66 lines
1.4 KiB
V
66 lines
1.4 KiB
V
// Copyright (c) 2019-2021 Alexander Medvednikov. All rights reserved.
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// Use of this source code is governed by an MIT license that can be found in the LICENSE file.
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module builtin
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import strings
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// This was never working correctly, the issue is now
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// fixed however the type checks in checker need to be
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// updated. if you uncomment it you will see the issue
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// type rune = int
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pub fn (c rune) str() string {
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return utf32_to_str(u32(c))
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/*
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unsafe {
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fst_byte := int(c)>>8 * 3 & 0xff
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len := utf8_char_len(byte(fst_byte))
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println('len=$len')
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mut str := string{
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len: len
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str: malloc(len + 1)
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}
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for i in 0..len {
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str.str[i] = byte(int(c)>>8 * (3 - i) & 0xff)
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}
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str.str[len] = `\0`
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println(str)
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return str
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}
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*/
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}
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// string converts a rune array to a string
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[manualfree]
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pub fn (ra []rune) string() string {
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mut sb := strings.new_builder(ra.len)
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sb.write_runes(ra)
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res := sb.str()
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unsafe { sb.free() }
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return res
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}
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// Define this on byte as well, so that we can do `s[0].is_capital()`
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pub fn (c byte) is_capital() bool {
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return c >= `A` && c <= `Z`
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}
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pub fn (b []byte) clone() []byte {
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mut res := []byte{len: b.len}
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// mut res := make([]byte, {repeat:b.len})
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for i in 0 .. b.len {
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res[i] = b[i]
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}
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return res
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}
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// TODO: remove this once runes are implemented
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pub fn (b []byte) bytestr() string {
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unsafe {
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buf := malloc_noscan(b.len + 1)
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vmemcpy(buf, b.data, b.len)
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buf[b.len] = 0
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return tos(buf, b.len)
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}
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}
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