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make Str.fromUtf8 in-place

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Folkert 2021-10-03 12:13:17 +02:00
parent 9e97a09a87
commit 018348bd83
6 changed files with 49 additions and 14 deletions
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30
compiler/builtins/bitcode/src/str.zig
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@ -1,5 +1,6 @@
const utils = @import("utils.zig");
const RocList = @import("list.zig").RocList;
const UpdateMode = utils.UpdateMode;
const std = @import("std");
const mem = std.mem;
const always_inline = std.builtin.CallOptions.Modifier.always_inline;
@ -1177,11 +1178,11 @@ const CountAndStart = extern struct {
start: usize,
};
pub fn fromUtf8C(arg: RocList, output: *FromUtf8Result) callconv(.C) void {
output.* = @call(.{ .modifier = always_inline }, fromUtf8, .{arg});
pub fn fromUtf8C(arg: RocList, update_mode: UpdateMode, output: *FromUtf8Result) callconv(.C) void {
output.* = fromUtf8(arg, update_mode);
}
fn fromUtf8(arg: RocList) FromUtf8Result {
inline fn fromUtf8(arg: RocList, update_mode: UpdateMode) FromUtf8Result {
const bytes = @ptrCast([*]const u8, arg.bytes)[0..arg.length];
if (unicode.utf8ValidateSlice(bytes)) {
@ -1194,13 +1195,23 @@ fn fromUtf8(arg: RocList) FromUtf8Result {
const data_bytes = arg.len();
utils.decref(arg.bytes, data_bytes, RocStr.alignment);
return FromUtf8Result{ .is_ok = true, .string = string, .byte_index = 0, .problem_code = Utf8ByteProblem.InvalidStartByte };
return FromUtf8Result{
.is_ok = true,
.string = string,
.byte_index = 0,
.problem_code = Utf8ByteProblem.InvalidStartByte,
};
} else {
const byte_list = arg.makeUnique(RocStr.alignment, @sizeOf(u8));
const byte_list = arg.makeUniqueExtra(RocStr.alignment, @sizeOf(u8), update_mode);
const string = RocStr{ .str_bytes = byte_list.bytes, .str_len = byte_list.length };
return FromUtf8Result{ .is_ok = true, .string = string, .byte_index = 0, .problem_code = Utf8ByteProblem.InvalidStartByte };
return FromUtf8Result{
.is_ok = true,
.string = string,
.byte_index = 0,
.problem_code = Utf8ByteProblem.InvalidStartByte,
};
}
} else {
const temp = errorToProblem(@ptrCast([*]u8, arg.bytes), arg.length);
@ -1209,7 +1220,12 @@ fn fromUtf8(arg: RocList) FromUtf8Result {
const data_bytes = arg.len();
utils.decref(arg.bytes, data_bytes, RocStr.alignment);
return FromUtf8Result{ .is_ok = false, .string = RocStr.empty(), .byte_index = temp.index, .problem_code = temp.problem };
return FromUtf8Result{
.is_ok = false,
.string = RocStr.empty(),
.byte_index = temp.index,
.problem_code = temp.problem,
};
}
}