You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
86 lines
2.2 KiB
Zig
86 lines
2.2 KiB
Zig
const std = @import("std");
|
|
|
|
const fmt = std.fmt;
|
|
const testing = std.testing;
|
|
|
|
pub const default = .{
|
|
.string = string,
|
|
.str = string,
|
|
.u8 = int(u8, 0),
|
|
.u16 = int(u16, 0),
|
|
.u32 = int(u32, 0),
|
|
.u64 = int(u64, 0),
|
|
.usize = int(usize, 0),
|
|
.i8 = int(i8, 0),
|
|
.i16 = int(i16, 0),
|
|
.i32 = int(i32, 0),
|
|
.i64 = int(i64, 0),
|
|
.isize = int(isize, 0),
|
|
.f32 = float(f32),
|
|
.f64 = float(f64),
|
|
};
|
|
|
|
pub fn string(in: []const u8) error{}![]const u8 {
|
|
return in;
|
|
}
|
|
|
|
test "string" {
|
|
try testing.expectEqualStrings("aa", try string("aa"));
|
|
}
|
|
|
|
pub fn int(comptime T: type, comptime radix: u8) fn ([]const u8) fmt.ParseIntError!T {
|
|
return struct {
|
|
fn parse(in: []const u8) fmt.ParseIntError!T {
|
|
return fmt.parseInt(T, in, radix);
|
|
}
|
|
}.parse;
|
|
}
|
|
|
|
test "int" {
|
|
try testing.expectEqual(@as(u8, 0), try int(u8, 10)("0"));
|
|
try testing.expectEqual(@as(u8, 1), try int(u8, 10)("1"));
|
|
try testing.expectEqual(@as(u8, 10), try int(u8, 10)("10"));
|
|
try testing.expectEqual(@as(u8, 0x10), try int(u8, 0)("0x10"));
|
|
try testing.expectEqual(@as(u8, 0b10), try int(u8, 0)("0b10"));
|
|
}
|
|
|
|
pub fn float(comptime T: type) fn ([]const u8) fmt.ParseFloatError!T {
|
|
return struct {
|
|
fn parse(in: []const u8) fmt.ParseFloatError!T {
|
|
return fmt.parseFloat(T, in);
|
|
}
|
|
}.parse;
|
|
}
|
|
|
|
test "float" {
|
|
try testing.expectEqual(@as(f32, 0), try float(f32)("0"));
|
|
}
|
|
|
|
pub const EnumError = error{
|
|
NameNotPartOfEnum,
|
|
};
|
|
|
|
pub fn enumeration(comptime T: type) fn ([]const u8) EnumError!T {
|
|
return struct {
|
|
fn parse(in: []const u8) EnumError!T {
|
|
return std.meta.stringToEnum(T, in) orelse error.NameNotPartOfEnum;
|
|
}
|
|
}.parse;
|
|
}
|
|
|
|
test "enumeration" {
|
|
const E = enum { a, b, c };
|
|
try testing.expectEqual(E.a, try enumeration(E)("a"));
|
|
try testing.expectEqual(E.b, try enumeration(E)("b"));
|
|
try testing.expectEqual(E.c, try enumeration(E)("c"));
|
|
try testing.expectError(EnumError.NameNotPartOfEnum, enumeration(E)("d"));
|
|
}
|
|
|
|
fn ReturnType(comptime P: type) type {
|
|
return @typeInfo(P).Fn.return_type.?;
|
|
}
|
|
|
|
pub fn Result(comptime P: type) type {
|
|
return @typeInfo(ReturnType(P)).ErrorUnion.payload;
|
|
}
|