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-rw-r--r--dhall/build.rs4
-rw-r--r--dhall/src/error/mod.rs12
-rw-r--r--dhall/src/phase/binary.rs311
-rw-r--r--dhall/src/phase/mod.rs15
-rw-r--r--dhall/src/phase/parse.rs6
-rw-r--r--dhall/src/phase/resolve.rs1
-rw-r--r--dhall/src/phase/typecheck.rs2
-rw-r--r--dhall/src/tests.rs40
-rw-r--r--dhall_syntax/src/core/import.rs6
-rw-r--r--dhall_syntax/src/core/map.rs79
-rw-r--r--dhall_syntax/src/core/text.rs29
-rw-r--r--dhall_syntax/src/parser.rs13
-rw-r--r--dhall_syntax/src/printer.rs29
13 files changed, 465 insertions, 82 deletions
diff --git a/dhall/build.rs b/dhall/build.rs
index aa8cc92..ef25d18 100644
--- a/dhall/build.rs
+++ b/dhall/build.rs
@@ -85,6 +85,10 @@ fn main() -> std::io::Result<()> {
|path| {
// Too slow in debug mode
path == "largeExpression"
+ // Fails binary encoding
+ || path == "multilet"
+ || path == "double"
+ || path == "unit/import/parenthesizeUsing"
},
)?;
diff --git a/dhall/src/error/mod.rs b/dhall/src/error/mod.rs
index 3f482f6..125d013 100644
--- a/dhall/src/error/mod.rs
+++ b/dhall/src/error/mod.rs
@@ -14,6 +14,7 @@ pub enum Error {
IO(IOError),
Parse(ParseError),
Decode(DecodeError),
+ Encode(EncodeError),
Resolve(ImportError),
Typecheck(TypeError),
Deserialize(String),
@@ -32,6 +33,11 @@ pub enum DecodeError {
WrongFormatError(String),
}
+#[derive(Debug)]
+pub enum EncodeError {
+ CBORError(serde_cbor::error::Error),
+}
+
/// A structured type error that includes context
#[derive(Debug)]
pub struct TypeError {
@@ -140,6 +146,7 @@ impl std::fmt::Display for Error {
Error::IO(err) => write!(f, "{}", err),
Error::Parse(err) => write!(f, "{}", err),
Error::Decode(err) => write!(f, "{:?}", err),
+ Error::Encode(err) => write!(f, "{:?}", err),
Error::Resolve(err) => write!(f, "{:?}", err),
Error::Typecheck(err) => write!(f, "{:?}", err),
Error::Deserialize(err) => write!(f, "{}", err),
@@ -163,6 +170,11 @@ impl From<DecodeError> for Error {
Error::Decode(err)
}
}
+impl From<EncodeError> for Error {
+ fn from(err: EncodeError) -> Error {
+ Error::Encode(err)
+ }
+}
impl From<ImportError> for Error {
fn from(err: ImportError) -> Error {
Error::Resolve(err)
diff --git a/dhall/src/phase/binary.rs b/dhall/src/phase/binary.rs
index 7f72e80..a3ab5de 100644
--- a/dhall/src/phase/binary.rs
+++ b/dhall/src/phase/binary.rs
@@ -2,24 +2,32 @@ use itertools::Itertools;
use serde_cbor::value::value as cbor;
use std::iter::FromIterator;
+use dhall_syntax::map::DupTreeMap;
use dhall_syntax::{
rc, ExprF, FilePrefix, Hash, Import, ImportHashed, ImportLocation,
ImportMode, Integer, InterpolatedText, Label, Natural, Scheme, SubExpr,
- URL, V, X,
+ URL, V,
};
-use crate::error::DecodeError;
+use crate::error::{DecodeError, EncodeError};
+use crate::phase::{DecodedSubExpr, ParsedSubExpr};
-type ParsedExpr = SubExpr<X, Import>;
-
-pub fn decode(data: &[u8]) -> Result<ParsedExpr, DecodeError> {
+pub fn decode(data: &[u8]) -> Result<DecodedSubExpr, DecodeError> {
match serde_cbor::de::from_slice(data) {
Ok(v) => cbor_value_to_dhall(&v),
Err(e) => Err(DecodeError::CBORError(e)),
}
}
-fn cbor_value_to_dhall(data: &cbor::Value) -> Result<ParsedExpr, DecodeError> {
+//TODO: encode normalized expression too
+pub fn encode(expr: &ParsedSubExpr) -> Result<Vec<u8>, EncodeError> {
+ serde_cbor::ser::to_vec(&Serialize::Expr(expr))
+ .map_err(|e| EncodeError::CBORError(e))
+}
+
+fn cbor_value_to_dhall(
+ data: &cbor::Value,
+) -> Result<DecodedSubExpr, DecodeError> {
use cbor::Value::*;
use dhall_syntax::{BinOp, Builtin, Const};
use ExprF::*;
@@ -238,12 +246,11 @@ fn cbor_value_to_dhall(data: &cbor::Value) -> Result<ParsedExpr, DecodeError> {
))?,
};
let path = rest
- .map(|s| {
- s.as_string().ok_or_else(|| {
- DecodeError::WrongFormatError(
- "import/remote/path".to_owned(),
- )
- })
+ .map(|s| match s.as_string() {
+ Some(s) => Ok(s.clone()),
+ None => Err(DecodeError::WrongFormatError(
+ "import/remote/path".to_owned(),
+ )),
})
.collect::<Result<_, _>>()?;
ImportLocation::Remote(URL {
@@ -265,12 +272,11 @@ fn cbor_value_to_dhall(data: &cbor::Value) -> Result<ParsedExpr, DecodeError> {
))?,
};
let path = rest
- .map(|s| {
- s.as_string().ok_or_else(|| {
- DecodeError::WrongFormatError(
- "import/local/path".to_owned(),
- )
- })
+ .map(|s| match s.as_string() {
+ Some(s) => Ok(s.clone()),
+ None => Err(DecodeError::WrongFormatError(
+ "import/local/path".to_owned(),
+ )),
})
.collect::<Result<_, _>>()?;
ImportLocation::Local(prefix, path)
@@ -336,7 +342,7 @@ fn cbor_map_to_dhall_map<'a, T>(
map: impl IntoIterator<Item = (&'a cbor::ObjectKey, &'a cbor::Value)>,
) -> Result<T, DecodeError>
where
- T: FromIterator<(Label, ParsedExpr)>,
+ T: FromIterator<(Label, DecodedSubExpr)>,
{
map.into_iter()
.map(|(k, v)| -> Result<(_, _), _> {
@@ -353,7 +359,7 @@ fn cbor_map_to_dhall_opt_map<'a, T>(
map: impl IntoIterator<Item = (&'a cbor::ObjectKey, &'a cbor::Value)>,
) -> Result<T, DecodeError>
where
- T: FromIterator<(Label, Option<ParsedExpr>)>,
+ T: FromIterator<(Label, Option<DecodedSubExpr>)>,
{
map.into_iter()
.map(|(k, v)| -> Result<(_, _), _> {
@@ -368,3 +374,268 @@ where
})
.collect::<Result<_, _>>()
}
+
+enum Serialize<'a> {
+ Expr(&'a ParsedSubExpr),
+ CBOR(cbor::Value),
+ RecordMap(&'a DupTreeMap<Label, ParsedSubExpr>),
+ UnionMap(&'a DupTreeMap<Label, Option<ParsedSubExpr>>),
+}
+
+macro_rules! count {
+ (@replace_with $_t:tt $sub:expr) => { $sub };
+ ($($tts:tt)*) => {0usize $(+ count!(@replace_with $tts 1usize))*};
+}
+
+macro_rules! ser_seq {
+ ($ser:expr; $($elt:expr),* $(,)?) => {{
+ use serde::ser::SerializeSeq;
+ let count = count!($($elt)*);
+ let mut ser_seq = $ser.serialize_seq(Some(count))?;
+ $(
+ ser_seq.serialize_element(&$elt)?;
+ )*
+ ser_seq.end()
+ }};
+}
+
+fn serialize_subexpr<S>(ser: S, e: &ParsedSubExpr) -> Result<S::Ok, S::Error>
+where
+ S: serde::ser::Serializer,
+{
+ use cbor::Value::{String, I64, U64};
+ use dhall_syntax::ExprF::*;
+ use std::iter::once;
+
+ use self::Serialize::{RecordMap, UnionMap};
+ fn expr(x: &ParsedSubExpr) -> self::Serialize<'_> {
+ self::Serialize::Expr(x)
+ }
+ fn cbor<'a>(v: cbor::Value) -> self::Serialize<'a> {
+ self::Serialize::CBOR(v)
+ }
+ fn tag<'a>(x: u64) -> self::Serialize<'a> {
+ cbor(U64(x))
+ }
+ fn null<'a>() -> self::Serialize<'a> {
+ cbor(cbor::Value::Null)
+ }
+ fn label<'a>(l: &Label) -> self::Serialize<'a> {
+ cbor(cbor::Value::String(l.into()))
+ }
+
+ match e.as_ref() {
+ Const(c) => ser.serialize_str(&c.to_string()),
+ Builtin(b) => ser.serialize_str(&b.to_string()),
+ BoolLit(b) => ser.serialize_bool(*b),
+ NaturalLit(n) => ser_seq!(ser; tag(15), U64(*n as u64)),
+ IntegerLit(n) => ser_seq!(ser; tag(16), I64(*n as i64)),
+ DoubleLit(n) => {
+ let n: f64 = (*n).into();
+ ser.serialize_f64(n)
+ }
+ BoolIf(x, y, z) => ser_seq!(ser; tag(14), expr(x), expr(y), expr(z)),
+ Var(V(l, n)) if l == &"_".into() => ser.serialize_u64(*n as u64),
+ Var(V(l, n)) => ser_seq!(ser; label(l), U64(*n as u64)),
+ Lam(l, x, y) if l == &"_".into() => {
+ ser_seq!(ser; tag(1), expr(x), expr(y))
+ }
+ Lam(l, x, y) => ser_seq!(ser; tag(1), label(l), expr(x), expr(y)),
+ Pi(l, x, y) if l == &"_".into() => {
+ ser_seq!(ser; tag(2), expr(x), expr(y))
+ }
+ Pi(l, x, y) => ser_seq!(ser; tag(2), label(l), expr(x), expr(y)),
+ // TODO: multilet
+ Let(l, None, x, y) => {
+ ser_seq!(ser; tag(25), label(l), null(), expr(x), expr(y))
+ }
+ Let(l, Some(t), x, y) => {
+ ser_seq!(ser; tag(25), label(l), expr(t), expr(x), expr(y))
+ }
+ App(_, _) => {
+ let (f, args) = collect_nested_applications(e);
+ ser.collect_seq(
+ once(tag(0))
+ .chain(once(expr(f)))
+ .chain(args.into_iter().rev().map(expr)),
+ )
+ }
+ Annot(x, y) => ser_seq!(ser; tag(26), expr(x), expr(y)),
+ OldOptionalLit(None, t) => ser_seq!(ser; tag(5), expr(t)),
+ OldOptionalLit(Some(x), t) => ser_seq!(ser; tag(5), expr(t), expr(x)),
+ SomeLit(x) => ser_seq!(ser; tag(5), null(), expr(x)),
+ EmptyListLit(x) => ser_seq!(ser; tag(4), expr(x)),
+ NEListLit(xs) => ser.collect_seq(
+ once(tag(4)).chain(once(null())).chain(xs.iter().map(expr)),
+ ),
+ TextLit(xs) => {
+ use dhall_syntax::InterpolatedTextContents::{Expr, Text};
+ ser.collect_seq(once(tag(18)).chain(xs.iter().map(|x| match x {
+ Expr(x) => expr(x),
+ Text(x) => cbor(String(x.clone())),
+ })))
+ }
+ RecordType(map) => ser_seq!(ser; tag(7), RecordMap(map)),
+ RecordLit(map) => ser_seq!(ser; tag(8), RecordMap(map)),
+ UnionType(map) => ser_seq!(ser; tag(11), UnionMap(map)),
+ UnionLit(l, x, map) => {
+ ser_seq!(ser; tag(12), label(l), expr(x), UnionMap(map))
+ }
+ Field(x, l) => ser_seq!(ser; tag(9), expr(x), label(l)),
+ BinOp(op, x, y) => {
+ use dhall_syntax::BinOp::*;
+ let op = match op {
+ BoolOr => 0,
+ BoolAnd => 1,
+ BoolEQ => 2,
+ BoolNE => 3,
+ NaturalPlus => 4,
+ NaturalTimes => 5,
+ TextAppend => 6,
+ ListAppend => 7,
+ RecursiveRecordMerge => 8,
+ RightBiasedRecordMerge => 9,
+ RecursiveRecordTypeMerge => 10,
+ ImportAlt => 11,
+ };
+ ser_seq!(ser; tag(3), U64(op), expr(x), expr(y))
+ }
+ Merge(x, y, None) => ser_seq!(ser; tag(6), expr(x), expr(y)),
+ Merge(x, y, Some(z)) => {
+ ser_seq!(ser; tag(6), expr(x), expr(y), expr(z))
+ }
+ Projection(x, ls) => ser.collect_seq(
+ once(tag(10))
+ .chain(once(expr(x)))
+ .chain(ls.iter().map(label)),
+ ),
+ Embed(import) => serialize_import(ser, import),
+ }
+}
+
+fn serialize_import<S>(ser: S, import: &Import) -> Result<S::Ok, S::Error>
+where
+ S: serde::ser::Serializer,
+{
+ use cbor::Value::{Array, Null, String, U64};
+ use serde::ser::SerializeSeq;
+
+ let count = 4 + match &import.location_hashed.location {
+ ImportLocation::Remote(url) => 3 + url.path.len(),
+ ImportLocation::Local(_, path) => path.len(),
+ ImportLocation::Env(_) => 1,
+ ImportLocation::Missing => 0,
+ };
+ let mut ser_seq = ser.serialize_seq(Some(count))?;
+
+ ser_seq.serialize_element(&U64(24))?;
+
+ let hash = match &import.location_hashed.hash {
+ None => Null,
+ Some(h) => {
+ Array(vec![String(h.protocol.clone()), String(h.hash.clone())])
+ }
+ };
+ ser_seq.serialize_element(&hash)?;
+
+ let mode = match import.mode {
+ ImportMode::Code => 0,
+ ImportMode::RawText => 1,
+ };
+ ser_seq.serialize_element(&U64(mode))?;
+
+ let scheme = match &import.location_hashed.location {
+ ImportLocation::Remote(url) => match url.scheme {
+ Scheme::HTTP => 0,
+ Scheme::HTTPS => 1,
+ },
+ ImportLocation::Local(prefix, _) => match prefix {
+ FilePrefix::Absolute => 2,
+ FilePrefix::Here => 3,
+ FilePrefix::Parent => 4,
+ FilePrefix::Home => 5,
+ },
+ ImportLocation::Env(_) => 6,
+ ImportLocation::Missing => 7,
+ };
+ ser_seq.serialize_element(&U64(scheme))?;
+
+ match &import.location_hashed.location {
+ ImportLocation::Remote(url) => {
+ match &url.headers {
+ None => ser_seq.serialize_element(&Null)?,
+ Some(_x) => unimplemented!(),
+ // match cbor_value_to_dhall(&x)?.as_ref() {
+ // Embed(import) => Some(Box::new(
+ // import.location_hashed.clone(),
+ // )),
+ // }
+ };
+ ser_seq.serialize_element(&url.authority)?;
+ for p in &url.path {
+ ser_seq.serialize_element(p)?;
+ }
+ match &url.query {
+ None => ser_seq.serialize_element(&Null)?,
+ Some(x) => ser_seq.serialize_element(x)?,
+ };
+ }
+ ImportLocation::Local(_, path) => {
+ for p in path {
+ ser_seq.serialize_element(p)?;
+ }
+ }
+ ImportLocation::Env(env) => {
+ ser_seq.serialize_element(env)?;
+ }
+ ImportLocation::Missing => {}
+ }
+
+ ser_seq.end()
+}
+
+impl<'a> serde::ser::Serialize for Serialize<'a> {
+ fn serialize<S>(&self, ser: S) -> Result<S::Ok, S::Error>
+ where
+ S: serde::ser::Serializer,
+ {
+ match self {
+ Serialize::Expr(e) => serialize_subexpr(ser, e),
+ Serialize::CBOR(v) => v.serialize(ser),
+ Serialize::RecordMap(map) => {
+ ser.collect_map(map.iter().map(|(k, v)| {
+ (cbor::Value::String(k.into()), Serialize::Expr(v))
+ }))
+ }
+ Serialize::UnionMap(map) => {
+ ser.collect_map(map.iter().map(|(k, v)| {
+ let v = match v {
+ Some(x) => Serialize::Expr(x),
+ None => Serialize::CBOR(cbor::Value::Null),
+ };
+ (cbor::Value::String(k.into()), v)
+ }))
+ }
+ }
+ }
+}
+
+fn collect_nested_applications<'a, N, E>(
+ e: &'a SubExpr<N, E>,
+) -> (&'a SubExpr<N, E>, Vec<&'a SubExpr<N, E>>) {
+ fn go<'a, N, E>(
+ e: &'a SubExpr<N, E>,
+ vec: &mut Vec<&'a SubExpr<N, E>>,
+ ) -> &'a SubExpr<N, E> {
+ match e.as_ref() {
+ ExprF::App(f, a) => {
+ vec.push(a);
+ go(f, vec)
+ }
+ _ => e,
+ }
+ }
+ let mut vec = vec![];
+ let e = go(e, &mut vec);
+ (e, vec)
+}
diff --git a/dhall/src/phase/mod.rs b/dhall/src/phase/mod.rs
index 63480c5..681b7fe 100644
--- a/dhall/src/phase/mod.rs
+++ b/dhall/src/phase/mod.rs
@@ -8,7 +8,7 @@ use crate::core::context::TypecheckContext;
use crate::core::thunk::Thunk;
use crate::core::value::Value;
use crate::core::var::{AlphaVar, Shift, Subst};
-use crate::error::{Error, ImportError, TypeError, TypeMessage};
+use crate::error::{EncodeError, Error, ImportError, TypeError, TypeMessage};
use resolve::ImportRoot;
use typecheck::type_of_const;
@@ -20,6 +20,7 @@ pub(crate) mod resolve;
pub(crate) mod typecheck;
pub type ParsedSubExpr = SubExpr<Span, Import>;
+pub type DecodedSubExpr = SubExpr<X, Import>;
pub type ResolvedSubExpr = SubExpr<Span, Normalized>;
pub type NormalizedSubExpr = SubExpr<X, X>;
@@ -55,24 +56,30 @@ impl Parsed {
pub fn parse_file(f: &Path) -> Result<Parsed, Error> {
parse::parse_file(f)
}
-
pub fn parse_str(s: &str) -> Result<Parsed, Error> {
parse::parse_str(s)
}
-
#[allow(dead_code)]
pub fn parse_binary_file(f: &Path) -> Result<Parsed, Error> {
parse::parse_binary_file(f)
}
+ #[allow(dead_code)]
+ pub fn parse_binary(data: &[u8]) -> Result<Parsed, Error> {
+ parse::parse_binary(data)
+ }
pub fn resolve(self) -> Result<Resolved, ImportError> {
resolve::resolve(self)
}
-
#[allow(dead_code)]
pub fn skip_resolve(self) -> Result<Resolved, ImportError> {
resolve::skip_resolve_expr(self)
}
+
+ #[allow(dead_code)]
+ pub fn encode(&self) -> Result<Vec<u8>, EncodeError> {
+ crate::phase::binary::encode(&self.0)
+ }
}
impl Resolved {
diff --git a/dhall/src/phase/parse.rs b/dhall/src/phase/parse.rs
index 765fc09..734f6e1 100644
--- a/dhall/src/phase/parse.rs
+++ b/dhall/src/phase/parse.rs
@@ -22,6 +22,12 @@ pub fn parse_str(s: &str) -> Result<Parsed, Error> {
Ok(Parsed(expr, root))
}
+pub fn parse_binary(data: &[u8]) -> Result<Parsed, Error> {
+ let expr = crate::phase::binary::decode(data)?;
+ let root = ImportRoot::LocalDir(std::env::current_dir()?);
+ Ok(Parsed(expr.note_absurd(), root))
+}
+
pub fn parse_binary_file(f: &Path) -> Result<Parsed, Error> {
let mut buffer = Vec::new();
File::open(f)?.read_to_end(&mut buffer)?;
diff --git a/dhall/src/phase/resolve.rs b/dhall/src/phase/resolve.rs
index 7e446eb..fa5f32e 100644
--- a/dhall/src/phase/resolve.rs
+++ b/dhall/src/phase/resolve.rs
@@ -30,6 +30,7 @@ fn resolve_import(
};
match &import.location_hashed.location {
Local(prefix, path) => {
+ let path: PathBuf = path.iter().cloned().collect();
let path = match prefix {
// TODO: fail gracefully
Parent => cwd.parent().unwrap().join(path),
diff --git a/dhall/src/phase/typecheck.rs b/dhall/src/phase/typecheck.rs
index 5caf1d5..ac584cd 100644
--- a/dhall/src/phase/typecheck.rs
+++ b/dhall/src/phase/typecheck.rs
@@ -605,7 +605,7 @@ fn type_last_layer(
ensure_equal!(
x.get_type()?,
&text_type,
- mkerr(InvalidTextInterpolation(x)),
+ mkerr(InvalidTextInterpolation(x.clone())),
);
}
}
diff --git a/dhall/src/tests.rs b/dhall/src/tests.rs
index 76e2e26..f7802e8 100644
--- a/dhall/src/tests.rs
+++ b/dhall/src/tests.rs
@@ -33,9 +33,12 @@ macro_rules! make_spec_test {
};
}
+use std::fs::File;
+use std::io::Read;
+use std::path::PathBuf;
+
use crate::error::{Error, Result};
use crate::phase::Parsed;
-use std::path::PathBuf;
#[derive(Copy, Clone)]
pub enum Feature {
@@ -57,10 +60,6 @@ fn parse_file_str<'i>(file_path: &str) -> Result<Parsed> {
Parsed::parse_file(&PathBuf::from(file_path))
}
-fn parse_binary_file_str<'i>(file_path: &str) -> Result<Parsed> {
- Parsed::parse_binary_file(&PathBuf::from(file_path))
-}
-
pub fn run_test_stringy_error(
base_path: &str,
feature: Feature,
@@ -101,11 +100,38 @@ pub fn run_test(
let expr = parse_file_str(&expr_file_path)?;
if let Parser = feature {
+ // Compare parse/decoded
let expected_file_path = base_path + "B.dhallb";
- let expected = parse_binary_file_str(&expected_file_path)?;
-
+ let expected_file_path = PathBuf::from(&expected_file_path);
+ let mut expected_data = Vec::new();
+ {
+ File::open(&expected_file_path)?
+ .read_to_end(&mut expected_data)?;
+ }
+ let expected = Parsed::parse_binary(&expected_data)?;
assert_eq_pretty!(expr, expected);
+ // Compare encoded/expected
+ let expr_data = expr.encode()?;
+ // Compare bit-by-bit
+ if expr_data != expected_data {
+ // use std::io::Write;
+ // File::create(&expected_file_path)?.write_all(&expr_data)?;
+ // Pretty-print difference
+ assert_eq_pretty!(
+ serde_cbor::de::from_slice::<serde_cbor::value::Value>(
+ &expr_data
+ )
+ .unwrap(),
+ serde_cbor::de::from_slice::<serde_cbor::value::Value>(
+ &expected_data
+ )
+ .unwrap()
+ );
+ // If difference was not visible in the cbor::Value
+ assert_eq!(expr_data, expected_data);
+ }
+
// Round-trip pretty-printer
let expr_string = expr.to_string();
let expr: Parsed = Parsed::parse_str(&expr_string)?;
diff --git a/dhall_syntax/src/core/import.rs b/dhall_syntax/src/core/import.rs
index 00f293c..fbf2f7b 100644
--- a/dhall_syntax/src/core/import.rs
+++ b/dhall_syntax/src/core/import.rs
@@ -1,5 +1,3 @@
-use std::path::PathBuf;
-
/// The beginning of a file path which anchors subsequent path components
#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
pub enum FilePrefix {
@@ -16,7 +14,7 @@ pub enum FilePrefix {
/// The location of import (i.e. local vs. remote vs. environment)
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub enum ImportLocation {
- Local(FilePrefix, PathBuf),
+ Local(FilePrefix, Vec<String>),
Remote(URL),
Env(String),
Missing,
@@ -26,7 +24,7 @@ pub enum ImportLocation {
pub struct URL {
pub scheme: Scheme,
pub authority: String,
- pub path: PathBuf,
+ pub path: Vec<String>,
pub query: Option<String>,
pub headers: Option<Box<ImportHashed>>,
}
diff --git a/dhall_syntax/src/core/map.rs b/dhall_syntax/src/core/map.rs
index e5b399e..63f19cd 100644
--- a/dhall_syntax/src/core/map.rs
+++ b/dhall_syntax/src/core/map.rs
@@ -62,20 +62,30 @@ mod dup_tree_map {
size: usize,
}
- pub type IterInternal<'a, K, V> =
+ pub type IterInternalIntermediate<'a, K, V> =
iter::Zip<iter::Repeat<&'a K>, one_or_more::Iter<'a, V>>;
- pub type Iter<'a, K, V> = iter::FlatMap<
+ pub type IterInternal<'a, K, V> = iter::FlatMap<
btree_map::Iter<'a, K, OneOrMore<V>>,
- IterInternal<'a, K, V>,
- for<'b> fn((&'b K, &'b OneOrMore<V>)) -> IterInternal<'b, K, V>,
+ IterInternalIntermediate<'a, K, V>,
+ for<'b> fn(
+ (&'b K, &'b OneOrMore<V>),
+ ) -> IterInternalIntermediate<'b, K, V>,
>;
- pub type IntoIterInternal<K, V> =
+ pub struct Iter<'a, K, V> {
+ iter: IterInternal<'a, K, V>,
+ size: usize,
+ }
+ pub type IntoIterInternalIntermediate<K, V> =
iter::Zip<iter::Repeat<K>, one_or_more::IntoIter<V>>;
- pub type IntoIter<K, V> = iter::FlatMap<
+ pub type IntoIterInternal<K, V> = iter::FlatMap<
btree_map::IntoIter<K, OneOrMore<V>>,
- IntoIterInternal<K, V>,
- fn((K, OneOrMore<V>)) -> IntoIterInternal<K, V>,
+ IntoIterInternalIntermediate<K, V>,
+ fn((K, OneOrMore<V>)) -> IntoIterInternalIntermediate<K, V>,
>;
+ pub struct IntoIter<K: Clone, V> {
+ iter: IntoIterInternal<K, V>,
+ size: usize,
+ }
impl<K, V> DupTreeMap<K, V> {
pub fn new() -> Self
@@ -115,10 +125,13 @@ mod dup_tree_map {
{
fn foo<'a, K, V>(
(k, oom): (&'a K, &'a OneOrMore<V>),
- ) -> IterInternal<'a, K, V> {
+ ) -> IterInternalIntermediate<'a, K, V> {
iter::repeat(k).zip(oom.iter())
}
- self.map.iter().flat_map(foo)
+ Iter {
+ iter: self.map.iter().flat_map(foo),
+ size: self.size,
+ }
}
}
@@ -139,13 +152,18 @@ mod dup_tree_map {
type IntoIter = IntoIter<K, V>;
fn into_iter(self) -> Self::IntoIter {
- fn foo<K, V>((k, oom): (K, OneOrMore<V>)) -> IntoIterInternal<K, V>
+ fn foo<K, V>(
+ (k, oom): (K, OneOrMore<V>),
+ ) -> IntoIterInternalIntermediate<K, V>
where
K: Clone,
{
iter::repeat(k).zip(oom.into_iter())
}
- self.map.into_iter().flat_map(foo)
+ IntoIter {
+ iter: self.map.into_iter().flat_map(foo),
+ size: self.size,
+ }
}
}
@@ -176,4 +194,41 @@ mod dup_tree_map {
map
}
}
+
+ impl<'a, K, V> Iterator for Iter<'a, K, V> {
+ type Item = (&'a K, &'a V);
+
+ fn next(&mut self) -> Option<Self::Item> {
+ let next = self.iter.next();
+ if next.is_some() {
+ self.size -= 1;
+ }
+ next
+ }
+
+ fn size_hint(&self) -> (usize, Option<usize>) {
+ (self.size, Some(self.size))
+ }
+ }
+
+ impl<K, V> Iterator for IntoIter<K, V>
+ where
+ K: Clone,
+ {
+ type Item = (K, V);
+
+ fn next(&mut self) -> Option<Self::Item> {
+ let next = self.iter.next();
+ if next.is_some() {
+ self.size -= 1;
+ }
+ next
+ }
+
+ fn size_hint(&self) -> (usize, Option<usize>) {
+ (self.size, Some(self.size))
+ }
+ }
+
+ // unsafe impl<K, V> iter::TrustedLen for IntoIter<K, V> {}
}
diff --git a/dhall_syntax/src/core/text.rs b/dhall_syntax/src/core/text.rs
index e79a86b..0ce1e6f 100644
--- a/dhall_syntax/src/core/text.rs
+++ b/dhall_syntax/src/core/text.rs
@@ -43,6 +43,10 @@ impl<SubExpr> InterpolatedTextContents<SubExpr> {
}
impl<SubExpr> InterpolatedText<SubExpr> {
+ pub fn len(&self) -> usize {
+ 1 + 2 * self.tail.len()
+ }
+
pub fn head(&self) -> &str {
&self.head
}
@@ -74,17 +78,12 @@ impl<SubExpr> InterpolatedText<SubExpr> {
pub fn iter<'a>(
&'a self,
- ) -> impl Iterator<Item = InterpolatedTextContents<SubExpr>> + 'a
- where
- SubExpr: Clone,
- {
+ ) -> impl Iterator<Item = InterpolatedTextContents<&'a SubExpr>> + 'a {
use std::iter::once;
use InterpolatedTextContents::{Expr, Text};
- once(Text(self.head.clone()))
- .chain(self.tail.iter().flat_map(|(e, s)| {
- once(Expr(SubExpr::clone(e))).chain(once(Text(s.clone())))
- }))
- .filter(|c| !c.is_empty())
+ let exprs = self.tail.iter().map(|(e, _)| Expr(e));
+ let texts = self.tail.iter().map(|(_, s)| Text(s.clone()));
+ once(Text(self.head.clone())).chain(itertools::interleave(exprs, texts))
}
pub fn into_iter(
@@ -92,13 +91,11 @@ impl<SubExpr> InterpolatedText<SubExpr> {
) -> impl Iterator<Item = InterpolatedTextContents<SubExpr>> {
use std::iter::once;
use InterpolatedTextContents::{Expr, Text};
- once(Text(self.head))
- .chain(
- self.tail
- .into_iter()
- .flat_map(|(e, s)| once(Expr(e)).chain(once(Text(s)))),
- )
- .filter(|c| !c.is_empty())
+ once(Text(self.head)).chain(
+ self.tail
+ .into_iter()
+ .flat_map(|(e, s)| once(Expr(e)).chain(once(Text(s)))),
+ )
}
}
diff --git a/dhall_syntax/src/parser.rs b/dhall_syntax/src/parser.rs
index c847b29..3e461df 100644
--- a/dhall_syntax/src/parser.rs
+++ b/dhall_syntax/src/parser.rs
@@ -2,7 +2,6 @@ use itertools::Itertools;
use pest::iterators::Pair;
use pest::Parser;
use std::borrow::Cow;
-use std::path::PathBuf;
use std::rc::Rc;
use dhall_generated_parser::{DhallParser, Rule};
@@ -557,24 +556,24 @@ make_parser! {
},
[quoted_path_component(s)] => s.to_string(),
));
- rule!(path<PathBuf>; children!(
+ rule!(path<Vec<String>>; children!(
[path_component(components)..] => {
components.collect()
}
));
- rule_group!(local<(FilePrefix, PathBuf)>);
+ rule_group!(local<(FilePrefix, Vec<String>)>);
- rule!(parent_path<(FilePrefix, PathBuf)> as local; children!(
+ rule!(parent_path<(FilePrefix, Vec<String>)> as local; children!(
[path(p)] => (FilePrefix::Parent, p)
));
- rule!(here_path<(FilePrefix, PathBuf)> as local; children!(
+ rule!(here_path<(FilePrefix, Vec<String>)> as local; children!(
[path(p)] => (FilePrefix::Here, p)
));
- rule!(home_path<(FilePrefix, PathBuf)> as local; children!(
+ rule!(home_path<(FilePrefix, Vec<String>)> as local; children!(
[path(p)] => (FilePrefix::Home, p)
));
- rule!(absolute_path<(FilePrefix, PathBuf)> as local; children!(
+ rule!(absolute_path<(FilePrefix, Vec<String>)> as local; children!(
[path(p)] => (FilePrefix::Absolute, p)
));
diff --git a/dhall_syntax/src/printer.rs b/dhall_syntax/src/printer.rs
index 0162693..f1ce230 100644
--- a/dhall_syntax/src/printer.rs
+++ b/dhall_syntax/src/printer.rs
@@ -353,23 +353,21 @@ impl Display for Hash {
}
impl Display for ImportHashed {
fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
- use std::path::PathBuf;
use FilePrefix::*;
use ImportLocation::*;
- let quoted_path_component = |s: &str| -> String {
+ let fmt_remote_path_component = |s: &str| -> String {
+ use percent_encoding::{
+ utf8_percent_encode, PATH_SEGMENT_ENCODE_SET,
+ };
+ utf8_percent_encode(s, PATH_SEGMENT_ENCODE_SET).to_string()
+ };
+ let fmt_local_path_component = |s: &str| -> String {
if s.chars().all(|c| c.is_ascii_alphanumeric()) {
s.to_owned()
} else {
format!("\"{}\"", s)
}
};
- let fmt_path = |f: &mut fmt::Formatter, p: &PathBuf| {
- let res: String = p
- .iter()
- .map(|c| quoted_path_component(c.to_string_lossy().as_ref()))
- .join("/");
- f.write_str(&res)
- };
match &self.location {
Local(prefix, path) => {
@@ -380,11 +378,20 @@ impl Display for ImportHashed {
Absolute => "",
};
write!(f, "{}/", prefix)?;
- fmt_path(f, path)?;
+ let path: String = path
+ .iter()
+ .map(|c| fmt_local_path_component(c.as_ref()))
+ .join("/");
+ f.write_str(&path)?;
}
Remote(url) => {
write!(f, "{}://{}/", url.scheme, url.authority,)?;
- fmt_path(f, &url.path)?;
+ let path: String = url
+ .path
+ .iter()
+ .map(|c| fmt_remote_path_component(c.as_ref()))
+ .join("/");
+ f.write_str(&path)?;
if let Some(q) = &url.query {
write!(f, "?{}", q)?
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-23 23:28:34 +0000