From 90ea0073372292cc4e320cd0deaa656cd0063aa3 Mon Sep 17 00:00:00 2001
From: "Gregory.Shrago" <gregory.shrago@jetbrains.com>
Date: Wed, 14 Oct 2015 22:18:57 +0300
Subject: [PATCH] introduce constant()

---
 .../src/com/intellij/openapi/util/Conditions.java        | 4 ++++
 platform/util-rt/src/com/intellij/util/Functions.java    | 9 +++++++++
 2 files changed, 13 insertions(+)

diff --git a/platform/util-rt/src/com/intellij/openapi/util/Conditions.java b/platform/util-rt/src/com/intellij/openapi/util/Conditions.java
index 87b2913b0110..0cdda1ad6a7c 100644
--- a/platform/util-rt/src/com/intellij/openapi/util/Conditions.java
+++ b/platform/util-rt/src/com/intellij/openapi/util/Conditions.java
@@ -45,6 +45,10 @@ public class Conditions {
     return (Condition<T>)Condition.NOT_NULL;
   }
 
+  public static <T> Condition<T> constant(boolean value) {
+    return (Condition<T>)(value ? TRUE : FALSE);
+  }
+
   public static <T> Condition<T> instanceOf(final Class<?> clazz) {
     return new Condition<T>() {
       @Override
diff --git a/platform/util-rt/src/com/intellij/util/Functions.java b/platform/util-rt/src/com/intellij/util/Functions.java
index 81e53b6a2e8f..a16b7a1fa161 100644
--- a/platform/util-rt/src/com/intellij/util/Functions.java
+++ b/platform/util-rt/src/com/intellij/util/Functions.java
@@ -29,6 +29,15 @@ public class Functions {
     return (Function.Mono<A>)Function.ID;
   }
 
+  public static <A, B> Function<A, B> constant(final B b) {
+    return new Function<A, B>() {
+      @Override
+      public B fun(A a) {
+        return b;
+      }
+    };
+  }
+
   public static <A, B> Function<A, B> identity() {
     return Function.ID;
   }