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parser: support closures returning by ref

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Ryan Chandler 2022-09-15 00:45:33 +01:00
parent 630ad85f34
commit 95dbc4416e
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GPG Key ID: F113BCADDB3B0CCA
2 changed files with 29 additions and 2 deletions
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1
trunk_parser/src/ast.rs
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@ -453,6 +453,7 @@ pub enum Expression {
return_type: Option<Type>,
body: Block,
r#static: bool,
by_ref: bool,
},
ArrowFunction {
params: Vec<Param>,

30
trunk_parser/src/parser/mod.rs
View File

@ -1630,12 +1630,14 @@ impl Parser {
uses,
return_type,
body,
by_ref,
..
} => Expression::Closure {
params,
uses,
return_type,
body,
by_ref,
r#static: true,
},
_ => unreachable!(),
@ -1644,6 +1646,13 @@ impl Parser {
TokenKind::Function => {
self.next();
let by_ref = if self.current.kind == TokenKind::Ampersand {
self.next();
true
} else {
false
};
self.lparen()?;
let params = self.param_list()?;
@ -1715,6 +1724,7 @@ impl Parser {
return_type,
body,
r#static: false,
by_ref,
}
}
TokenKind::Fn => {
@ -3758,7 +3768,8 @@ mod tests {
uses: vec![],
return_type: None,
body: vec![],
r#static: false
r#static: false,
by_ref: false,
})],
);
}
@ -3784,7 +3795,8 @@ mod tests {
uses: vec![],
return_type: None,
body: vec![],
r#static: true
r#static: true,
by_ref: false,
})],
);
}
@ -3875,6 +3887,20 @@ mod tests {
}]);
}
#[test]
fn closure_returning_ref() {
assert_ast("<?php function &() {};", &[
expr!(Expression::Closure {
params: vec![],
body: vec![],
return_type: None,
r#static: false,
uses: vec![],
by_ref: true,
})
]);
}
fn assert_ast(source: &str, expected: &[Statement]) {
let mut lexer = Lexer::new(None);
let tokens = lexer.tokenize(source).unwrap();