Enum Expr 

pub enum Expr {
    Reference(Reference),
    String(String),
    Number(f64),
    Bool(bool),
    None,
    List(Vec<Spanned<Expr>>),
    Object(IndexMap<String, Spanned<Expr>>),
    BinOp {
        left: Box<Spanned<Expr>>,
        op: BinOp,
        right: Box<Spanned<Expr>>,
    },
    UnaryOp {
        op: UnaryOp,
        operand: Box<Spanned<Expr>>,
    },
    Ternary {
        condition: Box<Spanned<Expr>>,
        then_expr: Box<Spanned<Expr>>,
        else_expr: Box<Spanned<Expr>>,
    },
    Property {
        object: Box<Spanned<Expr>>,
        field: Spanned<String>,
    },
    Index {
        object: Box<Spanned<Expr>>,
        index: Box<Spanned<Expr>>,
    },
}

An expression in AgentScript.

Expressions can appear in conditions, variable assignments, action bindings, and dynamic instruction interpolation.

Variants

Variant	Example	Description
Reference	@variables.name	Reference to a namespaced resource
String	"hello"	String literal
Number	42, 3.14	Numeric literal
Bool	True, False	Boolean literal
None	None	Null value
List	[1, 2, 3]	Array literal
Object	{key: value}	Object literal
BinOp	a == b	Binary operation
UnaryOp	not x	Unary operation
Ternary	x if cond else y	Conditional expression
Property	obj.field	Property access
Index	arr[0]	Index access

Variants

Reference(Reference)

Reference to a namespaced resource: @namespace.path.

Common namespaces: variables, actions, outputs, topic, utils.

String(String)

String literal: "text".

Number(f64)

Numeric literal: 42 or 3.14.

Bool(bool)

Boolean literal: True or False.

None

Null value: None.

List(Vec<Spanned<Expr>>)

Array literal: [item1, item2, ...].

Object(IndexMap<String, Spanned<Expr>>)

Object literal: {key1: value1, key2: value2}.

BinOp

Binary operation: left op right.

Fields

left: Box<Spanned<Expr>>

Left operand.

op: BinOp

Operator.

right: Box<Spanned<Expr>>

Right operand.

UnaryOp

Unary operation: op operand.

Fields

op: UnaryOp

Operator (e.g., not, -).

operand: Box<Spanned<Expr>>

Operand.

Ternary

Ternary conditional: then_expr if condition else else_expr.

Note: Python-style ordering (value first, then condition).

Fields

condition: Box<Spanned<Expr>>

The condition to evaluate.

then_expr: Box<Spanned<Expr>>

Value if condition is true.

else_expr: Box<Spanned<Expr>>

Value if condition is false.

Property

Property access: object.field.

Fields

object: Box<Spanned<Expr>>

The object to access.

field: Spanned<String>

The field name.

Index

Index access: object[index].

Fields

object: Box<Spanned<Expr>>

The array/object to index.

index: Box<Spanned<Expr>>

The index expression.

Trait Implementations

impl Clone for Expr

fn clone(&self) -> Expr

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Expr

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Expr

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for Expr

fn eq(&self, other: &Expr) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for Expr

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Expr