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use crate::ast;
use crate::{Parse, ParseError, Parser, Spanned, ToTokens};
/// A local variable declaration `let <pattern> = <expr>;`
///
/// # Examples
///
/// ```rust
/// use rune::{testing, ast};
///
/// testing::roundtrip::<ast::Local>("let x = 1;");
/// testing::roundtrip::<ast::Local>("#[attr] let a = f();");
/// testing::roundtrip::<ast::Local>("let a = b{}().foo[0].await;");
/// ```
#[derive(Debug, Clone, PartialEq, Eq, ToTokens, Parse, Spanned)]
pub struct Local {
/// The attributes for the let expression
#[rune(iter, meta)]
pub attributes: Vec<ast::Attribute>,
/// The `let` keyword.
pub let_token: T![let],
/// The name of the binding.
pub pat: ast::Pat,
/// The equality keyword.
pub eq: T![=],
/// The expression the binding is assigned to.
#[rune(parse_with = "parse_expr")]
pub expr: ast::Expr,
/// Trailing semicolon of the local.
pub semi: T![;],
}
fn parse_expr(p: &mut Parser<'_>) -> Result<ast::Expr, ParseError> {
Ok(ast::Expr::parse_with(
p,
ast::expr::EagerBrace(true),
ast::expr::EagerBinary(true),
ast::expr::Callable(true),
)?)
}