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Merge pull request #14848 from r00ster91/json

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std.json: fix 2 TODOs
This commit is contained in:
Veikka Tuominen 2023-03-21 15:00:47 +02:00 committed by GitHub
commit cd3575b0f0
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1 changed files with 34 additions and 30 deletions
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64
lib/std/json.zig
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@ -1534,30 +1534,25 @@ fn parseInternal(
child_options.allow_trailing_data = true;
var found = false;
inline for (structInfo.fields, 0..) |field, i| {
// TODO: using switches here segfault the compiler (#2727?)
if ((stringToken.escapes == .None and mem.eql(u8, field.name, key_source_slice)) or (stringToken.escapes == .Some and (field.name.len == stringToken.decodedLength() and encodesTo(field.name, key_source_slice)))) {
// if (switch (stringToken.escapes) {
// .None => mem.eql(u8, field.name, key_source_slice),
// .Some => (field.name.len == stringToken.decodedLength() and encodesTo(field.name, key_source_slice)),
// }) {
if (switch (stringToken.escapes) {
.None => mem.eql(u8, field.name, key_source_slice),
.Some => (field.name.len == stringToken.decodedLength() and encodesTo(field.name, key_source_slice)),
}) {
if (fields_seen[i]) {
// switch (options.duplicate_field_behavior) {
// .UseFirst => {},
// .Error => {},
// .UseLast => {},
// }
if (options.duplicate_field_behavior == .UseFirst) {
// unconditonally ignore value. for comptime fields, this skips check against default_value
parseFree(field.type, try parse(field.type, tokens, child_options), child_options);
found = true;
break;
} else if (options.duplicate_field_behavior == .Error) {
return error.DuplicateJSONField;
} else if (options.duplicate_field_behavior == .UseLast) {
if (!field.is_comptime) {
parseFree(field.type, @field(r, field.name), child_options);
}
fields_seen[i] = false;
switch (options.duplicate_field_behavior) {
.UseFirst => {
// unconditonally ignore value. for comptime fields, this skips check against default_value
parseFree(field.type, try parse(field.type, tokens, child_options), child_options);
found = true;
break;
},
.Error => return error.DuplicateJSONField,
.UseLast => {
if (!field.is_comptime) {
parseFree(field.type, @field(r, field.name), child_options);
}
fields_seen[i] = false;
},
}
}
if (field.is_comptime) {
@ -2355,10 +2350,13 @@ pub fn stringify(
return stringify(value.*, options, out_stream);
},
},
// TODO: .Many when there is a sentinel (waiting for https://github.com/ziglang/zig/pull/3972)
.Slice => {
if (ptr_info.child == u8 and options.string == .String and std.unicode.utf8ValidateSlice(value)) {
try encodeJsonString(value, options, out_stream);
.Many, .Slice => {
if (ptr_info.size == .Many and ptr_info.sentinel == null)
@compileError("unable to stringify type '" ++ @typeName(T) ++ "' without sentinel");
const slice = if (ptr_info.size == .Many) mem.span(value) else value;
if (ptr_info.child == u8 and options.string == .String and std.unicode.utf8ValidateSlice(slice)) {
try encodeJsonString(slice, options, out_stream);
return;
}
@ -2367,7 +2365,7 @@ pub fn stringify(
if (child_options.whitespace) |*whitespace| {
whitespace.indent_level += 1;
}
for (value, 0..) |x, i| {
for (slice, 0..) |x, i| {
if (i != 0) {
try out_stream.writeByte(',');
}
@ -2376,7 +2374,7 @@ pub fn stringify(
}
try stringify(x, child_options, out_stream);
}
if (value.len != 0) {
if (slice.len != 0) {
if (options.whitespace) |whitespace| {
try whitespace.outputIndent(out_stream);
}
@ -2531,6 +2529,12 @@ test "stringify string" {
try teststringify("\"\\/\"", "/", StringifyOptions{ .string = .{ .String = .{ .escape_solidus = true } } });
}
test "stringify many-item sentinel-terminated string" {
try teststringify("\"hello\"", @as([*:0]const u8, "hello"), StringifyOptions{});
try teststringify("\"with\\nescapes\\r\"", @as([*:0]const u8, "with\nescapes\r"), StringifyOptions{ .string = .{ .String = .{ .escape_unicode = true } } });
try teststringify("\"with unicode\\u0001\"", @as([*:0]const u8, "with unicode\u{1}"), StringifyOptions{ .string = .{ .String = .{ .escape_unicode = true } } });
}
test "stringify tagged unions" {
try teststringify("42", union(enum) {
Foo: u32,
@ -2717,7 +2721,7 @@ test "encodesTo" {
try testing.expectEqual(true, encodesTo("withąunicode😂", "with\\u0105unicode\\ud83d\\ude02"));
}
test "issue 14600" {
test "deserializing string with escape sequence into sentinel slice" {
const json = "\"\\n\"";
var token_stream = std.json.TokenStream.init(json);
const options = ParseOptions{ .allocator = std.testing.allocator };