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use super::Value; use mapping::Mapping; // Implement a bunch of conversion to make it easier to create YAML values // on the fly. macro_rules! from_number { ($($ty:ident)*) => { $( impl From<$ty> for Value { fn from(n: $ty) -> Self { Value::Number(n.into()) } } )* }; } from_number! { i8 i16 i32 i64 isize u8 u16 u32 u64 usize f32 f64 } impl From<bool> for Value { /// Convert boolean to `Value` /// /// # Examples /// /// ```rust /// # extern crate serde_yaml; /// # /// # fn main() { /// use serde_yaml::Value; /// /// let b = false; /// let x: Value = b.into(); /// # } /// ``` fn from(f: bool) -> Self { Value::Bool(f) } } impl From<String> for Value { /// Convert `String` to `Value` /// /// # Examples /// /// ```rust /// # extern crate serde_yaml; /// # /// # fn main() { /// use serde_yaml::Value; /// /// let s: String = "lorem".to_string(); /// let x: Value = s.into(); /// # } /// ``` fn from(f: String) -> Self { Value::String(f) } } impl<'a> From<&'a str> for Value { /// Convert string slice to `Value` /// /// # Examples /// /// ```rust /// # extern crate serde_yaml; /// # /// # fn main() { /// use serde_yaml::Value; /// /// let s: &str = "lorem"; /// let x: Value = s.into(); /// # } /// ``` fn from(f: &str) -> Self { Value::String(f.to_string()) } } use std::borrow::Cow; impl<'a> From<Cow<'a, str>> for Value { /// Convert copy-on-write string to `Value` /// /// # Examples /// /// ```rust /// # extern crate serde_yaml; /// # /// # fn main() { /// use serde_yaml::Value; /// use std::borrow::Cow; /// /// let s: Cow<str> = Cow::Borrowed("lorem"); /// let x: Value = s.into(); /// # } /// ``` /// /// ```rust /// # extern crate serde_yaml; /// # /// # fn main() { /// use serde_yaml::Value; /// use std::borrow::Cow; /// /// let s: Cow<str> = Cow::Owned("lorem".to_string()); /// let x: Value = s.into(); /// # } /// ``` fn from(f: Cow<'a, str>) -> Self { Value::String(f.to_string()) } } impl From<Mapping> for Value { /// Convert map (with string keys) to `Value` /// /// # Examples /// /// ```rust /// # extern crate serde_yaml; /// # /// # fn main() { /// use serde_yaml::{Mapping, Value}; /// /// let mut m = Mapping::new(); /// m.insert("Lorem".into(), "ipsum".into()); /// let x: Value = m.into(); /// # } /// ``` fn from(f: Mapping) -> Self { Value::Mapping(f) } } impl<T: Into<Value>> From<Vec<T>> for Value { /// Convert a `Vec` to `Value` /// /// # Examples /// /// ```rust /// # extern crate serde_yaml; /// # /// # fn main() { /// use serde_yaml::Value; /// /// let v = vec!["lorem", "ipsum", "dolor"]; /// let x: Value = v.into(); /// # } /// ``` fn from(f: Vec<T>) -> Self { Value::Sequence(f.into_iter().map(Into::into).collect()) } } impl<'a, T: Clone + Into<Value>> From<&'a [T]> for Value { /// Convert a slice to `Value` /// /// # Examples /// /// ```rust /// # extern crate serde_yaml; /// # /// # fn main() { /// use serde_yaml::Value; /// /// let v: &[&str] = &["lorem", "ipsum", "dolor"]; /// let x: Value = v.into(); /// # } /// ``` fn from(f: &'a [T]) -> Self { Value::Sequence(f.into_iter().cloned().map(Into::into).collect()) } } use std::iter::FromIterator; impl<T: Into<Value>> FromIterator<T> for Value { /// Convert an iteratable type to a YAML sequence /// /// # Examples /// /// ```rust /// # extern crate serde_yaml; /// # /// # fn main() { /// use serde_yaml::Value; /// /// let v = std::iter::repeat(42).take(5); /// let x: Value = v.collect(); /// # } /// ``` /// /// ```rust /// # extern crate serde_yaml; /// # /// # fn main() { /// use serde_yaml::Value; /// /// let v: Vec<_> = vec!["lorem", "ipsum", "dolor"]; /// let x: Value = v.into_iter().collect(); /// # } /// ``` /// /// ```rust /// # extern crate serde_yaml; /// # /// # fn main() { /// use std::iter::FromIterator; /// use serde_yaml::Value; /// /// let x: Value = Value::from_iter(vec!["lorem", "ipsum", "dolor"]); /// # } /// ``` fn from_iter<I: IntoIterator<Item = T>>(iter: I) -> Self { let vec: Vec<Value> = iter.into_iter().map(|x| x.into()).collect(); Value::Sequence(vec) } }