Vendor things

third-party/vendor/toml_edit/src/document.rs

@@ -0,0 +1,113 @@
+use std::str::FromStr;
+
+use crate::parser;
+use crate::table::Iter;
+use crate::{Item, RawString, Table};
+
+/// Type representing a TOML document
+#[derive(Debug, Clone)]
+pub struct Document {
+    pub(crate) root: Item,
+    // Trailing comments and whitespaces
+    pub(crate) trailing: RawString,
+    pub(crate) original: Option<String>,
+    pub(crate) span: Option<std::ops::Range<usize>>,
+}
+
+impl Document {
+    /// Creates an empty document
+    pub fn new() -> Self {
+        Default::default()
+    }
+
+    /// Returns a reference to the root item.
+    pub fn as_item(&self) -> &Item {
+        &self.root
+    }
+
+    /// Returns a mutable reference to the root item.
+    pub fn as_item_mut(&mut self) -> &mut Item {
+        &mut self.root
+    }
+
+    /// Returns a reference to the root table.
+    pub fn as_table(&self) -> &Table {
+        self.root.as_table().expect("root should always be a table")
+    }
+
+    /// Returns a mutable reference to the root table.
+    pub fn as_table_mut(&mut self) -> &mut Table {
+        self.root
+            .as_table_mut()
+            .expect("root should always be a table")
+    }
+
+    /// Returns an iterator over the root table.
+    pub fn iter(&self) -> Iter<'_> {
+        self.as_table().iter()
+    }
+
+    /// Set whitespace after last element
+    pub fn set_trailing(&mut self, trailing: impl Into<RawString>) {
+        self.trailing = trailing.into();
+    }
+
+    /// Whitespace after last element
+    pub fn trailing(&self) -> &RawString {
+        &self.trailing
+    }
+
+    /// # Panics
+    ///
+    /// If run on on a `Document` not generated by the parser
+    pub(crate) fn despan(&mut self) {
+        self.span = None;
+        self.root.despan(self.original.as_deref().unwrap());
+        self.trailing.despan(self.original.as_deref().unwrap());
+    }
+}
+
+impl Default for Document {
+    fn default() -> Self {
+        Self {
+            root: Item::Table(Table::with_pos(Some(0))),
+            trailing: Default::default(),
+            original: Default::default(),
+            span: Default::default(),
+        }
+    }
+}
+
+impl FromStr for Document {
+    type Err = crate::TomlError;
+
+    /// Parses a document from a &str
+    fn from_str(s: &str) -> Result<Self, Self::Err> {
+        let mut d = parser::parse_document(s)?;
+        d.despan();
+        Ok(d)
+    }
+}
+
+impl std::ops::Deref for Document {
+    type Target = Table;
+
+    fn deref(&self) -> &Self::Target {
+        self.as_table()
+    }
+}
+
+impl std::ops::DerefMut for Document {
+    fn deref_mut(&mut self) -> &mut Self::Target {
+        self.as_table_mut()
+    }
+}
+
+impl From<Table> for Document {
+    fn from(root: Table) -> Self {
+        Self {
+            root: Item::Table(root),
+            ..Default::default()
+        }
+    }
+}