1
0
mirror of https://github.com/vlang/v.git synced 2023-08-10 21:13:21 +03:00
v/builtin/int.v
2019-06-28 15:04:41 +02:00

162 lines
2.7 KiB
Go

// Copyright (c) 2019 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
pub fn (d double) str() string {
buf := malloc(sizeof(double) * 5 + 1)// TODO
C.sprintf(buf, '%f', d)
return tos(buf, _strlen(buf))
}
pub fn (d f64) str() string {
buf := malloc(sizeof(double) * 5 + 1)// TODO
C.sprintf(buf, '%f', d)
return tos(buf, _strlen(buf))
}
pub fn (d f32) str() string {
buf := malloc(sizeof(double) * 5 + 1)// TODO
C.sprintf(buf, '%f', d)
return tos(buf, _strlen(buf))
}
pub fn ptr_str(ptr voidptr) string {
buf := malloc(sizeof(double) * 5 + 1)// TODO
C.sprintf(buf, '%p', ptr)
return tos(buf, _strlen(buf))
}
// fn (nn i32) str() string {
// return i
// }
pub fn (nn int) str() string {
mut n := nn
if n == 0 {
return '0'
}
max := 16
mut buf := malloc(max)
mut len := 0
mut is_neg := false
if n < 0 {
n = -n
is_neg = true
}
// Fill the string from the end
for n > 0 {
d := n % 10
buf[max - len - 1] = d + int(`0`)
len++
n = n / 10
}
// Prepend - if it's negative
if is_neg {
buf[max - len - 1] = `-`
len++
}
return tos(buf + max - len, len)
}
pub fn (nn u8) str() string {
mut n := nn
if n == u8(0) {
return '0'
}
max := 5
mut buf := malloc(max)
mut len := 0
mut is_neg := false
if n < u8(0) {
n = -n
is_neg = true
}
// Fill the string from the end
for n > u8(0) {
d := n % u8(10)
buf[max - len - 1] = d + u8(`0`)
len++
n = n / u8(10)
}
// Prepend - if it's negative
if is_neg {
buf[max - len - 1] = `-`
len++
}
return tos(buf + max - len, len)
}
pub fn (nn i64) str() string {
mut n := nn
if n == i64(0) {
return '0'
}
max := 32
mut buf := malloc(max)
mut len := 0
mut is_neg := false
if n < i64(0) {
n = -n
is_neg = true
}
// Fill the string from the end
for n > i64(0) {
d := int(n % i64(10))
buf[max - len - 1] = d + int(`0`)
len++
n = n / i64(10)
}
// Prepend - if it's negative
if is_neg {
buf[max - len - 1] = `-`
len++
}
return tos(buf + max - len, len)
}
pub fn (b bool) str() string {
if b {
return 'true'
}
return 'false'
}
pub fn (n int) hex() string {
s := n.str()
hex := malloc(s.len + 2)
C.sprintf(hex, '0x%x', n)
return tos(hex, s.len + 2)
}
pub fn (n i64) hex() string {
s := n.str()
hex := malloc(s.len + 2)
C.sprintf(hex, '0x%x', n)
return tos(hex, s.len + 2)
}
pub fn (a[]byte) contains(val byte) bool {
for aa in a {
if aa == val {
return true
}
}
return false
}
/* TODO
fn (c rune) str() string {
}
*/
pub fn (c byte) str() string {
mut str := string {
len: 1
str: malloc(2)
}
str.str[0] = c
str.str[1] = `\0`
return str
}