46 lines
1.1 KiB
Zig
46 lines
1.1 KiB
Zig
const io = @import("./io.zig");
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pub const Value = union(enum) {
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newline: void,
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string: []const u8,
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unsigned: u128,
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};
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pub fn print(writer: io.Writer, values: []const Value) io.WriteError!usize {
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var written: usize = 0;
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for (values) |value| written += switch (value) {
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.newline => try writer.write("\n"),
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.string => |string| try writer.write(string),
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.unsigned => |unsigned| try print_unsigned(writer, unsigned),
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};
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return written;
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}
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pub fn print_unsigned(writer: io.Writer, value: u128) io.WriteError!usize {
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if (value == 0) return writer.write("0");
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var buffer = [_]u8{0} ** 39;
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var buffer_count: usize = 0;
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var split_value = value;
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while (split_value != 0) : (buffer_count += 1) {
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const radix = 10;
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buffer[buffer_count] = @intCast(u8, (split_value % radix) + '0');
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split_value = (split_value / radix);
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}
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{
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const half_buffer_count = buffer_count / 2;
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var index: usize = 0;
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while (index < half_buffer_count) : (index += 1) {
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io.swap(u8, &buffer[index], &buffer[buffer_count - index - 1]);
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}
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}
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return writer.write(buffer[0 .. buffer_count]);
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}
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