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improve lowlevel unwrapping

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Folkert 2022-07-08 22:13:13 +02:00
parent c0ace1ee0b
commit e8530eaca5
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12 changed files with 249 additions and 246 deletions
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39
crates/compiler/builtins/bitcode/src/str.zig
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@ -1638,18 +1638,45 @@ inline fn fromUtf8(arg: RocList, update_mode: UpdateMode) FromUtf8Result {
}
}
pub fn fromUtf8RangeC(output: *FromUtf8Result, arg: RocList, countAndStart: CountAndStart) callconv(.C) void {
output.* = @call(.{ .modifier = always_inline }, fromUtf8Range, .{ arg, countAndStart });
pub fn fromUtf8RangeC(
output: *FromUtf8Result,
list: RocList,
start: usize,
count: usize,
update_mode: UpdateMode,
) callconv(.C) void {
output.* = @call(.{ .modifier = always_inline }, fromUtf8Range, .{ list, start, count, update_mode });
}
fn fromUtf8Range(arg: RocList, countAndStart: CountAndStart) FromUtf8Result {
const bytes = @ptrCast([*]const u8, arg.bytes)[countAndStart.start..countAndStart.count];
pub fn fromUtf8Range(arg: RocList, start: usize, count: usize, update_mode: UpdateMode) FromUtf8Result {
const bytes = @ptrCast([*]const u8, arg.bytes)[start..count];
if (unicode.utf8ValidateSlice(bytes)) {
// the output will be correct. Now we need to clone the input
const string = RocStr.init(@ptrCast([*]const u8, bytes), countAndStart.count);
return FromUtf8Result{ .is_ok = true, .string = string, .byte_index = 0, .problem_code = Utf8ByteProblem.InvalidStartByte };
if (count == arg.len() and count > SMALL_STR_MAX_LENGTH) {
const byte_list = arg.makeUniqueExtra(RocStr.alignment, @sizeOf(u8), update_mode);
const string = RocStr{
.str_bytes = byte_list.bytes,
.str_len = byte_list.length,
.str_capacity = byte_list.capacity,
};
return FromUtf8Result{
.is_ok = true,
.string = string,
.byte_index = 0,
.problem_code = Utf8ByteProblem.InvalidStartByte,
};
} else {
return FromUtf8Result{
.is_ok = true,
.string = RocStr.init(@ptrCast([*]const u8, bytes), count),
.byte_index = 0,
.problem_code = Utf8ByteProblem.InvalidStartByte,
};
}
} else {
const temp = errorToProblem(@ptrCast([*]u8, arg.bytes), arg.length);
return FromUtf8Result{ .is_ok = false, .string = RocStr.empty(), .byte_index = temp.index, .problem_code = temp.problem };