Remove predicate functions from Expression

CHANGELOG.md

@@ -41,7 +41,6 @@
     - Renamed `OperatorApplication` to `Operation`
     - Removed the `InfixDirection` field
     - `OperatorApplication String InfixDirection (Node Expression) (Node Expression)` -> `Operation String (Node Expression) (Node Expression)`
-  - Renamed `isOperatorApplication` to `isOperation`
   - Renamed `RecordExpr` to `Record`
   - Renamed `CaseExpression` to `Case`
   - Renamed `LetExpression` to `Let`
@@ -51,6 +50,7 @@
   - Removed `Elm.Syntax.Expression.Cases` type alias (it was `type alias Cases = List Case`)
   - `Elm.Syntax.Expression.CaseBlock`'s `cases : List Case` field is split into `firstCase : Case` and `restOfCases : List Case` (takes a non-empty list of cases)
   - Removed `Operator` (it was not possible to get)
+  - Renamed predicate functions `isLambda`, `isLet`, `isIfElse`, `isCase`, `isOperatorApplication`
 
 - Changed `Elm.Syntax.Pattern.Pattern`:
   - Removed `FloatPattern` (it was not possible to get)

src/Elm/Syntax/Expression.elm

@@ -1,6 +1,6 @@
 module Elm.Syntax.Expression exposing
     ( Expression(..), Lambda, LetBlock, LetDeclaration(..), RecordSetter, CaseBlock, Case, Function, FunctionImplementation
-    , functionRange, isLambda, isLet, isIfElse, isCase, isOperation
+    , functionRange
     )
 
 {-| This syntax represents all that you can express in Elm.
@@ -14,7 +14,7 @@ Although it is a easy and simple language, you can express a lot! See the `Expre
 
 ## Functions
 
-@docs functionRange, isLambda, isLet, isIfElse, isCase, isOperation
+@docs functionRange
 
 -}
 
@@ -166,63 +166,3 @@ type alias CaseBlock =
 -}
 type alias Case =
     ( Node Pattern, Node Expression )
-
-
-{-| Check whether an expression is a lambda-expression
--}
-isLambda : Expression -> Bool
-isLambda e =
-    case e of
-        LambdaExpression _ ->
-            True
-
-        _ ->
-            False
-
-
-{-| Check whether an expression is a let-expression
--}
-isLet : Expression -> Bool
-isLet e =
-    case e of
-        Let _ ->
-            True
-
-        _ ->
-            False
-
-
-{-| Check whether an expression is an if-else-expression
--}
-isIfElse : Expression -> Bool
-isIfElse e =
-    case e of
-        If _ _ _ ->
-            True
-
-        _ ->
-            False
-
-
-{-| Check whether an expression is a case-expression
--}
-isCase : Expression -> Bool
-isCase e =
-    case e of
-        Case _ ->
-            True
-
-        _ ->
-            False
-
-
-{-| Check whether an expression is an operator application expression
--}
-isOperation : Expression -> Bool
-isOperation e =
-    case e of
-        Operation _ _ _ ->
-            True
-
-        _ ->
-            False