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-rw-r--r--crates/assists/src/handlers/invert_if.rs18
-rw-r--r--crates/assists/src/utils.rs21
-rw-r--r--crates/syntax/src/ast/make.rs8
3 files changed, 45 insertions, 2 deletions
diff --git a/crates/assists/src/handlers/invert_if.rs b/crates/assists/src/handlers/invert_if.rs
index f0e047538..294256297 100644
--- a/crates/assists/src/handlers/invert_if.rs
+++ b/crates/assists/src/handlers/invert_if.rs
@@ -106,4 +106,22 @@ mod tests {
106 "fn f() { i<|>f let Some(_) = Some(1) { 1 } else { 0 } }", 106 "fn f() { i<|>f let Some(_) = Some(1) { 1 } else { 0 } }",
107 ) 107 )
108 } 108 }
109
110 #[test]
111 fn invert_if_option_case() {
112 check_assist(
113 invert_if,
114 "fn f() { if<|> doc_style.is_some() { Class::DocComment } else { Class::Comment } }",
115 "fn f() { if doc_style.is_none() { Class::Comment } else { Class::DocComment } }",
116 )
117 }
118
119 #[test]
120 fn invert_if_result_case() {
121 check_assist(
122 invert_if,
123 "fn f() { i<|>f doc_style.is_err() { Class::Err } else { Class::Ok } }",
124 "fn f() { if doc_style.is_ok() { Class::Ok } else { Class::Err } }",
125 )
126 }
109} 127}
diff --git a/crates/assists/src/utils.rs b/crates/assists/src/utils.rs
index d071d6502..e15c982e7 100644
--- a/crates/assists/src/utils.rs
+++ b/crates/assists/src/utils.rs
@@ -11,7 +11,7 @@ use syntax::{
11 ast::{self, make, NameOwner}, 11 ast::{self, make, NameOwner},
12 AstNode, Direction, 12 AstNode, Direction,
13 SyntaxKind::*, 13 SyntaxKind::*,
14 SyntaxNode, TextSize, T, 14 SyntaxNode, SyntaxText, TextSize, T,
15}; 15};
16 16
17use crate::assist_config::SnippetCap; 17use crate::assist_config::SnippetCap;
@@ -179,6 +179,25 @@ fn invert_special_case(expr: &ast::Expr) -> Option<ast::Expr> {
179 ast::BinOp::EqualityTest => bin.replace_op(T![!=]).map(|it| it.into()), 179 ast::BinOp::EqualityTest => bin.replace_op(T![!=]).map(|it| it.into()),
180 _ => None, 180 _ => None,
181 }, 181 },
182 ast::Expr::MethodCallExpr(mce) => {
183 const IS_SOME_TEXT: &str = "is_some";
184 const IS_NONE_TEXT: &str = "is_none";
185 const IS_OK_TEXT: &str = "is_ok";
186 const IS_ERR_TEXT: &str = "is_err";
187
188 let name = mce.name_ref()?;
189 let name_text = name.text();
190
191 let caller = || -> Option<SyntaxText> { Some(mce.receiver()?.syntax().text()) };
192
193 match name_text {
194 x if x == IS_SOME_TEXT => make::expr_method_call(IS_NONE_TEXT, caller),
195 x if x == IS_NONE_TEXT => make::expr_method_call(IS_SOME_TEXT, caller),
196 x if x == IS_OK_TEXT => make::expr_method_call(IS_ERR_TEXT, caller),
197 x if x == IS_ERR_TEXT => make::expr_method_call(IS_OK_TEXT, caller),
198 _ => None,
199 }
200 }
182 ast::Expr::PrefixExpr(pe) if pe.op_kind()? == ast::PrefixOp::Not => pe.expr(), 201 ast::Expr::PrefixExpr(pe) if pe.op_kind()? == ast::PrefixOp::Not => pe.expr(),
183 // FIXME: 202 // FIXME:
184 // ast::Expr::Literal(true | false ) 203 // ast::Expr::Literal(true | false )
diff --git a/crates/syntax/src/ast/make.rs b/crates/syntax/src/ast/make.rs
index d20c085aa..7958721e2 100644
--- a/crates/syntax/src/ast/make.rs
+++ b/crates/syntax/src/ast/make.rs
@@ -7,7 +7,7 @@
7use itertools::Itertools; 7use itertools::Itertools;
8use stdx::format_to; 8use stdx::format_to;
9 9
10use crate::{ast, AstNode, SourceFile, SyntaxKind, SyntaxNode, SyntaxToken}; 10use crate::{ast, AstNode, SourceFile, SyntaxKind, SyntaxNode, SyntaxText, SyntaxToken};
11 11
12pub fn name(text: &str) -> ast::Name { 12pub fn name(text: &str) -> ast::Name {
13 ast_from_text(&format!("mod {};", text)) 13 ast_from_text(&format!("mod {};", text))
@@ -137,6 +137,12 @@ pub fn expr_prefix(op: SyntaxKind, expr: ast::Expr) -> ast::Expr {
137pub fn expr_call(f: ast::Expr, arg_list: ast::ArgList) -> ast::Expr { 137pub fn expr_call(f: ast::Expr, arg_list: ast::ArgList) -> ast::Expr {
138 expr_from_text(&format!("{}{}", f, arg_list)) 138 expr_from_text(&format!("{}{}", f, arg_list))
139} 139}
140pub fn expr_method_call<F>(text: &str, caller: F) -> Option<ast::Expr>
141where
142 F: FnOnce() -> Option<SyntaxText>,
143{
144 try_expr_from_text(&format!("{}.{}()", caller()?, text))
145}
140fn expr_from_text(text: &str) -> ast::Expr { 146fn expr_from_text(text: &str) -> ast::Expr {
141 ast_from_text(&format!("const C: () = {};", text)) 147 ast_from_text(&format!("const C: () = {};", text))
142} 148}