1878 lines
56 KiB
Rust
1878 lines
56 KiB
Rust
//! In-memory representation of Preserves `Value`s.
|
|
|
|
use num::bigint::BigInt;
|
|
use num::traits::cast::ToPrimitive;
|
|
use std::borrow::Cow;
|
|
use std::cmp::Ordering;
|
|
use std::convert::From;
|
|
use std::convert::TryFrom;
|
|
use std::convert::TryInto;
|
|
use std::fmt::Debug;
|
|
use std::hash::{Hash, Hasher};
|
|
use std::io;
|
|
use std::ops::Index;
|
|
use std::ops::IndexMut;
|
|
use std::string::String;
|
|
use std::sync::Arc;
|
|
use std::vec::Vec;
|
|
|
|
pub use std::collections::BTreeMap as Map;
|
|
pub use std::collections::BTreeSet as Set;
|
|
|
|
use super::signed_integer::SignedInteger;
|
|
use super::text;
|
|
use super::DebugDomainEncode;
|
|
use super::FromStrDomainParse;
|
|
use super::IOValueDomainCodec;
|
|
use super::TextWriter;
|
|
use super::Writer;
|
|
use crate::error::{Error, ExpectedKind, Received};
|
|
|
|
/// A `Domain` implementation allows a Rust value to be placed as a Preserves [embedded
|
|
/// value](https://preserves.dev/preserves.html#embeddeds) inside a Preserves term. (See also
|
|
/// [Embeddable].)
|
|
pub trait Domain: Sized + Debug + Eq + Hash + Ord {
|
|
fn debug_encode<W: Writer>(&self, w: &mut W) -> io::Result<()> {
|
|
w.write_string(&format!("{:?}", self))
|
|
}
|
|
}
|
|
|
|
/// Any Rust value that implements [`Domain`] and `Clone` is automatically `Embeddable`, and
|
|
/// may be placed as a Preserves [embedded
|
|
/// value](https://preserves.dev/preserves.html#embeddeds) inside a Preserves term. (See also
|
|
/// [Domain].)
|
|
pub trait Embeddable: Domain + Clone {}
|
|
impl<T> Embeddable for T where T: Domain + Clone {}
|
|
|
|
impl<D: Domain> Domain for Arc<D> {
|
|
fn debug_encode<W: Writer>(&self, w: &mut W) -> io::Result<()> {
|
|
self.as_ref().debug_encode(w)
|
|
}
|
|
}
|
|
|
|
/// This is the **primary programming interface** to Preserves values. The most common and
|
|
/// useful implementations of this trait are first [IOValue] and second [ArcValue].
|
|
pub trait NestedValue: Sized + Debug + Clone + Eq + Hash + Ord {
|
|
/// Every representation of Preserves values has an associated type: that of the Rust data
|
|
/// able to be [embedded](https://preserves.dev/preserves.html#embeddeds) inside a value.
|
|
type Embedded: Embeddable;
|
|
|
|
/// `v` can be converted to a [Value]; `new` does this and then [wrap][Value::wrap]s it to
|
|
/// yield an instance of [Self].
|
|
#[inline(always)]
|
|
fn new<V>(v: V) -> Self
|
|
where
|
|
Value<Self>: From<V>,
|
|
{
|
|
Value::from(v).wrap()
|
|
}
|
|
|
|
/// [Embeds](https://preserves.dev/preserves.html#embeddeds) `e` to a Preserves embedded
|
|
/// value; `e` is first converted to [Self::Embedded].
|
|
#[inline(always)]
|
|
fn domain<E>(e: E) -> Self
|
|
where
|
|
Self::Embedded: From<E>,
|
|
{
|
|
Value::Embedded(e.into()).wrap()
|
|
}
|
|
|
|
/// Yields a Preserves `Symbol` embodying the given text, `n`.
|
|
#[inline(always)]
|
|
fn symbol(n: &str) -> Self {
|
|
Value::symbol(n).wrap()
|
|
}
|
|
|
|
/// Yields a Preserves `ByteString`.
|
|
#[inline(always)]
|
|
fn bytestring<'a, V: Into<Cow<'a, [u8]>>>(v: V) -> Self {
|
|
Value::bytestring(v).wrap()
|
|
}
|
|
|
|
/// Attaches the given [Annotations] to the [Value].
|
|
fn wrap(anns: Annotations<Self>, v: Value<Self>) -> Self;
|
|
|
|
/// Retrieves any annotations attached to `self`.
|
|
fn annotations(&self) -> &Annotations<Self>;
|
|
/// Retrieves the underlying [Value] represented by `self`.
|
|
fn value(&self) -> &Value<Self>;
|
|
/// Consumes `self`, yielding its annotations and underlying [Value].
|
|
fn pieces(self) -> (Annotations<Self>, Value<Self>);
|
|
/// Consumes `self`, yielding its underlying [Value] and discarding its annotations.
|
|
fn value_owned(self) -> Value<Self>;
|
|
|
|
/// Retrieves the [ValueClass] of `self`.
|
|
#[inline(always)]
|
|
fn value_class(&self) -> ValueClass {
|
|
self.value().value_class()
|
|
}
|
|
|
|
/// Supplies an opportunity to customize debug formatting for `self`. Defaults to writing
|
|
/// `@`-prefixed annotations followed by the underlying value.
|
|
fn debug_fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
|
|
for ann in self.annotations().slice() {
|
|
write!(f, "@{:?} ", ann)?;
|
|
}
|
|
self.value().fmt(f)
|
|
}
|
|
|
|
/// Yields a deep copy of `self` with all annotations (recursively) removed.
|
|
fn strip_annotations<M: NestedValue<Embedded = Self::Embedded>>(&self) -> M {
|
|
M::wrap(Annotations::empty(), self.value().strip_annotations())
|
|
}
|
|
|
|
/// Yields a deep copy of `self`, mapping embedded values to a new type via `f`.
|
|
fn copy_via<M: NestedValue, F, Err>(&self, f: &mut F) -> Result<M, Err>
|
|
where
|
|
F: FnMut(&Self::Embedded) -> Result<Value<M>, Err>,
|
|
{
|
|
Ok(M::wrap(
|
|
self.annotations().copy_via(f)?,
|
|
self.value().copy_via(f)?,
|
|
))
|
|
}
|
|
|
|
/// Calls `f` once for each (recursively) embedded [Self::Embedded] value in `self`.
|
|
fn foreach_embedded<F, Err>(&self, f: &mut F) -> Result<(), Err>
|
|
where
|
|
F: FnMut(&Self::Embedded) -> Result<(), Err>,
|
|
{
|
|
match &self.annotations().0 {
|
|
None => (),
|
|
Some(vs) => {
|
|
for v in vs.iter() {
|
|
v.foreach_embedded(f)?
|
|
}
|
|
}
|
|
}
|
|
self.value().foreach_embedded(f)
|
|
}
|
|
}
|
|
|
|
/// The `Value`s from the specification.
|
|
#[derive(Clone, PartialEq, Eq, Hash, PartialOrd, Ord)]
|
|
pub enum Value<N: NestedValue> {
|
|
Boolean(bool),
|
|
Double(Double),
|
|
SignedInteger(SignedInteger),
|
|
String(String),
|
|
ByteString(Vec<u8>),
|
|
Symbol(String),
|
|
Record(Record<N>),
|
|
Sequence(Vec<N>),
|
|
Set(Set<N>),
|
|
Dictionary(Map<N, N>),
|
|
Embedded(N::Embedded),
|
|
}
|
|
|
|
/// The kinds of `Value` from the specification.
|
|
#[derive(Debug, Clone, PartialEq, Eq, Hash, PartialOrd, Ord)]
|
|
pub enum ValueClass {
|
|
Atomic(AtomClass),
|
|
Compound(CompoundClass),
|
|
Embedded,
|
|
}
|
|
|
|
/// The kinds of `Atom` from the specification.
|
|
#[derive(Debug, Clone, PartialEq, Eq, Hash, PartialOrd, Ord)]
|
|
pub enum AtomClass {
|
|
Boolean,
|
|
Double,
|
|
SignedInteger,
|
|
String,
|
|
ByteString,
|
|
Symbol,
|
|
}
|
|
|
|
/// The kinds of `Compound` from the specification.
|
|
#[derive(Debug, Clone, PartialEq, Eq, Hash, PartialOrd, Ord)]
|
|
pub enum CompoundClass {
|
|
Record,
|
|
Sequence,
|
|
Set,
|
|
Dictionary,
|
|
}
|
|
|
|
/// Double-precision IEEE 754 Value
|
|
#[derive(Clone, Copy, Debug)]
|
|
pub struct Double(pub f64);
|
|
|
|
/// A Record `Value`.
|
|
///
|
|
/// INVARIANT: The length of the contained vector **MUST** always be non-zero.
|
|
#[derive(Clone, Debug, PartialEq, Eq, Hash, PartialOrd, Ord)]
|
|
pub struct Record<N>(pub Vec<N>);
|
|
|
|
impl<N> Record<N> {
|
|
/// Retrieve the record's label.
|
|
#[inline(always)]
|
|
pub fn label(&self) -> &N {
|
|
&self.0[0]
|
|
}
|
|
|
|
/// Retrieve a mutable reference to the record's label.
|
|
#[inline(always)]
|
|
pub fn label_mut(&mut self) -> &mut N {
|
|
&mut self.0[0]
|
|
}
|
|
|
|
/// Retrieve the arity of the record, the number of fields it has.
|
|
#[inline(always)]
|
|
pub fn arity(&self) -> usize {
|
|
self.0.len() - 1
|
|
}
|
|
|
|
/// Retrieve a slice containing the fields of the record.
|
|
#[inline(always)]
|
|
pub fn fields(&self) -> &[N] {
|
|
&self.0[1..]
|
|
}
|
|
|
|
/// Retrieve a mutable slice containing the fields of the record.
|
|
#[inline(always)]
|
|
pub fn fields_mut(&mut self) -> &mut [N] {
|
|
&mut self.0[1..]
|
|
}
|
|
|
|
/// Retrieve a reference to a vector containing the record's label and fields.
|
|
#[inline(always)]
|
|
pub fn fields_vec(&self) -> &Vec<N> {
|
|
&self.0
|
|
}
|
|
|
|
/// Retrieve a mutable reference to a vector containing the record's label and fields.
|
|
#[inline(always)]
|
|
pub fn fields_vec_mut(&mut self) -> &mut Vec<N> {
|
|
&mut self.0
|
|
}
|
|
|
|
/// Converts `self` into a [Value].
|
|
#[inline(always)]
|
|
pub fn finish(self) -> Value<N>
|
|
where
|
|
N: NestedValue,
|
|
{
|
|
Value::Record(self)
|
|
}
|
|
}
|
|
|
|
impl From<f64> for Double {
|
|
fn from(v: f64) -> Self {
|
|
Double(v)
|
|
}
|
|
}
|
|
|
|
impl From<Double> for f64 {
|
|
fn from(v: Double) -> Self {
|
|
v.0
|
|
}
|
|
}
|
|
|
|
impl Hash for Double {
|
|
fn hash<H: Hasher>(&self, state: &mut H) {
|
|
self.0.to_bits().hash(state);
|
|
}
|
|
}
|
|
|
|
impl PartialEq for Double {
|
|
fn eq(&self, other: &Self) -> bool {
|
|
self.0.to_bits() == other.0.to_bits()
|
|
}
|
|
}
|
|
|
|
impl Ord for Double {
|
|
fn cmp(&self, other: &Self) -> Ordering {
|
|
let mut a: u64 = self.0.to_bits();
|
|
let mut b: u64 = other.0.to_bits();
|
|
if a & 0x8000_0000_0000_0000 != 0 {
|
|
a ^= 0x7fff_ffff_ffff_ffff;
|
|
}
|
|
if b & 0x8000_0000_0000_0000 != 0 {
|
|
b ^= 0x7fff_ffff_ffff_ffff;
|
|
}
|
|
(a as i64).cmp(&(b as i64))
|
|
}
|
|
}
|
|
|
|
impl PartialOrd for Double {
|
|
fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
|
|
Some(self.cmp(other))
|
|
}
|
|
}
|
|
|
|
impl Eq for Double {}
|
|
|
|
impl<N: NestedValue> From<bool> for Value<N> {
|
|
fn from(v: bool) -> Self {
|
|
Value::Boolean(v)
|
|
}
|
|
}
|
|
impl<N: NestedValue> From<&bool> for Value<N> {
|
|
fn from(v: &bool) -> Self {
|
|
Value::Boolean(*v)
|
|
}
|
|
}
|
|
|
|
impl<N: NestedValue> From<f64> for Value<N> {
|
|
fn from(v: f64) -> Self {
|
|
Value::Double(Double::from(v))
|
|
}
|
|
}
|
|
impl<N: NestedValue> From<&f64> for Value<N> {
|
|
fn from(v: &f64) -> Self {
|
|
Value::Double(Double::from(*v))
|
|
}
|
|
}
|
|
impl<N: NestedValue> From<&Double> for Value<N> {
|
|
fn from(v: &Double) -> Self {
|
|
Value::Double(v.clone())
|
|
}
|
|
}
|
|
|
|
impl<N: NestedValue> From<u8> for Value<N> {
|
|
fn from(v: u8) -> Self {
|
|
Value::from(i128::from(v))
|
|
}
|
|
}
|
|
impl<N: NestedValue> From<i8> for Value<N> {
|
|
fn from(v: i8) -> Self {
|
|
Value::from(i128::from(v))
|
|
}
|
|
}
|
|
impl<N: NestedValue> From<u16> for Value<N> {
|
|
fn from(v: u16) -> Self {
|
|
Value::from(i128::from(v))
|
|
}
|
|
}
|
|
impl<N: NestedValue> From<i16> for Value<N> {
|
|
fn from(v: i16) -> Self {
|
|
Value::from(i128::from(v))
|
|
}
|
|
}
|
|
impl<N: NestedValue> From<u32> for Value<N> {
|
|
fn from(v: u32) -> Self {
|
|
Value::from(i128::from(v))
|
|
}
|
|
}
|
|
impl<N: NestedValue> From<i32> for Value<N> {
|
|
fn from(v: i32) -> Self {
|
|
Value::from(i128::from(v))
|
|
}
|
|
}
|
|
impl<N: NestedValue> From<u64> for Value<N> {
|
|
fn from(v: u64) -> Self {
|
|
Value::from(i128::from(v))
|
|
}
|
|
}
|
|
impl<N: NestedValue> From<i64> for Value<N> {
|
|
fn from(v: i64) -> Self {
|
|
Value::from(i128::from(v))
|
|
}
|
|
}
|
|
impl<N: NestedValue> From<usize> for Value<N> {
|
|
fn from(v: usize) -> Self {
|
|
Value::from(v as u128)
|
|
}
|
|
}
|
|
impl<N: NestedValue> From<isize> for Value<N> {
|
|
fn from(v: isize) -> Self {
|
|
Value::from(v as i128)
|
|
}
|
|
}
|
|
impl<N: NestedValue> From<u128> for Value<N> {
|
|
fn from(v: u128) -> Self {
|
|
Value::SignedInteger(SignedInteger::from(v))
|
|
}
|
|
}
|
|
impl<N: NestedValue> From<i128> for Value<N> {
|
|
fn from(v: i128) -> Self {
|
|
Value::SignedInteger(SignedInteger::from(v))
|
|
}
|
|
}
|
|
impl<N: NestedValue> From<&BigInt> for Value<N> {
|
|
fn from(v: &BigInt) -> Self {
|
|
Value::SignedInteger(SignedInteger::from(Cow::Borrowed(v)))
|
|
}
|
|
}
|
|
impl<N: NestedValue> From<BigInt> for Value<N> {
|
|
fn from(v: BigInt) -> Self {
|
|
Value::SignedInteger(SignedInteger::from(Cow::Owned(v)))
|
|
}
|
|
}
|
|
impl<N: NestedValue> From<&SignedInteger> for Value<N> {
|
|
fn from(v: &SignedInteger) -> Self {
|
|
Value::SignedInteger(v.clone())
|
|
}
|
|
}
|
|
|
|
impl<N: NestedValue> From<&str> for Value<N> {
|
|
fn from(v: &str) -> Self {
|
|
Value::String(String::from(v))
|
|
}
|
|
}
|
|
impl<N: NestedValue> From<String> for Value<N> {
|
|
fn from(v: String) -> Self {
|
|
Value::String(v)
|
|
}
|
|
}
|
|
impl<N: NestedValue> From<&String> for Value<N> {
|
|
fn from(v: &String) -> Self {
|
|
Value::String(v.to_owned())
|
|
}
|
|
}
|
|
|
|
impl<N: NestedValue> From<&[u8]> for Value<N> {
|
|
fn from(v: &[u8]) -> Self {
|
|
Value::ByteString(Vec::from(v))
|
|
}
|
|
}
|
|
// impl<N: NestedValue> From<Vec<u8>> for Value<N> { fn from(v: Vec<u8>) -> Self { Value::ByteString(v) } }
|
|
|
|
impl<N: NestedValue> From<Vec<N>> for Value<N> {
|
|
fn from(v: Vec<N>) -> Self {
|
|
Value::Sequence(v)
|
|
}
|
|
}
|
|
impl<N: NestedValue> From<Set<N>> for Value<N> {
|
|
fn from(v: Set<N>) -> Self {
|
|
Value::Set(v)
|
|
}
|
|
}
|
|
impl<N: NestedValue> From<Map<N, N>> for Value<N> {
|
|
fn from(v: Map<N, N>) -> Self {
|
|
Value::Dictionary(v)
|
|
}
|
|
}
|
|
|
|
impl<N: NestedValue> Debug for Value<N> {
|
|
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
|
|
TextWriter::fmt_value(f, &mut DebugDomainEncode, self).map_err(|_| std::fmt::Error)
|
|
}
|
|
}
|
|
|
|
impl<
|
|
Err: Into<io::Error>,
|
|
D: Embeddable + std::str::FromStr<Err = Err>,
|
|
N: NestedValue<Embedded = D>,
|
|
> std::str::FromStr for Value<N>
|
|
{
|
|
type Err = io::Error;
|
|
|
|
fn from_str(s: &str) -> Result<Self, Self::Err> {
|
|
Ok(text::from_str::<N, _>(s, FromStrDomainParse)?.value_owned())
|
|
}
|
|
}
|
|
|
|
//---------------------------------------------------------------------------
|
|
|
|
impl<N: NestedValue> Value<N> {
|
|
/// Converts `self` to a [NestedValue] by supplying an empty collection of annotations.
|
|
pub fn wrap(self) -> N {
|
|
N::wrap(Annotations::empty(), self)
|
|
}
|
|
|
|
/// Retrieves the [ValueClass] of `self`.
|
|
fn value_class(&self) -> ValueClass {
|
|
match self {
|
|
Value::Boolean(_) => ValueClass::Atomic(AtomClass::Boolean),
|
|
Value::Double(_) => ValueClass::Atomic(AtomClass::Double),
|
|
Value::SignedInteger(_) => ValueClass::Atomic(AtomClass::SignedInteger),
|
|
Value::String(_) => ValueClass::Atomic(AtomClass::String),
|
|
Value::ByteString(_) => ValueClass::Atomic(AtomClass::ByteString),
|
|
Value::Symbol(_) => ValueClass::Atomic(AtomClass::Symbol),
|
|
Value::Record(_) => ValueClass::Compound(CompoundClass::Record),
|
|
Value::Sequence(_) => ValueClass::Compound(CompoundClass::Sequence),
|
|
Value::Set(_) => ValueClass::Compound(CompoundClass::Set),
|
|
Value::Dictionary(_) => ValueClass::Compound(CompoundClass::Dictionary),
|
|
Value::Embedded(_) => ValueClass::Embedded,
|
|
}
|
|
}
|
|
|
|
/// Retrieve a vector of the "children" of `self`.
|
|
///
|
|
/// For atoms, this is an empty vector. For records, it's all the fields (but not the
|
|
/// label). For sequences and sets, it's the contained values. For dictionaries, it's all
|
|
/// the values in the key-value mappings (but not the keys).
|
|
pub fn children(&self) -> Vec<N> {
|
|
match self {
|
|
Value::Boolean(_)
|
|
| Value::Double(_)
|
|
| Value::SignedInteger(_)
|
|
| Value::String(_)
|
|
| Value::ByteString(_)
|
|
| Value::Symbol(_)
|
|
| Value::Embedded(_) => vec![],
|
|
|
|
Value::Record(r) => r.fields().to_vec(),
|
|
Value::Sequence(vs) => vs.clone(),
|
|
Value::Set(s) => s.iter().cloned().collect(),
|
|
Value::Dictionary(d) => d.values().cloned().collect(),
|
|
}
|
|
}
|
|
|
|
fn expected(&self, k: ExpectedKind) -> Error {
|
|
Error::Expected(
|
|
k,
|
|
Received::ReceivedOtherValue(format!("{:?}", self.clone().wrap())),
|
|
)
|
|
}
|
|
|
|
/// True iff this is a [Value::Boolean].
|
|
#[inline(always)]
|
|
pub fn is_boolean(&self) -> bool {
|
|
self.as_boolean().is_some()
|
|
}
|
|
|
|
/// Yields `Some` iff this is a [Value::Boolean].
|
|
#[inline(always)]
|
|
pub fn as_boolean(&self) -> Option<bool> {
|
|
if let Value::Boolean(b) = self {
|
|
Some(*b)
|
|
} else {
|
|
None
|
|
}
|
|
}
|
|
|
|
/// Retrieve a mutable reference to the contained boolean value iff this is a [Value::Boolean].
|
|
#[inline(always)]
|
|
pub fn as_boolean_mut(&mut self) -> Option<&mut bool> {
|
|
if let Value::Boolean(b) = self {
|
|
Some(b)
|
|
} else {
|
|
None
|
|
}
|
|
}
|
|
|
|
/// Yields `Ok` iff this is a [Value::Boolean]; else [Error::Expected].
|
|
#[inline(always)]
|
|
pub fn to_boolean(&self) -> Result<bool, Error> {
|
|
self.as_boolean()
|
|
.ok_or_else(|| self.expected(ExpectedKind::Boolean))
|
|
}
|
|
|
|
/// True iff this is a [Value::Double].
|
|
#[inline(always)]
|
|
pub fn is_double(&self) -> bool {
|
|
self.as_double().is_some()
|
|
}
|
|
|
|
/// Yields `Some` iff this is a [Value::Double].
|
|
#[inline(always)]
|
|
pub fn as_double(&self) -> Option<&Double> {
|
|
if let Value::Double(f) = self {
|
|
Some(f)
|
|
} else {
|
|
None
|
|
}
|
|
}
|
|
|
|
/// Retrieve a mutable reference to the contained [Double] value iff this is a [Value::Double].
|
|
#[inline(always)]
|
|
pub fn as_double_mut(&mut self) -> Option<&mut Double> {
|
|
if let Value::Double(f) = self {
|
|
Some(f)
|
|
} else {
|
|
None
|
|
}
|
|
}
|
|
|
|
/// Yields `Ok` iff this is a [Value::Double]; else [Error::Expected].
|
|
#[inline(always)]
|
|
pub fn to_double(&self) -> Result<&Double, Error> {
|
|
self.as_double()
|
|
.ok_or_else(|| self.expected(ExpectedKind::Double))
|
|
}
|
|
|
|
/// As [Self::is_double].
|
|
#[inline(always)]
|
|
pub fn is_f64(&self) -> bool {
|
|
self.is_double()
|
|
}
|
|
|
|
/// As [Self::as_double], but yields [f64] instead of [Double].
|
|
#[inline(always)]
|
|
pub fn as_f64(&self) -> Option<f64> {
|
|
self.as_double().map(|f| f.0)
|
|
}
|
|
|
|
/// As [Self::as_double_mut], but [f64] instead of [Double].
|
|
#[inline(always)]
|
|
pub fn as_f64_mut(&mut self) -> Option<&mut f64> {
|
|
self.as_double_mut().map(|f| &mut f.0)
|
|
}
|
|
|
|
/// As [Self::to_double], but with [f64] instead of [Double].
|
|
#[inline(always)]
|
|
pub fn to_f64(&self) -> Result<f64, Error> {
|
|
self.to_double().map(|f| f.0)
|
|
}
|
|
|
|
/// True iff this is a [Value::SignedInteger].
|
|
#[inline(always)]
|
|
pub fn is_signedinteger(&self) -> bool {
|
|
self.as_signedinteger().is_some()
|
|
}
|
|
|
|
/// Yields `Some` iff this is a [Value::SignedInteger].
|
|
#[inline(always)]
|
|
pub fn as_signedinteger(&self) -> Option<&SignedInteger> {
|
|
if let Value::SignedInteger(n) = self {
|
|
Some(n)
|
|
} else {
|
|
None
|
|
}
|
|
}
|
|
|
|
/// Retrieve a mutable reference to the contained SignedInteger value iff this is a [Value::SignedInteger].
|
|
#[inline(always)]
|
|
pub fn as_signedinteger_mut(&mut self) -> Option<&mut SignedInteger> {
|
|
if let Value::SignedInteger(n) = self {
|
|
Some(n)
|
|
} else {
|
|
None
|
|
}
|
|
}
|
|
|
|
/// Yields `Ok` iff this is a [Value::SignedInteger]; else [Error::Expected].
|
|
#[inline(always)]
|
|
pub fn to_signedinteger(&self) -> Result<&SignedInteger, Error> {
|
|
self.as_signedinteger()
|
|
.ok_or_else(|| self.expected(ExpectedKind::SignedInteger))
|
|
}
|
|
|
|
/// True iff [Self::as_i] yields `Some`.
|
|
#[inline(always)]
|
|
pub fn is_i(&self) -> bool {
|
|
self.as_i().is_some()
|
|
}
|
|
|
|
/// Yields `Some` if `self` is a [Value::SignedInteger] that fits in [i128].
|
|
#[inline(always)]
|
|
pub fn as_i(&self) -> Option<i128> {
|
|
self.as_signedinteger().and_then(|n| n.try_into().ok())
|
|
}
|
|
|
|
/// Yields `Ok` if `self` is a [Value::SignedInteger] that fits in [i128]; else [Error::Expected].
|
|
#[inline(always)]
|
|
pub fn to_i(&self) -> Result<i128, Error> {
|
|
self.as_i()
|
|
.ok_or_else(|| self.expected(ExpectedKind::SignedIntegerI128))
|
|
}
|
|
|
|
/// True iff [Self::as_u] yields `Some`.
|
|
#[inline(always)]
|
|
pub fn is_u(&self) -> bool {
|
|
self.as_u().is_some()
|
|
}
|
|
|
|
/// Yields `Some` if `self` is a [Value::SignedInteger] that fits in [u128].
|
|
#[inline(always)]
|
|
pub fn as_u(&self) -> Option<u128> {
|
|
self.as_signedinteger().and_then(|n| n.try_into().ok())
|
|
}
|
|
|
|
/// Yields `Ok` if `self` is a [Value::SignedInteger] that fits in [u128]; else [Error::Expected].
|
|
#[inline(always)]
|
|
pub fn to_u(&self) -> Result<u128, Error> {
|
|
self.as_u()
|
|
.ok_or_else(|| self.expected(ExpectedKind::SignedIntegerU128))
|
|
}
|
|
|
|
/// Yields `Some` if `self` is a [Value::SignedInteger] that fits in [u8].
|
|
#[inline(always)]
|
|
pub fn as_u8(&self) -> Option<u8> {
|
|
self.as_u().and_then(|i| i.to_u8())
|
|
}
|
|
/// Yields `Some` if `self` is a [Value::SignedInteger] that fits in [i8].
|
|
#[inline(always)]
|
|
pub fn as_i8(&self) -> Option<i8> {
|
|
self.as_i().and_then(|i| i.to_i8())
|
|
}
|
|
/// Yields `Some` if `self` is a [Value::SignedInteger] that fits in [u16].
|
|
#[inline(always)]
|
|
pub fn as_u16(&self) -> Option<u16> {
|
|
self.as_u().and_then(|i| i.to_u16())
|
|
}
|
|
/// Yields `Some` if `self` is a [Value::SignedInteger] that fits in [i16].
|
|
#[inline(always)]
|
|
pub fn as_i16(&self) -> Option<i16> {
|
|
self.as_i().and_then(|i| i.to_i16())
|
|
}
|
|
/// Yields `Some` if `self` is a [Value::SignedInteger] that fits in [u32].
|
|
#[inline(always)]
|
|
pub fn as_u32(&self) -> Option<u32> {
|
|
self.as_u().and_then(|i| i.to_u32())
|
|
}
|
|
/// Yields `Some` if `self` is a [Value::SignedInteger] that fits in [i32].
|
|
#[inline(always)]
|
|
pub fn as_i32(&self) -> Option<i32> {
|
|
self.as_i().and_then(|i| i.to_i32())
|
|
}
|
|
/// Yields `Some` if `self` is a [Value::SignedInteger] that fits in [u64].
|
|
#[inline(always)]
|
|
pub fn as_u64(&self) -> Option<u64> {
|
|
self.as_u().and_then(|i| i.to_u64())
|
|
}
|
|
/// Yields `Some` if `self` is a [Value::SignedInteger] that fits in [i64].
|
|
#[inline(always)]
|
|
pub fn as_i64(&self) -> Option<i64> {
|
|
self.as_i().and_then(|i| i.to_i64())
|
|
}
|
|
/// Yields `Some` if `self` is a [Value::SignedInteger] that fits in [u128].
|
|
#[inline(always)]
|
|
pub fn as_u128(&self) -> Option<u128> {
|
|
self.as_u()
|
|
}
|
|
/// Yields `Some` if `self` is a [Value::SignedInteger] that fits in [i128].
|
|
#[inline(always)]
|
|
pub fn as_i128(&self) -> Option<i128> {
|
|
self.as_i()
|
|
}
|
|
/// Yields `Some` if `self` is a [Value::SignedInteger] that fits in [usize].
|
|
#[inline(always)]
|
|
pub fn as_usize(&self) -> Option<usize> {
|
|
self.as_u().and_then(|i| i.to_usize())
|
|
}
|
|
/// Yields `Some` if `self` is a [Value::SignedInteger] that fits in [isize].
|
|
#[inline(always)]
|
|
pub fn as_isize(&self) -> Option<isize> {
|
|
self.as_i().and_then(|i| i.to_isize())
|
|
}
|
|
|
|
/// Yields `Ok` if `self` is a [Value::SignedInteger] that fits in [i8];
|
|
/// otherwise, [Error::Expected] or [Error::NumberOutOfRange].
|
|
#[inline(always)]
|
|
pub fn to_i8(&self) -> Result<i8, Error> {
|
|
match self.as_i() {
|
|
Some(i) => i
|
|
.to_i8()
|
|
.ok_or_else(|| Error::NumberOutOfRange(BigInt::from(i))),
|
|
None => Err(self.expected(ExpectedKind::SignedInteger)),
|
|
}
|
|
}
|
|
|
|
/// Yields `Ok` if `self` is a [Value::SignedInteger] that fits in [u8];
|
|
/// otherwise, [Error::Expected] or [Error::NumberOutOfRange].
|
|
#[inline(always)]
|
|
pub fn to_u8(&self) -> Result<u8, Error> {
|
|
match self.as_u() {
|
|
Some(i) => i
|
|
.to_u8()
|
|
.ok_or_else(|| Error::NumberOutOfRange(BigInt::from(i))),
|
|
None => Err(self.expected(ExpectedKind::SignedInteger)),
|
|
}
|
|
}
|
|
|
|
/// Yields `Ok` if `self` is a [Value::SignedInteger] that fits in [i16];
|
|
/// otherwise, [Error::Expected] or [Error::NumberOutOfRange].
|
|
#[inline(always)]
|
|
pub fn to_i16(&self) -> Result<i16, Error> {
|
|
match self.as_i() {
|
|
Some(i) => i
|
|
.to_i16()
|
|
.ok_or_else(|| Error::NumberOutOfRange(BigInt::from(i))),
|
|
None => Err(self.expected(ExpectedKind::SignedInteger)),
|
|
}
|
|
}
|
|
|
|
/// Yields `Ok` if `self` is a [Value::SignedInteger] that fits in [u16];
|
|
/// otherwise, [Error::Expected] or [Error::NumberOutOfRange].
|
|
#[inline(always)]
|
|
pub fn to_u16(&self) -> Result<u16, Error> {
|
|
match self.as_u() {
|
|
Some(i) => i
|
|
.to_u16()
|
|
.ok_or_else(|| Error::NumberOutOfRange(BigInt::from(i))),
|
|
None => Err(self.expected(ExpectedKind::SignedInteger)),
|
|
}
|
|
}
|
|
|
|
/// Yields `Ok` if `self` is a [Value::SignedInteger] that fits in [i32];
|
|
/// otherwise, [Error::Expected] or [Error::NumberOutOfRange].
|
|
#[inline(always)]
|
|
pub fn to_i32(&self) -> Result<i32, Error> {
|
|
match self.as_i() {
|
|
Some(i) => i
|
|
.to_i32()
|
|
.ok_or_else(|| Error::NumberOutOfRange(BigInt::from(i))),
|
|
None => Err(self.expected(ExpectedKind::SignedInteger)),
|
|
}
|
|
}
|
|
|
|
/// Yields `Ok` if `self` is a [Value::SignedInteger] that fits in [u32];
|
|
/// otherwise, [Error::Expected] or [Error::NumberOutOfRange].
|
|
#[inline(always)]
|
|
pub fn to_u32(&self) -> Result<u32, Error> {
|
|
match self.as_u() {
|
|
Some(i) => i
|
|
.to_u32()
|
|
.ok_or_else(|| Error::NumberOutOfRange(BigInt::from(i))),
|
|
None => Err(self.expected(ExpectedKind::SignedInteger)),
|
|
}
|
|
}
|
|
|
|
/// Yields `Ok` if `self` is a [Value::SignedInteger] that fits in [i64];
|
|
/// otherwise, [Error::Expected] or [Error::NumberOutOfRange].
|
|
#[inline(always)]
|
|
pub fn to_i64(&self) -> Result<i64, Error> {
|
|
match self.as_i() {
|
|
Some(i) => i
|
|
.to_i64()
|
|
.ok_or_else(|| Error::NumberOutOfRange(BigInt::from(i))),
|
|
None => Err(self.expected(ExpectedKind::SignedInteger)),
|
|
}
|
|
}
|
|
|
|
/// Yields `Ok` if `self` is a [Value::SignedInteger] that fits in [u64];
|
|
/// otherwise, [Error::Expected] or [Error::NumberOutOfRange].
|
|
#[inline(always)]
|
|
pub fn to_u64(&self) -> Result<u64, Error> {
|
|
match self.as_u() {
|
|
Some(i) => i
|
|
.to_u64()
|
|
.ok_or_else(|| Error::NumberOutOfRange(BigInt::from(i))),
|
|
None => Err(self.expected(ExpectedKind::SignedInteger)),
|
|
}
|
|
}
|
|
|
|
/// Yields `Ok` if `self` is a [Value::SignedInteger] that fits in [i128];
|
|
/// otherwise, [Error::Expected] or [Error::NumberOutOfRange].
|
|
#[inline(always)]
|
|
pub fn to_i128(&self) -> Result<i128, Error> {
|
|
match self.as_i() {
|
|
Some(i) => i
|
|
.to_i128()
|
|
.ok_or_else(|| Error::NumberOutOfRange(BigInt::from(i))),
|
|
None => Err(self.expected(ExpectedKind::SignedInteger)),
|
|
}
|
|
}
|
|
|
|
/// Yields `Ok` if `self` is a [Value::SignedInteger] that fits in [u128];
|
|
/// otherwise, [Error::Expected] or [Error::NumberOutOfRange].
|
|
#[inline(always)]
|
|
pub fn to_u128(&self) -> Result<u128, Error> {
|
|
match self.as_u() {
|
|
Some(i) => i
|
|
.to_u128()
|
|
.ok_or_else(|| Error::NumberOutOfRange(BigInt::from(i))),
|
|
None => Err(self.expected(ExpectedKind::SignedInteger)),
|
|
}
|
|
}
|
|
|
|
/// Yields `Ok` if `self` is a [Value::SignedInteger] that fits in [isize];
|
|
/// otherwise, [Error::Expected] or [Error::NumberOutOfRange].
|
|
#[inline(always)]
|
|
pub fn to_isize(&self) -> Result<isize, Error> {
|
|
match self.as_i() {
|
|
Some(i) => i
|
|
.to_isize()
|
|
.ok_or_else(|| Error::NumberOutOfRange(BigInt::from(i))),
|
|
None => Err(self.expected(ExpectedKind::SignedInteger)),
|
|
}
|
|
}
|
|
|
|
/// Yields `Ok` if `self` is a [Value::SignedInteger] that fits in [usize];
|
|
/// otherwise, [Error::Expected] or [Error::NumberOutOfRange].
|
|
#[inline(always)]
|
|
pub fn to_usize(&self) -> Result<usize, Error> {
|
|
match self.as_u() {
|
|
Some(i) => i
|
|
.to_usize()
|
|
.ok_or_else(|| Error::NumberOutOfRange(BigInt::from(i))),
|
|
None => Err(self.expected(ExpectedKind::SignedInteger)),
|
|
}
|
|
}
|
|
|
|
/// Yields `Ok` if `self` is a record with label a symbol `UnicodeScalar` and single field
|
|
/// a SignedInteger that can represent a valid Unicode scalar value. Otherwise,
|
|
/// [Error::Expected] or [Error::InvalidUnicodeScalar]. otherwise, [Error::Expected] or
|
|
/// [Error::NumberOutOfRange].
|
|
#[inline(always)]
|
|
pub fn to_char(&self) -> Result<char, Error> {
|
|
let fs = self.to_simple_record("UnicodeScalar", Some(1))?;
|
|
let c = fs[0].value().to_u32()?;
|
|
char::try_from(c).map_err(|_| Error::InvalidUnicodeScalar(c))
|
|
}
|
|
|
|
/// True iff this is a [Value::String].
|
|
#[inline(always)]
|
|
pub fn is_string(&self) -> bool {
|
|
self.as_string().is_some()
|
|
}
|
|
|
|
/// Yields `Some` iff this is a [Value::String].
|
|
#[inline(always)]
|
|
pub fn as_string(&self) -> Option<&String> {
|
|
if let Value::String(s) = self {
|
|
Some(s)
|
|
} else {
|
|
None
|
|
}
|
|
}
|
|
|
|
/// Retrieve a mutable reference to the contained String value iff this is a [Value::String].
|
|
#[inline(always)]
|
|
pub fn as_string_mut(&mut self) -> Option<&mut String> {
|
|
if let Value::String(s) = self {
|
|
Some(s)
|
|
} else {
|
|
None
|
|
}
|
|
}
|
|
|
|
/// Consumes `self`, yielding a `String` iff `self` is a [Value::String].
|
|
#[inline(always)]
|
|
pub fn into_string(self) -> Option<String> {
|
|
match self {
|
|
Value::String(s) => Some(s),
|
|
_ => None,
|
|
}
|
|
}
|
|
|
|
/// Yields `Ok` iff this is a [Value::String]; else [Error::Expected].
|
|
#[inline(always)]
|
|
pub fn to_string(&self) -> Result<&String, Error> {
|
|
self.as_string()
|
|
.ok_or_else(|| self.expected(ExpectedKind::String))
|
|
}
|
|
|
|
/// Constructs a [Value::ByteString] from `v`.
|
|
#[inline(always)]
|
|
pub fn bytestring<'a, V: Into<Cow<'a, [u8]>>>(v: V) -> Self {
|
|
Value::ByteString(v.into().into_owned())
|
|
}
|
|
|
|
/// True iff this is a [Value::ByteString].
|
|
#[inline(always)]
|
|
pub fn is_bytestring(&self) -> bool {
|
|
self.as_bytestring().is_some()
|
|
}
|
|
|
|
/// Yields `Some` iff this is a [Value::ByteString].
|
|
#[inline(always)]
|
|
pub fn as_bytestring(&self) -> Option<&Vec<u8>> {
|
|
if let Value::ByteString(s) = self {
|
|
Some(s)
|
|
} else {
|
|
None
|
|
}
|
|
}
|
|
|
|
/// Retrieve a mutable reference to the contained bytes value iff this is a [Value::ByteString].
|
|
#[inline(always)]
|
|
pub fn as_bytestring_mut(&mut self) -> Option<&mut Vec<u8>> {
|
|
if let Value::ByteString(s) = self {
|
|
Some(s)
|
|
} else {
|
|
None
|
|
}
|
|
}
|
|
|
|
/// Consumes `self`, yielding a `Vec<u8>` iff `self` is a [Value::ByteString].
|
|
#[inline(always)]
|
|
pub fn into_bytestring(self) -> Option<Vec<u8>> {
|
|
match self {
|
|
Value::ByteString(bs) => Some(bs),
|
|
_ => None,
|
|
}
|
|
}
|
|
|
|
/// Yields `Ok` iff this is a [Value::ByteString]; else [Error::Expected].
|
|
#[inline(always)]
|
|
pub fn to_bytestring(&self) -> Result<&Vec<u8>, Error> {
|
|
self.as_bytestring()
|
|
.ok_or_else(|| self.expected(ExpectedKind::ByteString))
|
|
}
|
|
|
|
/// Constructs a [Value::Symbol] from `v`.
|
|
#[inline(always)]
|
|
pub fn symbol(s: &str) -> Value<N> {
|
|
Value::Symbol(s.to_string())
|
|
}
|
|
|
|
/// True iff this is a [Value::Symbol].
|
|
#[inline(always)]
|
|
pub fn is_symbol(&self) -> bool {
|
|
self.as_symbol().is_some()
|
|
}
|
|
|
|
/// Yields `Some` iff this is a [Value::Symbol].
|
|
#[inline(always)]
|
|
pub fn as_symbol(&self) -> Option<&String> {
|
|
if let Value::Symbol(s) = self {
|
|
Some(s)
|
|
} else {
|
|
None
|
|
}
|
|
}
|
|
|
|
/// Retrieve a mutable reference to the contained Symbol's string iff this is a [Value::Symbol].
|
|
#[inline(always)]
|
|
pub fn as_symbol_mut(&mut self) -> Option<&mut String> {
|
|
if let Value::Symbol(s) = self {
|
|
Some(s)
|
|
} else {
|
|
None
|
|
}
|
|
}
|
|
|
|
/// Consumes `self`, yielding a `String` iff `self` is a [Value::Symbol].
|
|
#[inline(always)]
|
|
pub fn into_symbol(self) -> Option<String> {
|
|
match self {
|
|
Value::Symbol(s) => Some(s),
|
|
_ => None,
|
|
}
|
|
}
|
|
|
|
/// Yields `Ok` iff this is a [Value::Symbol]; else [Error::Expected].
|
|
#[inline(always)]
|
|
pub fn to_symbol(&self) -> Result<&String, Error> {
|
|
self.as_symbol()
|
|
.ok_or_else(|| self.expected(ExpectedKind::Symbol))
|
|
}
|
|
|
|
/// Constructs a record with the given label and expected arity. The new record will
|
|
/// initially not have any fields, but will be allocated with capacity for `expected_arity`
|
|
/// fields.
|
|
#[inline(always)]
|
|
pub fn record(label: N, expected_arity: usize) -> Record<N> {
|
|
let mut v = Vec::with_capacity(expected_arity + 1);
|
|
v.push(label);
|
|
Record(v)
|
|
}
|
|
|
|
/// True iff this is a [Value::Record].
|
|
#[inline(always)]
|
|
pub fn is_record(&self) -> bool {
|
|
matches!(*self, Value::Record(_))
|
|
}
|
|
|
|
/// Yields `Some` iff this is a [Value::Record].
|
|
#[inline(always)]
|
|
pub fn as_record(&self, arity: Option<usize>) -> Option<&Record<N>> {
|
|
if let Value::Record(r) = self {
|
|
match arity {
|
|
Some(expected) if r.arity() == expected => Some(r),
|
|
Some(_other) => None,
|
|
None => Some(r),
|
|
}
|
|
} else {
|
|
None
|
|
}
|
|
}
|
|
|
|
/// Consumes `self`, yielding a `Record` iff `self` is a [Value::Record].
|
|
#[inline(always)]
|
|
pub fn into_record(self) -> Option<Record<N>> {
|
|
match self {
|
|
Value::Record(r) => Some(r),
|
|
_ => None,
|
|
}
|
|
}
|
|
|
|
/// Retrieve a mutable reference to the contained Record value iff this is a [Value::Record].
|
|
#[inline(always)]
|
|
pub fn as_record_mut(&mut self, arity: Option<usize>) -> Option<&mut Record<N>> {
|
|
if let Value::Record(r) = self {
|
|
match arity {
|
|
Some(expected) if r.arity() == expected => Some(r),
|
|
Some(_other) => None,
|
|
None => Some(r),
|
|
}
|
|
} else {
|
|
None
|
|
}
|
|
}
|
|
|
|
/// Yields `Ok` iff this is a [Value::Record]; else [Error::Expected].
|
|
#[inline(always)]
|
|
pub fn to_record(&self, arity: Option<usize>) -> Result<&Record<N>, Error> {
|
|
self.as_record(arity)
|
|
.ok_or_else(|| self.expected(ExpectedKind::Record(arity)))
|
|
}
|
|
|
|
/// Like [Self::record], but for the common case where the label is to be a `Symbol` with a
|
|
/// given text.
|
|
#[inline(always)]
|
|
pub fn simple_record(label: &str, expected_arity: usize) -> Record<N> {
|
|
Self::record(N::symbol(label), expected_arity)
|
|
}
|
|
|
|
/// Constructs a record with label a symbol with text `label`, and no fields.
|
|
#[inline(always)]
|
|
pub fn simple_record0(label: &str) -> Value<N> {
|
|
Self::simple_record(label, 0).finish()
|
|
}
|
|
|
|
/// Constructs a record with label a symbol with text `label`, and one field.
|
|
#[inline(always)]
|
|
pub fn simple_record1(label: &str, field: N) -> Value<N> {
|
|
let mut r = Self::simple_record(label, 1);
|
|
r.fields_vec_mut().push(field);
|
|
r.finish()
|
|
}
|
|
|
|
/// True iff `self` is a record with label a symbol with text `label` and arity matching
|
|
/// `arity`: any arity, if `arity == None`, or the specific `usize` concerned otherwise.
|
|
#[inline(always)]
|
|
pub fn is_simple_record(&self, label: &str, arity: Option<usize>) -> bool {
|
|
self.as_simple_record(label, arity).is_some()
|
|
}
|
|
|
|
/// Yields `Some` containing a reference to the record's fields iff
|
|
/// [`Self::is_simple_record`]`(label, arity)` returns true.
|
|
#[inline(always)]
|
|
pub fn as_simple_record(&self, label: &str, arity: Option<usize>) -> Option<&[N]> {
|
|
self.as_record(arity).and_then(|r| match r.label().value() {
|
|
Value::Symbol(s) if s == label => Some(r.fields()),
|
|
_ => None,
|
|
})
|
|
}
|
|
|
|
/// Like [Self::as_simple_record], but yields [Error::Expected] on failure.
|
|
#[inline(always)]
|
|
pub fn to_simple_record(&self, label: &str, arity: Option<usize>) -> Result<&[N], Error> {
|
|
self.as_simple_record(label, arity)
|
|
.ok_or_else(|| self.expected(ExpectedKind::SimpleRecord(label.to_owned(), arity)))
|
|
}
|
|
|
|
/// Serde's "option" type is incoded in Preserves as `<None>` or `<Some v>`.
|
|
#[inline(always)]
|
|
pub fn to_option(&self) -> Result<Option<&N>, Error> {
|
|
match self.as_simple_record("None", Some(0)) {
|
|
Some(_fs) => Ok(None),
|
|
None => match self.as_simple_record("Some", Some(1)) {
|
|
Some(fs) => Ok(Some(&fs[0])),
|
|
None => Err(self.expected(ExpectedKind::Option)),
|
|
},
|
|
}
|
|
}
|
|
|
|
/// True iff this is a [Value::Sequence].
|
|
#[inline(always)]
|
|
pub fn is_sequence(&self) -> bool {
|
|
self.as_sequence().is_some()
|
|
}
|
|
|
|
/// Yields `Some` iff this is a [Value::Sequence].
|
|
#[inline(always)]
|
|
pub fn as_sequence(&self) -> Option<&Vec<N>> {
|
|
if let Value::Sequence(s) = self {
|
|
Some(s)
|
|
} else {
|
|
None
|
|
}
|
|
}
|
|
|
|
/// Consumes `self`, yielding a [`Vec<N>`] iff `self` is a [Value::Sequence].
|
|
#[inline(always)]
|
|
pub fn into_sequence(self) -> Option<Vec<N>> {
|
|
match self {
|
|
Value::Sequence(s) => Some(s),
|
|
_ => None,
|
|
}
|
|
}
|
|
|
|
/// Retrieve a mutable reference to the contained [`Vec<N>`] iff this is a [Value::Sequence].
|
|
#[inline(always)]
|
|
pub fn as_sequence_mut(&mut self) -> Option<&mut Vec<N>> {
|
|
if let Value::Sequence(s) = self {
|
|
Some(s)
|
|
} else {
|
|
None
|
|
}
|
|
}
|
|
|
|
/// Yields `Ok` iff this is a [Value::Sequence]; else [Error::Expected].
|
|
#[inline(always)]
|
|
pub fn to_sequence(&self) -> Result<&Vec<N>, Error> {
|
|
self.as_sequence()
|
|
.ok_or_else(|| self.expected(ExpectedKind::Sequence))
|
|
}
|
|
|
|
/// True iff this is a [Value::Set].
|
|
#[inline(always)]
|
|
pub fn is_set(&self) -> bool {
|
|
self.as_set().is_some()
|
|
}
|
|
|
|
/// Yields `Some` iff this is a [Value::Set].
|
|
#[inline(always)]
|
|
pub fn as_set(&self) -> Option<&Set<N>> {
|
|
if let Value::Set(s) = self {
|
|
Some(s)
|
|
} else {
|
|
None
|
|
}
|
|
}
|
|
|
|
/// Consumes `self`, yielding a [`Set<N>`] iff `self` is a [Value::Set].
|
|
#[inline(always)]
|
|
pub fn into_set(self) -> Option<Set<N>> {
|
|
match self {
|
|
Value::Set(s) => Some(s),
|
|
_ => None,
|
|
}
|
|
}
|
|
|
|
/// Retrieve a mutable reference to the contained Set value iff this is a [Value::Set].
|
|
#[inline(always)]
|
|
pub fn as_set_mut(&mut self) -> Option<&mut Set<N>> {
|
|
if let Value::Set(s) = self {
|
|
Some(s)
|
|
} else {
|
|
None
|
|
}
|
|
}
|
|
|
|
/// Yields `Ok` iff this is a [Value::Set]; else [Error::Expected].
|
|
#[inline(always)]
|
|
pub fn to_set(&self) -> Result<&Set<N>, Error> {
|
|
self.as_set()
|
|
.ok_or_else(|| self.expected(ExpectedKind::Set))
|
|
}
|
|
|
|
/// True iff this is a [Value::Dictionary].
|
|
#[inline(always)]
|
|
pub fn is_dictionary(&self) -> bool {
|
|
self.as_dictionary().is_some()
|
|
}
|
|
|
|
/// Yields `Some` iff this is a [Value::Dictionary].
|
|
#[inline(always)]
|
|
pub fn as_dictionary(&self) -> Option<&Map<N, N>> {
|
|
if let Value::Dictionary(s) = self {
|
|
Some(s)
|
|
} else {
|
|
None
|
|
}
|
|
}
|
|
|
|
/// Consumes `self`, yielding a [`Map<N, N>`] iff `self` is a [Value::Dictionary].
|
|
#[inline(always)]
|
|
pub fn into_dictionary(self) -> Option<Map<N, N>> {
|
|
match self {
|
|
Value::Dictionary(s) => Some(s),
|
|
_ => None,
|
|
}
|
|
}
|
|
|
|
/// Retrieve a mutable reference to the contained Map value iff this is a [Value::Dictionary].
|
|
#[inline(always)]
|
|
pub fn as_dictionary_mut(&mut self) -> Option<&mut Map<N, N>> {
|
|
if let Value::Dictionary(s) = self {
|
|
Some(s)
|
|
} else {
|
|
None
|
|
}
|
|
}
|
|
|
|
/// Yields `Ok` iff this is a [Value::Dictionary]; else [Error::Expected].
|
|
#[inline(always)]
|
|
pub fn to_dictionary(&self) -> Result<&Map<N, N>, Error> {
|
|
self.as_dictionary()
|
|
.ok_or_else(|| self.expected(ExpectedKind::Dictionary))
|
|
}
|
|
|
|
/// True iff this is a [Value::Embedded].
|
|
#[inline(always)]
|
|
pub fn is_embedded(&self) -> bool {
|
|
self.as_embedded().is_some()
|
|
}
|
|
|
|
/// Yields `Some` iff this is a [Value::Embedded].
|
|
#[inline(always)]
|
|
pub fn as_embedded(&self) -> Option<&N::Embedded> {
|
|
if let Value::Embedded(d) = self {
|
|
Some(d)
|
|
} else {
|
|
None
|
|
}
|
|
}
|
|
|
|
/// Yields `Ok` iff this is a [Value::Embedded]; else [Error::Expected].
|
|
#[inline(always)]
|
|
pub fn to_embedded(&self) -> Result<&N::Embedded, Error> {
|
|
self.as_embedded()
|
|
.ok_or_else(|| self.expected(ExpectedKind::Embedded))
|
|
}
|
|
|
|
/// Yields a deep copy of `self` with all annotations (recursively) removed.
|
|
pub fn strip_annotations<M: NestedValue<Embedded = N::Embedded>>(&self) -> Value<M> {
|
|
match self {
|
|
Value::Boolean(b) => Value::Boolean(*b),
|
|
Value::Double(d) => Value::Double(d.clone()),
|
|
Value::SignedInteger(n) => Value::SignedInteger(n.clone()),
|
|
Value::String(s) => Value::String(s.clone()),
|
|
Value::ByteString(v) => Value::ByteString(v.clone()),
|
|
Value::Symbol(v) => Value::Symbol(v.clone()),
|
|
Value::Record(r) => Value::Record(Record(
|
|
r.fields_vec()
|
|
.iter()
|
|
.map(|a| a.strip_annotations())
|
|
.collect(),
|
|
)),
|
|
Value::Sequence(v) => {
|
|
Value::Sequence(v.iter().map(|a| a.strip_annotations()).collect())
|
|
}
|
|
Value::Set(v) => Value::Set(v.iter().map(|a| a.strip_annotations()).collect()),
|
|
Value::Dictionary(v) => Value::Dictionary(
|
|
v.iter()
|
|
.map(|(a, b)| (a.strip_annotations(), b.strip_annotations()))
|
|
.collect(),
|
|
),
|
|
Value::Embedded(d) => Value::Embedded(d.clone()),
|
|
}
|
|
}
|
|
|
|
/// Yields a deep copy of `self`, mapping embedded values to a new type via `f`.
|
|
pub fn copy_via<M: NestedValue, F, Err>(&self, f: &mut F) -> Result<Value<M>, Err>
|
|
where
|
|
F: FnMut(&N::Embedded) -> Result<Value<M>, Err>,
|
|
{
|
|
Ok(match self {
|
|
Value::Boolean(b) => Value::Boolean(*b),
|
|
Value::Double(d) => Value::Double(d.clone()),
|
|
Value::SignedInteger(n) => Value::SignedInteger(n.clone()),
|
|
Value::String(s) => Value::String(s.clone()),
|
|
Value::ByteString(v) => Value::ByteString(v.clone()),
|
|
Value::Symbol(v) => Value::Symbol(v.clone()),
|
|
Value::Record(r) => Value::Record(Record(
|
|
r.fields_vec()
|
|
.iter()
|
|
.map(|a| a.copy_via(f))
|
|
.collect::<Result<Vec<_>, _>>()?,
|
|
)),
|
|
Value::Sequence(v) => Value::Sequence(
|
|
v.iter()
|
|
.map(|a| a.copy_via(f))
|
|
.collect::<Result<Vec<_>, _>>()?,
|
|
),
|
|
Value::Set(v) => Value::Set(
|
|
v.iter()
|
|
.map(|a| a.copy_via(f))
|
|
.collect::<Result<Set<_>, _>>()?,
|
|
),
|
|
Value::Dictionary(v) => Value::Dictionary(
|
|
v.iter()
|
|
.map(|(a, b)| Ok((a.copy_via(f)?, b.copy_via(f)?)))
|
|
.collect::<Result<Map<_, _>, _>>()?,
|
|
),
|
|
Value::Embedded(d) => f(d)?,
|
|
})
|
|
}
|
|
|
|
/// Calls `f` once for each (recursively) embedded value in `self`.
|
|
pub fn foreach_embedded<F, Err>(&self, f: &mut F) -> Result<(), Err>
|
|
where
|
|
F: FnMut(&N::Embedded) -> Result<(), Err>,
|
|
{
|
|
match self {
|
|
Value::Boolean(_)
|
|
| Value::Double(_)
|
|
| Value::SignedInteger(_)
|
|
| Value::String(_)
|
|
| Value::ByteString(_)
|
|
| Value::Symbol(_) => Ok(()),
|
|
Value::Record(r) => Ok(for v in r.fields_vec() {
|
|
v.foreach_embedded(f)?
|
|
}),
|
|
Value::Sequence(vs) => Ok(for v in vs {
|
|
v.foreach_embedded(f)?
|
|
}),
|
|
Value::Set(vs) => Ok(for v in vs {
|
|
v.foreach_embedded(f)?
|
|
}),
|
|
Value::Dictionary(d) => Ok(for (k, v) in d {
|
|
k.foreach_embedded(f)?;
|
|
v.foreach_embedded(f)?;
|
|
}),
|
|
Value::Embedded(d) => f(d),
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<N: NestedValue> Index<usize> for Value<N> {
|
|
type Output = N;
|
|
|
|
#[inline(always)]
|
|
fn index(&self, i: usize) -> &Self::Output {
|
|
&self.as_sequence().unwrap()[i]
|
|
}
|
|
}
|
|
|
|
impl<N: NestedValue> IndexMut<usize> for Value<N> {
|
|
#[inline(always)]
|
|
fn index_mut(&mut self, i: usize) -> &mut Self::Output {
|
|
&mut self.as_sequence_mut().unwrap()[i]
|
|
}
|
|
}
|
|
|
|
impl<N: NestedValue> Index<&N> for Value<N> {
|
|
type Output = N;
|
|
|
|
#[inline(always)]
|
|
fn index(&self, i: &N) -> &Self::Output {
|
|
&(*self.as_dictionary().unwrap())[i]
|
|
}
|
|
}
|
|
|
|
//---------------------------------------------------------------------------
|
|
// This part is a terrible hack
|
|
|
|
#[doc(hidden)]
|
|
impl serde::Serialize for UnwrappedIOValue {
|
|
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
|
|
where
|
|
S: serde::Serializer,
|
|
{
|
|
super::magic::output_value(serializer, self.clone().wrap())
|
|
}
|
|
}
|
|
|
|
#[doc(hidden)]
|
|
impl<'de> serde::Deserialize<'de> for UnwrappedIOValue {
|
|
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
|
|
where
|
|
D: serde::Deserializer<'de>,
|
|
{
|
|
Ok(super::magic::input_value::<'de, D>(deserializer)?.value_owned())
|
|
}
|
|
}
|
|
|
|
//---------------------------------------------------------------------------
|
|
|
|
/// Representation of a collection of annotations to be attached to a [Value] by way of an
|
|
/// implementation of trait [NestedValue].
|
|
|
|
#[derive(Clone)]
|
|
pub struct Annotations<N: NestedValue>(
|
|
/// The complex-seeming `Option<Box<Vec<N>>>` is used to save memory, since a `Box` is
|
|
/// smaller than a `Vec`.
|
|
Option<Box<Vec<N>>>,
|
|
);
|
|
|
|
impl<N: NestedValue> Annotations<N> {
|
|
/// Yield the empty [Annotations] sequence.
|
|
#[inline(always)]
|
|
pub fn empty() -> Self {
|
|
Annotations(None)
|
|
}
|
|
|
|
/// Yield [Annotations] from a vector of values.
|
|
#[inline(always)]
|
|
pub fn new(anns: Option<Vec<N>>) -> Self {
|
|
Annotations(anns.map(Box::new))
|
|
}
|
|
|
|
/// Extract carried annotations, if there are any.
|
|
#[inline(always)]
|
|
pub fn maybe_slice(&self) -> Option<&[N]> {
|
|
match &self.0 {
|
|
None => None,
|
|
Some(b) => Some(&b[..]),
|
|
}
|
|
}
|
|
|
|
/// Extract carried annotations, supplying an empty slice if there are none.
|
|
#[inline(always)]
|
|
pub fn slice(&self) -> &[N] {
|
|
self.maybe_slice().unwrap_or(&[])
|
|
}
|
|
|
|
/// Produce a fresh [Vec] of the carried annotations.
|
|
#[inline(always)]
|
|
pub fn to_vec(self) -> Vec<N> {
|
|
use std::ops::DerefMut;
|
|
self.0
|
|
.map(|mut b| std::mem::take(b.deref_mut()))
|
|
.unwrap_or_default()
|
|
}
|
|
|
|
/// Allows in-place updating of the collection of carried annotations.
|
|
pub fn modify<F>(&mut self, f: F) -> &mut Self
|
|
where
|
|
F: FnOnce(&mut Vec<N>),
|
|
{
|
|
match &mut self.0 {
|
|
None => {
|
|
let mut v = Vec::new();
|
|
f(&mut v);
|
|
if !v.is_empty() {
|
|
self.0 = Some(Box::new(v));
|
|
}
|
|
}
|
|
Some(b) => {
|
|
use std::ops::DerefMut;
|
|
f(b.deref_mut());
|
|
if b.is_empty() {
|
|
self.0 = None;
|
|
}
|
|
}
|
|
}
|
|
self
|
|
}
|
|
|
|
/// Yields a deep copy of `self`, mapping embedded values to a new type via `f`.
|
|
pub fn copy_via<M: NestedValue, F, Err>(&self, f: &mut F) -> Result<Annotations<M>, Err>
|
|
where
|
|
F: FnMut(&N::Embedded) -> Result<Value<M>, Err>,
|
|
{
|
|
Ok(match &self.0 {
|
|
None => Annotations(None),
|
|
Some(b) => Annotations(Some(Box::new(
|
|
b.iter()
|
|
.map(|a| a.copy_via(f))
|
|
.collect::<Result<Vec<_>, _>>()?,
|
|
))),
|
|
})
|
|
}
|
|
}
|
|
|
|
/// A possibly-annotated Value, with annotations (themselves
|
|
/// possibly-annotated) in order of appearance.
|
|
#[derive(Clone)]
|
|
pub struct AnnotatedValue<N: NestedValue>(pub Annotations<N>, pub Value<N>);
|
|
|
|
impl<N: NestedValue> AnnotatedValue<N> {
|
|
#[inline(always)]
|
|
fn new(anns: Annotations<N>, value: Value<N>) -> Self {
|
|
AnnotatedValue(anns, value)
|
|
}
|
|
}
|
|
|
|
impl<N: NestedValue> PartialEq for AnnotatedValue<N> {
|
|
#[inline(always)]
|
|
fn eq(&self, other: &Self) -> bool {
|
|
self.1.eq(&other.1)
|
|
}
|
|
}
|
|
|
|
impl<N: NestedValue> Eq for AnnotatedValue<N> {}
|
|
|
|
impl<N: NestedValue> Hash for AnnotatedValue<N> {
|
|
#[inline(always)]
|
|
fn hash<H: Hasher>(&self, state: &mut H) {
|
|
self.1.hash(state);
|
|
}
|
|
}
|
|
|
|
impl<N: NestedValue> PartialOrd for AnnotatedValue<N> {
|
|
#[inline(always)]
|
|
fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
|
|
Some(self.cmp(other))
|
|
}
|
|
}
|
|
|
|
impl<N: NestedValue> Ord for AnnotatedValue<N> {
|
|
#[inline(always)]
|
|
fn cmp(&self, other: &Self) -> Ordering {
|
|
self.1.cmp(&other.1)
|
|
}
|
|
}
|
|
|
|
//---------------------------------------------------------------------------
|
|
|
|
/// A simple tree representation without any reference counting.
|
|
#[derive(Clone, PartialEq, Eq, Hash, PartialOrd, Ord)]
|
|
pub struct PlainValue<D: Embeddable>(AnnotatedValue<PlainValue<D>>);
|
|
|
|
impl<D: Embeddable> PlainValue<D> {
|
|
#[inline(always)]
|
|
pub fn annotations_mut(&mut self) -> &mut Annotations<Self> {
|
|
&mut (self.0).0
|
|
}
|
|
|
|
#[inline(always)]
|
|
pub fn value_mut(&mut self) -> &mut Value<Self> {
|
|
&mut (self.0).1
|
|
}
|
|
}
|
|
|
|
impl<D: Embeddable> NestedValue for PlainValue<D> {
|
|
type Embedded = D;
|
|
|
|
#[inline(always)]
|
|
fn wrap(anns: Annotations<Self>, v: Value<Self>) -> Self {
|
|
PlainValue(AnnotatedValue::new(anns, v))
|
|
}
|
|
|
|
#[inline(always)]
|
|
fn annotations(&self) -> &Annotations<Self> {
|
|
&(self.0).0
|
|
}
|
|
|
|
#[inline(always)]
|
|
fn value(&self) -> &Value<Self> {
|
|
&(self.0).1
|
|
}
|
|
|
|
#[inline(always)]
|
|
fn pieces(self) -> (Annotations<Self>, Value<Self>) {
|
|
let AnnotatedValue(anns, v) = self.0;
|
|
(anns, v)
|
|
}
|
|
|
|
#[inline(always)]
|
|
fn value_owned(self) -> Value<Self> {
|
|
(self.0).1
|
|
}
|
|
}
|
|
|
|
impl<D: Embeddable> Debug for PlainValue<D> {
|
|
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
|
|
self.debug_fmt(f)
|
|
}
|
|
}
|
|
|
|
//---------------------------------------------------------------------------
|
|
|
|
use std::rc::Rc;
|
|
|
|
/// A representation of a Preserves Value using [Rc] for reference-counting of subvalues.
|
|
#[derive(Clone, PartialEq, Eq, Hash, PartialOrd, Ord)]
|
|
pub struct RcValue<D: Embeddable>(Rc<AnnotatedValue<RcValue<D>>>);
|
|
|
|
impl<D: Embeddable> NestedValue for RcValue<D> {
|
|
type Embedded = D;
|
|
|
|
#[inline(always)]
|
|
fn wrap(anns: Annotations<Self>, v: Value<Self>) -> Self {
|
|
RcValue(Rc::new(AnnotatedValue::new(anns, v)))
|
|
}
|
|
|
|
#[inline(always)]
|
|
fn annotations(&self) -> &Annotations<Self> {
|
|
&(self.0).0
|
|
}
|
|
|
|
#[inline(always)]
|
|
fn value(&self) -> &Value<Self> {
|
|
&(self.0).1
|
|
}
|
|
|
|
#[inline(always)]
|
|
fn pieces(self) -> (Annotations<Self>, Value<Self>) {
|
|
match Rc::try_unwrap(self.0) {
|
|
Ok(AnnotatedValue(anns, v)) => (anns, v),
|
|
Err(r) => (r.0.clone(), r.1.clone()),
|
|
}
|
|
}
|
|
|
|
#[inline(always)]
|
|
fn value_owned(self) -> Value<Self> {
|
|
Rc::try_unwrap(self.0)
|
|
.unwrap_or_else(|_| panic!("value_owned on RcValue with refcount greater than one"))
|
|
.1
|
|
}
|
|
}
|
|
|
|
impl<D: Embeddable> Debug for RcValue<D> {
|
|
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
|
|
self.debug_fmt(f)
|
|
}
|
|
}
|
|
|
|
//---------------------------------------------------------------------------
|
|
|
|
/// A representation of a Preserves Value using [Arc] for reference-counting of subvalues.
|
|
#[derive(Clone, PartialEq, Eq, Hash, PartialOrd, Ord)]
|
|
pub struct ArcValue<D: Embeddable>(Arc<AnnotatedValue<ArcValue<D>>>);
|
|
|
|
impl<D: Embeddable> NestedValue for ArcValue<D> {
|
|
type Embedded = D;
|
|
|
|
#[inline(always)]
|
|
fn wrap(anns: Annotations<Self>, v: Value<Self>) -> Self {
|
|
ArcValue(Arc::new(AnnotatedValue::new(anns, v)))
|
|
}
|
|
|
|
#[inline(always)]
|
|
fn annotations(&self) -> &Annotations<Self> {
|
|
&(self.0).0
|
|
}
|
|
|
|
#[inline(always)]
|
|
fn value(&self) -> &Value<Self> {
|
|
&(self.0).1
|
|
}
|
|
|
|
#[inline(always)]
|
|
fn pieces(self) -> (Annotations<Self>, Value<Self>) {
|
|
match Arc::try_unwrap(self.0) {
|
|
Ok(AnnotatedValue(anns, v)) => (anns, v),
|
|
Err(r) => (r.0.clone(), r.1.clone()),
|
|
}
|
|
}
|
|
|
|
#[inline(always)]
|
|
fn value_owned(self) -> Value<Self> {
|
|
match Arc::try_unwrap(self.0) {
|
|
Ok(AnnotatedValue(_anns, v)) => v,
|
|
Err(r) => r.1.clone(),
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<D: Embeddable> Debug for ArcValue<D> {
|
|
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
|
|
self.debug_fmt(f)
|
|
}
|
|
}
|
|
|
|
//---------------------------------------------------------------------------
|
|
|
|
/// A representation of a Preserves Value using [Arc] for reference-counting of subvalues and
|
|
/// having [IOValue] as [NestedValue::Embedded].
|
|
#[derive(Clone, PartialEq, Eq, Hash, PartialOrd, Ord)]
|
|
pub struct IOValue(Arc<AnnotatedValue<IOValue>>);
|
|
pub type UnwrappedIOValue = Value<IOValue>;
|
|
|
|
impl Domain for IOValue {
|
|
fn debug_encode<W: Writer>(&self, w: &mut W) -> io::Result<()> {
|
|
w.write(&mut IOValueDomainCodec, self)
|
|
}
|
|
}
|
|
|
|
impl NestedValue for IOValue {
|
|
type Embedded = Self;
|
|
|
|
#[inline(always)]
|
|
fn wrap(anns: Annotations<Self>, v: Value<Self>) -> Self {
|
|
IOValue(Arc::new(AnnotatedValue::new(anns, v)))
|
|
}
|
|
|
|
#[inline(always)]
|
|
fn annotations(&self) -> &Annotations<Self> {
|
|
&(self.0).0
|
|
}
|
|
|
|
#[inline(always)]
|
|
fn value(&self) -> &Value<Self> {
|
|
&(self.0).1
|
|
}
|
|
|
|
#[inline(always)]
|
|
fn pieces(self) -> (Annotations<Self>, Value<Self>) {
|
|
match Arc::try_unwrap(self.0) {
|
|
Ok(AnnotatedValue(anns, v)) => (anns, v),
|
|
Err(r) => (r.0.clone(), r.1.clone()),
|
|
}
|
|
}
|
|
|
|
#[inline(always)]
|
|
fn value_owned(self) -> Value<Self> {
|
|
match Arc::try_unwrap(self.0) {
|
|
Ok(AnnotatedValue(_anns, v)) => v,
|
|
Err(r) => r.1.clone(),
|
|
}
|
|
}
|
|
}
|
|
|
|
impl Debug for IOValue {
|
|
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
|
|
self.debug_fmt(f)
|
|
}
|
|
}
|
|
|
|
impl std::str::FromStr for IOValue {
|
|
type Err = io::Error;
|
|
fn from_str(s: &str) -> Result<Self, Self::Err> {
|
|
text::annotated_iovalue_from_str(s)
|
|
}
|
|
}
|
|
|
|
impl serde::Serialize for IOValue {
|
|
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
|
|
where
|
|
S: serde::Serializer,
|
|
{
|
|
super::magic::output_value(serializer, self.clone())
|
|
}
|
|
}
|
|
|
|
impl<'de> serde::Deserialize<'de> for IOValue {
|
|
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
|
|
where
|
|
D: serde::Deserializer<'de>,
|
|
{
|
|
super::magic::input_value(deserializer)
|
|
}
|
|
}
|
|
|
|
//---------------------------------------------------------------------------
|
|
|
|
/// A "dummy" value that has no structure at all.
|
|
#[derive(Clone, PartialEq, Eq, Hash, PartialOrd, Ord)]
|
|
pub struct DummyValue<D: Embeddable>(AnnotatedValue<DummyValue<D>>);
|
|
|
|
impl<D: Embeddable> Debug for DummyValue<D> {
|
|
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
|
|
f.write_str("<>")
|
|
}
|
|
}
|
|
|
|
impl<D: Embeddable> DummyValue<D> {
|
|
#[inline(always)]
|
|
pub fn new() -> Self {
|
|
DummyValue(AnnotatedValue::new(
|
|
Annotations::empty(),
|
|
Value::Boolean(false),
|
|
))
|
|
}
|
|
}
|
|
|
|
impl<D: Embeddable> NestedValue for DummyValue<D> {
|
|
type Embedded = D;
|
|
|
|
#[inline(always)]
|
|
fn wrap(_anns: Annotations<Self>, _v: Value<Self>) -> Self {
|
|
DummyValue::new()
|
|
}
|
|
|
|
#[inline(always)]
|
|
fn annotations(&self) -> &Annotations<Self> {
|
|
&self.0 .0
|
|
}
|
|
|
|
#[inline(always)]
|
|
fn value(&self) -> &Value<Self> {
|
|
&self.0 .1
|
|
}
|
|
|
|
#[inline(always)]
|
|
fn pieces(self) -> (Annotations<Self>, Value<Self>) {
|
|
(self.0 .0, self.0 .1)
|
|
}
|
|
|
|
#[inline(always)]
|
|
fn value_owned(self) -> Value<Self> {
|
|
self.0 .1
|
|
}
|
|
}
|
|
|
|
//---------------------------------------------------------------------------
|
|
|
|
#[doc(hidden)]
|
|
// https://stackoverflow.com/questions/34304593/counting-length-of-repetition-in-macro/34324856
|
|
#[macro_export]
|
|
//#[allow(unused_macros)]
|
|
macro_rules! count__ {
|
|
() => (0usize);
|
|
( $x:tt $($xs:tt)* ) => (1usize + $crate::count__!($($xs)*));
|
|
}
|
|
|
|
/// Convenience syntax for efficiently constructing Preserves
|
|
/// [record][crate::value::Value::record] values.
|
|
#[macro_export]
|
|
macro_rules! rec {
|
|
( $label:expr $(, $item:expr)* ) => {
|
|
{
|
|
let mut r__ = $crate::value::Value::record($label, $crate::count__!($($item)*));
|
|
$(r__.fields_vec_mut().push($item);)*
|
|
r__.finish().wrap()
|
|
}
|
|
}
|
|
}
|