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add Str.toBytes

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This commit is contained in:
Folkert 2021-02-21 19:52:32 +01:00
parent bcbef5d3aa
commit 9116e9e8c9
10 changed files with 73 additions and 2 deletions
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21
compiler/builtins/bitcode/src/str.zig
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@ -1,4 +1,5 @@
const utils = @import("utils.zig");
const RocList = @import("list.zig").RocList;
const std = @import("std");
const mem = std.mem;
const always_inline = std.builtin.CallOptions.Modifier.always_inline;
@ -961,6 +962,26 @@ test "RocStr.joinWith: result is big" {
expect(roc_result.eq(result));
}
// Str.toBytes
pub fn strToBytesC(arg: RocStr) callconv(.C) RocList {
return @call(.{ .modifier = always_inline }, strToBytes, .{ std.heap.c_allocator, arg });
}
fn strToBytes(allocator: *Allocator, arg: RocStr) RocList {
if (arg.isEmpty()) {
return RocList.empty();
} else if (arg.isSmallStr()) {
const length = arg.len();
const ptr = utils.allocateWithRefcount(allocator, @alignOf(usize), length);
@memcpy(ptr, arg.asU8ptr(), length);
return RocList{ .length = length, .bytes = ptr };
} else {
return RocList{ .length = arg.len(), .bytes = arg.str_bytes };
}
}
pub fn isValidUnicode(ptr: [*]u8, len: usize) callconv(.C) bool {
const bytes: []u8 = ptr[0..len];
return @call(.{ .modifier = always_inline }, unicode.utf8ValidateSlice, .{bytes});