FIR: Introduce CONST_VAL_NOT_TOP_LEVEL_OR_OBJECT diagnostic

compiler/fir/analysis-tests/testData/resolve/constVal/constValNotTopLevelOrObject.fir.txt

@@ -0,0 +1,100 @@
+FILE: constValNotTopLevelOrObject.kt
+    public final const val a: R|kotlin/Int| = Int(1)
+        public get(): R|kotlin/Int|
+    public final object B : R|kotlin/Any| {
+        private constructor(): R|B| {
+            super<R|kotlin/Any|>()
+        }
+
+        public final const val b: R|kotlin/Int| = Int(2)
+            public get(): R|kotlin/Int|
+
+    }
+    public final class C : R|kotlin/Any| {
+        public constructor(): R|C| {
+            super<R|kotlin/Any|>()
+        }
+
+        public final const val c: R|kotlin/Int| = Int(3)
+            public get(): R|kotlin/Int|
+
+    }
+    public final class D : R|kotlin/Any| {
+        public constructor(): R|D| {
+            super<R|kotlin/Any|>()
+        }
+
+        public final object E : R|kotlin/Any| {
+            private constructor(): R|D.E| {
+                super<R|kotlin/Any|>()
+            }
+
+            public final const val e: R|kotlin/Int| = Int(4)
+                public get(): R|kotlin/Int|
+
+        }
+
+        public final companion object K : R|kotlin/Any| {
+            private constructor(): R|D.K| {
+                super<R|kotlin/Any|>()
+            }
+
+            public final const val k: R|kotlin/Int| = Int(4)
+                public get(): R|kotlin/Int|
+
+        }
+
+        public final val M: R|kotlin/Any| = object : R|kotlin/Any| {
+            private constructor(): R|<anonymous>| {
+                super<R|kotlin/Any|>()
+            }
+
+            public final const val m: R|kotlin/Int| = Int(3)
+                public get(): R|kotlin/Int|
+
+        }
+
+            public get(): R|kotlin/Any|
+
+        public open class O : R|kotlin/Any| {
+            public constructor(): R|D.O| {
+                super<R|kotlin/Any|>()
+            }
+
+            public open val y: R|kotlin/Int| = Int(8)
+                public get(): R|kotlin/Int|
+
+        }
+
+        public final val t: R|D.O| = object : R|D.O| {
+            private constructor(): R|<anonymous>| {
+                super<R|D.O|>()
+            }
+
+            public final const val x: R|kotlin/Int| = Int(15)
+                public get(): R|kotlin/Int|
+
+        }
+
+            public get(): R|D.O|
+
+    }
+    public final object F : R|kotlin/Any| {
+        private constructor(): R|F| {
+            super<R|kotlin/Any|>()
+        }
+
+        public final class G : R|kotlin/Any| {
+            public constructor(): R|F.G| {
+                super<R|kotlin/Any|>()
+            }
+
+            public final const val e: R|kotlin/Int| = Int(4)
+                public get(): R|kotlin/Int|
+
+        }
+
+    }
+    public final fun foo(): R|kotlin/Unit| {
+        lval a: R|kotlin/String| = String(2)
+    }

compiler/fir/analysis-tests/testData/resolve/constVal/constValNotTopLevelOrObject.kt

@@ -0,0 +1,42 @@
+const val a = 1
+
+object B {
+    const val b = 2
+}
+
+class C {
+    <!CONST_VAL_NOT_TOP_LEVEL_OR_OBJECT!>const<!> val c = 3
+}
+
+class D {
+    object E {
+        const val e = 4
+    }
+
+    companion object K {
+        const val k = 4
+    }
+
+    val M = object {
+        <!CONST_VAL_NOT_TOP_LEVEL_OR_OBJECT!>const<!> val m = 3
+    }
+
+    open class O {
+        open val y: Int = 8
+    }
+
+    val t: O = object : O() {
+        <!CONST_VAL_NOT_TOP_LEVEL_OR_OBJECT!>const<!> val x = 15
+    }
+
+}
+
+object F {
+    class G {
+        <!CONST_VAL_NOT_TOP_LEVEL_OR_OBJECT!>const<!> val e = 4
+    }
+}
+
+fun foo() {
+    <!CONST_VAL_NOT_TOP_LEVEL_OR_OBJECT!>const<!> val a = "2"
+}