1386 lines
41 KiB
Rust
1386 lines
41 KiB
Rust
use std::fmt;
|
|
use std::iter;
|
|
use std::error;
|
|
|
|
extern crate serde;
|
|
use self::serde::ser::{self, Serialize};
|
|
use self::serde::de;
|
|
use self::serde::de::value::{self, ValueDeserializer};
|
|
|
|
#[derive(Clone, PartialEq, Debug)]
|
|
pub enum Token<'a> {
|
|
Bool(bool),
|
|
Isize(isize),
|
|
I8(i8),
|
|
I16(i16),
|
|
I32(i32),
|
|
I64(i64),
|
|
Usize(usize),
|
|
U8(u8),
|
|
U16(u16),
|
|
U32(u32),
|
|
U64(u64),
|
|
F32(f32),
|
|
F64(f64),
|
|
Char(char),
|
|
Str(&'a str),
|
|
String(String),
|
|
Bytes(&'a [u8]),
|
|
|
|
Option(bool),
|
|
|
|
Unit,
|
|
UnitStruct(&'a str),
|
|
|
|
StructNewType(&'a str),
|
|
|
|
EnumStart(&'a str),
|
|
EnumUnit(&'a str, &'a str),
|
|
EnumNewType(&'a str, &'a str),
|
|
|
|
SeqStart(Option<usize>),
|
|
SeqArrayStart(usize),
|
|
SeqSep,
|
|
SeqEnd,
|
|
|
|
TupleStart(usize),
|
|
TupleSep,
|
|
TupleEnd,
|
|
|
|
TupleStructStart(&'a str, Option<usize>),
|
|
TupleStructSep,
|
|
TupleStructEnd,
|
|
|
|
MapStart(Option<usize>),
|
|
MapSep,
|
|
MapEnd,
|
|
|
|
StructStart(&'a str, Option<usize>),
|
|
StructSep,
|
|
StructEnd,
|
|
|
|
EnumSeqStart(&'a str, &'a str, Option<usize>),
|
|
EnumSeqSep,
|
|
EnumSeqEnd,
|
|
|
|
EnumMapStart(&'a str, &'a str, Option<usize>),
|
|
EnumMapSep,
|
|
EnumMapEnd,
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
|
|
pub struct Serializer<I> {
|
|
tokens: I,
|
|
}
|
|
|
|
impl<'a, I> Serializer<I>
|
|
where I: Iterator<Item=&'a Token<'a>>
|
|
{
|
|
pub fn new(tokens: I) -> Serializer<I> {
|
|
Serializer {
|
|
tokens: tokens,
|
|
}
|
|
}
|
|
|
|
fn visit_sequence<V>(&mut self, mut visitor: V) -> Result<(), Error>
|
|
where V: ser::SeqVisitor
|
|
{
|
|
while let Some(()) = try!(visitor.visit(self)) { }
|
|
|
|
assert_eq!(self.tokens.next(), Some(&Token::SeqEnd));
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn visit_mapping<V>(&mut self, mut visitor: V) -> Result<(), Error>
|
|
where V: ser::MapVisitor
|
|
{
|
|
while let Some(()) = try!(visitor.visit(self)) { }
|
|
|
|
assert_eq!(self.tokens.next(), Some(&Token::MapEnd));
|
|
|
|
Ok(())
|
|
}
|
|
}
|
|
|
|
impl<'a, I> ser::Serializer for Serializer<I>
|
|
where I: Iterator<Item=&'a Token<'a>>,
|
|
{
|
|
type Error = Error;
|
|
|
|
fn serialize_unit(&mut self) -> Result<(), Error> {
|
|
assert_eq!(self.tokens.next(), Some(&Token::Unit));
|
|
Ok(())
|
|
}
|
|
|
|
fn serialize_newtype_variant<T>(&mut self,
|
|
name: &str,
|
|
_variant_index: usize,
|
|
variant: &str,
|
|
value: T) -> Result<(), Error>
|
|
where T: ser::Serialize,
|
|
{
|
|
assert_eq!(self.tokens.next(), Some(&Token::EnumNewType(name, variant)));
|
|
value.serialize(self)
|
|
}
|
|
|
|
fn serialize_unit_struct(&mut self, name: &str) -> Result<(), Error> {
|
|
assert_eq!(self.tokens.next(), Some(&Token::UnitStruct(name)));
|
|
Ok(())
|
|
}
|
|
|
|
fn serialize_unit_variant(&mut self,
|
|
name: &str,
|
|
_variant_index: usize,
|
|
variant: &str) -> Result<(), Error> {
|
|
assert_eq!(self.tokens.next(), Some(&Token::EnumUnit(name, variant)));
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn serialize_bool(&mut self, v: bool) -> Result<(), Error> {
|
|
assert_eq!(self.tokens.next(), Some(&Token::Bool(v)));
|
|
Ok(())
|
|
}
|
|
|
|
fn serialize_isize(&mut self, v: isize) -> Result<(), Error> {
|
|
assert_eq!(self.tokens.next(), Some(&Token::Isize(v)));
|
|
Ok(())
|
|
}
|
|
|
|
fn serialize_i8(&mut self, v: i8) -> Result<(), Error> {
|
|
assert_eq!(self.tokens.next(), Some(&Token::I8(v)));
|
|
Ok(())
|
|
}
|
|
|
|
fn serialize_i16(&mut self, v: i16) -> Result<(), Error> {
|
|
assert_eq!(self.tokens.next(), Some(&Token::I16(v)));
|
|
Ok(())
|
|
}
|
|
|
|
fn serialize_i32(&mut self, v: i32) -> Result<(), Error> {
|
|
assert_eq!(self.tokens.next(), Some(&Token::I32(v)));
|
|
Ok(())
|
|
}
|
|
|
|
fn serialize_i64(&mut self, v: i64) -> Result<(), Error> {
|
|
assert_eq!(self.tokens.next(), Some(&Token::I64(v)));
|
|
Ok(())
|
|
}
|
|
|
|
fn serialize_usize(&mut self, v: usize) -> Result<(), Error> {
|
|
assert_eq!(self.tokens.next(), Some(&Token::Usize(v)));
|
|
Ok(())
|
|
}
|
|
|
|
fn serialize_u8(&mut self, v: u8) -> Result<(), Error> {
|
|
assert_eq!(self.tokens.next(), Some(&Token::U8(v)));
|
|
Ok(())
|
|
}
|
|
|
|
fn serialize_u16(&mut self, v: u16) -> Result<(), Error> {
|
|
assert_eq!(self.tokens.next(), Some(&Token::U16(v)));
|
|
Ok(())
|
|
}
|
|
|
|
fn serialize_u32(&mut self, v: u32) -> Result<(), Error> {
|
|
assert_eq!(self.tokens.next(), Some(&Token::U32(v)));
|
|
Ok(())
|
|
}
|
|
|
|
fn serialize_u64(&mut self, v: u64) -> Result<(), Error> {
|
|
assert_eq!(self.tokens.next(), Some(&Token::U64(v)));
|
|
Ok(())
|
|
}
|
|
|
|
fn serialize_f32(&mut self, v: f32) -> Result<(), Error> {
|
|
assert_eq!(self.tokens.next(), Some(&Token::F32(v)));
|
|
Ok(())
|
|
}
|
|
|
|
fn serialize_f64(&mut self, v: f64) -> Result<(), Error> {
|
|
assert_eq!(self.tokens.next(), Some(&Token::F64(v)));
|
|
Ok(())
|
|
}
|
|
|
|
fn serialize_char(&mut self, v: char) -> Result<(), Error> {
|
|
assert_eq!(self.tokens.next(), Some(&Token::Char(v)));
|
|
Ok(())
|
|
}
|
|
|
|
fn serialize_str(&mut self, v: &str) -> Result<(), Error> {
|
|
assert_eq!(self.tokens.next(), Some(&Token::Str(v)));
|
|
Ok(())
|
|
}
|
|
|
|
fn serialize_none(&mut self) -> Result<(), Error> {
|
|
assert_eq!(self.tokens.next(), Some(&Token::Option(false)));
|
|
Ok(())
|
|
}
|
|
|
|
fn serialize_some<V>(&mut self, value: V) -> Result<(), Error>
|
|
where V: ser::Serialize,
|
|
{
|
|
assert_eq!(self.tokens.next(), Some(&Token::Option(true)));
|
|
value.serialize(self)
|
|
}
|
|
|
|
|
|
fn serialize_seq<V>(&mut self, visitor: V) -> Result<(), Error>
|
|
where V: ser::SeqVisitor
|
|
{
|
|
let len = visitor.len();
|
|
|
|
assert_eq!(self.tokens.next(), Some(&Token::SeqStart(len)));
|
|
|
|
self.visit_sequence(visitor)
|
|
}
|
|
|
|
fn serialize_fixed_size_array<V>(&mut self, visitor: V) -> Result<(), Error>
|
|
where V: ser::SeqVisitor
|
|
{
|
|
let len = visitor.len().expect("arrays must have a length");
|
|
|
|
assert_eq!(self.tokens.next(), Some(&Token::SeqArrayStart(len)));
|
|
|
|
self.visit_sequence(visitor)
|
|
}
|
|
|
|
fn serialize_seq_elt<T>(&mut self, value: T) -> Result<(), Error>
|
|
where T: ser::Serialize
|
|
{
|
|
assert_eq!(self.tokens.next(), Some(&Token::SeqSep));
|
|
value.serialize(self)
|
|
}
|
|
|
|
fn serialize_tuple<V>(&mut self, mut visitor: V) -> Result<(), Error>
|
|
where V: ser::SeqVisitor
|
|
{
|
|
let len = visitor.len().expect("arrays must have a length");
|
|
|
|
assert_eq!(self.tokens.next(), Some(&Token::TupleStart(len)));
|
|
|
|
while let Some(()) = try!(visitor.visit(self)) { }
|
|
|
|
assert_eq!(self.tokens.next(), Some(&Token::TupleEnd));
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn serialize_tuple_elt<T>(&mut self, value: T) -> Result<(), Error>
|
|
where T: ser::Serialize
|
|
{
|
|
assert_eq!(self.tokens.next(), Some(&Token::TupleSep));
|
|
value.serialize(self)
|
|
}
|
|
|
|
fn serialize_newtype_struct<T>(&mut self,
|
|
name: &'static str,
|
|
value: T) -> Result<(), Error>
|
|
where T: ser::Serialize,
|
|
{
|
|
assert_eq!(self.tokens.next(), Some(&Token::StructNewType(name)));
|
|
value.serialize(self)
|
|
}
|
|
|
|
fn serialize_tuple_struct<V>(&mut self, name: &str, mut visitor: V) -> Result<(), Error>
|
|
where V: ser::SeqVisitor
|
|
{
|
|
let len = visitor.len();
|
|
|
|
assert_eq!(self.tokens.next(), Some(&Token::TupleStructStart(name, len)));
|
|
|
|
while let Some(()) = try!(visitor.visit(self)) { }
|
|
|
|
assert_eq!(self.tokens.next(), Some(&Token::TupleStructEnd));
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn serialize_tuple_struct_elt<T>(&mut self, value: T) -> Result<(), Error>
|
|
where T: ser::Serialize,
|
|
{
|
|
assert_eq!(self.tokens.next(), Some(&Token::TupleStructSep));
|
|
value.serialize(self)
|
|
}
|
|
|
|
fn serialize_tuple_variant<V>(&mut self,
|
|
name: &str,
|
|
_variant_index: usize,
|
|
variant: &str,
|
|
mut visitor: V) -> Result<(), Error>
|
|
where V: ser::SeqVisitor
|
|
{
|
|
let len = visitor.len();
|
|
|
|
assert_eq!(self.tokens.next(), Some(&Token::EnumSeqStart(name, variant, len)));
|
|
|
|
while let Some(()) = try!(visitor.visit(self)) { }
|
|
|
|
assert_eq!(self.tokens.next(), Some(&Token::EnumSeqEnd));
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn serialize_tuple_variant_elt<T>(&mut self, value: T) -> Result<(), Error>
|
|
where T: ser::Serialize,
|
|
{
|
|
assert_eq!(self.tokens.next(), Some(&Token::EnumSeqSep));
|
|
value.serialize(self)
|
|
}
|
|
|
|
fn serialize_map<V>(&mut self, visitor: V) -> Result<(), Error>
|
|
where V: ser::MapVisitor
|
|
{
|
|
let len = visitor.len();
|
|
|
|
assert_eq!(self.tokens.next(), Some(&Token::MapStart(len)));
|
|
|
|
self.visit_mapping(visitor)
|
|
}
|
|
|
|
fn serialize_map_elt<K, V>(&mut self, key: K, value: V) -> Result<(), Error>
|
|
where K: ser::Serialize,
|
|
V: ser::Serialize,
|
|
{
|
|
assert_eq!(self.tokens.next(), Some(&Token::MapSep));
|
|
|
|
try!(key.serialize(self));
|
|
value.serialize(self)
|
|
}
|
|
|
|
fn serialize_struct<V>(&mut self, name: &str, mut visitor: V) -> Result<(), Error>
|
|
where V: ser::MapVisitor
|
|
{
|
|
let len = visitor.len();
|
|
|
|
assert_eq!(self.tokens.next(), Some(&Token::StructStart(name, len)));
|
|
|
|
while let Some(()) = try!(visitor.visit(self)) { }
|
|
|
|
assert_eq!(self.tokens.next(), Some(&Token::StructEnd));
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn serialize_struct_elt<T>(&mut self, key: &'static str, value: T) -> Result<(), Error>
|
|
where T: ser::Serialize,
|
|
{
|
|
assert_eq!(self.tokens.next(), Some(&Token::StructSep));
|
|
|
|
try!(key.serialize(self));
|
|
value.serialize(self)
|
|
}
|
|
|
|
fn serialize_struct_variant<V>(&mut self,
|
|
name: &str,
|
|
_variant_index: usize,
|
|
variant: &str,
|
|
mut visitor: V) -> Result<(), Error>
|
|
where V: ser::MapVisitor
|
|
{
|
|
let len = visitor.len();
|
|
|
|
assert_eq!(self.tokens.next(), Some(&Token::EnumMapStart(name, variant, len)));
|
|
|
|
while let Some(()) = try!(visitor.visit(self)) { }
|
|
|
|
assert_eq!(self.tokens.next(), Some(&Token::EnumMapEnd));
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn serialize_struct_variant_elt<T>(&mut self, key: &'static str, value: T) -> Result<(), Error>
|
|
where T: ser::Serialize,
|
|
{
|
|
assert_eq!(self.tokens.next(), Some(&Token::EnumMapSep));
|
|
|
|
try!(key.serialize(self));
|
|
value.serialize(self)
|
|
}
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
|
|
#[derive(Clone, PartialEq, Debug)]
|
|
pub enum Error {
|
|
SyntaxError,
|
|
EndOfStreamError,
|
|
UnknownFieldError(String),
|
|
UnknownVariantError(String),
|
|
MissingFieldError(&'static str),
|
|
InvalidName(&'static str),
|
|
InvalidValue(String),
|
|
UnexpectedToken(Token<'static>),
|
|
ValueError(value::Error),
|
|
}
|
|
|
|
impl ser::Error for Error {
|
|
fn custom<T: Into<String>>(_: T) -> Error { Error::SyntaxError }
|
|
|
|
fn invalid_value(msg: &str) -> Error {
|
|
Error::InvalidValue(msg.to_owned())
|
|
}
|
|
}
|
|
|
|
impl de::Error for Error {
|
|
fn custom<T: Into<String>>(_: T) -> Error { Error::SyntaxError }
|
|
|
|
fn end_of_stream() -> Error { Error::EndOfStreamError }
|
|
|
|
fn unknown_field(field: &str) -> Error {
|
|
Error::UnknownFieldError(field.to_owned())
|
|
}
|
|
|
|
fn unknown_variant(variant: &str) -> Error {
|
|
Error::UnknownVariantError(variant.to_owned())
|
|
}
|
|
|
|
fn missing_field(field: &'static str) -> Error {
|
|
Error::MissingFieldError(field)
|
|
}
|
|
}
|
|
|
|
impl fmt::Display for Error {
|
|
fn fmt(&self, formatter: &mut fmt::Formatter) -> Result<(), fmt::Error> {
|
|
formatter.write_str(format!("{:?}", self).as_ref())
|
|
}
|
|
}
|
|
|
|
impl error::Error for Error {
|
|
fn description(&self) -> &str {
|
|
"Serde Deserialization Error"
|
|
}
|
|
|
|
fn cause(&self) -> Option<&error::Error> {
|
|
None
|
|
}
|
|
}
|
|
|
|
impl From<value::Error> for Error {
|
|
fn from(error: value::Error) -> Error {
|
|
Error::ValueError(error)
|
|
}
|
|
}
|
|
|
|
struct Deserializer<I> where I: Iterator<Item=Token<'static>> {
|
|
tokens: iter::Peekable<I>,
|
|
}
|
|
|
|
impl<I> Deserializer<I>
|
|
where I: Iterator<Item=Token<'static>>
|
|
{
|
|
fn new(tokens: I) -> Deserializer<I> {
|
|
Deserializer {
|
|
tokens: tokens.peekable(),
|
|
}
|
|
}
|
|
|
|
fn visit_seq<V>(&mut self, len: Option<usize>, mut visitor: V) -> Result<V::Value, Error>
|
|
where V: de::Visitor,
|
|
{
|
|
visitor.visit_seq(DeserializerSeqVisitor {
|
|
de: self,
|
|
len: len,
|
|
})
|
|
}
|
|
|
|
fn visit_array<V>(&mut self, len: usize, mut visitor: V) -> Result<V::Value, Error>
|
|
where V: de::Visitor,
|
|
{
|
|
visitor.visit_seq(DeserializerArrayVisitor {
|
|
de: self,
|
|
len: len,
|
|
})
|
|
}
|
|
|
|
fn visit_tuple<V>(&mut self, len: usize, mut visitor: V) -> Result<V::Value, Error>
|
|
where V: de::Visitor,
|
|
{
|
|
visitor.visit_seq(DeserializerTupleVisitor {
|
|
de: self,
|
|
len: len,
|
|
})
|
|
}
|
|
|
|
fn visit_tuple_struct<V>(&mut self, len: usize, mut visitor: V) -> Result<V::Value, Error>
|
|
where V: de::Visitor,
|
|
{
|
|
visitor.visit_seq(DeserializerTupleStructVisitor {
|
|
de: self,
|
|
len: len,
|
|
})
|
|
}
|
|
|
|
fn visit_variant_seq<V>(&mut self, len: Option<usize>, mut visitor: V) -> Result<V::Value, Error>
|
|
where V: de::Visitor,
|
|
{
|
|
visitor.visit_seq(DeserializerVariantSeqVisitor {
|
|
de: self,
|
|
len: len,
|
|
})
|
|
}
|
|
|
|
fn visit_map<V>(&mut self, len: Option<usize>, mut visitor: V) -> Result<V::Value, Error>
|
|
where V: de::Visitor,
|
|
{
|
|
visitor.visit_map(DeserializerMapVisitor {
|
|
de: self,
|
|
len: len,
|
|
})
|
|
}
|
|
|
|
fn visit_struct<V>(&mut self, len: Option<usize>, mut visitor: V) -> Result<V::Value, Error>
|
|
where V: de::Visitor,
|
|
{
|
|
visitor.visit_map(DeserializerStructVisitor {
|
|
de: self,
|
|
len: len,
|
|
})
|
|
}
|
|
|
|
fn visit_variant_map<V>(&mut self, len: Option<usize>, mut visitor: V) -> Result<V::Value, Error>
|
|
where V: de::Visitor,
|
|
{
|
|
visitor.visit_map(DeserializerVariantMapVisitor {
|
|
de: self,
|
|
len: len,
|
|
})
|
|
}
|
|
}
|
|
|
|
impl<I> de::Deserializer for Deserializer<I>
|
|
where I: Iterator<Item=Token<'static>>
|
|
{
|
|
type Error = Error;
|
|
|
|
fn deserialize<V>(&mut self, mut visitor: V) -> Result<V::Value, Error>
|
|
where V: de::Visitor,
|
|
{
|
|
match self.tokens.next() {
|
|
Some(Token::Bool(v)) => visitor.visit_bool(v),
|
|
Some(Token::Isize(v)) => visitor.visit_isize(v),
|
|
Some(Token::I8(v)) => visitor.visit_i8(v),
|
|
Some(Token::I16(v)) => visitor.visit_i16(v),
|
|
Some(Token::I32(v)) => visitor.visit_i32(v),
|
|
Some(Token::I64(v)) => visitor.visit_i64(v),
|
|
Some(Token::Usize(v)) => visitor.visit_usize(v),
|
|
Some(Token::U8(v)) => visitor.visit_u8(v),
|
|
Some(Token::U16(v)) => visitor.visit_u16(v),
|
|
Some(Token::U32(v)) => visitor.visit_u32(v),
|
|
Some(Token::U64(v)) => visitor.visit_u64(v),
|
|
Some(Token::F32(v)) => visitor.visit_f32(v),
|
|
Some(Token::F64(v)) => visitor.visit_f64(v),
|
|
Some(Token::Char(v)) => visitor.visit_char(v),
|
|
Some(Token::Str(v)) => visitor.visit_str(v),
|
|
Some(Token::String(v)) => visitor.visit_string(v),
|
|
Some(Token::Bytes(v)) => visitor.visit_bytes(v),
|
|
Some(Token::Option(false)) => visitor.visit_none(),
|
|
Some(Token::Option(true)) => visitor.visit_some(self),
|
|
Some(Token::Unit) => visitor.visit_unit(),
|
|
Some(Token::UnitStruct(name)) => visitor.visit_unit_struct(name),
|
|
Some(Token::SeqStart(len)) | Some(Token::TupleStructStart(_, len)) => {
|
|
self.visit_seq(len, visitor)
|
|
}
|
|
Some(Token::SeqArrayStart(len)) => {
|
|
self.visit_seq(Some(len), visitor)
|
|
}
|
|
Some(Token::MapStart(len)) | Some(Token::StructStart(_, len)) => {
|
|
self.visit_map(len, visitor)
|
|
}
|
|
Some(token) => Err(Error::UnexpectedToken(token)),
|
|
None => Err(Error::EndOfStreamError),
|
|
}
|
|
}
|
|
|
|
/// Hook into `Option` deserializing so we can treat `Unit` as a
|
|
/// `None`, or a regular value as `Some(value)`.
|
|
fn deserialize_option<V>(&mut self, mut visitor: V) -> Result<V::Value, Error>
|
|
where V: de::Visitor,
|
|
{
|
|
match self.tokens.peek() {
|
|
Some(&Token::Option(false)) => {
|
|
self.tokens.next();
|
|
visitor.visit_none()
|
|
}
|
|
Some(&Token::Option(true)) => {
|
|
self.tokens.next();
|
|
visitor.visit_some(self)
|
|
}
|
|
Some(&Token::Unit) => {
|
|
self.tokens.next();
|
|
visitor.visit_none()
|
|
}
|
|
Some(_) => visitor.visit_some(self),
|
|
None => Err(Error::EndOfStreamError),
|
|
}
|
|
}
|
|
|
|
fn deserialize_enum<V>(&mut self,
|
|
name: &str,
|
|
_variants: &'static [&'static str],
|
|
mut visitor: V) -> Result<V::Value, Error>
|
|
where V: de::EnumVisitor,
|
|
{
|
|
match self.tokens.peek() {
|
|
Some(&Token::EnumStart(n)) if name == n => {
|
|
self.tokens.next();
|
|
|
|
visitor.visit(DeserializerVariantVisitor {
|
|
de: self,
|
|
})
|
|
}
|
|
Some(&Token::EnumUnit(n, _))
|
|
| Some(&Token::EnumNewType(n, _))
|
|
| Some(&Token::EnumSeqStart(n, _, _))
|
|
| Some(&Token::EnumMapStart(n, _, _)) if name == n => {
|
|
visitor.visit(DeserializerVariantVisitor {
|
|
de: self,
|
|
})
|
|
}
|
|
Some(_) => {
|
|
let token = self.tokens.next().unwrap();
|
|
Err(Error::UnexpectedToken(token))
|
|
}
|
|
None => { return Err(Error::EndOfStreamError); }
|
|
}
|
|
}
|
|
|
|
fn deserialize_unit_struct<V>(&mut self, name: &str, mut visitor: V) -> Result<V::Value, Error>
|
|
where V: de::Visitor,
|
|
{
|
|
match self.tokens.peek() {
|
|
Some(&Token::UnitStruct(n)) => {
|
|
self.tokens.next();
|
|
if name == n {
|
|
visitor.visit_unit()
|
|
} else {
|
|
Err(Error::InvalidName(n))
|
|
}
|
|
}
|
|
Some(_) => self.deserialize(visitor),
|
|
None => Err(Error::EndOfStreamError),
|
|
}
|
|
}
|
|
|
|
fn deserialize_newtype_struct<V>(&mut self,
|
|
name: &str,
|
|
mut visitor: V) -> Result<V::Value, Error>
|
|
where V: de::Visitor,
|
|
{
|
|
match self.tokens.peek() {
|
|
Some(&Token::StructNewType(n)) => {
|
|
self.tokens.next();
|
|
if name == n {
|
|
visitor.visit_newtype_struct(self)
|
|
} else {
|
|
Err(Error::InvalidName(n))
|
|
}
|
|
}
|
|
Some(_) => self.deserialize(visitor),
|
|
None => Err(Error::EndOfStreamError),
|
|
}
|
|
}
|
|
|
|
fn deserialize_fixed_size_array<V>(&mut self,
|
|
len: usize,
|
|
visitor: V) -> Result<V::Value, Error>
|
|
where V: de::Visitor,
|
|
{
|
|
match self.tokens.peek() {
|
|
Some(&Token::SeqArrayStart(_)) => {
|
|
self.tokens.next();
|
|
self.visit_array(len, visitor)
|
|
}
|
|
Some(_) => self.deserialize(visitor),
|
|
None => Err(Error::EndOfStreamError),
|
|
}
|
|
}
|
|
|
|
fn deserialize_tuple<V>(&mut self,
|
|
len: usize,
|
|
mut visitor: V) -> Result<V::Value, Error>
|
|
where V: de::Visitor,
|
|
{
|
|
match self.tokens.peek() {
|
|
Some(&Token::Unit) => {
|
|
self.tokens.next();
|
|
visitor.visit_unit()
|
|
}
|
|
Some(&Token::UnitStruct(_)) => {
|
|
self.tokens.next();
|
|
visitor.visit_unit()
|
|
}
|
|
Some(&Token::SeqStart(_)) => {
|
|
self.tokens.next();
|
|
self.visit_seq(Some(len), visitor)
|
|
}
|
|
Some(&Token::SeqArrayStart(_)) => {
|
|
self.tokens.next();
|
|
self.visit_array(len, visitor)
|
|
}
|
|
Some(&Token::TupleStart(_)) => {
|
|
self.tokens.next();
|
|
self.visit_tuple(len, visitor)
|
|
}
|
|
Some(&Token::TupleStructStart(_, _)) => {
|
|
self.tokens.next();
|
|
self.visit_tuple_struct(len, visitor)
|
|
}
|
|
Some(_) => self.deserialize(visitor),
|
|
None => Err(Error::EndOfStreamError),
|
|
}
|
|
}
|
|
|
|
fn deserialize_tuple_struct<V>(&mut self,
|
|
name: &str,
|
|
len: usize,
|
|
mut visitor: V) -> Result<V::Value, Error>
|
|
where V: de::Visitor,
|
|
{
|
|
match self.tokens.peek() {
|
|
Some(&Token::Unit) => {
|
|
self.tokens.next();
|
|
visitor.visit_unit()
|
|
}
|
|
Some(&Token::UnitStruct(n)) => {
|
|
self.tokens.next();
|
|
if name == n {
|
|
visitor.visit_unit()
|
|
} else {
|
|
Err(Error::InvalidName(n))
|
|
}
|
|
}
|
|
Some(&Token::SeqStart(_)) => {
|
|
self.tokens.next();
|
|
self.visit_seq(Some(len), visitor)
|
|
}
|
|
Some(&Token::SeqArrayStart(_)) => {
|
|
self.tokens.next();
|
|
self.visit_array(len, visitor)
|
|
}
|
|
Some(&Token::TupleStart(_)) => {
|
|
self.tokens.next();
|
|
self.visit_tuple(len, visitor)
|
|
}
|
|
Some(&Token::TupleStructStart(n, _)) => {
|
|
self.tokens.next();
|
|
if name == n {
|
|
self.visit_tuple_struct(len, visitor)
|
|
} else {
|
|
Err(Error::InvalidName(n))
|
|
}
|
|
}
|
|
Some(_) => self.deserialize(visitor),
|
|
None => Err(Error::EndOfStreamError),
|
|
}
|
|
}
|
|
|
|
fn deserialize_struct<V>(&mut self,
|
|
name: &str,
|
|
fields: &'static [&'static str],
|
|
visitor: V) -> Result<V::Value, Error>
|
|
where V: de::Visitor,
|
|
{
|
|
match self.tokens.peek() {
|
|
Some(&Token::StructStart(n, _)) => {
|
|
self.tokens.next();
|
|
if name == n {
|
|
self.visit_struct(Some(fields.len()), visitor)
|
|
} else {
|
|
Err(Error::InvalidName(n))
|
|
}
|
|
}
|
|
Some(&Token::MapStart(_)) => {
|
|
self.tokens.next();
|
|
self.visit_map(Some(fields.len()), visitor)
|
|
}
|
|
Some(_) => self.deserialize(visitor),
|
|
None => Err(Error::EndOfStreamError),
|
|
}
|
|
}
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////////
|
|
|
|
struct DeserializerSeqVisitor<'a, I: 'a> where I: Iterator<Item=Token<'static>> {
|
|
de: &'a mut Deserializer<I>,
|
|
len: Option<usize>,
|
|
}
|
|
|
|
impl<'a, I> de::SeqVisitor for DeserializerSeqVisitor<'a, I>
|
|
where I: Iterator<Item=Token<'static>>,
|
|
{
|
|
type Error = Error;
|
|
|
|
fn visit<T>(&mut self) -> Result<Option<T>, Error>
|
|
where T: de::Deserialize,
|
|
{
|
|
match self.de.tokens.peek() {
|
|
Some(&Token::SeqSep) => {
|
|
self.de.tokens.next();
|
|
self.len = self.len.map(|len| len - 1);
|
|
Ok(Some(try!(de::Deserialize::deserialize(self.de))))
|
|
}
|
|
Some(&Token::SeqEnd) => Ok(None),
|
|
Some(_) => {
|
|
let token = self.de.tokens.next().unwrap();
|
|
Err(Error::UnexpectedToken(token))
|
|
}
|
|
None => Err(Error::EndOfStreamError),
|
|
}
|
|
}
|
|
|
|
fn end(&mut self) -> Result<(), Error> {
|
|
//assert_eq!(self.len.unwrap_or(0), 0);
|
|
match self.de.tokens.next() {
|
|
Some(Token::SeqEnd) => Ok(()),
|
|
Some(token) => Err(Error::UnexpectedToken(token)),
|
|
None => Err(Error::EndOfStreamError),
|
|
}
|
|
}
|
|
|
|
fn size_hint(&self) -> (usize, Option<usize>) {
|
|
let len = self.len.unwrap_or(0);
|
|
(len, self.len)
|
|
}
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////////
|
|
|
|
struct DeserializerArrayVisitor<'a, I: 'a> where I: Iterator<Item=Token<'static>> {
|
|
de: &'a mut Deserializer<I>,
|
|
len: usize,
|
|
}
|
|
|
|
impl<'a, I> de::SeqVisitor for DeserializerArrayVisitor<'a, I>
|
|
where I: Iterator<Item=Token<'static>>,
|
|
{
|
|
type Error = Error;
|
|
|
|
fn visit<T>(&mut self) -> Result<Option<T>, Error>
|
|
where T: de::Deserialize,
|
|
{
|
|
match self.de.tokens.peek() {
|
|
Some(&Token::SeqSep) => {
|
|
self.de.tokens.next();
|
|
self.len -= 1;
|
|
Ok(Some(try!(de::Deserialize::deserialize(self.de))))
|
|
}
|
|
Some(&Token::SeqEnd) => Ok(None),
|
|
Some(_) => {
|
|
let token = self.de.tokens.next().unwrap();
|
|
Err(Error::UnexpectedToken(token))
|
|
}
|
|
None => Err(Error::EndOfStreamError),
|
|
}
|
|
}
|
|
|
|
fn end(&mut self) -> Result<(), Error> {
|
|
assert_eq!(self.len, 0);
|
|
match self.de.tokens.next() {
|
|
Some(Token::SeqEnd) => Ok(()),
|
|
Some(token) => Err(Error::UnexpectedToken(token)),
|
|
None => Err(Error::EndOfStreamError),
|
|
}
|
|
}
|
|
|
|
fn size_hint(&self) -> (usize, Option<usize>) {
|
|
(self.len, Some(self.len))
|
|
}
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////////
|
|
|
|
struct DeserializerTupleVisitor<'a, I: 'a> where I: Iterator<Item=Token<'static>> {
|
|
de: &'a mut Deserializer<I>,
|
|
len: usize,
|
|
}
|
|
|
|
impl<'a, I> de::SeqVisitor for DeserializerTupleVisitor<'a, I>
|
|
where I: Iterator<Item=Token<'static>>,
|
|
{
|
|
type Error = Error;
|
|
|
|
fn visit<T>(&mut self) -> Result<Option<T>, Error>
|
|
where T: de::Deserialize,
|
|
{
|
|
match self.de.tokens.peek() {
|
|
Some(&Token::TupleSep) => {
|
|
self.de.tokens.next();
|
|
self.len -= 1;
|
|
Ok(Some(try!(de::Deserialize::deserialize(self.de))))
|
|
}
|
|
Some(&Token::TupleEnd) => Ok(None),
|
|
Some(_) => {
|
|
let token = self.de.tokens.next().unwrap();
|
|
Err(Error::UnexpectedToken(token))
|
|
}
|
|
None => Err(Error::EndOfStreamError),
|
|
}
|
|
}
|
|
|
|
fn end(&mut self) -> Result<(), Error> {
|
|
assert_eq!(self.len, 0);
|
|
match self.de.tokens.next() {
|
|
Some(Token::TupleEnd) => Ok(()),
|
|
Some(token) => Err(Error::UnexpectedToken(token)),
|
|
None => Err(Error::EndOfStreamError),
|
|
}
|
|
}
|
|
|
|
fn size_hint(&self) -> (usize, Option<usize>) {
|
|
(self.len, Some(self.len))
|
|
}
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////////
|
|
|
|
struct DeserializerTupleStructVisitor<'a, I: 'a> where I: Iterator<Item=Token<'static>> {
|
|
de: &'a mut Deserializer<I>,
|
|
len: usize,
|
|
}
|
|
|
|
impl<'a, I> de::SeqVisitor for DeserializerTupleStructVisitor<'a, I>
|
|
where I: Iterator<Item=Token<'static>>,
|
|
{
|
|
type Error = Error;
|
|
|
|
fn visit<T>(&mut self) -> Result<Option<T>, Error>
|
|
where T: de::Deserialize,
|
|
{
|
|
match self.de.tokens.peek() {
|
|
Some(&Token::TupleStructSep) => {
|
|
self.de.tokens.next();
|
|
self.len -= 1;
|
|
Ok(Some(try!(de::Deserialize::deserialize(self.de))))
|
|
}
|
|
Some(&Token::TupleStructEnd) => Ok(None),
|
|
Some(_) => {
|
|
let token = self.de.tokens.next().unwrap();
|
|
Err(Error::UnexpectedToken(token))
|
|
}
|
|
None => Err(Error::EndOfStreamError),
|
|
}
|
|
}
|
|
|
|
fn end(&mut self) -> Result<(), Error> {
|
|
assert_eq!(self.len, 0);
|
|
match self.de.tokens.next() {
|
|
Some(Token::TupleStructEnd) => Ok(()),
|
|
Some(token) => Err(Error::UnexpectedToken(token)),
|
|
None => Err(Error::EndOfStreamError),
|
|
}
|
|
}
|
|
|
|
fn size_hint(&self) -> (usize, Option<usize>) {
|
|
(self.len, Some(self.len))
|
|
}
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////////
|
|
|
|
struct DeserializerVariantSeqVisitor<'a, I: 'a> where I: Iterator<Item=Token<'static>> {
|
|
de: &'a mut Deserializer<I>,
|
|
len: Option<usize>,
|
|
}
|
|
|
|
impl<'a, I> de::SeqVisitor for DeserializerVariantSeqVisitor<'a, I>
|
|
where I: Iterator<Item=Token<'static>>,
|
|
{
|
|
type Error = Error;
|
|
|
|
fn visit<T>(&mut self) -> Result<Option<T>, Error>
|
|
where T: de::Deserialize,
|
|
{
|
|
match self.de.tokens.peek() {
|
|
Some(&Token::EnumSeqSep) => {
|
|
self.de.tokens.next();
|
|
self.len = self.len.map(|len| len - 1);
|
|
Ok(Some(try!(de::Deserialize::deserialize(self.de))))
|
|
}
|
|
Some(&Token::EnumSeqEnd) => Ok(None),
|
|
Some(_) => {
|
|
let token = self.de.tokens.next().unwrap();
|
|
Err(Error::UnexpectedToken(token))
|
|
}
|
|
None => Err(Error::EndOfStreamError),
|
|
}
|
|
}
|
|
|
|
fn end(&mut self) -> Result<(), Error> {
|
|
//assert_eq!(self.len.unwrap_or(0), 0);
|
|
match self.de.tokens.next() {
|
|
Some(Token::EnumSeqEnd) => Ok(()),
|
|
Some(token) => Err(Error::UnexpectedToken(token)),
|
|
None => Err(Error::EndOfStreamError),
|
|
}
|
|
}
|
|
|
|
fn size_hint(&self) -> (usize, Option<usize>) {
|
|
let len = self.len.unwrap_or(0);
|
|
(len, self.len)
|
|
}
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////////
|
|
|
|
struct DeserializerMapVisitor<'a, I: 'a> where I: Iterator<Item=Token<'static>> {
|
|
de: &'a mut Deserializer<I>,
|
|
len: Option<usize>,
|
|
}
|
|
|
|
impl<'a, I> de::MapVisitor for DeserializerMapVisitor<'a, I>
|
|
where I: Iterator<Item=Token<'static>>,
|
|
{
|
|
type Error = Error;
|
|
|
|
fn visit_key<K>(&mut self) -> Result<Option<K>, Error>
|
|
where K: de::Deserialize,
|
|
{
|
|
match self.de.tokens.peek() {
|
|
Some(&Token::MapSep) => {
|
|
self.de.tokens.next();
|
|
self.len = self.len.map(|len| if len > 0 { len - 1} else { 0 });
|
|
Ok(Some(try!(de::Deserialize::deserialize(self.de))))
|
|
}
|
|
Some(&Token::MapEnd) => Ok(None),
|
|
Some(_) => {
|
|
let token = self.de.tokens.next().unwrap();
|
|
Err(Error::UnexpectedToken(token))
|
|
}
|
|
None => Err(Error::EndOfStreamError),
|
|
}
|
|
}
|
|
|
|
fn visit_value<V>(&mut self) -> Result<V, Error>
|
|
where V: de::Deserialize,
|
|
{
|
|
Ok(try!(de::Deserialize::deserialize(self.de)))
|
|
}
|
|
|
|
fn end(&mut self) -> Result<(), Error> {
|
|
//assert_eq!(self.len.unwrap_or(0), 0);
|
|
match self.de.tokens.next() {
|
|
Some(Token::MapEnd) => Ok(()),
|
|
Some(token) => Err(Error::UnexpectedToken(token)),
|
|
None => Err(Error::EndOfStreamError),
|
|
}
|
|
}
|
|
|
|
fn size_hint(&self) -> (usize, Option<usize>) {
|
|
let len = self.len.unwrap_or(0);
|
|
(len, self.len)
|
|
}
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////////
|
|
|
|
struct DeserializerStructVisitor<'a, I: 'a> where I: Iterator<Item=Token<'static>> {
|
|
de: &'a mut Deserializer<I>,
|
|
len: Option<usize>,
|
|
}
|
|
|
|
impl<'a, I> de::MapVisitor for DeserializerStructVisitor<'a, I>
|
|
where I: Iterator<Item=Token<'static>>,
|
|
{
|
|
type Error = Error;
|
|
|
|
fn visit_key<K>(&mut self) -> Result<Option<K>, Error>
|
|
where K: de::Deserialize,
|
|
{
|
|
match self.de.tokens.peek() {
|
|
Some(&Token::StructSep) => {
|
|
self.de.tokens.next();
|
|
self.len = self.len.map(|len| if len > 0 { len - 1} else { 0 });
|
|
Ok(Some(try!(de::Deserialize::deserialize(self.de))))
|
|
}
|
|
Some(&Token::StructEnd) => Ok(None),
|
|
Some(_) => {
|
|
let token = self.de.tokens.next().unwrap();
|
|
Err(Error::UnexpectedToken(token))
|
|
}
|
|
None => Err(Error::EndOfStreamError),
|
|
}
|
|
}
|
|
|
|
fn visit_value<V>(&mut self) -> Result<V, Error>
|
|
where V: de::Deserialize,
|
|
{
|
|
Ok(try!(de::Deserialize::deserialize(self.de)))
|
|
}
|
|
|
|
fn end(&mut self) -> Result<(), Error> {
|
|
//assert_eq!(self.len.unwrap_or(0), 0);
|
|
match self.de.tokens.next() {
|
|
Some(Token::StructEnd) => Ok(()),
|
|
Some(token) => Err(Error::UnexpectedToken(token)),
|
|
None => Err(Error::EndOfStreamError),
|
|
}
|
|
}
|
|
|
|
fn size_hint(&self) -> (usize, Option<usize>) {
|
|
let len = self.len.unwrap_or(0);
|
|
(len, self.len)
|
|
}
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////////
|
|
|
|
struct DeserializerVariantVisitor<'a, I: 'a> where I: Iterator<Item=Token<'static>> {
|
|
de: &'a mut Deserializer<I>,
|
|
}
|
|
|
|
impl<'a, I> de::VariantVisitor for DeserializerVariantVisitor<'a, I>
|
|
where I: Iterator<Item=Token<'static>>,
|
|
{
|
|
type Error = Error;
|
|
|
|
fn visit_variant<V>(&mut self) -> Result<V, Error>
|
|
where V: de::Deserialize,
|
|
{
|
|
match self.de.tokens.peek() {
|
|
Some(&Token::EnumUnit(_, v))
|
|
| Some(&Token::EnumNewType(_, v))
|
|
| Some(&Token::EnumSeqStart(_, v, _))
|
|
| Some(&Token::EnumMapStart(_, v, _)) => {
|
|
let mut de = ValueDeserializer::<Error>::into_deserializer(v);
|
|
let value = try!(de::Deserialize::deserialize(&mut de));
|
|
Ok(value)
|
|
}
|
|
Some(_) => {
|
|
de::Deserialize::deserialize(self.de)
|
|
}
|
|
None => Err(Error::EndOfStreamError),
|
|
}
|
|
}
|
|
|
|
fn visit_unit(&mut self) -> Result<(), Error> {
|
|
match self.de.tokens.peek() {
|
|
Some(&Token::EnumUnit(_, _)) => {
|
|
self.de.tokens.next();
|
|
Ok(())
|
|
}
|
|
Some(_) => {
|
|
de::Deserialize::deserialize(self.de)
|
|
}
|
|
None => Err(Error::EndOfStreamError),
|
|
}
|
|
}
|
|
|
|
fn visit_newtype<T>(&mut self) -> Result<T, Self::Error>
|
|
where T: de::Deserialize,
|
|
{
|
|
match self.de.tokens.peek() {
|
|
Some(&Token::EnumNewType(_, _)) => {
|
|
self.de.tokens.next();
|
|
de::Deserialize::deserialize(self.de)
|
|
}
|
|
Some(_) => {
|
|
de::Deserialize::deserialize(self.de)
|
|
}
|
|
None => Err(Error::EndOfStreamError),
|
|
}
|
|
}
|
|
|
|
fn visit_tuple<V>(&mut self,
|
|
len: usize,
|
|
visitor: V) -> Result<V::Value, Error>
|
|
where V: de::Visitor,
|
|
{
|
|
match self.de.tokens.peek() {
|
|
Some(&Token::EnumSeqStart(_, _, Some(enum_len))) => {
|
|
let token = self.de.tokens.next().unwrap();
|
|
|
|
if len == enum_len {
|
|
self.de.visit_variant_seq(Some(len), visitor)
|
|
} else {
|
|
Err(Error::UnexpectedToken(token))
|
|
}
|
|
}
|
|
Some(&Token::SeqStart(Some(enum_len))) => {
|
|
let token = self.de.tokens.next().unwrap();
|
|
|
|
if len == enum_len {
|
|
self.de.visit_seq(Some(len), visitor)
|
|
} else {
|
|
Err(Error::UnexpectedToken(token))
|
|
}
|
|
}
|
|
Some(_) => {
|
|
de::Deserialize::deserialize(self.de)
|
|
}
|
|
None => Err(Error::EndOfStreamError),
|
|
}
|
|
}
|
|
|
|
fn visit_struct<V>(&mut self,
|
|
fields: &'static [&'static str],
|
|
visitor: V) -> Result<V::Value, Error>
|
|
where V: de::Visitor,
|
|
{
|
|
match self.de.tokens.peek() {
|
|
Some(&Token::EnumMapStart(_, _, Some(enum_len))) => {
|
|
let token = self.de.tokens.next().unwrap();
|
|
|
|
if fields.len() == enum_len {
|
|
self.de.visit_variant_map(Some(fields.len()), visitor)
|
|
} else {
|
|
Err(Error::UnexpectedToken(token))
|
|
}
|
|
}
|
|
Some(&Token::MapStart(Some(enum_len))) => {
|
|
let token = self.de.tokens.next().unwrap();
|
|
|
|
if fields.len() == enum_len {
|
|
self.de.visit_map(Some(fields.len()), visitor)
|
|
} else {
|
|
Err(Error::UnexpectedToken(token))
|
|
}
|
|
}
|
|
Some(_) => {
|
|
de::Deserialize::deserialize(self.de)
|
|
}
|
|
None => Err(Error::EndOfStreamError),
|
|
}
|
|
}
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////////
|
|
|
|
struct DeserializerVariantMapVisitor<'a, I: 'a> where I: Iterator<Item=Token<'static>> {
|
|
de: &'a mut Deserializer<I>,
|
|
len: Option<usize>,
|
|
}
|
|
|
|
impl<'a, I> de::MapVisitor for DeserializerVariantMapVisitor<'a, I>
|
|
where I: Iterator<Item=Token<'static>>,
|
|
{
|
|
type Error = Error;
|
|
|
|
fn visit_key<K>(&mut self) -> Result<Option<K>, Error>
|
|
where K: de::Deserialize,
|
|
{
|
|
match self.de.tokens.peek() {
|
|
Some(&Token::EnumMapSep) => {
|
|
self.de.tokens.next();
|
|
self.len = self.len.map(|len| if len > 0 { len - 1} else { 0 });
|
|
Ok(Some(try!(de::Deserialize::deserialize(self.de))))
|
|
}
|
|
Some(&Token::EnumMapEnd) => Ok(None),
|
|
Some(_) => {
|
|
let token = self.de.tokens.next().unwrap();
|
|
Err(Error::UnexpectedToken(token))
|
|
}
|
|
None => Err(Error::EndOfStreamError),
|
|
}
|
|
}
|
|
|
|
fn visit_value<V>(&mut self) -> Result<V, Error>
|
|
where V: de::Deserialize,
|
|
{
|
|
Ok(try!(de::Deserialize::deserialize(self.de)))
|
|
}
|
|
|
|
fn end(&mut self) -> Result<(), Error> {
|
|
//assert_eq!(self.len.unwrap_or(0), 0);
|
|
match self.de.tokens.next() {
|
|
Some(Token::EnumMapEnd) => Ok(()),
|
|
Some(token) => Err(Error::UnexpectedToken(token)),
|
|
None => Err(Error::EndOfStreamError),
|
|
}
|
|
}
|
|
|
|
fn size_hint(&self) -> (usize, Option<usize>) {
|
|
let len = self.len.unwrap_or(0);
|
|
(len, self.len)
|
|
}
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
|
|
pub fn assert_ser_tokens<T>(value: &T, tokens: &[Token])
|
|
where T: ser::Serialize,
|
|
{
|
|
let mut ser = Serializer::new(tokens.iter());
|
|
assert_eq!(ser::Serialize::serialize(value, &mut ser), Ok(()));
|
|
assert_eq!(ser.tokens.next(), None);
|
|
}
|
|
|
|
// Expect an error deserializing tokens into a T
|
|
pub fn assert_ser_tokens_error<T>(value: &T, tokens: &[Token], error: Error)
|
|
where T: ser::Serialize + PartialEq + fmt::Debug,
|
|
{
|
|
let mut ser = Serializer::new(tokens.iter());
|
|
let v: Result<(), Error> = ser::Serialize::serialize(value, &mut ser);
|
|
assert_eq!(v.as_ref(), Err(&error));
|
|
}
|
|
|
|
pub fn assert_de_tokens<T>(value: &T, tokens: Vec<Token<'static>>)
|
|
where T: de::Deserialize + PartialEq + fmt::Debug,
|
|
{
|
|
let mut de = Deserializer::new(tokens.into_iter());
|
|
let v: Result<T, Error> = de::Deserialize::deserialize(&mut de);
|
|
assert_eq!(v.as_ref(), Ok(value));
|
|
assert_eq!(de.tokens.next(), None);
|
|
}
|
|
|
|
// Expect an error deserializing tokens into a T
|
|
pub fn assert_de_tokens_error<T>(tokens: Vec<Token<'static>>, error: Error)
|
|
where T: de::Deserialize + PartialEq + fmt::Debug,
|
|
{
|
|
let mut de = Deserializer::new(tokens.into_iter());
|
|
let v: Result<T, Error> = de::Deserialize::deserialize(&mut de);
|
|
assert_eq!(v, Err(error));
|
|
}
|
|
|
|
// Tests that the given token stream is ignorable when embedded in
|
|
// an otherwise normal struct
|
|
pub fn assert_de_tokens_ignore(ignorable_tokens: Vec<Token<'static>>) {
|
|
#[derive(PartialEq, Debug, Deserialize)]
|
|
struct IgnoreBase {
|
|
a: i32,
|
|
}
|
|
|
|
let expected = IgnoreBase{a: 1};
|
|
|
|
// Embed the tokens to be ignored in the normal token
|
|
// stream for an IgnoreBase type
|
|
let concated_tokens : Vec<Token<'static>> = vec![
|
|
Token::MapStart(Some(2)),
|
|
Token::MapSep,
|
|
Token::Str("a"),
|
|
Token::I32(1),
|
|
|
|
Token::MapSep,
|
|
Token::Str("ignored")
|
|
]
|
|
.into_iter()
|
|
.chain(ignorable_tokens.into_iter())
|
|
.chain(vec![
|
|
Token::MapEnd,
|
|
].into_iter())
|
|
.collect();
|
|
|
|
let mut de = Deserializer::new(concated_tokens.into_iter());
|
|
let v: Result<IgnoreBase, Error> = de::Deserialize::deserialize(&mut de);
|
|
|
|
// We run this test on every token stream for convenience, but
|
|
// some token streams don't make sense embedded as a map value,
|
|
// so we ignore those. SyntaxError is the real sign of trouble.
|
|
if let Err(Error::UnexpectedToken(_)) = v {
|
|
return;
|
|
}
|
|
|
|
assert_eq!(v.as_ref(), Ok(&expected));
|
|
assert_eq!(de.tokens.next(), None);
|
|
}
|
|
|
|
pub fn assert_tokens<T>(value: &T, tokens: Vec<Token<'static>>)
|
|
where T: ser::Serialize + de::Deserialize + PartialEq + fmt::Debug,
|
|
{
|
|
assert_ser_tokens(value, &tokens[..]);
|
|
assert_de_tokens(value, tokens);
|
|
}
|