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Parser: Parse functions

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Olivier Goffart 2022-11-30 17:00:24 +01:00 • committed by Olivier Goffart
parent 18bf24e7bf
commit 851a910e41
7 changed files with 175 additions and 18 deletions
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39
internal/compiler/parser/element.rs
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@ -58,6 +58,9 @@ pub fn parse_element_content(p: &mut impl Parser) {
SyntaxKind::Identifier if p.peek().as_str() == "callback" => {
parse_callback_declaration(&mut *p);
}
SyntaxKind::Identifier if p.peek().as_str() == "function" => {
parse_function(&mut *p);
}
SyntaxKind::Identifier | SyntaxKind::Star if p.peek().as_str() == "animate" => {
parse_property_animation(&mut *p);
}
@ -553,3 +556,39 @@ fn parse_transition_inner(p: &mut impl Parser) -> bool {
}
}
}
#[cfg_attr(test, parser_test)]
/// ```test,Function
/// function foo() {}
/// function bar(xx : int) { yy = xx; }
/// function bar(xx : int,) -> int { return 42; }
/// ```
fn parse_function(p: &mut impl Parser) {
debug_assert_eq!(p.peek().as_str(), "function");
let mut p = p.start_node(SyntaxKind::Function);
p.consume(); // "function"
{
let mut p = p.start_node(SyntaxKind::DeclaredIdentifier);
p.expect(SyntaxKind::Identifier);
}
if p.expect(SyntaxKind::LParent) {
while p.peek().kind() != SyntaxKind::RParent {
let mut p = p.start_node(SyntaxKind::ArgumentDeclaration);
{
let mut p = p.start_node(SyntaxKind::DeclaredIdentifier);
p.expect(SyntaxKind::Identifier);
}
p.expect(SyntaxKind::Colon);
parse_type(&mut *p);
if !p.test(SyntaxKind::Comma) {
break;
}
}
p.expect(SyntaxKind::RParent);
if p.test(SyntaxKind::Arrow) {
let mut p = p.start_node(SyntaxKind::ReturnType);
parse_type(&mut *p);
}
}
parse_code_block(&mut *p);
}