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Merge pull request #1591 from dtolnay/up

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Update to syn/quote 1.0
This commit is contained in:
David Tolnay 2019-08-16 11:49:33 -07:00 committed by GitHub
commit 7dceee64fe
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GPG Key ID: 4AEE18F83AFDEB23
7 changed files with 160 additions and 142 deletions
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6
serde_derive/Cargo.toml
View File

@ -24,9 +24,9 @@ name = "serde_derive"
proc-macro = true
[dependencies]
proc-macro2 = "0.4"
quote = "0.6.3"
syn = { version = "0.15.22", features = ["visit"] }
proc-macro2 = "1.0"
quote = "1.0"
syn = { version = "1.0", features = ["visit"] }
[dev-dependencies]
serde = { version = "1.0", path = "../serde" }

4
serde_derive/src/bound.rs
View File

@ -115,7 +115,7 @@ pub fn with_bound(
impl<'ast> Visit<'ast> for FindTyParams<'ast> {
fn visit_field(&mut self, field: &'ast syn::Field) {
if let syn::Type::Path(ref ty) = field.ty {
if let Some(Pair::Punctuated(ref t, _)) = ty.path.segments.first() {
if let Some(Pair::Punctuated(ref t, _)) = ty.path.segments.pairs().next() {
if self.all_type_params.contains(&t.ident) {
self.associated_type_usage.push(ty);
}
@ -126,7 +126,7 @@ pub fn with_bound(
fn visit_path(&mut self, path: &'ast syn::Path) {
if let Some(seg) = path.segments.last() {
if seg.into_value().ident == "PhantomData" {
if seg.ident == "PhantomData" {
// Hardcoded exception, because PhantomData<T> implements
// Serialize and Deserialize whether or not T implements it.
return;

2
serde_derive/src/de.rs
View File

@ -145,7 +145,7 @@ impl Parameters {
/// Type name to use in error messages and `&'static str` arguments to
/// various Deserializer methods.
fn type_name(&self) -> String {
self.this.segments.last().unwrap().value().ident.to_string()
self.this.segments.last().unwrap().ident.to_string()
}
}

280
serde_derive/src/internals/attr.rs
View File

@ -9,8 +9,8 @@ use syn;
use syn::parse::{self, Parse, ParseStream};
use syn::punctuated::Punctuated;
use syn::Ident;
use syn::Meta::{List, NameValue, Word};
use syn::NestedMeta::{Literal, Meta};
use syn::Meta::{List, NameValue, Path};
use syn::NestedMeta::{Lit, Meta};
// This module handles parsing of `#[serde(...)]` attributes. The entrypoints
// are `attr::Container::from_ast`, `attr::Variant::from_ast`, and
@ -309,28 +309,28 @@ impl Container {
for meta_item in meta_items {
match meta_item {
// Parse `#[serde(rename = "foo")]`
Meta(NameValue(ref m)) if m.ident == RENAME => {
Meta(NameValue(ref m)) if m.path == RENAME => {
if let Ok(s) = get_lit_str(cx, RENAME, &m.lit) {
ser_name.set(&m.ident, s.value());
de_name.set(&m.ident, s.value());
ser_name.set(&m.path, s.value());
de_name.set(&m.path, s.value());
}
}
// Parse `#[serde(rename(serialize = "foo", deserialize = "bar"))]`
Meta(List(ref m)) if m.ident == RENAME => {
Meta(List(ref m)) if m.path == RENAME => {
if let Ok((ser, de)) = get_renames(cx, &m.nested) {
ser_name.set_opt(&m.ident, ser.map(syn::LitStr::value));
de_name.set_opt(&m.ident, de.map(syn::LitStr::value));
ser_name.set_opt(&m.path, ser.map(syn::LitStr::value));
de_name.set_opt(&m.path, de.map(syn::LitStr::value));
}
}
// Parse `#[serde(rename_all = "foo")]`
Meta(NameValue(ref m)) if m.ident == RENAME_ALL => {
Meta(NameValue(ref m)) if m.path == RENAME_ALL => {
if let Ok(s) = get_lit_str(cx, RENAME_ALL, &m.lit) {
match RenameRule::from_str(&s.value()) {
Ok(rename_rule) => {
rename_all_ser_rule.set(&m.ident, rename_rule);
rename_all_de_rule.set(&m.ident, rename_rule);
rename_all_ser_rule.set(&m.path, rename_rule);
rename_all_de_rule.set(&m.path, rename_rule);
}
Err(()) => cx.error_spanned_by(
s,
@ -345,12 +345,12 @@ impl Container {
}
// Parse `#[serde(rename_all(serialize = "foo", deserialize = "bar"))]`
Meta(List(ref m)) if m.ident == RENAME_ALL => {
Meta(List(ref m)) if m.path == RENAME_ALL => {
if let Ok((ser, de)) = get_renames(cx, &m.nested) {
if let Some(ser) = ser {
match RenameRule::from_str(&ser.value()) {
Ok(rename_rule) => {
rename_all_ser_rule.set(&m.ident, rename_rule)
rename_all_ser_rule.set(&m.path, rename_rule)
}
Err(()) => cx.error_spanned_by(
ser,
@ -364,9 +364,7 @@ impl Container {
}
if let Some(de) = de {
match RenameRule::from_str(&de.value()) {
Ok(rename_rule) => {
rename_all_de_rule.set(&m.ident, rename_rule)
}
Ok(rename_rule) => rename_all_de_rule.set(&m.path, rename_rule),
Err(()) => cx.error_spanned_by(
de,
format!(
@ -381,17 +379,17 @@ impl Container {
}
// Parse `#[serde(transparent)]`
Meta(Word(ref word)) if word == TRANSPARENT => {
Meta(Path(ref word)) if word == TRANSPARENT => {
transparent.set_true(word);
}
// Parse `#[serde(deny_unknown_fields)]`
Meta(Word(ref word)) if word == DENY_UNKNOWN_FIELDS => {
Meta(Path(ref word)) if word == DENY_UNKNOWN_FIELDS => {
deny_unknown_fields.set_true(word);
}
// Parse `#[serde(default)]`
Meta(Word(ref word)) if word == DEFAULT => match item.data {
Meta(Path(ref word)) if word == DEFAULT => match item.data {
syn::Data::Struct(syn::DataStruct { ref fields, .. }) => match *fields {
syn::Fields::Named(_) => {
default.set(word, Default::Default);
@ -418,13 +416,13 @@ impl Container {
},
// Parse `#[serde(default = "...")]`
Meta(NameValue(ref m)) if m.ident == DEFAULT => {
Meta(NameValue(ref m)) if m.path == DEFAULT => {
if let Ok(path) = parse_lit_into_expr_path(cx, DEFAULT, &m.lit) {
match item.data {
syn::Data::Struct(syn::DataStruct { ref fields, .. }) => {
match *fields {
syn::Fields::Named(_) => {
default.set(&m.ident, Default::Path(path));
default.set(&m.path, Default::Path(path));
}
syn::Fields::Unnamed(_) | syn::Fields::Unit => cx
.error_spanned_by(
@ -452,24 +450,24 @@ impl Container {
}
// Parse `#[serde(bound = "T: SomeBound")]`
Meta(NameValue(ref m)) if m.ident == BOUND => {
Meta(NameValue(ref m)) if m.path == BOUND => {
if let Ok(where_predicates) = parse_lit_into_where(cx, BOUND, BOUND, &m.lit)
{
ser_bound.set(&m.ident, where_predicates.clone());
de_bound.set(&m.ident, where_predicates);
ser_bound.set(&m.path, where_predicates.clone());
de_bound.set(&m.path, where_predicates);
}
}
// Parse `#[serde(bound(serialize = "...", deserialize = "..."))]`
Meta(List(ref m)) if m.ident == BOUND => {
Meta(List(ref m)) if m.path == BOUND => {
if let Ok((ser, de)) = get_where_predicates(cx, &m.nested) {
ser_bound.set_opt(&m.ident, ser);
de_bound.set_opt(&m.ident, de);
ser_bound.set_opt(&m.path, ser);
de_bound.set_opt(&m.path, de);
}
}
// Parse `#[serde(untagged)]`
Meta(Word(ref word)) if word == UNTAGGED => match item.data {
Meta(Path(ref word)) if word == UNTAGGED => match item.data {
syn::Data::Enum(_) => {
untagged.set_true(word);
}
@ -492,16 +490,16 @@ impl Container {
},
// Parse `#[serde(tag = "type")]`
Meta(NameValue(ref m)) if m.ident == TAG => {
Meta(NameValue(ref m)) if m.path == TAG => {
if let Ok(s) = get_lit_str(cx, TAG, &m.lit) {
match item.data {
syn::Data::Enum(_) => {
internal_tag.set(&m.ident, s.value());
internal_tag.set(&m.path, s.value());
}
syn::Data::Struct(syn::DataStruct { ref fields, .. }) => {
match *fields {
syn::Fields::Named(_) => {
internal_tag.set(&m.ident, s.value());
internal_tag.set(&m.path, s.value());
}
syn::Fields::Unnamed(_) | syn::Fields::Unit => {
cx.error_spanned_by(
@ -526,11 +524,11 @@ impl Container {
}
// Parse `#[serde(content = "c")]`
Meta(NameValue(ref m)) if m.ident == CONTENT => {
Meta(NameValue(ref m)) if m.path == CONTENT => {
if let Ok(s) = get_lit_str(cx, CONTENT, &m.lit) {
match item.data {
syn::Data::Enum(_) => {
content.set(&m.ident, s.value());
content.set(&m.path, s.value());
}
syn::Data::Struct(syn::DataStruct {
ref struct_token, ..
@ -553,62 +551,67 @@ impl Container {
}
// Parse `#[serde(from = "Type")]
Meta(NameValue(ref m)) if m.ident == FROM => {
Meta(NameValue(ref m)) if m.path == FROM => {
if let Ok(from_ty) = parse_lit_into_ty(cx, FROM, &m.lit) {
type_from.set_opt(&m.ident, Some(from_ty));
type_from.set_opt(&m.path, Some(from_ty));
}
}
// Parse `#[serde(try_from = "Type")]
Meta(NameValue(ref m)) if m.ident == TRY_FROM => {
Meta(NameValue(ref m)) if m.path == TRY_FROM => {
if let Ok(try_from_ty) = parse_lit_into_ty(cx, TRY_FROM, &m.lit) {
type_try_from.set_opt(&m.ident, Some(try_from_ty));
type_try_from.set_opt(&m.path, Some(try_from_ty));
}
}
// Parse `#[serde(into = "Type")]
Meta(NameValue(ref m)) if m.ident == INTO => {
Meta(NameValue(ref m)) if m.path == INTO => {
if let Ok(into_ty) = parse_lit_into_ty(cx, INTO, &m.lit) {
type_into.set_opt(&m.ident, Some(into_ty));
type_into.set_opt(&m.path, Some(into_ty));
}
}
// Parse `#[serde(remote = "...")]`
Meta(NameValue(ref m)) if m.ident == REMOTE => {
Meta(NameValue(ref m)) if m.path == REMOTE => {
if let Ok(path) = parse_lit_into_path(cx, REMOTE, &m.lit) {
if is_primitive_path(&path, "Self") {
remote.set(&m.ident, item.ident.clone().into());
remote.set(&m.path, item.ident.clone().into());
} else {
remote.set(&m.ident, path);
remote.set(&m.path, path);
}
}
}
// Parse `#[serde(field_identifier)]`
Meta(Word(ref word)) if word == FIELD_IDENTIFIER => {
Meta(Path(ref word)) if word == FIELD_IDENTIFIER => {
field_identifier.set_true(word);
}
// Parse `#[serde(variant_identifier)]`
Meta(Word(ref word)) if word == VARIANT_IDENTIFIER => {
Meta(Path(ref word)) if word == VARIANT_IDENTIFIER => {
variant_identifier.set_true(word);
}
// Parse `#[serde(crate = "foo")]`
Meta(NameValue(ref m)) if m.ident == CRATE => {
Meta(NameValue(ref m)) if m.path == CRATE => {
if let Ok(path) = parse_lit_into_path(cx, CRATE, &m.lit) {
serde_path.set(&m.ident, path)
serde_path.set(&m.path, path)
}
}
Meta(ref meta_item) => {
let path = meta_item
.path()
.into_token_stream()
.to_string()
.replace(' ', "");
cx.error_spanned_by(
meta_item.name(),
format!("unknown serde container attribute `{}`", meta_item.name()),
meta_item.path(),
format!("unknown serde container attribute `{}`", path),
);
}
Literal(ref lit) => {
Lit(ref lit) => {
cx.error_spanned_by(lit, "unexpected literal in serde container attribute");
}
}
@ -907,39 +910,39 @@ impl Variant {
for meta_item in meta_items {
match meta_item {
// Parse `#[serde(rename = "foo")]`
Meta(NameValue(ref m)) if m.ident == RENAME => {
Meta(NameValue(ref m)) if m.path == RENAME => {
if let Ok(s) = get_lit_str(cx, RENAME, &m.lit) {
ser_name.set(&m.ident, s.value());
ser_name.set(&m.path, s.value());
de_name.set_if_none(s.value());
de_aliases.insert(&m.ident, s.value());
de_aliases.insert(&m.path, s.value());
}
}
// Parse `#[serde(rename(serialize = "foo", deserialize = "bar"))]`
Meta(List(ref m)) if m.ident == RENAME => {
Meta(List(ref m)) if m.path == RENAME => {
if let Ok((ser, de)) = get_multiple_renames(cx, &m.nested) {
ser_name.set_opt(&m.ident, ser.map(syn::LitStr::value));
ser_name.set_opt(&m.path, ser.map(syn::LitStr::value));
for de_value in de {
de_name.set_if_none(de_value.value());
de_aliases.insert(&m.ident, de_value.value());
de_aliases.insert(&m.path, de_value.value());
}
}
}
// Parse `#[serde(alias = "foo")]`
Meta(NameValue(ref m)) if m.ident == ALIAS => {
Meta(NameValue(ref m)) if m.path == ALIAS => {
if let Ok(s) = get_lit_str(cx, ALIAS, &m.lit) {
de_aliases.insert(&m.ident, s.value());
de_aliases.insert(&m.path, s.value());
}
}
// Parse `#[serde(rename_all = "foo")]`
Meta(NameValue(ref m)) if m.ident == RENAME_ALL => {
Meta(NameValue(ref m)) if m.path == RENAME_ALL => {
if let Ok(s) = get_lit_str(cx, RENAME_ALL, &m.lit) {
match RenameRule::from_str(&s.value()) {
Ok(rename_rule) => {
rename_all_ser_rule.set(&m.ident, rename_rule);
rename_all_de_rule.set(&m.ident, rename_rule);
rename_all_ser_rule.set(&m.path, rename_rule);
rename_all_de_rule.set(&m.path, rename_rule);
}
Err(()) => cx.error_spanned_by(
s,
@ -954,12 +957,12 @@ impl Variant {
}
// Parse `#[serde(rename_all(serialize = "foo", deserialize = "bar"))]`
Meta(List(ref m)) if m.ident == RENAME_ALL => {
Meta(List(ref m)) if m.path == RENAME_ALL => {
if let Ok((ser, de)) = get_renames(cx, &m.nested) {
if let Some(ser) = ser {
match RenameRule::from_str(&ser.value()) {
Ok(rename_rule) => {
rename_all_ser_rule.set(&m.ident, rename_rule)
rename_all_ser_rule.set(&m.path, rename_rule)
}
Err(()) => cx.error_spanned_by(
ser,
@ -973,9 +976,7 @@ impl Variant {
}
if let Some(de) = de {
match RenameRule::from_str(&de.value()) {
Ok(rename_rule) => {
rename_all_de_rule.set(&m.ident, rename_rule)
}
Ok(rename_rule) => rename_all_de_rule.set(&m.path, rename_rule),
Err(()) => cx.error_spanned_by(
de,
format!(
@ -990,79 +991,79 @@ impl Variant {
}
// Parse `#[serde(skip)]`
Meta(Word(ref word)) if word == SKIP => {
Meta(Path(ref word)) if word == SKIP => {
skip_serializing.set_true(word);
skip_deserializing.set_true(word);
}
// Parse `#[serde(skip_deserializing)]`
Meta(Word(ref word)) if word == SKIP_DESERIALIZING => {
Meta(Path(ref word)) if word == SKIP_DESERIALIZING => {
skip_deserializing.set_true(word);
}
// Parse `#[serde(skip_serializing)]`
Meta(Word(ref word)) if word == SKIP_SERIALIZING => {
Meta(Path(ref word)) if word == SKIP_SERIALIZING => {
skip_serializing.set_true(word);
}
// Parse `#[serde(other)]`
Meta(Word(ref word)) if word == OTHER => {
Meta(Path(ref word)) if word == OTHER => {
other.set_true(word);
}
// Parse `#[serde(bound = "T: SomeBound")]`
Meta(NameValue(ref m)) if m.ident == BOUND => {
Meta(NameValue(ref m)) if m.path == BOUND => {
if let Ok(where_predicates) = parse_lit_into_where(cx, BOUND, BOUND, &m.lit)
{
ser_bound.set(&m.ident, where_predicates.clone());
de_bound.set(&m.ident, where_predicates);
ser_bound.set(&m.path, where_predicates.clone());
de_bound.set(&m.path, where_predicates);
}
}
// Parse `#[serde(bound(serialize = "...", deserialize = "..."))]`
Meta(List(ref m)) if m.ident == BOUND => {
Meta(List(ref m)) if m.path == BOUND => {
if let Ok((ser, de)) = get_where_predicates(cx, &m.nested) {
ser_bound.set_opt(&m.ident, ser);
de_bound.set_opt(&m.ident, de);
ser_bound.set_opt(&m.path, ser);
de_bound.set_opt(&m.path, de);
}
}
// Parse `#[serde(with = "...")]`
Meta(NameValue(ref m)) if m.ident == WITH => {
Meta(NameValue(ref m)) if m.path == WITH => {
if let Ok(path) = parse_lit_into_expr_path(cx, WITH, &m.lit) {
let mut ser_path = path.clone();
ser_path
.path
.segments
.push(Ident::new("serialize", Span::call_site()).into());
serialize_with.set(&m.ident, ser_path);
serialize_with.set(&m.path, ser_path);
let mut de_path = path;
de_path
.path
.segments
.push(Ident::new("deserialize", Span::call_site()).into());
deserialize_with.set(&m.ident, de_path);
deserialize_with.set(&m.path, de_path);
}
}
// Parse `#[serde(serialize_with = "...")]`
Meta(NameValue(ref m)) if m.ident == SERIALIZE_WITH => {
Meta(NameValue(ref m)) if m.path == SERIALIZE_WITH => {
if let Ok(path) = parse_lit_into_expr_path(cx, SERIALIZE_WITH, &m.lit) {
serialize_with.set(&m.ident, path);
serialize_with.set(&m.path, path);
}
}
// Parse `#[serde(deserialize_with = "...")]`
Meta(NameValue(ref m)) if m.ident == DESERIALIZE_WITH => {
Meta(NameValue(ref m)) if m.path == DESERIALIZE_WITH => {
if let Ok(path) = parse_lit_into_expr_path(cx, DESERIALIZE_WITH, &m.lit) {
deserialize_with.set(&m.ident, path);
deserialize_with.set(&m.path, path);
}
}
// Defer `#[serde(borrow)]` and `#[serde(borrow = "'a + 'b")]`
Meta(ref m) if m.name() == "borrow" => match variant.fields {
Meta(ref m) if m.path() == BORROW => match variant.fields {
syn::Fields::Unnamed(ref fields) if fields.unnamed.len() == 1 => {
borrow.set(m.name(), m.clone());
borrow.set(m.path(), m.clone());
}
_ => {
cx.error_spanned_by(
@ -1073,13 +1074,18 @@ impl Variant {
},
Meta(ref meta_item) => {
let path = meta_item
.path()
.into_token_stream()
.to_string()
.replace(' ', "");
cx.error_spanned_by(
meta_item.name(),
format!("unknown serde variant attribute `{}`", meta_item.name()),
meta_item.path(),
format!("unknown serde variant attribute `{}`", path),
);
}
Literal(ref lit) => {
Lit(ref lit) => {
cx.error_spanned_by(lit, "unexpected literal in serde variant attribute");
}
}
@ -1231,126 +1237,126 @@ impl Field {
for meta_item in meta_items {
match meta_item {
// Parse `#[serde(rename = "foo")]`
Meta(NameValue(ref m)) if m.ident == RENAME => {
Meta(NameValue(ref m)) if m.path == RENAME => {
if let Ok(s) = get_lit_str(cx, RENAME, &m.lit) {
ser_name.set(&m.ident, s.value());
ser_name.set(&m.path, s.value());
de_name.set_if_none(s.value());
de_aliases.insert(&m.ident, s.value());
de_aliases.insert(&m.path, s.value());
}
}
// Parse `#[serde(rename(serialize = "foo", deserialize = "bar"))]`
Meta(List(ref m)) if m.ident == RENAME => {
Meta(List(ref m)) if m.path == RENAME => {
if let Ok((ser, de)) = get_multiple_renames(cx, &m.nested) {
ser_name.set_opt(&m.ident, ser.map(syn::LitStr::value));
ser_name.set_opt(&m.path, ser.map(syn::LitStr::value));
for de_value in de {
de_name.set_if_none(de_value.value());
de_aliases.insert(&m.ident, de_value.value());
de_aliases.insert(&m.path, de_value.value());
}
}
}
// Parse `#[serde(alias = "foo")]`
Meta(NameValue(ref m)) if m.ident == ALIAS => {
Meta(NameValue(ref m)) if m.path == ALIAS => {
if let Ok(s) = get_lit_str(cx, ALIAS, &m.lit) {
de_aliases.insert(&m.ident, s.value());
de_aliases.insert(&m.path, s.value());
}
}
// Parse `#[serde(default)]`
Meta(Word(ref word)) if word == DEFAULT => {
Meta(Path(ref word)) if word == DEFAULT => {
default.set(word, Default::Default);
}
// Parse `#[serde(default = "...")]`
Meta(NameValue(ref m)) if m.ident == DEFAULT => {
Meta(NameValue(ref m)) if m.path == DEFAULT => {
if let Ok(path) = parse_lit_into_expr_path(cx, DEFAULT, &m.lit) {
default.set(&m.ident, Default::Path(path));
default.set(&m.path, Default::Path(path));
}
}
// Parse `#[serde(skip_serializing)]`
Meta(Word(ref word)) if word == SKIP_SERIALIZING => {
Meta(Path(ref word)) if word == SKIP_SERIALIZING => {
skip_serializing.set_true(word);
}
// Parse `#[serde(skip_deserializing)]`
Meta(Word(ref word)) if word == SKIP_DESERIALIZING => {
Meta(Path(ref word)) if word == SKIP_DESERIALIZING => {
skip_deserializing.set_true(word);
}
// Parse `#[serde(skip)]`
Meta(Word(ref word)) if word == SKIP => {
Meta(Path(ref word)) if word == SKIP => {
skip_serializing.set_true(word);
skip_deserializing.set_true(word);
}
// Parse `#[serde(skip_serializing_if = "...")]`
Meta(NameValue(ref m)) if m.ident == SKIP_SERIALIZING_IF => {
Meta(NameValue(ref m)) if m.path == SKIP_SERIALIZING_IF => {
if let Ok(path) = parse_lit_into_expr_path(cx, SKIP_SERIALIZING_IF, &m.lit)
{
skip_serializing_if.set(&m.ident, path);
skip_serializing_if.set(&m.path, path);
}
}
// Parse `#[serde(serialize_with = "...")]`
Meta(NameValue(ref m)) if m.ident == SERIALIZE_WITH => {
Meta(NameValue(ref m)) if m.path == SERIALIZE_WITH => {
if let Ok(path) = parse_lit_into_expr_path(cx, SERIALIZE_WITH, &m.lit) {
serialize_with.set(&m.ident, path);
serialize_with.set(&m.path, path);
}
}
// Parse `#[serde(deserialize_with = "...")]`
Meta(NameValue(ref m)) if m.ident == DESERIALIZE_WITH => {
Meta(NameValue(ref m)) if m.path == DESERIALIZE_WITH => {
if let Ok(path) = parse_lit_into_expr_path(cx, DESERIALIZE_WITH, &m.lit) {
deserialize_with.set(&m.ident, path);
deserialize_with.set(&m.path, path);
}
}
// Parse `#[serde(with = "...")]`
Meta(NameValue(ref m)) if m.ident == WITH => {
Meta(NameValue(ref m)) if m.path == WITH => {
if let Ok(path) = parse_lit_into_expr_path(cx, WITH, &m.lit) {
let mut ser_path = path.clone();
ser_path
.path
.segments
.push(Ident::new("serialize", Span::call_site()).into());
serialize_with.set(&m.ident, ser_path);
serialize_with.set(&m.path, ser_path);
let mut de_path = path;
de_path
.path
.segments
.push(Ident::new("deserialize", Span::call_site()).into());
deserialize_with.set(&m.ident, de_path);
deserialize_with.set(&m.path, de_path);
}
}
// Parse `#[serde(bound = "T: SomeBound")]`
Meta(NameValue(ref m)) if m.ident == BOUND => {
Meta(NameValue(ref m)) if m.path == BOUND => {
if let Ok(where_predicates) = parse_lit_into_where(cx, BOUND, BOUND, &m.lit)
{
ser_bound.set(&m.ident, where_predicates.clone());
de_bound.set(&m.ident, where_predicates);
ser_bound.set(&m.path, where_predicates.clone());
de_bound.set(&m.path, where_predicates);
}
}
// Parse `#[serde(bound(serialize = "...", deserialize = "..."))]`
Meta(List(ref m)) if m.ident == BOUND => {
Meta(List(ref m)) if m.path == BOUND => {
if let Ok((ser, de)) = get_where_predicates(cx, &m.nested) {
ser_bound.set_opt(&m.ident, ser);
de_bound.set_opt(&m.ident, de);
ser_bound.set_opt(&m.path, ser);
de_bound.set_opt(&m.path, de);
}
}
// Parse `#[serde(borrow)]`
Meta(Word(ref word)) if word == BORROW => {
Meta(Path(ref word)) if word == BORROW => {
if let Ok(borrowable) = borrowable_lifetimes(cx, &ident, field) {
borrowed_lifetimes.set(word, borrowable);
}
}
// Parse `#[serde(borrow = "'a + 'b")]`
Meta(NameValue(ref m)) if m.ident == BORROW => {
Meta(NameValue(ref m)) if m.path == BORROW => {
if let Ok(lifetimes) = parse_lit_into_lifetimes(cx, BORROW, &m.lit) {
if let Ok(borrowable) = borrowable_lifetimes(cx, &ident, field) {
for lifetime in &lifetimes {
@ -1364,31 +1370,36 @@ impl Field {
);
}
}
borrowed_lifetimes.set(&m.ident, lifetimes);
borrowed_lifetimes.set(&m.path, lifetimes);
}
}
}
// Parse `#[serde(getter = "...")]`
Meta(NameValue(ref m)) if m.ident == GETTER => {
Meta(NameValue(ref m)) if m.path == GETTER => {
if let Ok(path) = parse_lit_into_expr_path(cx, GETTER, &m.lit) {
getter.set(&m.ident, path);
getter.set(&m.path, path);
}
}
// Parse `#[serde(flatten)]`
Meta(Word(ref word)) if word == FLATTEN => {
Meta(Path(ref word)) if word == FLATTEN => {
flatten.set_true(word);
}
Meta(ref meta_item) => {
let path = meta_item
.path()
.into_token_stream()
.to_string()
.replace(' ', "");
cx.error_spanned_by(
meta_item.name(),
format!("unknown serde field attribute `{}`", meta_item.name()),
meta_item.path(),
format!("unknown serde field attribute `{}`", path),
);
}
Literal(ref lit) => {
Lit(ref lit) => {
cx.error_spanned_by(lit, "unexpected literal in serde field attribute");
}
}
@ -1564,15 +1575,15 @@ where
for meta in metas {
match *meta {
Meta(NameValue(ref meta)) if meta.ident == SERIALIZE => {
Meta(NameValue(ref meta)) if meta.path == SERIALIZE => {
if let Ok(v) = f(cx, attr_name, SERIALIZE, &meta.lit) {
ser_meta.insert(&meta.ident, v);
ser_meta.insert(&meta.path, v);
}
}
Meta(NameValue(ref meta)) if meta.ident == DESERIALIZE => {
Meta(NameValue(ref meta)) if meta.path == DESERIALIZE => {
if let Ok(v) = f(cx, attr_name, DESERIALIZE, &meta.lit) {
de_meta.insert(&meta.ident, v);
de_meta.insert(&meta.path, v);
}
}
@ -1619,8 +1630,8 @@ fn get_where_predicates(
pub fn get_serde_meta_items(attr: &syn::Attribute) -> Option<Vec<syn::NestedMeta>> {
if attr.path == SERDE {
match attr.interpret_meta() {
Some(List(ref meta)) => Some(meta.nested.iter().cloned().collect()),
match attr.parse_meta() {
Ok(List(ref meta)) => Some(meta.nested.iter().cloned().collect()),
_ => {
// TODO: produce an error
None
@ -1778,7 +1789,7 @@ fn is_cow(ty: &syn::Type, elem: fn(&syn::Type) -> bool) -> bool {
}
};
let seg = match path.segments.last() {
Some(seg) => seg.into_value(),
Some(seg) => seg,
None => {
return false;
}
@ -1805,7 +1816,7 @@ fn is_option(ty: &syn::Type, elem: fn(&syn::Type) -> bool) -> bool {
}
};
let seg = match path.segments.last() {
Some(seg) => seg.into_value(),
Some(seg) => seg,
None => {
return false;
}
@ -1957,7 +1968,8 @@ fn collect_lifetimes(ty: &syn::Type, out: &mut BTreeSet<syn::Lifetime>) {
| syn::Type::ImplTrait(_)
| syn::Type::Infer(_)
| syn::Type::Macro(_)
| syn::Type::Verbatim(_) => {}
| syn::Type::Verbatim(_)
| _ => {}
}
}

2
serde_derive/src/internals/check.rs
View File

@ -407,7 +407,7 @@ fn member_message(member: &Member) -> String {
fn allow_transparent(field: &Field, derive: Derive) -> bool {
if let Type::Path(ref ty) = *field.ty {
if let Some(seg) = ty.path.segments.last() {
if seg.into_value().ident == "PhantomData" {
if seg.ident == "PhantomData" {
return false;
}
}

6
serde_derive/src/internals/symbol.rs
View File

@ -54,6 +54,12 @@ impl PartialEq<Symbol> for Path {
}
}
impl<'a> PartialEq<Symbol> for &'a Path {
fn eq(&self, word: &Symbol) -> bool {
self.is_ident(word.0)
}
}
impl Display for Symbol {
fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
formatter.write_str(self.0)

2
serde_derive/src/ser.rs
View File

@ -116,7 +116,7 @@ impl Parameters {
/// Type name to use in error messages and `&'static str` arguments to
/// various Serializer methods.
fn type_name(&self) -> String {
self.this.segments.last().unwrap().value().ident.to_string()
self.this.segments.last().unwrap().ident.to_string()
}
}