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RFC 48 prototype #1316

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RFC 48 prototype #1316

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7ae4292
Updated grammar
shaobo-he-aws Nov 11, 2024
4cc552f
more annotations
shaobo-he-aws Nov 11, 2024
c8cea25
more examples
shaobo-he-aws Nov 11, 2024
18b9163
permissive annotations on all attributes
shaobo-he-aws Nov 11, 2024
dd29ec0
JSON schema annotations
shaobo-he-aws Nov 12, 2024
1c72ef4
it works?
shaobo-he-aws Nov 21, 2024
bca5e57
Merge remote-tracking branch 'origin/main' into feature/shaobo/rfc48
shaobo-he-aws Nov 27, 2024
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14 changes: 8 additions & 6 deletions cedar-policy-validator/src/cedar_schema/fmt.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -31,8 +31,8 @@ impl<N: Display> Display for json_schema::Fragment<N> {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
for (ns, def) in &self.0 {
match ns {
None => write!(f, "{def}")?,
Some(ns) => write!(f, "namespace {ns} {{\n{def}}}\n")?,
None => write!(f, "{}", def.data)?,
Some(ns) => write!(f, "namespace {ns} {{\n{}}}\n", def.data)?,
}
}
Ok(())
Expand All @@ -42,13 +42,13 @@ impl<N: Display> Display for json_schema::Fragment<N> {
impl<N: Display> Display for json_schema::NamespaceDefinition<N> {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
for (n, ty) in &self.common_types {
writeln!(f, "type {n} = {ty};")?
writeln!(f, "type {n} = {};", ty.data)?
}
for (n, ty) in &self.entity_types {
writeln!(f, "entity {n}{ty};")?
writeln!(f, "entity {n}{};", ty.data)?
}
for (n, a) in &self.actions {
writeln!(f, "action \"{}\"{a};", n.escape_debug())?
writeln!(f, "action \"{}\"{};", n.escape_debug(), a.data)?
}
Ok(())
}
Expand Down Expand Up @@ -83,7 +83,7 @@ impl<N: Display> Display for json_schema::RecordType<N> {
"\"{}\"{}: {}",
n.escape_debug(),
if ty.required { "" } else { "?" },
ty.ty
ty.ty.0.data
)?;
if i < (self.attributes.len() - 1) {
write!(f, ", ")?;
Expand Down Expand Up @@ -209,6 +209,7 @@ pub fn json_schema_to_cedar_schema_str<N: Display>(
let mut name_collisions: Vec<SmolStr> = Vec::new();
for (name, ns) in json_schema.0.iter().filter(|(name, _)| !name.is_none()) {
let entity_types: HashSet<SmolStr> = ns
.data
.entity_types
.keys()
.map(|ty_name| {
Expand All @@ -218,6 +219,7 @@ pub fn json_schema_to_cedar_schema_str<N: Display>(
})
.collect();
let common_types: HashSet<SmolStr> = ns
.data
.common_types
.keys()
.map(|ty_name| {
Expand Down
21 changes: 14 additions & 7 deletions cedar-policy-validator/src/cedar_schema/grammar.lalrpop
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Original file line number Diff line number Diff line change
Expand Up @@ -82,10 +82,18 @@ match {

// other tokens
",", ";", ":", "::", "{", "}", "[", "]",
"<", ">", "=", "?",
"<", ">", "=", "?", "@", "(", ")",

}

// Annotations := {'@' Ident '(' String ')'}
Annotation: Node<()> = {
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@john-h-kastner-aws john-h-kastner-aws Nov 15, 2024 •
edited
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I wonder if we can start sharing some code between this grammar and the policy grammar. There are probably some other common bits like idents and names at least

<l:@L> "@" <key:Ident> <value: ("(" <STR> ")")?> <r:@R> => Node::with_source_loc((), Loc::new(l..r, Arc::clone(src)))
}

Annotated<E>: E = {
<annotations: Annotation*> <e:E> => e,
}

// Schema := {Namespace}
pub Schema: ASchema = {
Expand All @@ -94,9 +102,9 @@ pub Schema: ASchema = {

// Namespace := 'namespace' Path '{' {Decl} '}'
Namespace: Node<Namespace> = {
<l:@L> NAMESPACE <p: Path> "{" <decls: Decl*> "}" <r:@R>
<l:@L> <annotations: Annotation*> NAMESPACE <p: Path> "{" <decls: Annotated<Decl>*> "}" <r:@R>
=> Node::with_source_loc(Namespace { name: Some(Node::with_source_loc(p, Loc::new(l..r, Arc::clone(src)))), decls}, Loc::new(l..r, Arc::clone(src))),
<l:@L> <decl: Decl> <r:@R> => Node::with_source_loc(Namespace {name: None, decls: vec![decl]}, Loc::new(l..r, Arc::clone(src))),
<l:@L> <decl: Annotated<Decl>> <r:@R> => Node::with_source_loc(Namespace {name: None, decls: vec![decl]}, Loc::new(l..r, Arc::clone(src))),
}

// Decl := Entity | Action | TypeDecl
Expand Down Expand Up @@ -183,15 +191,14 @@ pub Type: Node<SType> = {
=> Node::with_source_loc(SType::Record(ds.unwrap_or_default()), Loc::new(l..r, Arc::clone(src))),
}

// AttrDecls := Name ['?'] ':' Type [',' | ',' AttrDecls]
// AttrDecls := Annotation* Name ['?'] ':' Type [',' | ',' AttrDecls]
AttrDecls: Vec<Node<AttrDecl>> = {
<l:@L> <name: Name> <required:"?"?> ":" <ty:Type> ","? <r:@R>
<l:@L> <annotations: Annotation*> <name: Name> <required:"?"?> ":" <ty:Type> ","? <r:@R>
=> vec![Node::with_source_loc(AttrDecl { name, required: required.is_none(), ty}, Loc::new(l..r, Arc::clone(src)))],
<l:@L> <name: Name> <required:"?"?> ":" <ty:Type> "," <r:@R> <mut ds: AttrDecls>
<l:@L> <annotations: Annotation*> <name: Name> <required:"?"?> ":" <ty:Type> "," <r:@R> <mut ds: AttrDecls>
=> {ds.insert(0, Node::with_source_loc(AttrDecl { name, required: required.is_none(), ty}, Loc::new(l..r, Arc::clone(src)))); ds},
}


Comma<E>: Vec<E> = {
<e:E?> => e.into_iter().collect(),
<mut es:(<E> ",")+> <e:E> => {
Expand Down
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