aws · eladb · Nov 7, 2018 · Nov 7, 2018 · Nov 7, 2018 · Nov 7, 2018
diff --git a/packages/jsii-calc-base/test/assembly.jsii b/packages/jsii-calc-base/test/assembly.jsii
@@ -73,7 +73,6 @@
           },
           "name": "typeName",
           "returns": {
-            "optional": true,
             "primitive": "any"
           }
         }
@@ -103,5 +102,5 @@
     }
   },
   "version": "0.7.8",
-  "fingerprint": "K1rAUs6WiQ5lF08T46B8v/5UL8T8Ot59e0Nc8rh2jiQ="
+  "fingerprint": "FbKHAP60R40tOOnvhCeDrZDrNlgzIypOfAdWPed+Jog="
 }
diff --git a/packages/jsii-calc/lib/compliance.ts b/packages/jsii-calc/lib/compliance.ts
@@ -939,3 +939,58 @@ export interface IInterfaceWithMethods {
 export interface IInterfaceThatShouldNotBeADataType extends IInterfaceWithMethods {
     readonly otherValue: string;
 }
+
+/**
+ * jsii#284: do not recognize "any" as an optional argument
+ */
+export class DoNotRecognizeAnyAsOptional {
+    public method(_requiredAny: any, _optionalAny?: any, _optionalString?: string) {
+
+    }
+}
+
+/**
+ * jsii#282, aws-cdk#157: null should be treated as "undefined"
+ */
+export class NullShouldBeTreatedAsUndefined {
+    public changeMeToUndefined? = "hello";
+
+    constructor(_param1: string, optional?: any) {
+        if (optional !== undefined) {
+            throw new Error('Expecting second constructor argument to be "undefined"');
+        }
+    }
+
+    public giveMeUndefined(value?: any) {
+        if (value !== undefined) {
+            throw new Error('I am disappointed. I expected undefined and got: ' + JSON.stringify(value));
+        }
+    }
+
+    public giveMeUndefinedInsideAnObject(input: NullShouldBeTreatedAsUndefinedData) {
+        if (input.thisShouldBeUndefined !== undefined) {
+            throw new Error('I am disappointed. I expected undefined in "thisShouldBeUndefined" and got: ' + JSON.stringify(input));
+        }
+
+        const array = input.arrayWithThreeElementsAndUndefinedAsSecondArgument;
+        if (array.length !== 3) {
+            throw new Error('Expecting "arrayWithThreeElementsAndUndefinedAsSecondArgument" to have three elements: ' + JSON.stringify(input));
+        }
+
+        if (array[1] !== undefined) {
+            throw new Error('Expected arrayWithThreeElementsAndUndefinedAsSecondArgument[1] to be undefined: ' + JSON.stringify(input))
+        }
+    }
+
+    public verifyPropertyIsUndefined() {
+        if (this.changeMeToUndefined !== undefined) {
+            throw new Error('Expecting property "changeMeToUndefined" to be undefined, and it is: ' + this.changeMeToUndefined);
+        }
+    }
+}
+
+export interface NullShouldBeTreatedAsUndefinedData {
+    thisShouldBeUndefined?: any;
+    arrayWithThreeElementsAndUndefinedAsSecondArgument: any[];
+}
+
diff --git a/packages/jsii-calc/test/assembly.jsii b/packages/jsii-calc/test/assembly.jsii
@@ -382,7 +382,6 @@
           "type": {
             "collection": {
               "elementtype": {
-                "optional": true,
                 "primitive": "any"
               },
               "kind": "array"
@@ -394,13 +393,18 @@
           "type": {
             "collection": {
               "elementtype": {
-                "optional": true,
                 "primitive": "any"
               },
               "kind": "map"
             }
           }
         },
+        {
+          "name": "anyProperty",
+          "type": {
+            "primitive": "any"
+          }
+        },
         {
           "name": "arrayProperty",
           "type": {
@@ -528,7 +532,6 @@
           "type": {
             "collection": {
               "elementtype": {
-                "optional": true,
                 "primitive": "any"
               },
               "kind": "array"
@@ -540,17 +543,15 @@
           "type": {
             "collection": {
               "elementtype": {
-                "optional": true,
                 "primitive": "any"
               },
               "kind": "map"
             }
           }
         },
         {
-          "name": "anyProperty",
+          "name": "unknownProperty",
           "type": {
-            "optional": true,
             "primitive": "any"
           }
         },
@@ -560,13 +561,6 @@
             "fqn": "jsii-calc.StringEnum",
             "optional": true
           }
-        },
-        {
-          "name": "unknownProperty",
-          "type": {
-            "optional": true,
-            "primitive": "any"
-          }
         }
       ]
     },
@@ -1301,6 +1295,45 @@
       ],
       "name": "DoNotOverridePrivates"
     },
+    "jsii-calc.DoNotRecognizeAnyAsOptional": {
+      "assembly": "jsii-calc",
+      "docs": {
+        "comment": "jsii#284: do not recognize \"any\" as an optional argument"
+      },
+      "fqn": "jsii-calc.DoNotRecognizeAnyAsOptional",
+      "initializer": {
+        "initializer": true
+      },
+      "kind": "class",
+      "methods": [
+        {
+          "name": "method",
+          "parameters": [
+            {
+              "name": "_requiredAny",
+              "type": {
+                "primitive": "any"
+              }
+            },
+            {
+              "name": "_optionalAny",
+              "type": {
+                "optional": true,
+                "primitive": "any"
+              }
+            },
+            {
+              "name": "_optionalString",
+              "type": {
+                "optional": true,
+                "primitive": "string"
+              }
+            }
+          ]
+        }
+      ],
+      "name": "DoNotRecognizeAnyAsOptional"
+    },
     "jsii-calc.DoubleTrouble": {
       "assembly": "jsii-calc",
       "fqn": "jsii-calc.DoubleTrouble",
@@ -2240,6 +2273,100 @@
         }
       ]
     },
+    "jsii-calc.NullShouldBeTreatedAsUndefined": {
+      "assembly": "jsii-calc",
+      "docs": {
+        "comment": "jsii#282, aws-cdk#157: null should be treated as \"undefined\""
+      },
+      "fqn": "jsii-calc.NullShouldBeTreatedAsUndefined",
+      "initializer": {
+        "initializer": true,
+        "parameters": [
+          {
+            "name": "_param1",
+            "type": {
+              "primitive": "string"
+            }
+          },
+          {
+            "name": "optional",
+            "type": {
+              "optional": true,
+              "primitive": "any"
+            }
+          }
+        ]
+      },
+      "kind": "class",
+      "methods": [
+        {
+          "name": "giveMeUndefined",
+          "parameters": [
+            {
+              "name": "value",
+              "type": {
+                "optional": true,
+                "primitive": "any"
+              }
+            }
+          ]
+        },
+        {
+          "name": "giveMeUndefinedInsideAnObject",
+          "parameters": [
+            {
+              "name": "input",
+              "type": {
+                "fqn": "jsii-calc.NullShouldBeTreatedAsUndefinedData"
+              }
+            }
+          ]
+        },
+        {
+          "name": "verifyPropertyIsUndefined"
+        }
+      ],
+      "name": "NullShouldBeTreatedAsUndefined",
+      "properties": [
+        {
+          "name": "changeMeToUndefined",
+          "type": {
+            "optional": true,
+            "primitive": "string"
+          }
+        }
+      ]
+    },
+    "jsii-calc.NullShouldBeTreatedAsUndefinedData": {
+      "assembly": "jsii-calc",
+      "datatype": true,
+      "fqn": "jsii-calc.NullShouldBeTreatedAsUndefinedData",
+      "kind": "interface",
+      "name": "NullShouldBeTreatedAsUndefinedData",
+      "properties": [
+        {
+          "abstract": true,
+          "name": "arrayWithThreeElementsAndUndefinedAsSecondArgument",
+          "type": {
+            "collection": {
+              "elementtype": {
+                "optional": true,
+                "primitive": "any"
+              },
+              "kind": "array"
+            }
+          }
+        },
+        {
+          "abstract": true,
+          "name": "thisShouldBeUndefined",
+          "type": {
+            "optional": true,
+            "primitive": "any"
+          }
+        }
+      ]
+    },
     "jsii-calc.NumberGenerator": {
       "assembly": "jsii-calc",
       "docs": {
@@ -3062,7 +3189,6 @@
         {
           "name": "value",
           "returns": {
-            "optional": true,
             "primitive": "any"
           }
         }
@@ -3412,5 +3538,5 @@
     }
   },
   "version": "0.7.8",
-  "fingerprint": "Xn7Rk17rqR3AaMx3+ssxT0GR1sCWwz0OGC+C8QuLI3A="
+  "fingerprint": "2BaszImarh4WChl9DFUcygfTpEfXU17fHQT2wgEptfM="
 }
diff --git a/...ges/jsii-dotnet-runtime-test/test/Amazon.JSII.Runtime.IntegrationTests/ComplianceTests.cs b/...ges/jsii-dotnet-runtime-test/test/Amazon.JSII.Runtime.IntegrationTests/ComplianceTests.cs
@@ -827,6 +827,27 @@ public void TestReturnInterfaceFromOverride()
             Assert.Equal(4 * n, obj.Test(arg));
         }
 
+        [Fact(DisplayName = Prefix + nameof(NullShouldBeTreatedAsUndefined))]
+        public void NullShouldBeTreatedAsUndefined()
+        {
+            // ctor
+            var obj = new NullShouldBeTreatedAsUndefined("param1", null);
+
+            // method argument
+            obj.GiveMeUndefined(null);
+
+            // inside object
+            obj.GiveMeUndefinedInsideAnObject(new NullShouldBeTreatedAsUndefinedData
+            {
+                ThisShouldBeUndefined = null,
+                ArrayWithThreeElementsAndUndefinedAsSecondArgument = new[] { "hello", null, "world" }
+            });
+
+            // property
+            obj.ChangeMeToUndefined = null;
+            obj.VerifyPropertyIsUndefined();
+        }
+
         class NumberReturner : DeputyBase, IIReturnsNumber
         {
             public NumberReturner(double number)

diff --git a/packages/jsii-java-runtime-test/project/.gitignore b/packages/jsii-java-runtime-test/project/.gitignore
@@ -1,3 +1,5 @@
+bin/
+
 !index.js
 .idea
 pom.xml

diff --git a/...-java-runtime-test/project/src/test/java/software/amazon/jsii/testing/ComplianceTest.java b/...-java-runtime-test/project/src/test/java/software/amazon/jsii/testing/ComplianceTest.java
@@ -25,6 +25,8 @@
 import software.amazon.jsii.tests.calculator.Multiply;
 import software.amazon.jsii.tests.calculator.Negate;
 import software.amazon.jsii.tests.calculator.NodeStandardLibrary;
+import software.amazon.jsii.tests.calculator.NullShouldBeTreatedAsUndefined;
+import software.amazon.jsii.tests.calculator.NullShouldBeTreatedAsUndefinedData;
 import software.amazon.jsii.tests.calculator.NumberGenerator;
 import software.amazon.jsii.tests.calculator.Polymorphism;
 import software.amazon.jsii.tests.calculator.Power;
@@ -927,6 +929,18 @@ public void classWithPrivateConstructorAndAutomaticProperties() {
         assertEquals("Hello", obj.getReadOnlyString());
     }
 
+    @Test
+    public void nullShouldBeTreatedAsUndefined() {
+        NullShouldBeTreatedAsUndefined obj = new NullShouldBeTreatedAsUndefined("hello", null);
+        obj.giveMeUndefined(null);
+        obj.giveMeUndefinedInsideAnObject(NullShouldBeTreatedAsUndefinedData.builder()
+                .withThisShouldBeUndefined(null)
+                .withArrayWithThreeElementsAndUndefinedAsSecondArgument(Arrays.asList("hello", null, "boom"))
+                .build());
+        obj.setChangeMeToUndefined(null);
+        obj.verifyPropertyIsUndefined();
+    }
+
     static class MulTen extends Multiply {
         public MulTen(final int value) {
             super(new Number(value), new Number(10));

diff --git a/packages/jsii-java-runtime/project/.gitignore b/packages/jsii-java-runtime/project/.gitignore
@@ -1,3 +1,5 @@
+bin/
+
 !index.js
 .idea
 pom.xml

diff --git a/packages/jsii-kernel/lib/kernel.ts b/packages/jsii-kernel/lib/kernel.ts
@@ -877,9 +877,10 @@ export class Kernel {
             return undefined;
         }
 
-        // null
+        // null is treated as "undefined" because most languages do not have this distinction
+        // see awslabs/aws-cdk#157 and awslabs/jsii#282
         if (v === null) {
-            return null;
+            return undefined;
         }
 
         // pointer
-Original file line number
+Diff line change
@@ -1,3 +1,5 @@
+    bin/
     !index.js
     .idea
     pom.xml
@@ Expand Down @@