ast: introduce Kind and cast

Browse Source

This begins the process of replacing the underlying Node "type" notion with
Kind. A Kind is an Enum of all of the possible node types, except with
Token and Keyword collapsed into one.

The idea is, rather than this:

    if node.type() == Type::Argument {
	    let arg = node.as_argument().unwrap();
		...
	}

we can instead do this:

    if let Kind::Argument(arg) = node.kind() {
	    // we already have arg
	}

There is also a cast() function:

    let arg: Option<Argument> = node.cast()

which may be convenient in some places.

The big thing we lose is the ability to talk about a Node's type without
actually having a Node. But this turns out to not be an issue in practice.

Future commits will begin adopting Kind.

...

This commit is contained in:

Peter Ammon

2025-04-26 15:03:40 -07:00

parent 0348389195

commit 01bd854f25

1 changed files with 539 additions and 510 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download Patch File Download Diff File Expand all files Collapse all files

1049

src/ast.rs

File diff suppressed because it is too large Load Diff