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freestanding: ptr_str, string concat, struct declaration

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* compiler: extract c_common_macros from c_headers, and use it in bare_c_headers too. Support for ptr_str and string concatenation in -freestanding mode.

* Add tests for structs and string concatenation in -freestanding mode .

* Move check_string_add_works to string/string.v .
This commit is contained in:
Delyan Angelov
2019-12-16 18:05:33 +02:00
committed by Alexander Medvednikov
parent dadf147382
commit b7c477cc18
6 changed files with 109 additions and 31 deletions
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24
vlib/builtin/bare/string_bare.v
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@ -22,6 +22,22 @@ pub fn tos(s byteptr, len int) string {
}
}
fn (s string) add(a string) string {
new_len := a.len + s.len
mut res := string {
len: new_len
str: malloc(new_len + 1)
}
for j := 0; j < s.len; j++ {
res[j] = s[j]
}
for j := 0; j < a.len; j++ {
res[s.len + j] = a[j]
}
res[new_len] = `\0`// V strings are not null terminated, but just in case
return res
}
/*
pub fn tos_clone(s byteptr) string {
if s == 0 {
@ -100,6 +116,13 @@ pub fn i64_str(n0 i64, base int) string {
return i64_tos(buf, 79, n0, base)
}
pub fn ptr_str(ptr voidptr) string {
buf := [16]byte
hex := i64_tos(buf, 15, i64(ptr), 16)
res := '0x' + hex
return res
}
pub fn (a string) clone() string {
mut b := string {
len: a.len
@ -109,3 +132,4 @@ pub fn (a string) clone() string {
b[a.len] = `\0`
return b
}