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use crate::nodes::InnerNode;
use crate::nodes::InspectVec;
use crate::source::Range;
use crate::Node;
/// Represents a constant assignment (i.e. `A = 1`)
#[derive(Debug, Clone, PartialEq)]
pub struct Casgn {
/// Scope where the constant is defined:
/// 1. `Some(Const("A"))` for `A::B = 1`
/// 2. `None` if it's defined in the current scope (i.e. `A = 1`)
/// 3. `Some(Cbase)` if it's defined in the global scope (i.e. `::A = 1`)
pub scope: Option<Node>,
/// Name of the constant, `String("A")` for `A = 1`
pub name: String,
/// Value that is assigned to a constant, `Int("1")` for `A = 1`.
///
/// **Note**: `None` if constant assignment is a part of the multi-assignment.
/// In such case `value` belongs to `Masgn` node of the multi-assignment.
pub value: Option<Node>,
/// Location of the `::` operator
///
/// ```text
/// A::B = 1
/// ~~
///
/// ::A = 1
/// ~~
/// ```
///
/// `None` if the constant is defined in the current scope
pub double_colon_l: Option<Range>,
/// Location of the constant name
///
/// ```text
/// A::CONST = 1
/// ~~~~~
/// ```
pub name_l: Range,
/// Location of the `=` operator
///
/// ```text
/// A = 1
/// ~
/// ```
///
/// `None` if constant assignment is a part of the multi-assignment.
/// In such case `=` belongs to a `Masgn` node
pub operator_l: Option<Range>,
/// Location of the full expression
///
/// ```text
/// A = 1
/// ~~~~~
/// ```
pub expression_l: Range,
}
impl InnerNode for Casgn {
fn expression(&self) -> &Range {
&self.expression_l
}
fn inspected_children(&self, indent: usize) -> Vec<String> {
let mut result = InspectVec::new(indent);
result.push_maybe_node_or_nil(&self.scope);
result.push_str(&self.name);
result.push_maybe_node(&self.value);
result.strings()
}
fn str_type(&self) -> &'static str {
"casgn"
}
fn print_with_locs(&self) {
println!("{}", self.inspect(0));
self.expression_l.print("expression");
if let Some(range) = &self.operator_l {
range.print("operator");
}
self.name_l.print("name");
if let Some(range) = &self.double_colon_l {
range.print("double_colon");
}
if let Some(node) = &self.value {
node.inner_ref().print_with_locs();
}
if let Some(node) = &self.scope {
node.inner_ref().print_with_locs();
}
}
}