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updated grammar for Cedar Schema #177

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updated grammar for Cedar Schema #177

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811570b
updated grammar for Cedar Schema
alanwang67 Jun 18, 2025
ee092ab
Change annotations to reflect that any identifier can be used
alanwang67 Jun 20, 2025
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10 changes: 6 additions & 4 deletions docs/collections/_schema/human-readable-schema-grammar.md
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Original file line number Diff line number Diff line change
Expand Up @@ -32,7 +32,7 @@ Tokens are defined using regular expressions:
The grammar adopts the same string escaping rules as the [Cedar policy grammar](../policies/syntax-grammar.html).

```
Annotation := '@' IDENT '(' STR ')'
Annotation := '@' ANYIDENT '(' STR ')'
Annotations := {Annotations}
Schema := {Namespace}
Namespace := (Annotations 'namespace' Path '{' {Decl} '}') | Decl
Expand All @@ -57,11 +57,13 @@ Name := IDENT | STR
Names := Name {',' Name}
Idents := IDENT {',' IDENT}

IDENT := ['_''a'-'z''A'-'Z']['_''a'-'z''A'-'Z''0'-'9']*
TYPENAME := IDENT - RESERVED
ANYIDENT := ['_''a'-'z''A'-'Z']['_''a'-'z''A'-'Z''0'-'9']*
IDENT := ANYIDENT - RESERVED
RESERVED := 'true' | 'false' | 'if' | 'then' | 'else' | 'in' | 'like' | 'has' | 'is' | '__cedar'
TYPENAME := IDENT - TYPERESERVED
STR := Fully-escaped Unicode surrounded by '"'s
PRIMTYPE := 'Long' | 'String' | 'Bool'
WHITESPC := Unicode whitespace
COMMENT := '//' ~NEWLINE* NEWLINE
RESERVED := 'Bool' | 'Boolean' | 'Entity' | 'Extension' | 'Long' | 'Record' | 'Set' | 'String'
TYPERESERVED := 'Bool' | 'Boolean' | 'Entity' | 'Extension' | 'Long' | 'Record' | 'Set' | 'String'
```