Function parseFromValue [src]

Alias for std.json.static.parseFromValue

Like parseFromSlice, but the input is an already-parsed std.json.Value object. Only options.ignore_unknown_fields is used from options.

Prototype

 pub fn parseFromValue( comptime T: type, allocator: Allocator, source: Value, options: ParseOptions, ) ParseFromValueError!Parsed(T)

Parameters

T: typeallocator: Allocatorsource: Valueoptions: ParseOptions

Possible Errors

DuplicateField

InvalidCharacter ParseIntError

The input was empty or contained an invalid character

InvalidEnumTag

InvalidNumber

LengthMismatch

MissingField

OutOfMemory Error

Overflow ParseIntError

The result cannot fit in the type specified

UnexpectedToken

UnknownField

Source

  pub fn parseFromValue(
    comptime T: type,
    allocator: Allocator,
    source: Value,
    options: ParseOptions,
) ParseFromValueError!Parsed(T) {
    var parsed = Parsed(T){
        .arena = try allocator.create(ArenaAllocator),
        .value = undefined,
    };
    errdefer allocator.destroy(parsed.arena);
    parsed.arena.* = ArenaAllocator.init(allocator);
    errdefer parsed.arena.deinit();

    parsed.value = try parseFromValueLeaky(T, parsed.arena.allocator(), source, options);

    return parsed;
}  