de89f95f31
This allows end users to use an arbitrary expression to decide whether
or not to serialize some field. This expression has access to all the
fields in the struct, but none of the internal state of the Serialize
implementation. For structs, serde implements this by creating a
temporary trait and implementing the struct for it. For struct variants,
the fields are copied by reference into a temporary struct first
before implementing the temporary trait.
This also fixes a bug where the serde_codegen wasn't making calls to
Serializer::serialize_{tuple,struct}_variant{,_elt}.
328 lines
8.2 KiB
Rust
328 lines
8.2 KiB
Rust
use std::collections::BTreeMap;
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use std::path::{Path, PathBuf};
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use std::str;
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use num::FromPrimitive;
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use num::bigint::{BigInt, BigUint};
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use num::complex::Complex;
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use num::rational::Ratio;
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use token::{self, Token};
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//////////////////////////////////////////////////////////////////////////
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#[derive(Serialize)]
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struct UnitStruct;
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#[derive(Serialize)]
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struct TupleStruct(i32, i32, i32);
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#[derive(Serialize)]
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struct Struct {
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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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One(i32),
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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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declare_ser_tests! {
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test_unit {
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() => &[Token::Unit],
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}
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test_bool {
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true => &[Token::Bool(true)],
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false => &[Token::Bool(false)],
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}
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test_isizes {
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0isize => &[Token::Isize(0)],
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0i8 => &[Token::I8(0)],
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0i16 => &[Token::I16(0)],
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0i32 => &[Token::I32(0)],
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0i64 => &[Token::I64(0)],
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}
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test_usizes {
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0usize => &[Token::Usize(0)],
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0u8 => &[Token::U8(0)],
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0u16 => &[Token::U16(0)],
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0u32 => &[Token::U32(0)],
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0u64 => &[Token::U64(0)],
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}
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test_floats {
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0f32 => &[Token::F32(0.)],
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0f64 => &[Token::F64(0.)],
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}
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test_char {
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'a' => &[Token::Char('a')],
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}
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test_str {
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"abc" => &[Token::Str("abc")],
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"abc".to_owned() => &[Token::Str("abc")],
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}
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test_option {
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None::<i32> => &[Token::Option(false)],
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Some(1) => &[
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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_result {
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Ok::<i32, i32>(0) => &[
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Token::EnumNewType("Result", "Ok"),
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Token::I32(0),
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],
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Err::<i32, i32>(1) => &[
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Token::EnumNewType("Result", "Err"),
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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] => &[
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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][..] => &[
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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_array {
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[0; 0] => &[
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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] => &[
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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() => &[
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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]] => &[
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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,) => &[
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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) => &[
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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] => &[
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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] => &[
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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]] => &[
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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_unit_struct {
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UnitStruct => &[Token::UnitStruct("UnitStruct")],
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}
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test_tuple_struct {
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TupleStruct(1, 2, 3) => &[
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Token::TupleStructStart("TupleStruct", Some(3)),
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Token::TupleSeqSep,
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Token::I32(1),
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Token::TupleSeqSep,
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Token::I32(2),
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Token::TupleSeqSep,
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Token::I32(3),
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Token::TupleSeqEnd,
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],
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}
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test_struct {
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Struct { a: 1, b: 2, c: 3 } => &[
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Token::StructStart("Struct", Some(3)),
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Token::StructSep,
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Token::Str("a"),
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Token::I32(1),
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Token::StructSep,
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Token::Str("b"),
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Token::I32(2),
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Token::StructSep,
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Token::Str("c"),
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Token::I32(3),
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Token::StructEnd,
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],
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}
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test_enum {
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Enum::Unit => &[Token::EnumUnit("Enum", "Unit")],
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Enum::One(42) => &[Token::EnumNewType("Enum", "One"), Token::I32(42)],
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Enum::Seq(1, 2) => &[
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Token::EnumSeqStart("Enum", "Seq", Some(2)),
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Token::EnumSeqSep,
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Token::I32(1),
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Token::EnumSeqSep,
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Token::I32(2),
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Token::EnumSeqEnd,
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],
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Enum::Map { a: 1, b: 2 } => &[
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Token::EnumMapStart("Enum", "Map", Some(2)),
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Token::EnumMapSep,
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Token::Str("a"),
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Token::I32(1),
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Token::EnumMapSep,
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Token::Str("b"),
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Token::I32(2),
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Token::EnumMapEnd,
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],
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}
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test_num_bigint {
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BigInt::from_i64(123).unwrap() => &[Token::Str("123")],
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BigInt::from_i64(-123).unwrap() => &[Token::Str("-123")],
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}
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test_num_biguint {
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BigUint::from_i64(123).unwrap() => &[Token::Str("123")],
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}
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test_num_complex {
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Complex::new(1, 2) => &[
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Token::SeqStart(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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}
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test_num_ratio {
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Ratio::new(1, 2) => &[
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Token::SeqStart(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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}
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test_path {
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Path::new("/usr/local/lib") => &[
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Token::Str("/usr/local/lib"),
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],
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}
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test_path_buf {
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PathBuf::from("/usr/local/lib") => &[
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Token::Str("/usr/local/lib"),
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],
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}
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}
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#[test]
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fn test_cannot_serialize_paths() {
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let path = unsafe {
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str::from_utf8_unchecked(b"Hello \xF0\x90\x80World")
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};
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token::assert_ser_tokens_error(
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&Path::new(path),
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&[Token::Str("Hello <20>World")],
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token::Error::InvalidValue("Path contains invalid UTF-8 characters".to_owned()));
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let mut path_buf = PathBuf::new();
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path_buf.push(path);
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token::assert_ser_tokens_error(
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&path_buf,
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&[Token::Str("Hello <20>World")],
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token::Error::InvalidValue("Path contains invalid UTF-8 characters".to_owned()));
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}
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