fold syntax database into files database

crates/ra_ide_api/src/call_info.rs

@@ -1,4 +1,4 @@
-use ra_db::SyntaxDatabase;
+use ra_db::FilesDatabase;
 use ra_syntax::{
     AstNode, SyntaxNode, TextUnit, TextRange,
     SyntaxKind::FN_DEF,

crates/ra_ide_api/src/completion.rs

@@ -9,7 +9,7 @@ mod complete_path;
 mod complete_scope;
 mod complete_postfix;
 
-use ra_db::SyntaxDatabase;
+use ra_db::FilesDatabase;
 
 use crate::{
     db,

crates/ra_ide_api/src/db.rs

@@ -1,7 +1,7 @@
 use std::sync::Arc;
 
 use ra_db::{
-    BaseDatabase, FileId, Canceled,
+    CheckCanceled, FileId, Canceled,
     salsa::{self, Database},
 };
 
@@ -9,7 +9,6 @@ use crate::{symbol_index, LineIndex};
 
 #[salsa::database(
     ra_db::FilesDatabaseStorage,
-    ra_db::SyntaxDatabaseStorage,
     LineIndexDatabaseStorage,
     symbol_index::SymbolsDatabaseStorage,
     hir::db::HirDatabaseStorage
@@ -54,7 +53,7 @@ impl salsa::ParallelDatabase for RootDatabase {
     }
 }
 
-impl BaseDatabase for RootDatabase {}
+impl CheckCanceled for RootDatabase {}
 
 impl AsRef<hir::HirInterner> for RootDatabase {
     fn as_ref(&self) -> &hir::HirInterner {
@@ -63,7 +62,7 @@ impl AsRef<hir::HirInterner> for RootDatabase {
 }
 
 #[salsa::query_group(LineIndexDatabaseStorage)]
-pub(crate) trait LineIndexDatabase: ra_db::FilesDatabase + BaseDatabase {
+pub(crate) trait LineIndexDatabase: ra_db::FilesDatabase + CheckCanceled {
     fn line_index(&self, file_id: FileId) -> Arc<LineIndex>;
 }
 

crates/ra_ide_api/src/extend_selection.rs

@@ -1,4 +1,4 @@
-use ra_db::SyntaxDatabase;
+use ra_db::FilesDatabase;
 use ra_syntax::{
     SyntaxNode, AstNode, SourceFile,
     ast, algo::find_covering_node,

crates/ra_ide_api/src/goto_definition.rs

@@ -1,4 +1,4 @@
-use ra_db::{FileId, SyntaxDatabase};
+use ra_db::{FileId, FilesDatabase};
 use ra_syntax::{
     AstNode, ast,
     algo::find_node_at_offset,

crates/ra_ide_api/src/hover.rs

@@ -1,4 +1,4 @@
-use ra_db::{SyntaxDatabase};
+use ra_db::FilesDatabase;
 use ra_syntax::{
     AstNode, SyntaxNode, TreeArc, ast,
     algo::{find_covering_node, find_node_at_offset, find_leaf_at_offset, visit::{visitor, Visitor}},

crates/ra_ide_api/src/imp.rs

@@ -4,7 +4,7 @@ use hir::{
     self, Problem, source_binder
 };
 use ra_db::{
-    FilesDatabase, SourceRoot, SourceRootId, SyntaxDatabase,
+    FilesDatabase, SourceRoot, SourceRootId,
     salsa::{Database, SweepStrategy},
 };
 use ra_ide_api_light::{self, assists, LocalEdit, Severity};

crates/ra_ide_api/src/lib.rs

@@ -34,7 +34,7 @@ use std::{fmt, sync::Arc};
 use ra_syntax::{SourceFile, TreeArc, TextRange, TextUnit};
 use ra_text_edit::TextEdit;
 use ra_db::{
-    SyntaxDatabase, FilesDatabase, BaseDatabase,
+    FilesDatabase, CheckCanceled,
     salsa::{self, ParallelDatabase},
 };
 use rayon::prelude::*;

crates/ra_ide_api/src/rename.rs

@@ -17,7 +17,7 @@ use crate::{
     SourceChange,
     SourceFileEdit,
 };
-use ra_db::{FilesDatabase, SyntaxDatabase};
+use ra_db::FilesDatabase;
 use relative_path::RelativePath;
 
 pub(crate) fn rename(

crates/ra_ide_api/src/runnables.rs

@@ -3,7 +3,7 @@ use ra_syntax::{
     TextRange, SyntaxNode,
     ast::{self, AstNode, NameOwner, ModuleItemOwner},
 };
-use ra_db::SyntaxDatabase;
+use ra_db::FilesDatabase;
 
 use crate::{db::RootDatabase, FileId};
 

crates/ra_ide_api/src/syntax_highlighting.rs

@@ -1,5 +1,5 @@
 use ra_syntax::{ast, AstNode,};
-use ra_db::SyntaxDatabase;
+use ra_db::FilesDatabase;
 
 use crate::{
     FileId, HighlightedRange,