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v/vlib/builtin/bare/string_bare.v

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1.1 KiB
V

module builtin
pub struct string {
pub:
str byteptr
len int
}
pub fn strlen(s byteptr) int {
mut i := 0
for ; s[i] != 0; i++ {}
return i
}
pub fn tos(s byteptr, len int) string {
if s == 0 {
panic('tos(): nil string')
}
return string {
str: s
len: len
}
}
/*
pub fn tos_clone(s byteptr) string {
if s == 0 {
panic('tos: nil string')
}
return tos2(s).clone()
}
*/
// Same as `tos`, but calculates the length. Called by `string(bytes)` casts.
// Used only internally.
pub fn tos2(s byteptr) string {
if s == 0 {
panic('tos2: nil string')
}
return string {
str: s
len: strlen(s)
}
}
pub fn tos3(s *C.char) string {
if s == 0 {
panic('tos3: nil string')
}
return string {
str: byteptr(s)
len: strlen(byteptr(s))
}
}
pub fn string_eq (s1, s2 string) bool {
if s1.len != s2.len { return false }
for i in 0..s1.len {
if s1[i] != s2[i] { return false }
}
return true
}
pub fn string_ne (s1, s2 string) bool {
return !string_eq(s1,s2)
}
/*
pub fn (a string) clone() string {
mut b := string {
len: a.len
str: malloc(a.len + 1)
}
for i := 0; i < a.len; i++ {
b[i] = a[i]
}
b[a.len] = `\0`
return b
}
*/