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-rw-r--r--crates/ra_analysis/src/imp.rs14
-rw-r--r--crates/ra_analysis/src/lib.rs3
2 files changed, 16 insertions, 1 deletions
diff --git a/crates/ra_analysis/src/imp.rs b/crates/ra_analysis/src/imp.rs
index b01382808..4e0631679 100644
--- a/crates/ra_analysis/src/imp.rs
+++ b/crates/ra_analysis/src/imp.rs
@@ -5,7 +5,8 @@ use std::{
5 5
6use ra_editor::{self, find_node_at_offset, FileSymbol, LineIndex, LocalEdit}; 6use ra_editor::{self, find_node_at_offset, FileSymbol, LineIndex, LocalEdit};
7use ra_syntax::{ 7use ra_syntax::{
8 ast::{self, ArgListOwner, Expr, NameOwner}, 8 ast::{self, ArgListOwner, Expr, NameOwner, FnDef},
9 algo::find_covering_node,
9 AstNode, SourceFileNode, 10 AstNode, SourceFileNode,
10 SyntaxKind::*, 11 SyntaxKind::*,
11 SyntaxNodeRef, TextRange, TextUnit, 12 SyntaxNodeRef, TextRange, TextUnit,
@@ -510,6 +511,17 @@ impl AnalysisImpl {
510 Ok(None) 511 Ok(None)
511 } 512 }
512 513
514 pub fn type_of(&self, file_id: FileId, range: TextRange) -> Cancelable<Option<String>> {
515 let file = self.db.source_file(file_id);
516 let syntax = file.syntax();
517 let node = find_covering_node(syntax, range);
518 let parent_fn = node.ancestors().filter_map(FnDef::cast).next();
519 let parent_fn = if let Some(p) = parent_fn { p } else { return Ok(None) };
520 let function = ctry!(source_binder::function_from_source(&*self.db, file_id, parent_fn)?);
521 let infer = function.infer(&*self.db);
522 Ok(infer.type_of_node(node).map(|t| t.to_string()))
523 }
524
513 fn index_resolve(&self, name_ref: ast::NameRef) -> Cancelable<Vec<(FileId, FileSymbol)>> { 525 fn index_resolve(&self, name_ref: ast::NameRef) -> Cancelable<Vec<(FileId, FileSymbol)>> {
514 let name = name_ref.text(); 526 let name = name_ref.text();
515 let mut query = Query::new(name.to_string()); 527 let mut query = Query::new(name.to_string());
diff --git a/crates/ra_analysis/src/lib.rs b/crates/ra_analysis/src/lib.rs
index 85df9c089..830898140 100644
--- a/crates/ra_analysis/src/lib.rs
+++ b/crates/ra_analysis/src/lib.rs
@@ -366,6 +366,9 @@ impl Analysis {
366 ) -> Cancelable<Option<(FnSignatureInfo, Option<usize>)>> { 366 ) -> Cancelable<Option<(FnSignatureInfo, Option<usize>)>> {
367 self.imp.resolve_callable(position) 367 self.imp.resolve_callable(position)
368 } 368 }
369 pub fn type_of(&self, file_id: FileId, range: TextRange) -> Cancelable<Option<String>> {
370 self.imp.type_of(file_id, range)
371 }
369} 372}
370 373
371pub struct LibraryData { 374pub struct LibraryData {