more completion components

4 files changed, 104 insertions, 95 deletions

diff --git a/crates/ra_analysis/src/completion.rs b/crates/ra_analysis/src/completion.rs
index 39066d51f..883b3e851 100644
--- a/crates/ra_analysis/src/completion.rs
+++ b/crates/ra_analysis/src/completion.rs
@@ -2,7 +2,8 @@ mod completion_item;
 mod reference_completion;
 
 mod complete_fn_param;
-mod complete_keywords;
+mod complete_keyword;
+mod complete_snippet;
 
 use ra_editor::find_node_at_offset;
 use ra_text_edit::AtomTextEdit;
@@ -49,7 +50,9 @@ pub(crate) fn completions(
 
     let ctx = ctry!(SyntaxContext::new(&original_file, position.offset));
     complete_fn_param::complete_fn_param(&mut acc, &ctx);
-    complete_keywords::complete_expr_keyword(&mut acc, &ctx);
+    complete_keyword::complete_expr_keyword(&mut acc, &ctx);
+    complete_snippet::complete_expr_snippet(&mut acc, &ctx);
+    complete_snippet::complete_item_snippet(&mut acc, &ctx);
 
     Ok(Some(acc))
 }
@@ -61,10 +64,12 @@ pub(super) struct SyntaxContext<'a> {
     leaf: SyntaxNodeRef<'a>,
     enclosing_fn: Option<ast::FnDef<'a>>,
     is_param: bool,
-    /// a single-indent path, like `foo`.
+    /// A single-indent path, like `foo`.
     is_trivial_path: bool,
     after_if: bool,
     is_stmt: bool,
+    /// Something is typed at the "top" level, in module or impl/trait.
+    is_new_item: bool,
 }
 
 impl SyntaxContext<'_> {
@@ -77,6 +82,7 @@ impl SyntaxContext<'_> {
             is_trivial_path: false,
             after_if: false,
             is_stmt: false,
+            is_new_item: false,
         };
         ctx.fill(original_file, offset);
         Some(ctx)
@@ -112,17 +118,22 @@ impl SyntaxContext<'_> {
         }
     }
     fn classify_name_ref(&mut self, file: &SourceFileNode, name_ref: ast::NameRef) {
-        // let name_range = name_ref.syntax().range();
-        // let top_node = name_ref
-        //     .syntax()
-        //     .ancestors()
-        //     .take_while(|it| it.range() == name_range)
-        //     .last()
-        //     .unwrap();
-        // match top_node.parent().map(|it| it.kind()) {
-        //     Some(SOURCE_FILE) | Some(ITEM_LIST) => return Some(NameRefKind::BareIdentInMod),
-        //     _ => (),
-        // }
+        let name_range = name_ref.syntax().range();
+        let top_node = name_ref
+            .syntax()
+            .ancestors()
+            .take_while(|it| it.range() == name_range)
+            .last()
+            .unwrap();
+
+        match top_node.parent().map(|it| it.kind()) {
+            Some(SOURCE_FILE) | Some(ITEM_LIST) => {
+                self.is_new_item = true;
+                return;
+            }
+            _ => (),
+        }
+
         let parent = match name_ref.syntax().parent() {
             Some(it) => it,
             None => return,
diff --git a/crates/ra_analysis/src/completion/complete_keywords.rs b/crates/ra_analysis/src/completion/complete_keyword.rs
index d0a6ec19e..d0a6ec19e 100644
--- a/crates/ra_analysis/src/completion/complete_keywords.rs
+++ b/crates/ra_analysis/src/completion/complete_keyword.rs
diff --git a/crates/ra_analysis/src/completion/complete_snippet.rs b/crates/ra_analysis/src/completion/complete_snippet.rs
new file mode 100644
index 000000000..5d6cc5dc9
--- /dev/null
+++ b/crates/ra_analysis/src/completion/complete_snippet.rs
@@ -0,0 +1,78 @@
+use crate::{
+    completion::{CompletionItem, Completions, CompletionKind::*, SyntaxContext},
+};
+
+pub(super) fn complete_expr_snippet(acc: &mut Completions, ctx: &SyntaxContext) {
+    if !(ctx.is_trivial_path && ctx.enclosing_fn.is_some()) {
+        return;
+    }
+    CompletionItem::new("pd")
+        .snippet("eprintln!(\"$0 = {:?}\", $0);")
+        .kind(Snippet)
+        .add_to(acc);
+    CompletionItem::new("ppd")
+        .snippet("eprintln!(\"$0 = {:#?}\", $0);")
+        .kind(Snippet)
+        .add_to(acc);
+}
+
+pub(super) fn complete_item_snippet(acc: &mut Completions, ctx: &SyntaxContext) {
+    if !ctx.is_new_item {
+        return;
+    }
+    CompletionItem::new("Test function")
+        .lookup_by("tfn")
+        .snippet(
+            "\
+#[test]
+fn ${1:feature}() {
+    $0
+}",
+        )
+        .kind(Snippet)
+        .add_to(acc);
+    CompletionItem::new("pub(crate)")
+        .snippet("pub(crate) $0")
+        .kind(Snippet)
+        .add_to(acc);
+}
+
+#[cfg(test)]
+mod tests {
+    use crate::completion::{CompletionKind, check_completion};
+    fn check_snippet_completion(code: &str, expected_completions: &str) {
+        check_completion(code, expected_completions, CompletionKind::Snippet);
+    }
+
+    #[test]
+    fn completes_snippets_in_expressions() {
+        check_snippet_completion(
+            r"fn foo(x: i32) { <|> }",
+            r##"
+            pd "eprintln!(\"$0 = {:?}\", $0);"
+            ppd "eprintln!(\"$0 = {:#?}\", $0);"
+            "##,
+        );
+    }
+
+    #[test]
+    fn completes_snippets_in_items() {
+        // check_snippet_completion(r"
+        //     <|>
+        //     ",
+        //     r##"[CompletionItem { label: "Test function", lookup: None, snippet: Some("#[test]\nfn test_${1:feature}() {\n$0\n}"##,
+        // );
+        check_snippet_completion(
+            r"
+            #[cfg(test)]
+            mod tests {
+                <|>
+            }
+            ",
+            r##"
+            tfn "Test function" "#[test]\nfn ${1:feature}() {\n    $0\n}"
+            pub(crate) "pub(crate) $0"
+            "##,
+        );
+    }
+}
diff --git a/crates/ra_analysis/src/completion/reference_completion.rs b/crates/ra_analysis/src/completion/reference_completion.rs
index 15ff4c5dd..46d381927 100644
--- a/crates/ra_analysis/src/completion/reference_completion.rs
+++ b/crates/ra_analysis/src/completion/reference_completion.rs
@@ -32,8 +32,6 @@ pub(super) fn completions(
             if let Some(fn_def) = enclosing_fn {
                 let scopes = FnScopes::new(fn_def);
                 complete_fn(name_ref, &scopes, acc);
-                // complete_expr_keywords(&file, fn_def, name_ref, acc);
-                complete_expr_snippets(acc);
             }
 
             let module_scope = module.scope(db)?;
@@ -56,19 +54,7 @@ pub(super) fn completions(
                 });
         }
         NameRefKind::Path(path) => complete_path(acc, db, module, path)?,
-        NameRefKind::BareIdentInMod => {
-            let name_range = name_ref.syntax().range();
-            let top_node = name_ref
-                .syntax()
-                .ancestors()
-                .take_while(|it| it.range() == name_range)
-                .last()
-                .unwrap();
-            match top_node.parent().map(|it| it.kind()) {
-                Some(SOURCE_FILE) | Some(ITEM_LIST) => complete_mod_item_snippets(acc),
-                _ => (),
-            }
-        }
+        NameRefKind::BareIdentInMod => (),
     }
     Ok(())
 }
@@ -162,35 +148,6 @@ fn complete_path(
     Ok(())
 }
 
-fn complete_mod_item_snippets(acc: &mut Completions) {
-    CompletionItem::new("Test function")
-        .lookup_by("tfn")
-        .snippet(
-            "\
-#[test]
-fn ${1:feature}() {
-    $0
-}",
-        )
-        .kind(Snippet)
-        .add_to(acc);
-    CompletionItem::new("pub(crate)")
-        .snippet("pub(crate) $0")
-        .kind(Snippet)
-        .add_to(acc);
-}
-
-fn complete_expr_snippets(acc: &mut Completions) {
-    CompletionItem::new("pd")
-        .snippet("eprintln!(\"$0 = {:?}\", $0);")
-        .kind(Snippet)
-        .add_to(acc);
-    CompletionItem::new("ppd")
-        .snippet("eprintln!(\"$0 = {:#?}\", $0);")
-        .kind(Snippet)
-        .add_to(acc);
-}
-
 #[cfg(test)]
 mod tests {
     use crate::completion::{CompletionKind, check_completion};
@@ -199,10 +156,6 @@ mod tests {
         check_completion(code, expected_completions, CompletionKind::Reference);
     }
 
-    fn check_snippet_completion(code: &str, expected_completions: &str) {
-        check_completion(code, expected_completions, CompletionKind::Snippet);
-    }
-
     #[test]
     fn test_completion_let_scope() {
         check_reference_completion(
@@ -378,37 +331,4 @@ mod tests {
             "Spam",
         );
     }
-
-    #[test]
-    fn completes_snippets_in_expressions() {
-        check_snippet_completion(
-            r"fn foo(x: i32) { <|> }",
-            r##"
-            pd "eprintln!(\"$0 = {:?}\", $0);"
-            ppd "eprintln!(\"$0 = {:#?}\", $0);"
-            "##,
-        );
-    }
-
-    #[test]
-    fn completes_snippets_in_items() {
-        // check_snippet_completion(r"
-        //     <|>
-        //     ",
-        //     r##"[CompletionItem { label: "Test function", lookup: None, snippet: Some("#[test]\nfn test_${1:feature}() {\n$0\n}"##,
-        // );
-        check_snippet_completion(
-            r"
-            #[cfg(test)]
-            mod tests {
-                <|>
-            }
-            ",
-            r##"
-            tfn "Test function" "#[test]\nfn ${1:feature}() {\n    $0\n}"
-            pub(crate) "pub(crate) $0"
-            "##,
-        );
-    }
-
 }