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