Enum Value 

#[non_exhaustive]
pub enum Value {
    Null,
    String(String),
    Integer(i64),
    Float(f64),
    Bool(bool),
    List(Vec<Value>),
    Map(BTreeMap<String, Value>),
}

A value from YAML frontmatter, preserving type information.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Null

String(String)

Integer(i64)

Float(f64)

Bool(bool)

List(Vec<Value>)

Map(BTreeMap<String, Value>)

Implementations

impl Value

pub fn as_str(&self) -> Option<&str>

Try to get a string reference.

pub fn as_integer(&self) -> Option<i64>

Try to interpret as i64 (from Integer, or by parsing a String).

pub fn as_float(&self) -> Option<f64>

Try to interpret as f64.

pub fn list_contains(&self, needle: &str) -> bool

Check if this value (as a List) contains an item matching the needle string.

pub fn type_name(&self) -> &'static str

Human-readable type name.

pub fn display_value(&self) -> String

Display-friendly string representation.

pub fn is_empty(&self) -> bool

Whether this value is null or an empty collection.

pub fn as_bool(&self) -> Option<bool>

Returns the inner bool if this is Value::Bool, else None.

pub fn as_list(&self) -> Option<&[Value]>

Returns the inner list if this is Value::List, else None.

pub fn as_map(&self) -> Option<&BTreeMap<String, Value>>

Returns the inner map if this is Value::Map, else None.

pub fn is_null(&self) -> bool

Returns true if this value is Value::Null.

pub fn parse_scalar(s: &str) -> Self

Best-effort parse of a CLI-style FIELD=VALUE scalar string into a typed Value. Tries integer, then float, then falls back to a string. Shared by every frontend that accepts loosely-typed user input — CLI --set, MCP plan_update, the upcoming CreateBuilder set-field path.

Trait Implementations

impl Clone for Value

fn clone(&self) -> Value

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Value

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Value

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for Value

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

Formats the value using the given formatter.

impl From<&str> for Value

fn from(v: &str) -> Self

Converts to this type from the input type.

impl From<String> for Value

fn from(v: String) -> Self

Converts to this type from the input type.

impl<T: Into<Value>> From<Vec<T>> for Value

fn from(v: Vec<T>) -> Self

Converts to this type from the input type.

impl From<bool> for Value

fn from(v: bool) -> Self

Converts to this type from the input type.

impl From<f32> for Value

fn from(v: f32) -> Self

Converts to this type from the input type.

impl From<f64> for Value

fn from(v: f64) -> Self

Converts to this type from the input type.

impl From<i32> for Value

fn from(v: i32) -> Self

Converts to this type from the input type.

impl From<i64> for Value

fn from(v: i64) -> Self

Converts to this type from the input type.

impl From<u32> for Value

fn from(v: u32) -> Self

Converts to this type from the input type.

impl PartialEq for Value

fn eq(&self, other: &Value) -> 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 Value

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 Value