Remove `core` module from `ruff_python_formatter` (#3373)

crates/ruff_python_formatter/src/attachment.rs

@@ -1,5 +1,5 @@
-use crate::core::visitor;
+use crate::cst::visitor;
-use crate::core::visitor::Visitor;
+use crate::cst::visitor::Visitor;
 use crate::cst::{
     Alias, Arg, Body, BoolOp, CmpOp, Excepthandler, Expr, Keyword, Operator, Pattern, SliceIndex,
     Stmt, UnaryOp,

crates/ruff_python_formatter/src/core/mod.rs

@@ -1,2 +0,0 @@
-pub mod helpers;
-pub mod visitor;

crates/ruff_python_formatter/src/cst/mod.rs

@@ -9,9 +9,12 @@ use rustpython_parser::Mode;
 use ruff_python_ast::source_code::Locator;
 use ruff_python_ast::types::Range;
 
-use crate::core::helpers::{expand_indented_block, find_tok, is_elif};
+use crate::cst::helpers::{expand_indented_block, find_tok, is_elif};
 use crate::trivia::{Parenthesize, Trivia};
 
+pub mod helpers;
+pub mod visitor;
+
 type Ident = String;
 
 #[derive(Clone, Debug, PartialEq)]

crates/ruff_python_formatter/src/lib.rs

@@ -13,7 +13,6 @@ use crate::parentheses::normalize_parentheses;
 mod attachment;
 pub mod cli;
 pub mod context;
-mod core;
 mod cst;
 mod format;
 mod newlines;

crates/ruff_python_formatter/src/newlines.rs

@@ -1,7 +1,7 @@
 use rustpython_parser::ast::Constant;
 
-use crate::core::visitor;
+use crate::cst::visitor;
-use crate::core::visitor::Visitor;
+use crate::cst::visitor::Visitor;
 use crate::cst::{
     Alias, Arg, BoolOp, CmpOp, Excepthandler, ExcepthandlerKind, Expr, ExprKind, Keyword, Operator,
     Pattern, SliceIndex, Stmt, StmtKind, UnaryOp,

crates/ruff_python_formatter/src/parentheses.rs

@@ -2,9 +2,9 @@ use rustpython_parser::ast::Constant;
 
 use ruff_python_ast::source_code::Locator;
 
-use crate::core::helpers::is_radix_literal;
+use crate::cst::helpers::is_radix_literal;
-use crate::core::visitor;
+use crate::cst::visitor;
-use crate::core::visitor::Visitor;
+use crate::cst::visitor::Visitor;
 use crate::cst::{Expr, ExprKind, Stmt, StmtKind};
 use crate::trivia::Parenthesize;