refactor: move ide_assist::utils::suggest_name to ide-db

crates/ide-assists/src/handlers/extract_variable.rs

@@ -1,4 +1,5 @@
 use hir::TypeInfo;
+use ide_db::syntax_helpers::suggest_name;
 use syntax::{
     ast::{self, edit::IndentLevel, edit_in_place::Indent, make, AstNode, HasName},
     ted, NodeOrToken,
@@ -6,7 +7,7 @@ use syntax::{
     SyntaxNode, T,
 };
 
-use crate::{utils::suggest_name, AssistContext, AssistId, AssistKind, Assists};
+use crate::{AssistContext, AssistId, AssistKind, Assists};
 
 // Assist: extract_variable
 //

crates/ide-assists/src/handlers/generate_delegate_trait.rs

@@ -2,13 +2,14 @@ use std::ops::Not;
 
 use crate::{
     assist_context::{AssistContext, Assists},
-    utils::{convert_param_list_to_arg_list, suggest_name},
+    utils::convert_param_list_to_arg_list,
 };
 use either::Either;
 use hir::{db::HirDatabase, HasVisibility};
 use ide_db::{
     assists::{AssistId, GroupLabel},
     path_transform::PathTransform,
+    syntax_helpers::suggest_name,
     FxHashMap, FxHashSet,
 };
 use itertools::Itertools;

crates/ide-assists/src/handlers/introduce_named_generic.rs

@@ -1,9 +1,10 @@
+use ide_db::syntax_helpers::suggest_name;
 use syntax::{
     ast::{self, edit_in_place::GenericParamsOwnerEdit, make, AstNode, HasGenericParams},
     ted,
 };
 
-use crate::{utils::suggest_name, AssistContext, AssistId, AssistKind, Assists};
+use crate::{AssistContext, AssistId, AssistKind, Assists};
 
 // Assist: introduce_named_generic
 //

crates/ide-assists/src/handlers/replace_is_method_with_if_let_method.rs

@@ -1,9 +1,10 @@
+use ide_db::syntax_helpers::suggest_name;
 use syntax::{
     ast::{self, make, AstNode},
     ted,
 };
 
-use crate::{utils::suggest_name, AssistContext, AssistId, AssistKind, Assists};
+use crate::{AssistContext, AssistId, AssistKind, Assists};
 
 // Assist: replace_is_some_with_if_let_some
 //

crates/ide-assists/src/utils.rs

@@ -23,7 +23,6 @@ use crate::assist_context::{AssistContext, SourceChangeBuilder};
 
 mod gen_trait_fn_body;
 pub(crate) mod ref_field_expr;
-pub(crate) mod suggest_name;
 
 pub(crate) fn unwrap_trivial_block(block_expr: ast::BlockExpr) -> ast::Expr {
     extract_trivial_expression(&block_expr)

crates/ide-db/src/lib.rs

@@ -38,6 +38,7 @@ pub mod syntax_helpers {
     pub mod format_string_exprs;
     pub use hir::insert_whitespace_into_node;
     pub mod node_ext;
+    pub mod suggest_name;
 
     pub use parser::LexedStr;
 }

crates/ide-db/src/syntax_helpers/suggest_name.rs

@@ -1,14 +1,16 @@
 //! This module contains functions to suggest names for expressions, functions and other items
 
 use hir::Semantics;
-use ide_db::{FxHashSet, RootDatabase};
 use itertools::Itertools;
+use rustc_hash::FxHashSet;
 use stdx::to_lower_snake_case;
 use syntax::{
     ast::{self, HasName},
     match_ast, AstNode, Edition, SmolStr,
 };
 
+use crate::RootDatabase;
+
 /// Trait names, that will be ignored when in `impl Trait` and `dyn Trait`
 const USELESS_TRAITS: &[&str] = &["Send", "Sync", "Copy", "Clone", "Eq", "PartialEq"];
 
@@ -66,10 +68,7 @@ const USELESS_METHODS: &[&str] = &[
 /// The function checks if the name conflicts with existing generic parameters.
 /// If so, it will try to resolve the conflict by adding a number suffix, e.g.
 /// `T`, `T0`, `T1`, ...
-pub(crate) fn for_unique_generic_name(
+pub fn for_unique_generic_name(name: &str, existing_params: &ast::GenericParamList) -> SmolStr {
-    name: &str,
-    existing_params: &ast::GenericParamList,
-) -> SmolStr {
     let param_names = existing_params
         .generic_params()
         .map(|param| match param {
@@ -101,7 +100,7 @@ pub(crate) fn for_unique_generic_name(
 ///
 /// If the name conflicts with existing generic parameters, it will try to
 /// resolve the conflict with `for_unique_generic_name`.
-pub(crate) fn for_impl_trait_as_generic(
+pub fn for_impl_trait_as_generic(
     ty: &ast::ImplTraitType,
     existing_params: &ast::GenericParamList,
 ) -> SmolStr {
@@ -132,7 +131,7 @@ pub(crate) fn for_impl_trait_as_generic(
 ///
 /// Currently it sticks to the first name found.
 // FIXME: Microoptimize and return a `SmolStr` here.
-pub(crate) fn for_variable(expr: &ast::Expr, sema: &Semantics<'_, RootDatabase>) -> String {
+pub fn for_variable(expr: &ast::Expr, sema: &Semantics<'_, RootDatabase>) -> String {
     // `from_param` does not benefit from stripping
     // it need the largest context possible
     // so we check firstmost
@@ -184,7 +183,7 @@ fn normalize(name: &str) -> Option<String> {
 
 fn is_valid_name(name: &str) -> bool {
     matches!(
-        ide_db::syntax_helpers::LexedStr::single_token(syntax::Edition::CURRENT_FIXME, name),
+        super::LexedStr::single_token(syntax::Edition::CURRENT_FIXME, name),
         Some((syntax::SyntaxKind::IDENT, _error))
     )
 }