Newbie question about the AST representation

Hi , dear all, I'm totally new for Rust and I'm reading the rustc source to learn how a rust source is represented by AST. Take the following example

fn main() {
  if 1==1 {};

my questtion is how the if is represented in AST? I can't find out a StmtKind for it. It seems it is not one of the StmtKind nor one of the ItemKind. Many thanks!!!

It's not a statement nor an item, it's an expression. Rust is an expression language: almost any construct that actively does something at runtime can have a value, and so is an expression, not a statement.

cool! love it! thanks!

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