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use crate::ast;
use crate::{Parse, ParseError, Parser, Spanned, ToTokens};
/// An expression to construct a literal tuple.
///
/// # Examples
///
/// ```rust
/// use rune::{testing, ast};
///
/// testing::roundtrip::<ast::ExprTuple>("(1, \"two\")");
/// testing::roundtrip::<ast::ExprTuple>("(1, 2,)");
/// testing::roundtrip::<ast::ExprTuple>("(1, 2, foo())");
/// ```
#[derive(Debug, Clone, PartialEq, Eq, Parse, ToTokens, Spanned)]
pub struct ExprTuple {
/// Attributes associated with tuple.
#[rune(iter, meta)]
pub attributes: Vec<ast::Attribute>,
/// Items in the tuple.
pub items: ast::Parenthesized<ast::Expr, T![,]>,
}
impl ExprTuple {
/// Start parsing literal tuple from the middle of an expression.
pub fn parse_from_first_expr(
parser: &mut Parser<'_>,
attributes: Vec<ast::Attribute>,
open: ast::OpenParen,
expr: ast::Expr,
) -> Result<Self, ParseError> {
Ok(Self {
attributes,
items: ast::Parenthesized::parse_from_first(parser, open, expr)?,
})
}
}