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Make the string type elements "immutable", akin to char const * in C

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Allows for extra security and optimization benefits
This commit is contained in:
gingerBill
2019-12-01 14:10:59 +00:00
parent 7fbe0a6f23
commit 9db81498d8
25 changed files with 255 additions and 176 deletions
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core/runtime/core.odin
+21 -4
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@@ -418,11 +418,24 @@ default_assertion_failure_proc :: proc(prefix, message: string, loc: Source_Code
@builtin
copy :: proc "contextless" (dst, src: $T/[]$E) -> int {
copy_slice :: proc "contextless" (dst, src: $T/[]$E) -> int {
n := max(0, min(len(dst), len(src)));
if n > 0 do mem_copy(&dst[0], &src[0], n*size_of(E));
return n;
}
@builtin
copy_from_string :: proc "contextless" (dst: $T/[]$E/u8, src: $S/string) -> int {
n := max(0, min(len(dst), len(src)));
if n > 0 {
d := &dst[0];
s := (transmute(Raw_String)src).data;
mem_copy(d, s, n);
}
return n;
}
@builtin
copy :: proc{copy_slice, copy_from_string};
@@ -559,6 +572,10 @@ append_elems :: proc(array: ^$T/[dynamic]$E, args: ..E, loc := #caller_location)
a.len += arg_len;
}
}
@builtin
append_elem_string :: proc(array: ^$T/[dynamic]$E/u8, arg: $A/string, loc := #caller_location) {
append_elem(array, transmute([]E)arg, loc);
}
@builtin
reserve_soa :: proc(array: ^$T/#soa[dynamic]$E, capacity: int, loc := #caller_location) -> bool {
@@ -754,7 +771,7 @@ append_soa_elems :: proc(array: ^$T/#soa[dynamic]$E, args: ..E, loc := #caller_l
}
}
@builtin append :: proc{append_elem, append_elems};
@builtin append :: proc{append_elem, append_elems, append_elem_string};
@builtin append_soa :: proc{append_soa_elem, append_soa_elems};
@@ -1091,11 +1108,11 @@ _fnv64a :: proc(data: []byte, seed: u64 = 0xcbf29ce484222325) -> u64 {
default_hash :: proc(data: []byte) -> u64 {
return _fnv64a(data);
}
default_hash_string :: proc(s: string) -> u64 do return default_hash(([]byte)(s));
default_hash_string :: proc(s: string) -> u64 do return default_hash(transmute([]byte)(s));
source_code_location_hash :: proc(s: Source_Code_Location) -> u64 {
hash := _fnv64a(cast([]byte)s.file_path);
hash := _fnv64a(transmute([]byte)s.file_path);
hash = hash ~ (u64(s.line) * 0x100000001b3);
hash = hash ~ (u64(s.column) * 0x100000001b3);
return hash;