1 files changed, 3 insertions, 228 deletions

diff --git a/crates/ra_assists/src/ast_editor.rs b/crates/ra_assists/src/ast_editor.rs
index cf32ea52d..55c0aa59f 100644
--- a/crates/ra_assists/src/ast_editor.rs
+++ b/crates/ra_assists/src/ast_editor.rs
@@ -1,18 +1,18 @@
 use std::{iter, ops::RangeInclusive};
 
 use arrayvec::ArrayVec;
-use itertools::Itertools;
 
-use hir::Name;
 use ra_fmt::leading_indent;
 use ra_syntax::{
     algo::{insert_children, replace_children},
-    ast, AstNode, Direction, InsertPosition, SourceFile, SyntaxElement,
+    ast, AstNode, Direction, InsertPosition, SyntaxElement,
     SyntaxKind::*,
     T,
 };
 use ra_text_edit::TextEditBuilder;
 
+use crate::ast_builder::tokens;
+
 pub struct AstEditor<N: AstNode> {
     original_ast: N,
     ast: N,
@@ -240,228 +240,3 @@ impl AstEditor<ast::FnDef> {
         self.ast = self.replace_children(replace_range, to_insert.into_iter())
     }
 }
-
-pub struct AstBuilder<N: AstNode> {
-    _phantom: std::marker::PhantomData<N>,
-}
-
-impl AstBuilder<ast::RecordField> {
-    pub fn from_name(name: &Name) -> ast::RecordField {
-        ast_node_from_file_text(&format!("fn f() {{ S {{ {}: (), }} }}", name))
-    }
-
-    fn from_text(text: &str) -> ast::RecordField {
-        ast_node_from_file_text(&format!("fn f() {{ S {{ {}, }} }}", text))
-    }
-
-    pub fn from_pieces(name: &ast::NameRef, expr: Option<&ast::Expr>) -> ast::RecordField {
-        match expr {
-            Some(expr) => Self::from_text(&format!("{}: {}", name.syntax(), expr.syntax())),
-            None => Self::from_text(&name.syntax().to_string()),
-        }
-    }
-}
-
-impl AstBuilder<ast::Block> {
-    fn from_text(text: &str) -> ast::Block {
-        ast_node_from_file_text(&format!("fn f() {}", text))
-    }
-
-    pub fn single_expr(e: &ast::Expr) -> ast::Block {
-        Self::from_text(&format!("{{ {} }}", e.syntax()))
-    }
-}
-
-impl AstBuilder<ast::Expr> {
-    fn from_text(text: &str) -> ast::Expr {
-        ast_node_from_file_text(&format!("const C: () = {};", text))
-    }
-
-    pub fn unit() -> ast::Expr {
-        Self::from_text("()")
-    }
-
-    pub fn unimplemented() -> ast::Expr {
-        Self::from_text("unimplemented!()")
-    }
-}
-
-impl AstBuilder<ast::NameRef> {
-    pub fn new(text: &str) -> ast::NameRef {
-        ast_node_from_file_text(&format!("fn f() {{ {}; }}", text))
-    }
-}
-
-impl AstBuilder<ast::Path> {
-    fn from_text(text: &str) -> ast::Path {
-        ast_node_from_file_text(text)
-    }
-
-    pub fn from_name(name: ast::Name) -> ast::Path {
-        let name = name.syntax().to_string();
-        Self::from_text(name.as_str())
-    }
-
-    pub fn from_pieces(enum_name: ast::Name, var_name: ast::Name) -> ast::Path {
-        Self::from_text(&format!("{}::{}", enum_name.syntax(), var_name.syntax()))
-    }
-}
-
-impl AstBuilder<ast::BindPat> {
-    fn from_text(text: &str) -> ast::BindPat {
-        ast_node_from_file_text(&format!("fn f({}: ())", text))
-    }
-
-    pub fn from_name(name: &ast::Name) -> ast::BindPat {
-        Self::from_text(name.text())
-    }
-}
-
-impl AstBuilder<ast::PlaceholderPat> {
-    fn from_text(text: &str) -> ast::PlaceholderPat {
-        ast_node_from_file_text(&format!("fn f({}: ())", text))
-    }
-
-    pub fn placeholder() -> ast::PlaceholderPat {
-        Self::from_text("_")
-    }
-}
-
-impl AstBuilder<ast::TupleStructPat> {
-    fn from_text(text: &str) -> ast::TupleStructPat {
-        ast_node_from_file_text(&format!("fn f({}: ())", text))
-    }
-
-    pub fn from_pieces(
-        path: &ast::Path,
-        pats: impl Iterator<Item = ast::Pat>,
-    ) -> ast::TupleStructPat {
-        let pats_str = pats.map(|p| p.syntax().to_string()).collect::<Vec<_>>().join(", ");
-        Self::from_text(&format!("{}({})", path.syntax(), pats_str))
-    }
-}
-
-impl AstBuilder<ast::RecordPat> {
-    fn from_text(text: &str) -> ast::RecordPat {
-        ast_node_from_file_text(&format!("fn f({}: ())", text))
-    }
-
-    pub fn from_pieces(path: &ast::Path, pats: impl Iterator<Item = ast::Pat>) -> ast::RecordPat {
-        let pats_str = pats.map(|p| p.syntax().to_string()).collect::<Vec<_>>().join(", ");
-        Self::from_text(&format!("{}{{ {} }}", path.syntax(), pats_str))
-    }
-}
-
-impl AstBuilder<ast::PathPat> {
-    fn from_text(text: &str) -> ast::PathPat {
-        ast_node_from_file_text(&format!("fn f({}: ())", text))
-    }
-
-    pub fn from_path(path: &ast::Path) -> ast::PathPat {
-        let path_str = path.syntax().text().to_string();
-        Self::from_text(path_str.as_str())
-    }
-}
-
-impl AstBuilder<ast::MatchArm> {
-    fn from_text(text: &str) -> ast::MatchArm {
-        ast_node_from_file_text(&format!("fn f() {{ match () {{{}}} }}", text))
-    }
-
-    pub fn from_pieces(pats: impl Iterator<Item = ast::Pat>, expr: &ast::Expr) -> ast::MatchArm {
-        let pats_str = pats.map(|p| p.syntax().to_string()).join(" | ");
-        Self::from_text(&format!("{} => {}", pats_str, expr.syntax()))
-    }
-}
-
-impl AstBuilder<ast::MatchArmList> {
-    fn from_text(text: &str) -> ast::MatchArmList {
-        ast_node_from_file_text(&format!("fn f() {{ match () {{{}}} }}", text))
-    }
-
-    pub fn from_arms(arms: impl Iterator<Item = ast::MatchArm>) -> ast::MatchArmList {
-        let arms_str = arms.map(|arm| format!("\n    {}", arm.syntax())).join(",");
-        Self::from_text(&format!("{},\n", arms_str))
-    }
-}
-
-impl AstBuilder<ast::WherePred> {
-    fn from_text(text: &str) -> ast::WherePred {
-        ast_node_from_file_text(&format!("fn f() where {} {{ }}", text))
-    }
-
-    pub fn from_pieces(
-        path: ast::Path,
-        bounds: impl Iterator<Item = ast::TypeBound>,
-    ) -> ast::WherePred {
-        let bounds = bounds.map(|b| b.syntax().to_string()).collect::<Vec<_>>().join(" + ");
-        Self::from_text(&format!("{}: {}", path.syntax(), bounds))
-    }
-}
-
-impl AstBuilder<ast::WhereClause> {
-    fn from_text(text: &str) -> ast::WhereClause {
-        ast_node_from_file_text(&format!("fn f() where {} {{ }}", text))
-    }
-
-    pub fn from_predicates(preds: impl Iterator<Item = ast::WherePred>) -> ast::WhereClause {
-        let preds = preds.map(|p| p.syntax().to_string()).collect::<Vec<_>>().join(", ");
-        Self::from_text(preds.as_str())
-    }
-}
-
-fn ast_node_from_file_text<N: AstNode>(text: &str) -> N {
-    let parse = SourceFile::parse(text);
-    let res = parse.tree().syntax().descendants().find_map(N::cast).unwrap();
-    res
-}
-
-mod tokens {
-    use once_cell::sync::Lazy;
-    use ra_syntax::{AstNode, Parse, SourceFile, SyntaxKind::*, SyntaxToken, T};
-
-    static SOURCE_FILE: Lazy<Parse<SourceFile>> = Lazy::new(|| SourceFile::parse(",\n; ;"));
-
-    pub(crate) fn comma() -> SyntaxToken {
-        SOURCE_FILE
-            .tree()
-            .syntax()
-            .descendants_with_tokens()
-            .filter_map(|it| it.into_token())
-            .find(|it| it.kind() == T![,])
-            .unwrap()
-    }
-
-    pub(crate) fn single_space() -> SyntaxToken {
-        SOURCE_FILE
-            .tree()
-            .syntax()
-            .descendants_with_tokens()
-            .filter_map(|it| it.into_token())
-            .find(|it| it.kind() == WHITESPACE && it.text().as_str() == " ")
-            .unwrap()
-    }
-
-    #[allow(unused)]
-    pub(crate) fn single_newline() -> SyntaxToken {
-        SOURCE_FILE
-            .tree()
-            .syntax()
-            .descendants_with_tokens()
-            .filter_map(|it| it.into_token())
-            .find(|it| it.kind() == WHITESPACE && it.text().as_str() == "\n")
-            .unwrap()
-    }
-
-    pub(crate) struct WsBuilder(SourceFile);
-
-    impl WsBuilder {
-        pub(crate) fn new(text: &str) -> WsBuilder {
-            WsBuilder(SourceFile::parse(text).ok().unwrap())
-        }
-        pub(crate) fn ws(&self) -> SyntaxToken {
-            self.0.syntax().first_child_or_token().unwrap().into_token().unwrap()
-        }
-    }
-
-}