529 lines
13 KiB
Rust
529 lines
13 KiB
Rust
#![feature(custom_derive, plugin, test)]
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#![plugin(serde_macros)]
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extern crate test;
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extern crate serde;
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use std::vec;
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use std::collections::BTreeMap;
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use serde::ser::{Serialize, Serializer, SeqVisitor, MapVisitor};
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#[derive(Clone, PartialEq, Debug)]
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pub enum Token<'a> {
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Bool(bool),
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Isize(isize),
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I8(i8),
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I16(i16),
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I32(i32),
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I64(i64),
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Usize(usize),
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U8(u8),
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U16(u16),
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U32(u32),
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U64(u64),
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F32(f32),
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F64(f64),
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Char(char),
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Str(&'a str),
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Option(bool),
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Unit,
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NamedUnit(&'a str),
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EnumUnit(&'a str, &'a str),
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SeqStart(Option<usize>),
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NamedSeqStart(&'a str, Option<usize>),
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EnumSeqStart(&'a str, &'a str, Option<usize>),
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SeqSep,
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SeqEnd,
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MapStart(Option<usize>),
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NamedMapStart(&'a str, Option<usize>),
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EnumMapStart(&'a str, &'a str, Option<usize>),
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MapSep,
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MapEnd,
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}
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struct AssertSerializer<'a> {
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iter: vec::IntoIter<Token<'a>>,
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}
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impl<'a> AssertSerializer<'a> {
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fn new(values: Vec<Token<'a>>) -> AssertSerializer {
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AssertSerializer {
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iter: values.into_iter(),
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}
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}
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fn visit_sequence<V>(&mut self, mut visitor: V) -> Result<(), ()>
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where V: SeqVisitor
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{
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while let Some(()) = try!(visitor.visit(self)) { }
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assert_eq!(self.iter.next(), Some(Token::SeqEnd));
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Ok(())
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}
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fn visit_mapping<V>(&mut self, mut visitor: V) -> Result<(), ()>
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where V: MapVisitor
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{
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while let Some(()) = try!(visitor.visit(self)) { }
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assert_eq!(self.iter.next(), Some(Token::MapEnd));
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Ok(())
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}
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}
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impl<'a> Serializer for AssertSerializer<'a> {
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type Error = ();
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fn visit_unit(&mut self) -> Result<(), ()> {
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assert_eq!(self.iter.next(), Some(Token::Unit));
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Ok(())
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}
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fn visit_named_unit(&mut self, name: &str) -> Result<(), ()> {
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assert_eq!(self.iter.next().unwrap(), Token::NamedUnit(name));
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Ok(())
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}
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fn visit_enum_unit(&mut self, name: &str, variant: &str) -> Result<(), ()> {
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assert_eq!(self.iter.next().unwrap(), Token::EnumUnit(name, variant));
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Ok(())
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}
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fn visit_bool(&mut self, v: bool) -> Result<(), ()> {
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assert_eq!(self.iter.next(), Some(Token::Bool(v)));
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Ok(())
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}
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fn visit_isize(&mut self, v: isize) -> Result<(), ()> {
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assert_eq!(self.iter.next(), Some(Token::Isize(v)));
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Ok(())
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}
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fn visit_i8(&mut self, v: i8) -> Result<(), ()> {
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assert_eq!(self.iter.next(), Some(Token::I8(v)));
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Ok(())
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}
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fn visit_i16(&mut self, v: i16) -> Result<(), ()> {
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assert_eq!(self.iter.next(), Some(Token::I16(v)));
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Ok(())
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}
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fn visit_i32(&mut self, v: i32) -> Result<(), ()> {
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assert_eq!(self.iter.next(), Some(Token::I32(v)));
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Ok(())
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}
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fn visit_i64(&mut self, v: i64) -> Result<(), ()> {
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assert_eq!(self.iter.next(), Some(Token::I64(v)));
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Ok(())
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}
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fn visit_usize(&mut self, v: usize) -> Result<(), ()> {
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assert_eq!(self.iter.next(), Some(Token::Usize(v)));
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Ok(())
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}
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fn visit_u8(&mut self, v: u8) -> Result<(), ()> {
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assert_eq!(self.iter.next(), Some(Token::U8(v)));
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Ok(())
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}
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fn visit_u16(&mut self, v: u16) -> Result<(), ()> {
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assert_eq!(self.iter.next(), Some(Token::U16(v)));
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Ok(())
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}
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fn visit_u32(&mut self, v: u32) -> Result<(), ()> {
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assert_eq!(self.iter.next(), Some(Token::U32(v)));
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Ok(())
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}
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fn visit_u64(&mut self, v: u64) -> Result<(), ()> {
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assert_eq!(self.iter.next(), Some(Token::U64(v)));
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Ok(())
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}
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fn visit_f32(&mut self, v: f32) -> Result<(), ()> {
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assert_eq!(self.iter.next(), Some(Token::F32(v)));
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Ok(())
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}
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fn visit_f64(&mut self, v: f64) -> Result<(), ()> {
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assert_eq!(self.iter.next(), Some(Token::F64(v)));
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Ok(())
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}
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fn visit_char(&mut self, v: char) -> Result<(), ()> {
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assert_eq!(self.iter.next(), Some(Token::Char(v)));
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Ok(())
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}
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fn visit_str(&mut self, v: &str) -> Result<(), ()> {
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assert_eq!(self.iter.next().unwrap(), Token::Str(v));
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Ok(())
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}
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fn visit_none(&mut self) -> Result<(), ()> {
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assert_eq!(self.iter.next(), Some(Token::Option(false)));
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Ok(())
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}
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fn visit_some<V>(&mut self, value: V) -> Result<(), ()>
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where V: Serialize,
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{
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assert_eq!(self.iter.next(), Some(Token::Option(true)));
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value.serialize(self)
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}
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fn visit_seq<V>(&mut self, visitor: V) -> Result<(), ()>
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where V: SeqVisitor
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{
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let len = visitor.len();
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assert_eq!(self.iter.next(), Some(Token::SeqStart(len)));
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self.visit_sequence(visitor)
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}
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fn visit_named_seq<V>(&mut self, name: &str, visitor: V) -> Result<(), ()>
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where V: SeqVisitor
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{
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let len = visitor.len();
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assert_eq!(self.iter.next().unwrap(), Token::NamedSeqStart(name, len));
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self.visit_sequence(visitor)
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}
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fn visit_enum_seq<V>(&mut self,
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name: &str,
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variant: &str,
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visitor: V) -> Result<(), ()>
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where V: SeqVisitor
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{
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let len = visitor.len();
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assert_eq!(self.iter.next().unwrap(), Token::EnumSeqStart(name, variant, len));
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self.visit_sequence(visitor)
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}
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fn visit_seq_elt<T>(&mut self, value: T) -> Result<(), ()>
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where T: Serialize
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{
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assert_eq!(self.iter.next(), Some(Token::SeqSep));
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value.serialize(self)
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}
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fn visit_map<V>(&mut self, visitor: V) -> Result<(), ()>
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where V: MapVisitor
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{
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let len = visitor.len();
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assert_eq!(self.iter.next(), Some(Token::MapStart(len)));
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self.visit_mapping(visitor)
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}
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fn visit_named_map<V>(&mut self, name: &str, visitor: V) -> Result<(), ()>
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where V: MapVisitor
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{
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let len = visitor.len();
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assert_eq!(self.iter.next().unwrap(), Token::NamedMapStart(name, len));
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self.visit_mapping(visitor)
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}
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fn visit_enum_map<V>(&mut self, name: &str, variant: &str, visitor: V) -> Result<(), ()>
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where V: MapVisitor
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{
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let len = visitor.len();
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assert_eq!(self.iter.next().unwrap(), Token::EnumMapStart(name, variant, len));
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self.visit_mapping(visitor)
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}
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fn visit_map_elt<K, V>(&mut self, key: K, value: V) -> Result<(), ()>
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where K: Serialize,
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V: Serialize,
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{
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assert_eq!(self.iter.next(), Some(Token::MapSep));
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try!(key.serialize(self));
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value.serialize(self)
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}
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}
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//////////////////////////////////////////////////////////////////////////
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#[derive(Serialize)]
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struct NamedUnit;
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#[derive(Serialize)]
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struct NamedSeq(i32, i32, i32);
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#[derive(Serialize)]
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struct NamedMap {
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a: i32,
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b: i32,
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c: i32,
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}
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#[derive(Serialize)]
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enum Enum {
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Unit,
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Seq(i32, i32),
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Map { a: i32, b: i32 },
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}
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//////////////////////////////////////////////////////////////////////////
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macro_rules! btreemap {
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() => {
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BTreeMap::new()
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};
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($($key:expr => $value:expr),+) => {
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{
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let mut map = BTreeMap::new();
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$(map.insert($key, $value);)+
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map
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}
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}
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}
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macro_rules! declare_test {
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($name:ident { $($value:expr => $tokens:expr,)+ }) => {
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#[test]
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fn $name() {
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$(
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let mut ser = AssertSerializer::new($tokens);
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assert_eq!($value.serialize(&mut ser), Ok(()));
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)+
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}
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}
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}
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macro_rules! declare_tests {
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($($name:ident { $($value:expr => $tokens:expr,)+ })+) => {
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$(
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declare_test!($name { $($value => $tokens,)+ });
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)+
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}
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}
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declare_tests! {
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test_unit {
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() => vec![Token::Unit],
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}
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test_bool {
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true => vec![Token::Bool(true)],
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false => vec![Token::Bool(false)],
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}
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test_isizes {
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0isize => vec![Token::Isize(0)],
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0i8 => vec![Token::I8(0)],
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0i16 => vec![Token::I16(0)],
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0i32 => vec![Token::I32(0)],
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0i64 => vec![Token::I64(0)],
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}
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test_usizes {
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0usize => vec![Token::Usize(0)],
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0u8 => vec![Token::U8(0)],
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0u16 => vec![Token::U16(0)],
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0u32 => vec![Token::U32(0)],
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0u64 => vec![Token::U64(0)],
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}
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test_floats {
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0f32 => vec![Token::F32(0.)],
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0f64 => vec![Token::F64(0.)],
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}
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test_char {
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'a' => vec![Token::Char('a')],
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}
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test_str {
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"abc" => vec![Token::Str("abc")],
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"abc".to_string() => vec![Token::Str("abc")],
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}
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test_option {
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None::<i32> => vec![Token::Option(false)],
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Some(1) => vec![
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Token::Option(true),
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Token::I32(1),
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],
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}
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test_slice {
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&[0][..0] => vec![
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Token::SeqStart(Some(0)),
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Token::SeqEnd,
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],
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&[1, 2, 3][..] => vec![
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Token::SeqStart(Some(3)),
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Token::SeqSep,
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Token::I32(1),
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Token::SeqSep,
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Token::I32(2),
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Token::SeqSep,
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Token::I32(3),
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Token::SeqEnd,
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],
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}
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test_vec {
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Vec::<isize>::new() => vec![
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Token::SeqStart(Some(0)),
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Token::SeqEnd,
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],
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vec![vec![], vec![1], vec![2, 3]] => vec![
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Token::SeqStart(Some(3)),
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Token::SeqSep,
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Token::SeqStart(Some(0)),
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Token::SeqEnd,
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Token::SeqSep,
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Token::SeqStart(Some(1)),
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Token::SeqSep,
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Token::I32(1),
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Token::SeqEnd,
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Token::SeqSep,
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Token::SeqStart(Some(2)),
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Token::SeqSep,
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Token::I32(2),
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Token::SeqSep,
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Token::I32(3),
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Token::SeqEnd,
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Token::SeqEnd,
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],
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}
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test_tuple {
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(1,) => vec![
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Token::SeqStart(Some(1)),
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Token::SeqSep,
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Token::I32(1),
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Token::SeqEnd,
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],
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(1, 2, 3) => vec![
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Token::SeqStart(Some(3)),
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Token::SeqSep,
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Token::I32(1),
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Token::SeqSep,
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Token::I32(2),
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Token::SeqSep,
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Token::I32(3),
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Token::SeqEnd,
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],
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}
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test_btreemap {
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btreemap![1 => 2] => vec![
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Token::MapStart(Some(1)),
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Token::MapSep,
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Token::I32(1),
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Token::I32(2),
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Token::MapEnd,
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],
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btreemap![1 => 2, 3 => 4] => vec![
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Token::MapStart(Some(2)),
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Token::MapSep,
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Token::I32(1),
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Token::I32(2),
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Token::MapSep,
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Token::I32(3),
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Token::I32(4),
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Token::MapEnd,
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],
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btreemap![1 => btreemap![], 2 => btreemap![3 => 4, 5 => 6]] => vec![
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Token::MapStart(Some(2)),
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Token::MapSep,
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Token::I32(1),
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Token::MapStart(Some(0)),
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Token::MapEnd,
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Token::MapSep,
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Token::I32(2),
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Token::MapStart(Some(2)),
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Token::MapSep,
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Token::I32(3),
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Token::I32(4),
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Token::MapSep,
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Token::I32(5),
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Token::I32(6),
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Token::MapEnd,
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Token::MapEnd,
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],
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}
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test_named_unit {
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NamedUnit => vec![Token::NamedUnit("NamedUnit")],
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}
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test_named_seq {
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NamedSeq(1, 2, 3) => vec![
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Token::NamedSeqStart("NamedSeq", Some(3)),
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Token::SeqSep,
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Token::I32(1),
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Token::SeqSep,
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Token::I32(2),
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Token::SeqSep,
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Token::I32(3),
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Token::SeqEnd,
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],
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}
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test_named_map {
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NamedMap { a: 1, b: 2, c: 3 } => vec![
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Token::NamedMapStart("NamedMap", Some(3)),
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Token::MapSep,
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Token::Str("a"),
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Token::I32(1),
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Token::MapSep,
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Token::Str("b"),
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Token::I32(2),
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Token::MapSep,
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Token::Str("c"),
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Token::I32(3),
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Token::MapEnd,
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],
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}
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test_enum {
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Enum::Unit => vec![Token::EnumUnit("Enum", "Unit")],
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Enum::Seq(1, 2) => vec![
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Token::EnumSeqStart("Enum", "Seq", Some(2)),
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Token::SeqSep,
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Token::I32(1),
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Token::SeqSep,
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Token::I32(2),
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Token::SeqEnd,
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],
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Enum::Map { a: 1, b: 2 } => vec![
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Token::EnumMapStart("Enum", "Map", Some(2)),
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Token::MapSep,
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Token::Str("a"),
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Token::I32(1),
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Token::MapSep,
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Token::Str("b"),
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Token::I32(2),
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Token::MapEnd,
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],
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}
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}
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