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use {
alloc::string::String,
std::io::{self, ErrorKind, Read},
crate::{Blob, IoResult, List, Map, Object, Value},
};
pub fn decode<R>(source: &mut R) -> IoResult<Option<Value>> where R: Read {
crate::decode_value(None, source)
}
pub fn decode_null<R>(source: &mut R) -> IoResult<Option<()>> where R: Read {
match crate::decode_value(Some(&[crate::value::NULL]), source)? {
Some(Value::Null) => Ok(Some(())),
Some(other) => Err(io::Error::new(ErrorKind::InvalidData, __!("expected null, got: {:?}", &other))),
None => Ok(None),
}
}
pub fn decode_bool<R>(source: &mut R) -> IoResult<Option<bool>> where R: Read {
match crate::decode_value(Some(&[crate::value::TRUE, crate::value::FALSE]), source)? {
Some(Value::True) => Ok(Some(true)),
Some(Value::False) => Ok(Some(false)),
Some(other) => Err(io::Error::new(ErrorKind::InvalidData, __!("expected bool, got: {:?}", &other))),
None => Ok(None),
}
}
pub fn decode_u8<R>(source: &mut R) -> IoResult<Option<u8>> where R: Read {
match crate::decode_value(Some(&[crate::value::U8]), source)? {
Some(Value::U8(u)) => Ok(Some(u)),
Some(other) => Err(io::Error::new(ErrorKind::InvalidData, __!("expected u8, got: {:?}", &other))),
None => Ok(None),
}
}
pub fn decode_i8<R>(source: &mut R) -> IoResult<Option<i8>> where R: Read {
match crate::decode_value(Some(&[crate::value::I8]), source)? {
Some(Value::I8(i)) => Ok(Some(i)),
Some(other) => Err(io::Error::new(ErrorKind::InvalidData, __!("expected i8, got: {:?}", &other))),
None => Ok(None),
}
}
pub fn decode_u16<R>(source: &mut R) -> IoResult<Option<u16>> where R: Read {
match crate::decode_value(Some(&[crate::value::U16]), source)? {
Some(Value::U16(u)) => Ok(Some(u)),
Some(other) => Err(io::Error::new(ErrorKind::InvalidData, __!("expected u16, got: {:?}", &other))),
None => Ok(None),
}
}
pub fn decode_i16<R>(source: &mut R) -> IoResult<Option<i16>> where R: Read {
match crate::decode_value(Some(&[crate::value::I16]), source)? {
Some(Value::I16(i)) => Ok(Some(i)),
Some(other) => Err(io::Error::new(ErrorKind::InvalidData, __!("expected i16, got: {:?}", &other))),
None => Ok(None),
}
}
pub fn decode_u32<R>(source: &mut R) -> IoResult<Option<u32>> where R: Read {
match crate::decode_value(Some(&[crate::value::U32]), source)? {
Some(Value::U32(u)) => Ok(Some(u)),
Some(other) => Err(io::Error::new(ErrorKind::InvalidData, __!("expected u32, got: {:?}", &other))),
None => Ok(None),
}
}
pub fn decode_i32<R>(source: &mut R) -> IoResult<Option<i32>> where R: Read {
match crate::decode_value(Some(&[crate::value::I32]), source)? {
Some(Value::I32(i)) => Ok(Some(i)),
Some(other) => Err(io::Error::new(ErrorKind::InvalidData, __!("expected i32, got: {:?}", &other))),
None => Ok(None),
}
}
pub fn decode_u64<R>(source: &mut R) -> IoResult<Option<u64>> where R: Read {
match crate::decode_value(Some(&[crate::value::U64]), source)? {
Some(Value::U64(u)) => Ok(Some(u)),
Some(other) => Err(io::Error::new(ErrorKind::InvalidData, __!("expected u64, got: {:?}", &other))),
None => Ok(None),
}
}
pub fn decode_i64<R>(source: &mut R) -> IoResult<Option<i64>> where R: Read {
match crate::decode_value(Some(&[crate::value::I64]), source)? {
Some(Value::I64(i)) => Ok(Some(i)),
Some(other) => Err(io::Error::new(ErrorKind::InvalidData, __!("expected i64, got: {:?}", &other))),
None => Ok(None),
}
}
pub fn decode_float<R>(source: &mut R) -> IoResult<Option<f32>> where R: Read {
match crate::decode_value(Some(&[crate::value::FLOAT]), source)? {
Some(Value::Float(f)) => Ok(Some(f)),
Some(other) => Err(io::Error::new(ErrorKind::InvalidData, __!("expected float, got: {:?}", &other))),
None => Ok(None),
}
}
pub fn decode_double<R>(source: &mut R) -> IoResult<Option<f64>> where R: Read {
match crate::decode_value(Some(&[crate::value::DOUBLE]), source)? {
Some(Value::Double(d)) => Ok(Some(d)),
Some(other) => Err(io::Error::new(ErrorKind::InvalidData, __!("expected double, got: {:?}", &other))),
None => Ok(None),
}
}
pub fn decode_text<R>(source: &mut R) -> IoResult<Option<String>> where R: Read {
match crate::decode_value(Some(&[crate::value::TEXT]), source)? {
Some(Value::Text(t)) => Ok(Some(t)),
Some(other) => Err(io::Error::new(ErrorKind::InvalidData, __!("expected text, got: {:?}", &other))),
None => Ok(None),
}
}
pub fn decode_date_time<R>(source: &mut R) -> IoResult<Option<String>> where R: Read {
match crate::decode_value(Some(&[crate::value::DATE_TIME]), source)? {
Some(Value::DateTime(dt)) => Ok(Some(dt)),
Some(other) => Err(io::Error::new(ErrorKind::InvalidData, __!("expected date_time, got: {:?}", &other))),
None => Ok(None),
}
}
pub fn decode_date<R>(source: &mut R) -> IoResult<Option<String>> where R: Read {
match crate::decode_value(Some(&[crate::value::DATE]), source)? {
Some(Value::Date(d)) => Ok(Some(d)),
Some(other) => Err(io::Error::new(ErrorKind::InvalidData, __!("expected date, got: {:?}", &other))),
None => Ok(None),
}
}
pub fn decode_time<R>(source: &mut R) -> IoResult<Option<String>> where R: Read {
match crate::decode_value(Some(&[crate::value::TIME]), source)? {
Some(Value::Time(t)) => Ok(Some(t)),
Some(other) => Err(io::Error::new(ErrorKind::InvalidData, __!("expected time, got: {:?}", &other))),
None => Ok(None),
}
}
pub fn decode_decimal_str<R>(source: &mut R) -> IoResult<Option<String>> where R: Read {
match crate::decode_value(Some(&[crate::value::DECIMAL_STR]), source)? {
Some(Value::DecimalStr(ds)) => Ok(Some(ds)),
Some(other) => Err(io::Error::new(ErrorKind::InvalidData, __!("expected decimal_str, got: {:?}", &other))),
None => Ok(None),
}
}
pub fn decode_blob<R>(source: &mut R) -> IoResult<Option<Blob>> where R: Read {
match crate::decode_value(Some(&[crate::value::BLOB]), source)? {
Some(Value::Blob(bytes)) => Ok(Some(bytes)),
Some(other) => Err(io::Error::new(ErrorKind::InvalidData, __!("expected blob, got: {:?}", &other))),
None => Ok(None),
}
}
pub fn decode_list<R>(source: &mut R) -> IoResult<Option<List>> where R: Read {
match crate::decode_value(Some(&[crate::value::LIST]), source)? {
Some(Value::List(list)) => Ok(Some(list)),
Some(other) => Err(io::Error::new(ErrorKind::InvalidData, __!("expected list, got: {:?}", &other))),
None => Ok(None),
}
}
pub fn decode_map<R>(source: &mut R) -> IoResult<Option<Map>> where R: Read {
match crate::decode_value(Some(&[crate::value::MAP]), source)? {
Some(Value::Map(map)) => Ok(Some(map)),
Some(other) => Err(io::Error::new(ErrorKind::InvalidData, __!("expected map, got: {:?}", &other))),
None => Ok(None),
}
}
pub fn decode_object<R>(source: &mut R) -> IoResult<Option<Object>> where R: Read {
match crate::decode_value(Some(&[crate::value::OBJECT]), source)? {
Some(Value::Object(object)) => Ok(Some(object)),
Some(other) => Err(io::Error::new(ErrorKind::InvalidData, __!("expected object, got: {:?}", &other))),
None => Ok(None),
}
}