Function number_precedes_length

crates/csskit_spec_generator/src/codegen.rs:546–591

Recursively check if ` ` precedes ` ` in any defs.

(def: &Def)

/// Recursively check if `<number>` precedes `<length>` in any defs.
fn number_precedes_length(def: &Def) -> bool {
	match def {
		Def::Combinator(children, DefCombinatorStyle::Alternatives) => {
			let mut number_pos = None;
			let mut length_pos = None;

			for (i, child) in children.iter().enumerate() {
				match child {
					Def::Type(def_type) => {
						let ident = def_type.ident_str();
						if (ident == "Number" || ident == "Integer") && number_pos.is_none() {
							number_pos = Some(i);
						} else if (ident == "Length" || ident == "LengthPercentage" || ident == "LengthPercentageAuto")
							&& length_pos.is_none()
						{
							length_pos = Some(i);
						}
					}
					// Recursively check nested definitions
					_ => {
						if number_precedes_length(child) {
							return true;
						}
					}
				}
			}

			// If we found both and number comes first, flag it
			if let (Some(num_pos), Some(len_pos)) = (number_pos, length_pos)
				&& num_pos < len_pos
			{
				return true;
			}

			false
		}
		Def::Combinator(children, _) => children.iter().any(number_precedes_length),
		Def::Group(inner, _) => number_precedes_length(inner),
		Def::Optional(inner) => number_precedes_length(inner),
		Def::Multiplier(inner, _, _) => number_precedes_length(inner),
		Def::Function(_, inner) => number_precedes_length(inner),
		Def::AutoOr(inner) | Def::NoneOr(inner) | Def::AutoNoneOr(inner) => number_precedes_length(inner),
		// Leaf nodes don't contain the pattern
		_ => false,
	}
}

/// Determine which portion(s) of the box model a property affects based on its name
fn determine_box_portion(property_name: &str) -> Option<TokenStream> {