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authorNadrieril Feneanar2020-03-17 18:10:40 +0000
committerGitHub2020-03-17 18:10:40 +0000
commit6d82e0040316b4feefd3d95129829f91b595b5f2 (patch)
tree30dc5ece69d74027ed84ba7aeeb1ca575dea15ee /dhall
parent65e8aa46344b9dc32c3ad776856791d18cc616c3 (diff)
parentcd30948242576e9262796d4ecd998b62619b0e8a (diff)
Merge pull request #143 from Nadrieril/record-puns
Implement record puns
Diffstat (limited to '')
m---------dhall-lang0
-rw-r--r--dhall/build.rs13
-rw-r--r--dhall/src/syntax/ast/span.rs1
-rw-r--r--dhall/src/syntax/text/dhall.pest.visibility2
-rw-r--r--dhall/src/syntax/text/parser.rs5
-rw-r--r--dhall/src/syntax/text/printer.rs2
-rw-r--r--dhall/tests/parser/failure/spacing/MergeNoSpace2.txt2
-rw-r--r--dhall/tests/parser/failure/spacing/RecordTypeNoSpace.txt2
-rw-r--r--dhall/tests/parser/failure/unit/RecordLitPunDotted.txt6
9 files changed, 17 insertions, 16 deletions
diff --git a/dhall-lang b/dhall-lang
-Subproject ea3ed688dfbd787c7dc998ab00fce7dca78fc4a
+Subproject 99d84e47ed9c64cee9c48212ca8f2af9320cdda
diff --git a/dhall/build.rs b/dhall/build.rs
index 6a0a3bf..ce677e3 100644
--- a/dhall/build.rs
+++ b/dhall/build.rs
@@ -374,19 +374,6 @@ fn convert_abnf_to_pest() -> std::io::Result<()> {
rules.remove("url_path");
writeln!(&mut file, "url_path = _{{ path }}")?;
- // TODO: upstream this tweak
- rules.remove("with_expression");
- writeln!(
- &mut file,
- r#"
- with_expression = {{ application_expression ~ (whsp1 ~ with ~ whsp1 ~ with_clause)* }}
- with_clause = {{
- any_label_or_some ~ (whsp ~ "." ~ whsp ~ any_label_or_some)*
- ~ whsp ~ "=" ~ whsp ~ application_expression
- }}
- "#
- )?;
-
// Work around some greediness issue in the grammar.
rules.remove("missing");
writeln!(
diff --git a/dhall/src/syntax/ast/span.rs b/dhall/src/syntax/ast/span.rs
index 50985e1..153a624 100644
--- a/dhall/src/syntax/ast/span.rs
+++ b/dhall/src/syntax/ast/span.rs
@@ -22,6 +22,7 @@ pub(crate) enum Span {
DuplicateRecordFieldsSugar,
DottedFieldSugar,
WithSugar,
+ RecordPunSugar,
/// For expressions obtained from decoding binary
Decoded,
/// For expressions constructed during normalization/typecheck
diff --git a/dhall/src/syntax/text/dhall.pest.visibility b/dhall/src/syntax/text/dhall.pest.visibility
index 0ff1bfe..2a89076 100644
--- a/dhall/src/syntax/text/dhall.pest.visibility
+++ b/dhall/src/syntax/text/dhall.pest.visibility
@@ -184,6 +184,8 @@ non_empty_record_type
record_type_entry
non_empty_record_literal
record_literal_entry
+# record_literal_punned_entry
+# record_literal_normal_entry
union_type
empty_union_type
# non_empty_union_type
diff --git a/dhall/src/syntax/text/parser.rs b/dhall/src/syntax/text/parser.rs
index f59cf06..b3c2c40 100644
--- a/dhall/src/syntax/text/parser.rs
+++ b/dhall/src/syntax/text/parser.rs
@@ -954,6 +954,11 @@ impl DhallParser {
fn record_literal_entry(input: ParseInput) -> ParseResult<(Label, Expr)> {
Ok(match_nodes!(input.into_children();
+ [label(name)] => {
+ // Desugar record pun into a variable
+ let expr = Expr::new(Var(name.clone().into()), Span::RecordPunSugar);
+ (name, expr)
+ },
[label(name), expression(expr)] => (name, expr),
[label(first_name), label(names).., expression(expr)] => {
// Desugar dotted field syntax into nested records
diff --git a/dhall/src/syntax/text/printer.rs b/dhall/src/syntax/text/printer.rs
index 5bb987b..a8991b0 100644
--- a/dhall/src/syntax/text/printer.rs
+++ b/dhall/src/syntax/text/printer.rs
@@ -357,7 +357,7 @@ impl Display for Label {
let s = String::from(self);
let is_reserved = match s.as_str() {
"let" | "in" | "if" | "then" | "else" | "Type" | "Kind"
- | "Sort" | "True" | "False" => true,
+ | "Sort" | "True" | "False" | "Some" => true,
_ => crate::syntax::Builtin::parse(&s).is_some(),
};
if !is_reserved && s.chars().all(|c| c.is_ascii_alphanumeric()) {
diff --git a/dhall/tests/parser/failure/spacing/MergeNoSpace2.txt b/dhall/tests/parser/failure/spacing/MergeNoSpace2.txt
index 307d873..96d937b 100644
--- a/dhall/tests/parser/failure/spacing/MergeNoSpace2.txt
+++ b/dhall/tests/parser/failure/spacing/MergeNoSpace2.txt
@@ -3,4 +3,4 @@
1 | merge x(y)␊
| ^---
|
- = expected missing, double_quote_literal, single_quote_literal, if_, merge, NaN, Some_, toMap, assert, forall, numeric_double_literal, minus_infinity_literal, plus_infinity_literal, natural_literal, integer_literal, import_hashed, or non_empty_list_literal
+ = expected missing, double_quote_literal, single_quote_literal, if_, merge, non_empty_list_literal, NaN, Some_, toMap, assert, forall, numeric_double_literal, minus_infinity_literal, plus_infinity_literal, natural_literal, integer_literal, or import_hashed
diff --git a/dhall/tests/parser/failure/spacing/RecordTypeNoSpace.txt b/dhall/tests/parser/failure/spacing/RecordTypeNoSpace.txt
index f6427a4..0e1a879 100644
--- a/dhall/tests/parser/failure/spacing/RecordTypeNoSpace.txt
+++ b/dhall/tests/parser/failure/spacing/RecordTypeNoSpace.txt
@@ -3,4 +3,4 @@
1 | { x :T }␊
| ^---
|
- = expected non_empty_record_type_or_literal or empty_record_literal
+ = expected missing, if_, merge, NaN, Some_, toMap, assert, forall, empty_record_literal, or record_type_entry
diff --git a/dhall/tests/parser/failure/unit/RecordLitPunDotted.txt b/dhall/tests/parser/failure/unit/RecordLitPunDotted.txt
new file mode 100644
index 0000000..2e0ac22
--- /dev/null
+++ b/dhall/tests/parser/failure/unit/RecordLitPunDotted.txt
@@ -0,0 +1,6 @@
+ --> 1:7
+ |
+1 | { x.y.z }␊
+ | ^---
+ |
+ = expected missing, if_, merge, NaN, Some_, toMap, assert, or forall