| use std::iter::FromIterator; | 
 | use std::str::FromStr; | 
 |  | 
 | use toml_datetime::*; | 
 |  | 
 | use crate::key::Key; | 
 | use crate::parser; | 
 | use crate::repr::{Decor, Formatted}; | 
 | use crate::{Array, InlineTable, InternalString, RawString}; | 
 |  | 
 | /// Representation of a TOML Value (as part of a Key/Value Pair). | 
 | #[derive(Debug, Clone)] | 
 | pub enum Value { | 
 |     /// A string value. | 
 |     String(Formatted<String>), | 
 |     /// A 64-bit integer value. | 
 |     Integer(Formatted<i64>), | 
 |     /// A 64-bit float value. | 
 |     Float(Formatted<f64>), | 
 |     /// A boolean value. | 
 |     Boolean(Formatted<bool>), | 
 |     /// An RFC 3339 formatted date-time with offset. | 
 |     Datetime(Formatted<Datetime>), | 
 |     /// An inline array of values. | 
 |     Array(Array), | 
 |     /// An inline table of key/value pairs. | 
 |     InlineTable(InlineTable), | 
 | } | 
 |  | 
 | /// Downcasting | 
 | impl Value { | 
 |     /// Text description of value type | 
 |     pub fn type_name(&self) -> &'static str { | 
 |         match self { | 
 |             Value::String(..) => "string", | 
 |             Value::Integer(..) => "integer", | 
 |             Value::Float(..) => "float", | 
 |             Value::Boolean(..) => "boolean", | 
 |             Value::Datetime(..) => "datetime", | 
 |             Value::Array(..) => "array", | 
 |             Value::InlineTable(..) => "inline table", | 
 |         } | 
 |     } | 
 |  | 
 |     /// Casts `self` to str. | 
 |     pub fn as_str(&self) -> Option<&str> { | 
 |         match *self { | 
 |             Value::String(ref value) => Some(value.value()), | 
 |             _ => None, | 
 |         } | 
 |     } | 
 |  | 
 |     /// Returns true iff `self` is a string. | 
 |     pub fn is_str(&self) -> bool { | 
 |         self.as_str().is_some() | 
 |     } | 
 |  | 
 |     /// Casts `self` to integer. | 
 |     pub fn as_integer(&self) -> Option<i64> { | 
 |         match *self { | 
 |             Value::Integer(ref value) => Some(*value.value()), | 
 |             _ => None, | 
 |         } | 
 |     } | 
 |  | 
 |     /// Returns true iff `self` is an integer. | 
 |     pub fn is_integer(&self) -> bool { | 
 |         self.as_integer().is_some() | 
 |     } | 
 |  | 
 |     /// Casts `self` to float. | 
 |     pub fn as_float(&self) -> Option<f64> { | 
 |         match *self { | 
 |             Value::Float(ref value) => Some(*value.value()), | 
 |             _ => None, | 
 |         } | 
 |     } | 
 |  | 
 |     /// Returns true iff `self` is a float. | 
 |     pub fn is_float(&self) -> bool { | 
 |         self.as_float().is_some() | 
 |     } | 
 |  | 
 |     /// Casts `self` to boolean. | 
 |     pub fn as_bool(&self) -> Option<bool> { | 
 |         match *self { | 
 |             Value::Boolean(ref value) => Some(*value.value()), | 
 |             _ => None, | 
 |         } | 
 |     } | 
 |  | 
 |     /// Returns true iff `self` is a boolean. | 
 |     pub fn is_bool(&self) -> bool { | 
 |         self.as_bool().is_some() | 
 |     } | 
 |  | 
 |     /// Casts `self` to date-time. | 
 |     pub fn as_datetime(&self) -> Option<&Datetime> { | 
 |         match *self { | 
 |             Value::Datetime(ref value) => Some(value.value()), | 
 |             _ => None, | 
 |         } | 
 |     } | 
 |  | 
 |     /// Returns true iff `self` is a date-time. | 
 |     pub fn is_datetime(&self) -> bool { | 
 |         self.as_datetime().is_some() | 
 |     } | 
 |  | 
 |     /// Casts `self` to array. | 
 |     pub fn as_array(&self) -> Option<&Array> { | 
 |         match *self { | 
 |             Value::Array(ref value) => Some(value), | 
 |             _ => None, | 
 |         } | 
 |     } | 
 |  | 
 |     /// Casts `self` to mutable array. | 
 |     pub fn as_array_mut(&mut self) -> Option<&mut Array> { | 
 |         match *self { | 
 |             Value::Array(ref mut value) => Some(value), | 
 |             _ => None, | 
 |         } | 
 |     } | 
 |  | 
 |     /// Returns true iff `self` is an array. | 
 |     pub fn is_array(&self) -> bool { | 
 |         self.as_array().is_some() | 
 |     } | 
 |  | 
 |     /// Casts `self` to inline table. | 
 |     pub fn as_inline_table(&self) -> Option<&InlineTable> { | 
 |         match *self { | 
 |             Value::InlineTable(ref value) => Some(value), | 
 |             _ => None, | 
 |         } | 
 |     } | 
 |  | 
 |     /// Casts `self` to mutable inline table. | 
 |     pub fn as_inline_table_mut(&mut self) -> Option<&mut InlineTable> { | 
 |         match *self { | 
 |             Value::InlineTable(ref mut value) => Some(value), | 
 |             _ => None, | 
 |         } | 
 |     } | 
 |  | 
 |     /// Returns true iff `self` is an inline table. | 
 |     pub fn is_inline_table(&self) -> bool { | 
 |         self.as_inline_table().is_some() | 
 |     } | 
 | } | 
 |  | 
 | impl Value { | 
 |     /// Get the decoration of the value. | 
 |     /// # Example | 
 |     /// ```rust | 
 |     /// let v = toml_edit::Value::from(true); | 
 |     /// assert_eq!(v.decor().suffix(), None); | 
 |     ///``` | 
 |     pub fn decor_mut(&mut self) -> &mut Decor { | 
 |         match self { | 
 |             Value::String(f) => f.decor_mut(), | 
 |             Value::Integer(f) => f.decor_mut(), | 
 |             Value::Float(f) => f.decor_mut(), | 
 |             Value::Boolean(f) => f.decor_mut(), | 
 |             Value::Datetime(f) => f.decor_mut(), | 
 |             Value::Array(a) => a.decor_mut(), | 
 |             Value::InlineTable(t) => t.decor_mut(), | 
 |         } | 
 |     } | 
 |  | 
 |     /// Get the decoration of the value. | 
 |     /// # Example | 
 |     /// ```rust | 
 |     /// let v = toml_edit::Value::from(true); | 
 |     /// assert_eq!(v.decor().suffix(), None); | 
 |     ///``` | 
 |     pub fn decor(&self) -> &Decor { | 
 |         match *self { | 
 |             Value::String(ref f) => f.decor(), | 
 |             Value::Integer(ref f) => f.decor(), | 
 |             Value::Float(ref f) => f.decor(), | 
 |             Value::Boolean(ref f) => f.decor(), | 
 |             Value::Datetime(ref f) => f.decor(), | 
 |             Value::Array(ref a) => a.decor(), | 
 |             Value::InlineTable(ref t) => t.decor(), | 
 |         } | 
 |     } | 
 |  | 
 |     /// Sets the prefix and the suffix for value. | 
 |     /// # Example | 
 |     /// ```rust | 
 |     /// let mut v = toml_edit::Value::from(42); | 
 |     /// assert_eq!(&v.to_string(), "42"); | 
 |     /// let d = v.decorated(" ", " "); | 
 |     /// assert_eq!(&d.to_string(), " 42 "); | 
 |     /// ``` | 
 |     pub fn decorated(mut self, prefix: impl Into<RawString>, suffix: impl Into<RawString>) -> Self { | 
 |         self.decorate(prefix, suffix); | 
 |         self | 
 |     } | 
 |  | 
 |     pub(crate) fn decorate(&mut self, prefix: impl Into<RawString>, suffix: impl Into<RawString>) { | 
 |         let decor = self.decor_mut(); | 
 |         *decor = Decor::new(prefix, suffix); | 
 |     } | 
 |  | 
 |     /// Returns the location within the original document | 
 |     pub(crate) fn span(&self) -> Option<std::ops::Range<usize>> { | 
 |         match self { | 
 |             Value::String(f) => f.span(), | 
 |             Value::Integer(f) => f.span(), | 
 |             Value::Float(f) => f.span(), | 
 |             Value::Boolean(f) => f.span(), | 
 |             Value::Datetime(f) => f.span(), | 
 |             Value::Array(a) => a.span(), | 
 |             Value::InlineTable(t) => t.span(), | 
 |         } | 
 |     } | 
 |  | 
 |     pub(crate) fn despan(&mut self, input: &str) { | 
 |         match self { | 
 |             Value::String(f) => f.despan(input), | 
 |             Value::Integer(f) => f.despan(input), | 
 |             Value::Float(f) => f.despan(input), | 
 |             Value::Boolean(f) => f.despan(input), | 
 |             Value::Datetime(f) => f.despan(input), | 
 |             Value::Array(a) => a.despan(input), | 
 |             Value::InlineTable(t) => t.despan(input), | 
 |         } | 
 |     } | 
 | } | 
 |  | 
 | impl FromStr for Value { | 
 |     type Err = crate::TomlError; | 
 |  | 
 |     /// Parses a value from a &str | 
 |     fn from_str(s: &str) -> Result<Self, Self::Err> { | 
 |         parser::parse_value(s) | 
 |     } | 
 | } | 
 |  | 
 | impl<'b> From<&'b Value> for Value { | 
 |     fn from(s: &'b Value) -> Self { | 
 |         s.clone() | 
 |     } | 
 | } | 
 |  | 
 | impl<'b> From<&'b str> for Value { | 
 |     fn from(s: &'b str) -> Self { | 
 |         s.to_owned().into() | 
 |     } | 
 | } | 
 |  | 
 | impl<'b> From<&'b String> for Value { | 
 |     fn from(s: &'b String) -> Self { | 
 |         s.to_owned().into() | 
 |     } | 
 | } | 
 |  | 
 | impl From<String> for Value { | 
 |     fn from(s: String) -> Self { | 
 |         Value::String(Formatted::new(s)) | 
 |     } | 
 | } | 
 |  | 
 | impl<'b> From<&'b InternalString> for Value { | 
 |     fn from(s: &'b InternalString) -> Self { | 
 |         s.as_str().into() | 
 |     } | 
 | } | 
 |  | 
 | impl From<InternalString> for Value { | 
 |     fn from(s: InternalString) -> Self { | 
 |         s.as_str().into() | 
 |     } | 
 | } | 
 |  | 
 | impl From<i64> for Value { | 
 |     fn from(i: i64) -> Self { | 
 |         Value::Integer(Formatted::new(i)) | 
 |     } | 
 | } | 
 |  | 
 | impl From<f64> for Value { | 
 |     fn from(f: f64) -> Self { | 
 |         Value::Float(Formatted::new(f)) | 
 |     } | 
 | } | 
 |  | 
 | impl From<bool> for Value { | 
 |     fn from(b: bool) -> Self { | 
 |         Value::Boolean(Formatted::new(b)) | 
 |     } | 
 | } | 
 |  | 
 | impl From<Datetime> for Value { | 
 |     fn from(d: Datetime) -> Self { | 
 |         Value::Datetime(Formatted::new(d)) | 
 |     } | 
 | } | 
 |  | 
 | impl From<Date> for Value { | 
 |     fn from(d: Date) -> Self { | 
 |         let d: Datetime = d.into(); | 
 |         d.into() | 
 |     } | 
 | } | 
 |  | 
 | impl From<Time> for Value { | 
 |     fn from(d: Time) -> Self { | 
 |         let d: Datetime = d.into(); | 
 |         d.into() | 
 |     } | 
 | } | 
 |  | 
 | impl From<Array> for Value { | 
 |     fn from(array: Array) -> Self { | 
 |         Value::Array(array) | 
 |     } | 
 | } | 
 |  | 
 | impl From<InlineTable> for Value { | 
 |     fn from(table: InlineTable) -> Self { | 
 |         Value::InlineTable(table) | 
 |     } | 
 | } | 
 |  | 
 | impl<V: Into<Value>> FromIterator<V> for Value { | 
 |     fn from_iter<I>(iter: I) -> Self | 
 |     where | 
 |         I: IntoIterator<Item = V>, | 
 |     { | 
 |         let array: Array = iter.into_iter().collect(); | 
 |         Value::Array(array) | 
 |     } | 
 | } | 
 |  | 
 | impl<K: Into<Key>, V: Into<Value>> FromIterator<(K, V)> for Value { | 
 |     fn from_iter<I>(iter: I) -> Self | 
 |     where | 
 |         I: IntoIterator<Item = (K, V)>, | 
 |     { | 
 |         let table: InlineTable = iter.into_iter().collect(); | 
 |         Value::InlineTable(table) | 
 |     } | 
 | } | 
 |  | 
 | impl std::fmt::Display for Value { | 
 |     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { | 
 |         crate::encode::Encode::encode(self, f, None, ("", "")) | 
 |     } | 
 | } | 
 |  | 
 | // `key1 = value1` | 
 | pub(crate) const DEFAULT_VALUE_DECOR: (&str, &str) = (" ", ""); | 
 | // `{ key = value }` | 
 | pub(crate) const DEFAULT_TRAILING_VALUE_DECOR: (&str, &str) = (" ", " "); | 
 | // `[value1, value2]` | 
 | pub(crate) const DEFAULT_LEADING_VALUE_DECOR: (&str, &str) = ("", ""); | 
 |  | 
 | #[cfg(test)] | 
 | mod tests { | 
 |     use super::*; | 
 |  | 
 |     #[test] | 
 |     fn from_iter_formatting() { | 
 |         let features = vec!["node".to_owned(), "mouth".to_owned()]; | 
 |         let features: Value = features.iter().cloned().collect(); | 
 |         assert_eq!(features.to_string(), r#"["node", "mouth"]"#); | 
 |     } | 
 | } |