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still working on function parser

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LunarAkai 2025-08-10 15:43:24 +02:00
commit a4b7b56d67
1 changed files with 13 additions and 10 deletions
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21
src/language_frontend/abstract_syntax_tree/parser.rs
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@ -126,12 +126,17 @@ where
let return_type_parser = just(Token::Colon).ignore_then(type_parser.clone()).or_not();
let return_expr = just(Token::Return)
.ignore_then(expr.clone())
.map(|expr| (expr));
//---------------------------------------------------------------------------------------
// Function Parser
//---------------------------------------------------------------------------------------
let fun = just(Token::Fun)
.ignore_then(ident) // function name
.then(
// arguments
ident
.then_ignore(just(Token::Colon))
.then(type_parser.clone())
@ -141,16 +146,18 @@ where
.delimited_by(just(Token::LParen), just(Token::RParen))
.or_not(),
)
.then(return_type_parser.clone())
.then_ignore(just(Token::LBrace))
.then_ignore(just(Token::NewLine).repeated())
.then(return_type_parser.clone()) // return type
.then_ignore(just(Token::LBrace)) // {
.then_ignore(just(Token::NewLine).repeated().or_not())
.then_ignore(return_expr.or_not())
.then(
expr.clone()
.then_ignore(just(Token::NewLine))
.repeated()
.collect::<Vec<_>>(),
)
.then_ignore(just(Token::RBrace))
.then_ignore(just(Token::NewLine).repeated().or_not())
.then_ignore(just(Token::RBrace)) // }
.map(|(((name, params), return_ty), stmts)| {
Expr::FunctionExpr(Function {
name: name,
@ -287,7 +294,7 @@ mod tests {
fun_that_returns_int.clone().unwrap(),
vec![Expr::FunctionExpr(Function {
name: String::from("returnsInt"),
params: None,
params: Some([].to_vec()),
return_type: Some(Type::Integer),
body: Some(vec![Expr::IntLiteral(12)]),
body_expr: Some(Box::new(Expr::ReturnExpr)),
@ -295,7 +302,3 @@ mod tests {
)
}
}
/*
var x = 10\nvar y = 5\n{\n var z = 7\n}\n10 + 10\n10 - 5\n5 * 5\n10 / 2
*/