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use std::fmt;
/// An immutable JSON source path.
#[derive(Default, Clone, Debug, PartialEq)]
pub struct Path(pub String);
impl Path {
/// Creates an empty JSON source path.
///
/// # Examples
///
/// Basic usage
///
/// ```rust
/// # use gltf_json::Path;
/// let path = Path::new();
/// assert_eq!("", path.as_str());
/// ```
pub fn new() -> Self {
Path(String::new())
}
/// Returns a new path ending with the given field.
///
/// # Examples
///
/// Basic usage
///
/// ```rust
/// # use gltf_json::Path;
/// let path = Path::new().field("foo");
/// assert_eq!("foo", path.as_str());
/// assert_eq!("foo.bar", path.field("bar").as_str());
/// ```
pub fn field(&self, name: &str) -> Self {
if self.0.is_empty() {
Path(name.to_string())
} else {
Path(format!("{}.{}", self.0, name))
}
}
/// Returns a new path ending with the given array index.
///
/// # Examples
///
/// Basic usage
///
/// ```rust
/// # use gltf_json::Path;
/// let path = Path::new().field("foo");
/// assert_eq!("foo[123]", path.index(123).as_str());
/// ```
pub fn index(&self, index: usize) -> Self {
Path(format!("{}[{}]", self.0, index))
}
/// Returns a new path ending with the given object key.
///
/// # Examples
///
/// Basic usage
///
/// ```rust
/// # use gltf_json::Path;
/// let path = Path::new().field("foo");
/// assert_eq!("foo[\"bar\"]", path.key("bar").as_str());
/// ```
pub fn key(&self, key: &str) -> Self {
Path(format!("{}[\"{}\"]", self.0, key))
}
/// Returns a view into the internal representation.
pub fn as_str(&self) -> &str {
&self.0
}
}
impl fmt::Display for Path {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "{}", self.0)
}
}