Refactor path for imports extraction
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2b9b16cb45
commit
9b6db7bbd4
1 changed files with 92 additions and 20 deletions
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@ -1,10 +1,11 @@
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use ra_ide_db::imports_locator::ImportsLocator;
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use ra_ide_db::{imports_locator::ImportsLocator, RootDatabase};
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use ra_syntax::ast::{self, AstNode};
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use ra_syntax::ast::{self, AstNode};
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use crate::{
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use crate::{
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assist_ctx::{Assist, AssistCtx},
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assist_ctx::{Assist, AssistCtx},
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insert_use_statement, AssistId,
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insert_use_statement, AssistId,
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};
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};
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use hir::{db::HirDatabase, Adt, ModPath, Module, ModuleDef, PathResolution, SourceAnalyzer};
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use std::collections::BTreeSet;
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use std::collections::BTreeSet;
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// Assist: auto_import
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// Assist: auto_import
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@ -44,29 +45,13 @@ pub(crate) fn auto_import(ctx: AssistCtx) -> Option<Assist> {
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let source_analyzer = ctx.source_analyzer(&position, None);
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let source_analyzer = ctx.source_analyzer(&position, None);
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let module_with_name_to_import = source_analyzer.module()?;
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let module_with_name_to_import = source_analyzer.module()?;
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let name_ref_to_import =
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let import_candidate = ImportCandidate::new(&path_under_caret, &source_analyzer, ctx.db)?;
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path_under_caret.syntax().descendants().find_map(ast::NameRef::cast)?;
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let proposed_imports = import_candidate.search_for_imports(ctx.db, module_with_name_to_import);
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if source_analyzer
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.resolve_path(ctx.db, &name_ref_to_import.syntax().ancestors().find_map(ast::Path::cast)?)
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.is_some()
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{
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return None;
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}
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let name_to_import = name_ref_to_import.syntax().to_string();
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let proposed_imports = ImportsLocator::new(ctx.db)
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.find_imports(&name_to_import)
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.into_iter()
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.filter_map(|module_def| module_with_name_to_import.find_use_path(ctx.db, module_def))
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.filter(|use_path| !use_path.segments.is_empty())
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.take(20)
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.collect::<BTreeSet<_>>();
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if proposed_imports.is_empty() {
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if proposed_imports.is_empty() {
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return None;
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return None;
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}
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}
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let mut group = ctx.add_assist_group(format!("Import {}", name_to_import));
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let mut group = ctx.add_assist_group(format!("Import {}", import_candidate.get_search_query()));
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for import in proposed_imports {
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for import in proposed_imports {
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group.add_assist(AssistId("auto_import"), format!("Import `{}`", &import), |edit| {
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group.add_assist(AssistId("auto_import"), format!("Import `{}`", &import), |edit| {
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edit.target(path_under_caret.syntax().text_range());
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edit.target(path_under_caret.syntax().text_range());
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@ -81,6 +66,92 @@ pub(crate) fn auto_import(ctx: AssistCtx) -> Option<Assist> {
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group.finish()
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group.finish()
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}
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}
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#[derive(Debug)]
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// TODO kb rustdocs
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enum ImportCandidate {
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UnqualifiedName(ast::NameRef),
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QualifierStart(ast::NameRef),
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TraitFunction(Adt, ast::PathSegment),
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}
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impl ImportCandidate {
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// TODO kb refactor this mess
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fn new(
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path_under_caret: &ast::Path,
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source_analyzer: &SourceAnalyzer,
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db: &impl HirDatabase,
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) -> Option<Self> {
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if source_analyzer.resolve_path(db, path_under_caret).is_some() {
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return None;
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}
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let segment = path_under_caret.segment()?;
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if let Some(qualifier) = path_under_caret.qualifier() {
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let qualifier_start = qualifier.syntax().descendants().find_map(ast::NameRef::cast)?;
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let qualifier_start_path =
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qualifier_start.syntax().ancestors().find_map(ast::Path::cast)?;
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if let Some(qualifier_start_resolution) =
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source_analyzer.resolve_path(db, &qualifier_start_path)
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{
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let qualifier_resolution = if &qualifier_start_path == path_under_caret {
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qualifier_start_resolution
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} else {
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source_analyzer.resolve_path(db, &qualifier)?
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};
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if let PathResolution::Def(ModuleDef::Adt(function_callee)) = qualifier_resolution {
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Some(ImportCandidate::TraitFunction(function_callee, segment))
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} else {
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None
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}
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} else {
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Some(ImportCandidate::QualifierStart(qualifier_start))
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}
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} else {
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if source_analyzer.resolve_path(db, path_under_caret).is_none() {
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Some(ImportCandidate::UnqualifiedName(
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segment.syntax().descendants().find_map(ast::NameRef::cast)?,
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))
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} else {
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None
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}
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}
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}
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fn get_search_query(&self) -> String {
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match self {
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ImportCandidate::UnqualifiedName(name_ref)
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| ImportCandidate::QualifierStart(name_ref) => name_ref.syntax().to_string(),
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ImportCandidate::TraitFunction(_, trait_function) => {
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trait_function.syntax().to_string()
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}
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}
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}
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fn search_for_imports(
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&self,
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db: &RootDatabase,
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module_with_name_to_import: Module,
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) -> BTreeSet<ModPath> {
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ImportsLocator::new(db)
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.find_imports(&self.get_search_query())
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.into_iter()
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.filter_map(|module_def| match self {
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ImportCandidate::TraitFunction(function_callee, _) => {
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if let ModuleDef::Function(function) = module_def {
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dbg!(function);
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todo!()
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} else {
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None
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}
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}
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_ => module_with_name_to_import.find_use_path(db, module_def),
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})
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.filter(|use_path| !use_path.segments.is_empty())
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.take(20)
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.collect::<BTreeSet<_>>()
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}
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}
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#[cfg(test)]
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#[cfg(test)]
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mod tests {
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mod tests {
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use crate::helpers::{check_assist, check_assist_not_applicable, check_assist_target};
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use crate::helpers::{check_assist, check_assist_not_applicable, check_assist_target};
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@ -381,6 +452,7 @@ mod tests {
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}
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}
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#[test]
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#[test]
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#[ignore] // TODO kb
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fn trait_method() {
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fn trait_method() {
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check_assist(
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check_assist(
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auto_import,
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auto_import,
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