Supported checking for changing signature in submethods.

#KT-2776 in progress

compiler/frontend.java/src/org/jetbrains/jet/lang/resolve/java/kotlinSignature/AlternativeMethodSignatureData.java

@@ -30,6 +30,7 @@ import org.jetbrains.jet.lang.resolve.java.JavaDescriptorResolver;
 import org.jetbrains.jet.lang.resolve.java.wrapper.PsiMethodWrapper;
 import org.jetbrains.jet.lang.resolve.name.Name;
 import org.jetbrains.jet.lang.types.JetType;
+import org.jetbrains.jet.lang.types.TypeUtils;
 import org.jetbrains.jet.lang.types.lang.KotlinBuiltIns;
 
 import java.util.ArrayList;
@@ -43,7 +44,6 @@ import java.util.Map;
  */
 public class AlternativeMethodSignatureData extends ElementAlternativeSignatureData {
     private final JetNamedFunction altFunDeclaration;
-    private final PsiMethodWrapper method;
 
     private JavaDescriptorResolver.ValueParameterDescriptors altValueParameters;
     private JetType altReturnType;
@@ -56,18 +56,17 @@ public class AlternativeMethodSignatureData extends ElementAlternativeSignatureD
             @NotNull PsiMethodWrapper method,
             @NotNull JavaDescriptorResolver.ValueParameterDescriptors valueParameterDescriptors,
             @Nullable JetType originalReturnType,
-            @NotNull List<TypeParameterDescriptor> methodTypeParameters
+            @NotNull List<TypeParameterDescriptor> methodTypeParameters,
+            boolean hasSuperMethods
     ) {
         String signature = method.getSignatureAnnotation().signature();
         if (signature.isEmpty()) {
             setAnnotated(false);
             altFunDeclaration = null;
-            this.method = null;
             return;
         }
 
         setAnnotated(true);
-        this.method = method;
         Project project = method.getPsiMethod().getProject();
         altFunDeclaration = JetPsiFactory.createFunction(project, signature);
 
@@ -89,6 +88,10 @@ public class AlternativeMethodSignatureData extends ElementAlternativeSignatureD
             computeTypeParameters(methodTypeParameters);
             computeValueParameters(valueParameterDescriptors);
 
+            if (hasSuperMethods) {
+                checkSameParameterTypes(valueParameterDescriptors, methodTypeParameters);
+            }
+
             if (originalReturnType != null) {
                 altReturnType = computeReturnType(originalReturnType, altFunDeclaration.getReturnTypeRef(), originalToAltTypeParameters);
             }
@@ -98,6 +101,32 @@ public class AlternativeMethodSignatureData extends ElementAlternativeSignatureD
         }
     }
 
+    private void checkSameParameterTypes(
+            @NotNull JavaDescriptorResolver.ValueParameterDescriptors valueParameterDescriptors,
+            @NotNull List<TypeParameterDescriptor> methodTypeParameters
+    ) {
+        for (ValueParameterDescriptor parameter : valueParameterDescriptors.getDescriptors()) {
+            int index = parameter.getIndex();
+            ValueParameterDescriptor altParameter = altValueParameters.getDescriptors().get(index);
+            if (!TypeUtils.equalTypes(parameter.getType(), altParameter.getType())) {
+                throw new AlternativeSignatureMismatchException(
+                        "Parameter type changed for method which overrides another: " + altParameter.getType()
+                        + ", was: " + parameter.getType());
+            }
+        }
+
+        // don't check receiver
+
+        for (TypeParameterDescriptor parameter : methodTypeParameters) {
+            int index = parameter.getIndex();
+            if (!TypeUtils.equalTypes(altTypeParameters.get(index).getUpperBoundsAsType(), parameter.getUpperBoundsAsType())) {
+                throw new AlternativeSignatureMismatchException(
+                        "Type parameter's upper bound changed for method which overrides another: "
+                        + altTypeParameters.get(index).getUpperBoundsAsType() + ", was: " + parameter.getUpperBoundsAsType());
+            }
+        }
+    }
+
     @NotNull
     public JavaDescriptorResolver.ValueParameterDescriptors getValueParameters() {
         checkForErrors();

compiler/frontend.java/src/org/jetbrains/jet/lang/resolve/java/resolver/JavaConstructorResolver.java

@@ -192,7 +192,7 @@ public final class JavaConstructorResolver {
 
         AlternativeMethodSignatureData alternativeMethodSignatureData =
                 new AlternativeMethodSignatureData(constructor, valueParameterDescriptors, null,
-                                                   Collections.<TypeParameterDescriptor>emptyList());
+                                                   Collections.<TypeParameterDescriptor>emptyList(), false);
         if (alternativeMethodSignatureData.isAnnotated() && !alternativeMethodSignatureData.hasErrors()) {
             valueParameterDescriptors = alternativeMethodSignatureData.getValueParameters();
         }

compiler/frontend.java/src/org/jetbrains/jet/lang/resolve/java/resolver/JavaFunctionResolver.java

@@ -156,7 +156,8 @@ public final class JavaFunctionResolver {
 
         // TODO consider better place for this check
         AlternativeMethodSignatureData alternativeMethodSignatureData =
-                new AlternativeMethodSignatureData(method, valueParameterDescriptors, returnType, methodTypeParameters);
+                new AlternativeMethodSignatureData(method, valueParameterDescriptors, returnType, methodTypeParameters,
+                                                   !superFunctions.isEmpty());
         if (alternativeMethodSignatureData.isAnnotated() && !alternativeMethodSignatureData.hasErrors()) {
             valueParameterDescriptors = alternativeMethodSignatureData.getValueParameters();
             returnType = alternativeMethodSignatureData.getReturnType();

compiler/testData/loadJava/kotlinSignature/propagation/parameter/ChangeProjectionKind1.java

@@ -0,0 +1,20 @@
+package test;
+
+import org.jetbrains.annotations.NotNull;
+import jet.runtime.typeinfo.KotlinSignature;
+import org.jetbrains.jet.jvm.compiler.annotation.ExpectLoadError;
+import java.util.*;
+
+public interface ChangeProjectionKind1 {
+
+    public interface Super {
+        @KotlinSignature("fun foo(p: MutableList<in String>)")
+        void foo(List<String> p);
+    }
+
+    public interface Sub extends Super {
+        @ExpectLoadError("Variance mismatch, actual: in, in alternative signature: ")
+        @KotlinSignature("fun foo(p: MutableList<String>)")
+        void foo(List<String> p);
+    }
+}

compiler/testData/loadJava/kotlinSignature/propagation/parameter/ChangeProjectionKind1.kt

@@ -0,0 +1,12 @@
+package test
+
+public trait ChangeProjectionKind1: Object {
+
+    public trait Super: Object {
+        public fun foo(p0: MutableList<in String>)
+    }
+
+    public trait Sub: Super {
+        override fun foo(p0: MutableList<in String>)
+    }
+}

compiler/testData/loadJava/kotlinSignature/propagation/parameter/ChangeProjectionKind1.txt

@@ -0,0 +1,10 @@
+namespace test
+
+public abstract trait test.ChangeProjectionKind1 : java.lang.Object {
+    public abstract trait test.ChangeProjectionKind1.Sub : test.ChangeProjectionKind1.Super {
+        public abstract override /*1*/ fun foo(/*0*/ p0: jet.MutableList<in jet.String>): jet.Tuple0
+    }
+    public abstract trait test.ChangeProjectionKind1.Super : java.lang.Object {
+        public abstract fun foo(/*0*/ p0: jet.MutableList<in jet.String>): jet.Tuple0
+    }
+}

compiler/testData/loadJava/kotlinSignature/propagation/parameter/ChangeProjectionKind2.java

@@ -0,0 +1,20 @@
+package test;
+
+import org.jetbrains.annotations.NotNull;
+import jet.runtime.typeinfo.KotlinSignature;
+import org.jetbrains.jet.jvm.compiler.annotation.ExpectLoadError;
+import java.util.*;
+
+public interface ChangeProjectionKind2 {
+
+    public interface Super {
+        @KotlinSignature("fun foo(p: MutableList<String>)")
+        void foo(List<String> p);
+    }
+
+    public interface Sub extends Super {
+        @ExpectLoadError("Parameter type changed for method which overrides another: MutableList<in String>, was: MutableList<String>")
+        @KotlinSignature("fun foo(p: MutableList<in String>)")
+        void foo(List<String> p);
+    }
+}

compiler/testData/loadJava/kotlinSignature/propagation/parameter/ChangeProjectionKind2.kt

@@ -0,0 +1,12 @@
+package test
+
+public trait ChangeProjectionKind2: Object {
+
+    public trait Super: Object {
+        public fun foo(p0: MutableList<String>)
+    }
+
+    public trait Sub: Super {
+        override fun foo(p0: MutableList<String>)
+    }
+}

compiler/testData/loadJava/kotlinSignature/propagation/parameter/ChangeProjectionKind2.txt

@@ -0,0 +1,10 @@
+namespace test
+
+public abstract trait test.ChangeProjectionKind2 : java.lang.Object {
+    public abstract trait test.ChangeProjectionKind2.Sub : test.ChangeProjectionKind2.Super {
+        public abstract override /*1*/ fun foo(/*0*/ p0: jet.MutableList<jet.String>): jet.Tuple0
+    }
+    public abstract trait test.ChangeProjectionKind2.Super : java.lang.Object {
+        public abstract fun foo(/*0*/ p0: jet.MutableList<jet.String>): jet.Tuple0
+    }
+}

compiler/testData/loadJava/kotlinSignature/propagation/parameter/MutableToReadOnly.java

@@ -0,0 +1,20 @@
+package test;
+
+import org.jetbrains.annotations.NotNull;
+import jet.runtime.typeinfo.KotlinSignature;
+import org.jetbrains.jet.jvm.compiler.annotation.ExpectLoadError;
+import java.util.*;
+
+public interface MutableToReadOnly {
+
+    public interface Super {
+        @KotlinSignature("fun foo(p: MutableList<String>)")
+        void foo(List<String> p);
+    }
+
+    public interface Sub extends Super {
+        @ExpectLoadError("Parameter type changed for method which overrides another: List<String>, was: MutableList<String>")
+        @KotlinSignature("fun foo(p: List<String>)")
+        void foo(List<String> p);
+    }
+}

compiler/testData/loadJava/kotlinSignature/propagation/parameter/MutableToReadOnly.kt

@@ -0,0 +1,12 @@
+package test
+
+public trait MutableToReadOnly: Object {
+
+    public trait Super: Object {
+        public fun foo(p0: MutableList<String>)
+    }
+
+    public trait Sub: Super {
+        override fun foo(p0: MutableList<String>)
+    }
+}

compiler/testData/loadJava/kotlinSignature/propagation/parameter/MutableToReadOnly.txt

@@ -0,0 +1,10 @@
+namespace test
+
+public abstract trait test.MutableToReadOnly : java.lang.Object {
+    public abstract trait test.MutableToReadOnly.Sub : test.MutableToReadOnly.Super {
+        public abstract override /*1*/ fun foo(/*0*/ p0: jet.MutableList<jet.String>): jet.Tuple0
+    }
+    public abstract trait test.MutableToReadOnly.Super : java.lang.Object {
+        public abstract fun foo(/*0*/ p0: jet.MutableList<jet.String>): jet.Tuple0
+    }
+}

compiler/testData/loadJava/kotlinSignature/propagation/parameter/NullableToNotNullKotlinSignature.java

@@ -0,0 +1,19 @@
+package test;
+
+import org.jetbrains.annotations.NotNull;
+import jet.runtime.typeinfo.KotlinSignature;
+import org.jetbrains.jet.jvm.compiler.annotation.ExpectLoadError;
+
+public interface NullableToNotNullKotlinSignature {
+
+    public interface Super {
+        @KotlinSignature("fun foo(p: String?)")
+        void foo(String p);
+    }
+
+    public interface Sub extends Super {
+        @ExpectLoadError("Parameter type changed for method which overrides another: String, was: String?")
+        @KotlinSignature("fun foo(p: String)")
+        void foo(String p);
+    }
+}

compiler/testData/loadJava/kotlinSignature/propagation/parameter/NullableToNotNullKotlinSignature.kt

@@ -0,0 +1,12 @@
+package test
+
+public trait NullableToNotNullKotlinSignature: Object {
+
+    public trait Super: Object {
+        public fun foo(p0: String?)
+    }
+
+    public trait Sub: Super {
+        override fun foo(p0: String?)
+    }
+}

compiler/testData/loadJava/kotlinSignature/propagation/parameter/NullableToNotNullKotlinSignature.txt

@@ -0,0 +1,10 @@
+namespace test
+
+public abstract trait test.NullableToNotNullKotlinSignature : java.lang.Object {
+    public abstract trait test.NullableToNotNullKotlinSignature.Sub : test.NullableToNotNullKotlinSignature.Super {
+        public abstract override /*1*/ fun foo(/*0*/ p0: jet.String?): jet.Tuple0
+    }
+    public abstract trait test.NullableToNotNullKotlinSignature.Super : java.lang.Object {
+        public abstract fun foo(/*0*/ p0: jet.String?): jet.Tuple0
+    }
+}

compiler/testData/loadJava/kotlinSignature/propagation/parameter/ReadOnlyToMutable.java

@@ -0,0 +1,20 @@
+package test;
+
+import org.jetbrains.annotations.NotNull;
+import jet.runtime.typeinfo.KotlinSignature;
+import org.jetbrains.jet.jvm.compiler.annotation.ExpectLoadError;
+import java.util.*;
+
+public interface ReadOnlyToMutable {
+
+    public interface Super {
+        @KotlinSignature("fun foo(p: List<String>)")
+        void foo(List<String> p);
+    }
+
+    public interface Sub extends Super {
+        @ExpectLoadError("Parameter type changed for method which overrides another: MutableList<String>, was: List<String>")
+        @KotlinSignature("fun foo(p: MutableList<String>)")
+        void foo(List<String> p);
+    }
+}

compiler/testData/loadJava/kotlinSignature/propagation/parameter/ReadOnlyToMutable.kt

@@ -0,0 +1,12 @@
+package test
+
+public trait ReadOnlyToMutable: Object {
+
+    public trait Super: Object {
+        public fun foo(p0: List<String>)
+    }
+
+    public trait Sub: Super {
+        override fun foo(p0: List<String>)
+    }
+}

compiler/testData/loadJava/kotlinSignature/propagation/parameter/ReadOnlyToMutable.txt

@@ -0,0 +1,10 @@
+namespace test
+
+public abstract trait test.ReadOnlyToMutable : java.lang.Object {
+    public abstract trait test.ReadOnlyToMutable.Sub : test.ReadOnlyToMutable.Super {
+        public abstract override /*1*/ fun foo(/*0*/ p0: jet.List<jet.String>): jet.Tuple0
+    }
+    public abstract trait test.ReadOnlyToMutable.Super : java.lang.Object {
+        public abstract fun foo(/*0*/ p0: jet.List<jet.String>): jet.Tuple0
+    }
+}

compiler/tests/org/jetbrains/jet/jvm/compiler/LoadJavaTestGenerated.java

@@ -451,6 +451,16 @@ public class LoadJavaTestGenerated extends AbstractLoadJavaTest {
                     JetTestUtils.assertAllTestsPresentByMetadata(this.getClass(), "org.jetbrains.jet.generators.tests.GenerateTests", new File("compiler/testData/loadJava/kotlinSignature/propagation/parameter"), "java", true);
                 }
                 
+                @TestMetadata("ChangeProjectionKind1.java")
+                public void testChangeProjectionKind1() throws Exception {
+                    doTest("compiler/testData/loadJava/kotlinSignature/propagation/parameter/ChangeProjectionKind1.java");
+                }
+                
+                @TestMetadata("ChangeProjectionKind2.java")
+                public void testChangeProjectionKind2() throws Exception {
+                    doTest("compiler/testData/loadJava/kotlinSignature/propagation/parameter/ChangeProjectionKind2.java");
+                }
+                
                 @TestMetadata("InheritMutability.java")
                 public void testInheritMutability() throws Exception {
                     doTest("compiler/testData/loadJava/kotlinSignature/propagation/parameter/InheritMutability.java");
@@ -491,6 +501,11 @@ public class LoadJavaTestGenerated extends AbstractLoadJavaTest {
                     doTest("compiler/testData/loadJava/kotlinSignature/propagation/parameter/InheritVarargNotNull.java");
                 }
                 
+                @TestMetadata("MutableToReadOnly.java")
+                public void testMutableToReadOnly() throws Exception {
+                    doTest("compiler/testData/loadJava/kotlinSignature/propagation/parameter/MutableToReadOnly.java");
+                }
+                
                 @TestMetadata("NotNullToNullable.java")
                 public void testNotNullToNullable() throws Exception {
                     doTest("compiler/testData/loadJava/kotlinSignature/propagation/parameter/NotNullToNullable.java");
@@ -501,6 +516,16 @@ public class LoadJavaTestGenerated extends AbstractLoadJavaTest {
                     doTest("compiler/testData/loadJava/kotlinSignature/propagation/parameter/NullableToNotNull.java");
                 }
                 
+                @TestMetadata("NullableToNotNullKotlinSignature.java")
+                public void testNullableToNotNullKotlinSignature() throws Exception {
+                    doTest("compiler/testData/loadJava/kotlinSignature/propagation/parameter/NullableToNotNullKotlinSignature.java");
+                }
+                
+                @TestMetadata("ReadOnlyToMutable.java")
+                public void testReadOnlyToMutable() throws Exception {
+                    doTest("compiler/testData/loadJava/kotlinSignature/propagation/parameter/ReadOnlyToMutable.java");
+                }
+                
             }
             
             @TestMetadata("compiler/testData/loadJava/kotlinSignature/propagation/return")

compiler/tests/org/jetbrains/jet/lang/resolve/lazy/LazyResolveNamespaceComparingTestGenerated.java

@@ -1341,6 +1341,16 @@ public class LazyResolveNamespaceComparingTestGenerated extends AbstractLazyReso
                         JetTestUtils.assertAllTestsPresentByMetadata(this.getClass(), "org.jetbrains.jet.generators.tests.GenerateTests", new File("compiler/testData/loadJava/kotlinSignature/propagation/parameter"), "kt", true);
                     }
                     
+                    @TestMetadata("ChangeProjectionKind1.kt")
+                    public void testChangeProjectionKind1() throws Exception {
+                        doTestSinglePackage("compiler/testData/loadJava/kotlinSignature/propagation/parameter/ChangeProjectionKind1.kt");
+                    }
+                    
+                    @TestMetadata("ChangeProjectionKind2.kt")
+                    public void testChangeProjectionKind2() throws Exception {
+                        doTestSinglePackage("compiler/testData/loadJava/kotlinSignature/propagation/parameter/ChangeProjectionKind2.kt");
+                    }
+                    
                     @TestMetadata("InheritMutability.kt")
                     public void testInheritMutability() throws Exception {
                         doTestSinglePackage("compiler/testData/loadJava/kotlinSignature/propagation/parameter/InheritMutability.kt");
@@ -1381,6 +1391,11 @@ public class LazyResolveNamespaceComparingTestGenerated extends AbstractLazyReso
                         doTestSinglePackage("compiler/testData/loadJava/kotlinSignature/propagation/parameter/InheritVarargNotNull.kt");
                     }
                     
+                    @TestMetadata("MutableToReadOnly.kt")
+                    public void testMutableToReadOnly() throws Exception {
+                        doTestSinglePackage("compiler/testData/loadJava/kotlinSignature/propagation/parameter/MutableToReadOnly.kt");
+                    }
+                    
                     @TestMetadata("NotNullToNullable.kt")
                     public void testNotNullToNullable() throws Exception {
                         doTestSinglePackage("compiler/testData/loadJava/kotlinSignature/propagation/parameter/NotNullToNullable.kt");
@@ -1391,6 +1406,16 @@ public class LazyResolveNamespaceComparingTestGenerated extends AbstractLazyReso
                         doTestSinglePackage("compiler/testData/loadJava/kotlinSignature/propagation/parameter/NullableToNotNull.kt");
                     }
                     
+                    @TestMetadata("NullableToNotNullKotlinSignature.kt")
+                    public void testNullableToNotNullKotlinSignature() throws Exception {
+                        doTestSinglePackage("compiler/testData/loadJava/kotlinSignature/propagation/parameter/NullableToNotNullKotlinSignature.kt");
+                    }
+                    
+                    @TestMetadata("ReadOnlyToMutable.kt")
+                    public void testReadOnlyToMutable() throws Exception {
+                        doTestSinglePackage("compiler/testData/loadJava/kotlinSignature/propagation/parameter/ReadOnlyToMutable.kt");
+                    }
+                    
                 }
                 
                 @TestMetadata("compiler/testData/loadJava/kotlinSignature/propagation/return")