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use crate::nodes::InnerNode; use crate::nodes::InspectVec; use crate::source::Range; use crate::StringValue; /// Represents a plain symbol literal (i.e. `:foo`) /// /// Note that `:` in `{ foo: bar }` belongs to a `pair` node. #[derive(Debug, Clone, PartialEq)] pub struct Sym { /// Value of the symbol literal /// /// Note that it's a `StringValue`, not a `String`. /// The reason is that you can get UTF-8 incompatible strings /// from a valid UTF-8 source using escape sequences like `"\xFF"` /// /// These "\", "x", "F", "F" chars are valid separately, but together /// they construct a char with code = 255 that is invalid for UTF-8. /// /// You can use `to_string_lossy` or `to_string` methods to get a raw symbol value. pub name: StringValue, /// Location of the symbol begin /// /// ```text /// :foo /// ~ /// ``` /// /// `None` if symbol is a label (`{ foo: 1 }`) or a part of the symbols array (`%i[foo bar baz]`) pub begin_l: Option<Range>, /// Location of the symbol end /// /// ```text /// { 'foo': 1 } /// ~ /// ``` /// /// `None` if symbol is **not** a string label (`:foo`) or a part of the symbols array (`%i[foo bar baz]`) pub end_l: Option<Range>, /// Location of the full expression /// /// ```text /// :foo /// ~~~~ /// /// { foo: 1 } /// ~~~~ /// /// %i[foo] /// ~~~ /// ``` pub expression_l: Range, } impl InnerNode for Sym { fn expression(&self) -> &Range { &self.expression_l } fn inspected_children(&self, indent: usize) -> Vec<String> { let mut result = InspectVec::new(indent); result.push_string_value(&self.name); result.strings() } fn str_type(&self) -> &'static str { "sym" } fn print_with_locs(&self) { println!("{}", self.inspect(0)); self.expression_l.print("expression"); if let Some(range) = &self.end_l { range.print("end"); } if let Some(range) = &self.begin_l { range.print("begin"); } } }