Struct cedar_policy_core::ast::Context

pub struct Context { /* private fields */ }

Context field of a Request

Implementations

impl Context

pub fn empty() -> Self

Create an empty Context

pub fn from_expr(expr: RestrictedExpr) -> Result<Self, RestrictedExpr>

Create a Context from a RestrictedExpr, which must be a Record. If it is not a Record, then this function returns Err (returning ownership of the non-record expression), otherwise it returns Ok of a context for that record.

pub fn from_pairs( pairs: impl IntoIterator<Item = (SmolStr, RestrictedExpr)>, ) -> Self

Create a Context from a map of key to RestrictedExpr, or a Vec of (key, RestrictedExpr) pairs, or any other iterator of (key, RestrictedExpr) pairs

pub fn from_json_str(json: &str) -> Result<Self, JsonDeserializationError>

Create a Context from a string containing JSON (which must be a JSON object, not any other JSON type, or you will get an error here). JSON here must use the __entity and __extn escapes for entity references, extension values, etc.

For schema-based parsing, use ContextJsonParser.

pub fn from_json_value(json: Value) -> Result<Self, JsonDeserializationError>

Create a Context from a serde_json::Value (which must be a JSON object, not any other JSON type, or you will get an error here). JSON here must use the __entity and __extn escapes for entity references, extension values, etc.

For schema-based parsing, use ContextJsonParser.

pub fn from_json_file(json: impl Read) -> Result<Self, JsonDeserializationError>

Create a Context from a JSON file. The JSON file must contain a JSON object, not any other JSON type, or you will get an error here. JSON here must use the __entity and __extn escapes for entity references, extension values, etc.

For schema-based parsing, use ContextJsonParser.

pub fn iter(&self) -> impl Iterator<Item = (&str, BorrowedRestrictedExpr<'_>)>

Iterate over the (key, value) pairs in the Context

Trait Implementations

impl AsRef<RestrictedExpr> for Context

fn as_ref(&self) -> &RestrictedExpr

Converts this type into a shared reference of the (usually inferred) input type.

impl Clone for Context

fn clone(&self) -> Context

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Context

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Context

fn default() -> Context

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Context

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for Context

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Serialize for Context

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.