = @import("std").mem.Allocator;
pub fn Stack(comptime T: type) type {
return struct {
allocator: *Allocator,
memory: []T,
len: usize,
const Self = @This();
pub fn alloc(allocator: *Allocator, size: usize) !Self {
return Self{
.allocator = allocator,
.memory = try allocator.alloc(T, size),
.len = 0,
};
}
pub fn free(self: *Self) void {
self.allocator.free(self.memory);
self.* = undefined;
}
pub fn push(self: *Self, node: T) void {
self.memory[self.len] = node;
self.len += 1;
}
pub fn pop(self: *Self) T {
self.len -= 1;
return self.memory[self.len];
}
pub fn reset(self: *Self) void {
self.len = 0;
}
};
}
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