From b082cd679ad1ae7646d03261bcccda435443365c Mon Sep 17 00:00:00 2001
From: Aleksey Kladov <aleksey.kladov@gmail.com>
Date: Sat, 17 Aug 2019 17:51:01 +0300
Subject: normalize ordering ops

---
 crates/ra_hir/src/expr.rs  | 30 ++++++++++++++++++++----------
 crates/ra_hir/src/ty/op.rs | 32 ++++++++++++++++----------------
 2 files changed, 36 insertions(+), 26 deletions(-)

(limited to 'crates/ra_hir/src')

diff --git a/crates/ra_hir/src/expr.rs b/crates/ra_hir/src/expr.rs
index ea3fa4417..5430a0c9f 100644
--- a/crates/ra_hir/src/expr.rs
+++ b/crates/ra_hir/src/expr.rs
@@ -273,12 +273,14 @@ pub enum LogicOp {
 
 #[derive(Copy, Clone, Debug, PartialEq, Eq, Hash)]
 pub enum CmpOp {
-    Equal,
-    NotEqual,
+    Eq { negated: bool },
+    Ord { ordering: Ordering, strict: bool },
+}
+
+#[derive(Copy, Clone, Debug, PartialEq, Eq, Hash)]
+pub enum Ordering {
     Less,
-    LessOrEqual,
     Greater,
-    GreaterOrEqual,
 }
 
 #[derive(Copy, Clone, Debug, PartialEq, Eq, Hash)]
@@ -1080,12 +1082,20 @@ impl From<ast::BinOp> for BinaryOp {
         match ast_op {
             ast::BinOp::BooleanOr => BinaryOp::LogicOp(LogicOp::Or),
             ast::BinOp::BooleanAnd => BinaryOp::LogicOp(LogicOp::And),
-            ast::BinOp::EqualityTest => BinaryOp::CmpOp(CmpOp::Equal),
-            ast::BinOp::NegatedEqualityTest => BinaryOp::CmpOp(CmpOp::NotEqual),
-            ast::BinOp::LesserEqualTest => BinaryOp::CmpOp(CmpOp::LessOrEqual),
-            ast::BinOp::GreaterEqualTest => BinaryOp::CmpOp(CmpOp::GreaterOrEqual),
-            ast::BinOp::LesserTest => BinaryOp::CmpOp(CmpOp::Less),
-            ast::BinOp::GreaterTest => BinaryOp::CmpOp(CmpOp::Greater),
+            ast::BinOp::EqualityTest => BinaryOp::CmpOp(CmpOp::Eq { negated: false }),
+            ast::BinOp::NegatedEqualityTest => BinaryOp::CmpOp(CmpOp::Eq { negated: true }),
+            ast::BinOp::LesserEqualTest => {
+                BinaryOp::CmpOp(CmpOp::Ord { ordering: Ordering::Less, strict: false })
+            }
+            ast::BinOp::GreaterEqualTest => {
+                BinaryOp::CmpOp(CmpOp::Ord { ordering: Ordering::Greater, strict: false })
+            }
+            ast::BinOp::LesserTest => {
+                BinaryOp::CmpOp(CmpOp::Ord { ordering: Ordering::Less, strict: true })
+            }
+            ast::BinOp::GreaterTest => {
+                BinaryOp::CmpOp(CmpOp::Ord { ordering: Ordering::Greater, strict: true })
+            }
             ast::BinOp::Addition => BinaryOp::ArithOp(ArithOp::Add),
             ast::BinOp::Multiplication => BinaryOp::ArithOp(ArithOp::Mul),
             ast::BinOp::Subtraction => BinaryOp::ArithOp(ArithOp::Sub),
diff --git a/crates/ra_hir/src/ty/op.rs b/crates/ra_hir/src/ty/op.rs
index 1d089f1b0..1b30a5b9b 100644
--- a/crates/ra_hir/src/ty/op.rs
+++ b/crates/ra_hir/src/ty/op.rs
@@ -22,29 +22,29 @@ pub(super) fn binary_op_return_ty(op: BinaryOp, rhs_ty: Ty) -> Ty {
 pub(super) fn binary_op_rhs_expectation(op: BinaryOp, lhs_ty: Ty) -> Ty {
     match op {
         BinaryOp::LogicOp(..) => Ty::simple(TypeCtor::Bool),
-        BinaryOp::Assignment { op: None }
-        | BinaryOp::CmpOp(CmpOp::Equal)
-        | BinaryOp::CmpOp(CmpOp::NotEqual) => match lhs_ty {
-            Ty::Apply(ApplicationTy { ctor, .. }) => match ctor {
-                TypeCtor::Int(..)
-                | TypeCtor::Float(..)
-                | TypeCtor::Str
-                | TypeCtor::Char
-                | TypeCtor::Bool => lhs_ty,
-                _ => Ty::Unknown,
-            },
-            Ty::Infer(InferTy::IntVar(..)) | Ty::Infer(InferTy::FloatVar(..)) => lhs_ty,
-            _ => Ty::Unknown,
-        },
-        BinaryOp::CmpOp(_) | BinaryOp::Assignment { op: Some(_) } | BinaryOp::ArithOp(_) => {
+        BinaryOp::Assignment { op: None } | BinaryOp::CmpOp(CmpOp::Eq { negated: _ }) => {
             match lhs_ty {
                 Ty::Apply(ApplicationTy { ctor, .. }) => match ctor {
-                    TypeCtor::Int(..) | TypeCtor::Float(..) => lhs_ty,
+                    TypeCtor::Int(..)
+                    | TypeCtor::Float(..)
+                    | TypeCtor::Str
+                    | TypeCtor::Char
+                    | TypeCtor::Bool => lhs_ty,
                     _ => Ty::Unknown,
                 },
                 Ty::Infer(InferTy::IntVar(..)) | Ty::Infer(InferTy::FloatVar(..)) => lhs_ty,
                 _ => Ty::Unknown,
             }
         }
+        BinaryOp::CmpOp(CmpOp::Ord { .. })
+        | BinaryOp::Assignment { op: Some(_) }
+        | BinaryOp::ArithOp(_) => match lhs_ty {
+            Ty::Apply(ApplicationTy { ctor, .. }) => match ctor {
+                TypeCtor::Int(..) | TypeCtor::Float(..) => lhs_ty,
+                _ => Ty::Unknown,
+            },
+            Ty::Infer(InferTy::IntVar(..)) | Ty::Infer(InferTy::FloatVar(..)) => lhs_ty,
+            _ => Ty::Unknown,
+        },
     }
 }
-- 
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