58 lines
1.2 KiB
Rust
58 lines
1.2 KiB
Rust
use crate::span::{HasSpan, Span};
|
|
|
|
use super::{Expr, Ident, Space};
|
|
|
|
#[derive(Debug, Clone)]
|
|
pub enum Var {
|
|
/// `[a]`
|
|
///
|
|
/// Structure: `[ s0 index s1 ]`
|
|
Access {
|
|
s0: Space,
|
|
index: Box<Expr>,
|
|
s1: Space,
|
|
span: Span,
|
|
},
|
|
|
|
/// - `[a] = b`
|
|
/// - `local [a] = b`
|
|
///
|
|
/// Structure: `local [ s0 index s1 ] s2 = s3 value`
|
|
Assign {
|
|
local: Option<Space>,
|
|
s0: Space,
|
|
index: Box<Expr>,
|
|
s1: Space,
|
|
s2: Space,
|
|
s3: Space,
|
|
value: Box<Expr>,
|
|
span: Span,
|
|
},
|
|
|
|
/// `foo`
|
|
AccessIdent(Ident),
|
|
|
|
/// - `foo = a`
|
|
/// - `local foo = a`
|
|
///
|
|
/// Structure: `local name s0 = s1 value`
|
|
AssignIdent {
|
|
local: Option<Space>,
|
|
name: Ident,
|
|
s0: Space,
|
|
s1: Space,
|
|
value: Box<Expr>,
|
|
span: Span,
|
|
},
|
|
}
|
|
|
|
impl HasSpan for Var {
|
|
fn span(&self) -> Span {
|
|
match self {
|
|
Self::Access { span, .. } => *span,
|
|
Self::Assign { span, .. } => *span,
|
|
Self::AccessIdent(ident) => ident.span(),
|
|
Self::AssignIdent { span, .. } => *span,
|
|
}
|
|
}
|
|
}
|