Enum regorust::NodeKind

pub enum NodeKind {
    Undefined,
    Binding,
    Var,
    Term,
    Scalar,
    Array,
    Set,
    Object,
    ObjectItem,
    Int,
    Float,
    String,
    True,
    False,
    Null,
    Terms,
    Bindings,
    Results,
    Result,
    Error,
    ErrorSeq,
    ErrorMessage,
    ErrorAst,
    ErrorCode,
    Internal,
}

Enumeration of different kinds of Rego Nodes that can be returned as output from a query.

The main kinds of nodes are:

• Binding - A variable binding. Has two children: a Var and a Term
• Var - A variable name. Has no children.
• Term - A term. Has one child: a Scalar, Array, Set, or Object
• Scalar - A scalar value. Has one child: a String, Int, Float, True, False, or Null
• Array - An array. Has zero or more Term children.
• Set - A set. Has zero or more Term children.
• Object - An object. Has zero or more ObjectItem children.
• ObjectItem - An object item. Has two Term children.

Errors are also represented as nodes:

• Error - An error. Has three children: an ErrorMessage, ErrorAst, and ErrorCode
• ErrorMessage - An error message.
• ErrorAst - A tree representing where in the input program the error occurred.
• ErrorCode - An error code.
• ErrorSeq - A sequence of errors. Has one or more Error children.

Variants

Undefined

Binding

Var

Term

Scalar

Array

Set

Object

ObjectItem

Int

Float

String

True

False

Null

Terms

Bindings

Results

Result

Error

ErrorSeq

ErrorMessage

ErrorAst

ErrorCode

Internal

Trait Implementations

impl Clone for NodeKind

fn clone(&self) -> NodeKind

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for NodeKind

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

Formats the value using the given formatter.

impl Default for NodeKind

fn default() -> NodeKind

Returns the “default value” for a type.