Remove Int wrapper type from parser (#7577)

## Summary

This is only used for the `level` field in relative imports (e.g., `from
..foo import bar`). It seems unnecessary to use a wrapper here, so this
PR changes to a `u32` directly.

crates/ruff_linter/src/checkers/ast/analyze/statement.rs

@@ -695,7 +695,7 @@ pub(crate) fn statement(stmt: &Stmt, checker: &mut Checker) {
             },
         ) => {
             let module = module.as_deref();
-            let level = level.map(|level| level.to_u32());
+            let level = *level;
             if checker.enabled(Rule::ModuleImportNotAtTopOfFile) {
                 pycodestyle::rules::module_import_not_at_top_of_file(checker, stmt);
             }

crates/ruff_linter/src/checkers/ast/mod.rs

@@ -358,7 +358,7 @@ where
                 range: _,
             }) => {
                 let module = module.as_deref();
-                let level = level.map(|level| level.to_u32());
+                let level = *level;
                 for alias in names {
                     if let Some("__future__") = module {
                         let name = alias.asname.as_ref().unwrap_or(&alias.name);

crates/ruff_linter/src/checkers/imports.rs

@@ -44,7 +44,7 @@ fn extract_import_map(path: &Path, package: Option<&Path>, blocks: &[&Block]) ->
                 level,
                 range: _,
             }) => {
-                let level = level.map_or(0, |level| level.to_usize());
+                let level = level.unwrap_or_default() as usize;
                 let module = if let Some(module) = module {
                     let module: &String = module.as_ref();
                     if level == 0 {
@@ -95,6 +95,7 @@ pub(crate) fn check_imports(
         tracker.visit_body(python_ast);
         tracker
     };
+
     let blocks: Vec<&Block> = tracker.iter().collect();
 
     // Enforce import rules.

crates/ruff_linter/src/importer/mod.rs

@@ -308,7 +308,7 @@ impl<'a> Importer<'a> {
                 range: _,
             }) = stmt
             {
-                if level.map_or(true, |level| level.to_u32() == 0)
+                if level.map_or(true, |level| level == 0)
                     && name.as_ref().is_some_and(|name| name == module)
                     && names.iter().all(|alias| alias.name.as_str() != "*")
                 {

crates/ruff_linter/src/rules/flake8_tidy_imports/rules/relative_imports.rs

@@ -1,4 +1,4 @@
-use ruff_python_ast::{self as ast, Identifier, Int, Stmt};
+use ruff_python_ast::{self as ast, Identifier, Stmt};
 use ruff_text_size::{Ranged, TextRange};
 
 use ruff_diagnostics::{AutofixKind, Diagnostic, Edit, Fix, Violation};
@@ -99,7 +99,7 @@ fn fix_banned_relative_import(
             TextRange::default(),
         )),
         names: names.clone(),
-        level: Some(Int::new(0)),
+        level: Some(0),
         range: TextRange::default(),
     };
     let content = generator.stmt(&node.into());

crates/ruff_linter/src/rules/isort/annotate.rs

@@ -118,7 +118,7 @@ pub(crate) fn annotate_imports<'a>(
                     AnnotatedImport::ImportFrom {
                         module: module.as_deref(),
                         names: aliases,
-                        level: level.map(|level| level.to_u32()),
+                        level: *level,
                         trailing_comma: if split_on_trailing_comma {
                             trailing_comma(import, locator, source_type)
                         } else {

crates/ruff_linter/src/rules/isort/rules/add_required_imports.rs

@@ -75,7 +75,7 @@ fn includes_import(stmt: &Stmt, target: &AnyImport) -> bool {
                 return false;
             };
             module.as_deref() == target.module
-                && level.map(|level| level.to_u32()) == target.level
+                && *level == target.level
                 && names.iter().any(|alias| {
                     &alias.name == target.name.name
                         && alias.asname.as_deref() == target.name.as_name
@@ -166,7 +166,7 @@ pub(crate) fn add_required_imports(
                                     name: name.name.as_str(),
                                     as_name: name.asname.as_deref(),
                                 },
-                                level: level.map(|level| level.to_u32()),
+                                level: *level,
                             }),
                             python_ast,
                             locator,

crates/ruff_linter/src/rules/pylint/rules/manual_import_from.rs

@@ -1,4 +1,4 @@
-use ruff_python_ast::{self as ast, Alias, Identifier, Int, Stmt};
+use ruff_python_ast::{self as ast, Alias, Identifier, Stmt};
 use ruff_text_size::{Ranged, TextRange};
 
 use ruff_diagnostics::{AutofixKind, Diagnostic, Edit, Fix, Violation};
@@ -80,7 +80,7 @@ pub(crate) fn manual_from_import(
                     asname: None,
                     range: TextRange::default(),
                 }],
-                level: Some(Int::new(0)),
+                level: Some(0),
                 range: TextRange::default(),
             };
             diagnostic.set_fix(Fix::automatic(Edit::range_replacement(

crates/ruff_linter/src/rules/pyupgrade/rules/deprecated_c_element_tree.rs

@@ -71,7 +71,7 @@ pub(crate) fn deprecated_c_element_tree(checker: &mut Checker, stmt: &Stmt) {
             level,
             range: _,
         }) => {
-            if level.is_some_and(|level| level.to_u32() > 0) {
+            if level.is_some_and(|level| level > 0) {
                 // Ex) `import .xml.etree.cElementTree as ET`
             } else if let Some(module) = module {
                 if module == "xml.etree.cElementTree" {

crates/ruff_linter/src/rules/pyupgrade/rules/deprecated_mock_import.rs

@@ -323,7 +323,7 @@ pub(crate) fn deprecated_mock_import(checker: &mut Checker, stmt: &Stmt) {
             level,
             ..
         }) => {
-            if level.is_some_and(|level| level.to_u32() > 0) {
+            if level.is_some_and(|level| level > 0) {
                 return;
             }