1
0
mirror of https://github.com/vlang/v.git synced 2023-08-10 21:13:21 +03:00
v/vlib/builtin/js/byte.js.v

71 lines
1.6 KiB
V

module builtin
pub fn (b byte) is_space() bool {
mut result := false
#result.val = /^\s*$/.test(String.fromCharCode(b))
return result
}
pub fn (c byte) str() string {
res := ''
#res.str = c.val.toString()
return res
}
pub fn (c byte) ascii_str() string {
res := ''
#res.str = String.fromCharCode(c.val)
return res
}
pub fn (c byte) repeat(count int) string {
mut res := ''
for _ in 0 .. count {
res += c.ascii_str()
}
return res
}
pub fn (c byte) is_digit() bool {
return c >= `0` && c <= `9`
}
// is_hex_digit returns `true` if the byte is either in range 0-9, a-f or A-F and `false` otherwise.
// Example: assert byte(`F`) == true
[inline]
pub fn (c byte) is_hex_digit() bool {
return c.is_digit() || (c >= `a` && c <= `f`) || (c >= `A` && c <= `F`)
}
// is_oct_digit returns `true` if the byte is in range 0-7 and `false` otherwise.
// Example: assert byte(`7`) == true
[inline]
pub fn (c byte) is_oct_digit() bool {
return c >= `0` && c <= `7`
}
// is_bin_digit returns `true` if the byte is a binary digit (0 or 1) and `false` otherwise.
// Example: assert byte(`0`) == true
[inline]
pub fn (c byte) is_bin_digit() bool {
return c == `0` || c == `1`
}
// is_letter returns `true` if the byte is in range a-z or A-Z and `false` otherwise.
// Example: assert byte(`V`) == true
[inline]
pub fn (c byte) is_letter() bool {
return (c >= `a` && c <= `z`) || (c >= `A` && c <= `Z`)
}
// is_alnum returns `true` if the byte is in range a-z, A-Z, 0-9 and `false` otherwise.
// Example: assert byte(`V`) == true
[inline]
pub fn (c byte) is_alnum() bool {
return c.is_letter() || c.is_digit()
}