From ed4f13e5c796120cc0c051825116a29374b6745b Mon Sep 17 00:00:00 2001
From: Aleksey Kladov <aleksey.kladov@gmail.com>
Date: Tue, 8 Jan 2019 18:38:34 +0300
Subject: remove FnSignatureInfo from hir

---
 crates/ra_hir/src/function.rs | 127 +-----------------------------------------
 crates/ra_hir/src/lib.rs      |   2 -
 2 files changed, 3 insertions(+), 126 deletions(-)

(limited to 'crates/ra_hir')

diff --git a/crates/ra_hir/src/function.rs b/crates/ra_hir/src/function.rs
index 81b790c5f..2cfc4caa4 100644
--- a/crates/ra_hir/src/function.rs
+++ b/crates/ra_hir/src/function.rs
@@ -1,14 +1,11 @@
 mod scope;
 
-use std::{
-    cmp::{max, min},
-    sync::Arc,
-};
+use std::sync::Arc;
 
 use ra_db::Cancelable;
 use ra_syntax::{
-    TextRange, TextUnit, TreePtr,
-    ast::{self, AstNode, DocCommentsOwner, NameOwner},
+    TreePtr,
+    ast::{self, AstNode},
 };
 
 use crate::{DefId, DefKind, HirDatabase, ty::InferenceResult, Module, Crate, impl_block::ImplBlock, expr::{Body, BodySyntaxMapping}, type_ref::{TypeRef, Mutability}, Name};
@@ -57,11 +54,6 @@ impl Function {
         db.fn_signature(self.def_id)
     }
 
-    pub fn signature_info(&self, db: &impl HirDatabase) -> Option<FnSignatureInfo> {
-        let syntax = self.syntax(db);
-        FnSignatureInfo::new(&syntax)
-    }
-
     pub fn infer(&self, db: &impl HirDatabase) -> Cancelable<Arc<InferenceResult>> {
         db.infer(self.def_id)
     }
@@ -132,116 +124,3 @@ pub(crate) fn fn_signature(db: &impl HirDatabase, def_id: DefId) -> Arc<FnSignat
     let sig = FnSignature { args, ret_type };
     Arc::new(sig)
 }
-
-#[derive(Debug, Clone)]
-pub struct FnSignatureInfo {
-    pub name: String,
-    pub label: String,
-    pub ret_type: Option<String>,
-    pub params: Vec<String>,
-    pub doc: Option<String>,
-}
-
-impl FnSignatureInfo {
-    fn new(node: &ast::FnDef) -> Option<Self> {
-        let name = node.name()?.text().to_string();
-
-        let mut doc = None;
-
-        // Strip the body out for the label.
-        let mut label: String = if let Some(body) = node.body() {
-            let body_range = body.syntax().range();
-            let label: String = node
-                .syntax()
-                .children()
-                .filter(|child| !child.range().is_subrange(&body_range))
-                .map(|node| node.text().to_string())
-                .collect();
-            label
-        } else {
-            node.syntax().text().to_string()
-        };
-
-        if let Some((comment_range, docs)) = FnSignatureInfo::extract_doc_comments(node) {
-            let comment_range = comment_range
-                .checked_sub(node.syntax().range().start())
-                .unwrap();
-            let start = comment_range.start().to_usize();
-            let end = comment_range.end().to_usize();
-
-            // Remove the comment from the label
-            label.replace_range(start..end, "");
-
-            // Massage markdown
-            let mut processed_lines = Vec::new();
-            let mut in_code_block = false;
-            for line in docs.lines() {
-                if line.starts_with("```") {
-                    in_code_block = !in_code_block;
-                }
-
-                let line = if in_code_block && line.starts_with("```") && !line.contains("rust") {
-                    "```rust".into()
-                } else {
-                    line.to_string()
-                };
-
-                processed_lines.push(line);
-            }
-
-            if !processed_lines.is_empty() {
-                doc = Some(processed_lines.join("\n"));
-            }
-        }
-
-        let params = FnSignatureInfo::param_list(node);
-        let ret_type = node.ret_type().map(|r| r.syntax().text().to_string());
-
-        Some(FnSignatureInfo {
-            name,
-            ret_type,
-            params,
-            label: label.trim().to_owned(),
-            doc,
-        })
-    }
-
-    fn extract_doc_comments(node: &ast::FnDef) -> Option<(TextRange, String)> {
-        if node.doc_comments().count() == 0 {
-            return None;
-        }
-
-        let comment_text = node.doc_comment_text();
-
-        let (begin, end) = node
-            .doc_comments()
-            .map(|comment| comment.syntax().range())
-            .map(|range| (range.start().to_usize(), range.end().to_usize()))
-            .fold((std::usize::MAX, std::usize::MIN), |acc, range| {
-                (min(acc.0, range.0), max(acc.1, range.1))
-            });
-
-        let range = TextRange::from_to(TextUnit::from_usize(begin), TextUnit::from_usize(end));
-
-        Some((range, comment_text))
-    }
-
-    fn param_list(node: &ast::FnDef) -> Vec<String> {
-        let mut res = vec![];
-        if let Some(param_list) = node.param_list() {
-            if let Some(self_param) = param_list.self_param() {
-                res.push(self_param.syntax().text().to_string())
-            }
-
-            // Maybe use param.pat here? See if we can just extract the name?
-            //res.extend(param_list.params().map(|p| p.syntax().text().to_string()));
-            res.extend(
-                param_list
-                    .params()
-                    .filter_map(|p| p.pat())
-                    .map(|pat| pat.syntax().text().to_string()),
-            );
-        }
-        res
-    }
-}
diff --git a/crates/ra_hir/src/lib.rs b/crates/ra_hir/src/lib.rs
index f8ac28cf7..197d8c4fd 100644
--- a/crates/ra_hir/src/lib.rs
+++ b/crates/ra_hir/src/lib.rs
@@ -53,8 +53,6 @@ pub use self::{
     impl_block::{ImplBlock, ImplItem},
 };
 
-pub use self::function::FnSignatureInfo;
-
 pub use self::code_model_api::{
     Crate, CrateDependency,
     Module, ModuleSource, Problem,
-- 
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