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v/vlib/builtin/rune.v

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2020-08-27 07:46:18 +03:00
// Copyright (c) 2019-2020 Alexander Medvednikov. All rights reserved.
// Use of this source code is governed by an MIT license that can be found in the LICENSE file.
module builtin
// This was never working correctly, the issue is now
// fixed however the type checks in checker need to be
// updated. if you uncomment it you will see the issue
// type rune = int
2020-08-27 07:46:18 +03:00
pub fn (c rune) str() string {
return utf32_to_str(u32(c))
/*
unsafe {
fst_byte := int(c)>>8 * 3 & 0xff
len := utf8_char_len(byte(fst_byte))
println('len=$len')
mut str := string{
len: len
str: malloc(len + 1)
}
for i in 0..len {
str.str[i] = byte(int(c)>>8 * (3 - i) & 0xff)
}
str.str[len] = `\0`
println(str)
return str
}
*/
}
// Define this on byte as well, so that we can do `s[0].is_capital()`
pub fn (c byte) is_capital() bool {
return c >= `A` && c <= `Z`
}
pub fn (b []byte) clone() []byte {
mut res := []byte{len: b.len}
//mut res := make([]byte, {repeat:b.len})
for i in 0..b.len {
res[i] = b[i]
}
return res
}
// TODO remove this once runes are implemented
pub fn (b []byte) bytestr() string {
return bytes2string(b)
}
// TODO copy pasted from builder.v
fn bytes2string(b []byte) string {
mut copy := b.clone()
copy << `\0`
res := tos(copy.data, copy.len-1)
return res
}