Java: Improved completion for arguments of reflection calls getField() and getMethod() - extract the actual type from Class.forName and from generic type parameter to provide the code assistance (IDEA-167250)

java/java-tests/testData/codeInsight/completion/reflection/AssignChain.java

@@ -0,0 +1,15 @@
+class Main {
+  void foo() {
+    Class<?> a,b,c,d;
+    a = Class.forName("Test");
+    b = a;
+    c = b;
+    d = c;
+    d.getField("<caret>");
+  }
+}
+
+class Test {
+  public int num;
+  public int num2;
+}

java/java-tests/testData/codeInsight/completion/reflection/AssignChain_after.java

@@ -0,0 +1,15 @@
+class Main {
+  void foo() {
+    Class<?> a,b,c,d;
+    a = Class.forName("Test");
+    b = a;
+    c = b;
+    d = c;
+    d.getField("num2");
+  }
+}
+
+class Test {
+  public int num;
+  public int num2;
+}

java/java-tests/testData/codeInsight/completion/reflection/AssignCycle.java

@@ -0,0 +1,16 @@
+class Main {
+  void foo() {
+    Class<?> a,b,c,d;
+    d = Class.forName("Test");
+    a = d;
+    b = a;
+    c = b;
+    d = c;
+    d.getField("<caret>");
+  }
+}
+
+class Test {
+  public int num;
+  public int num2;
+}

java/java-tests/testData/codeInsight/completion/reflection/AssignCycle_after.java

@@ -0,0 +1,16 @@
+class Main {
+  void foo() {
+    Class<?> a,b,c,d;
+    d = Class.forName("Test");
+    a = d;
+    b = a;
+    c = b;
+    d = c;
+    d.getField("<caret>");
+  }
+}
+
+class Test {
+  public int num;
+  public int num2;
+}

java/java-tests/testData/codeInsight/completion/reflection/CallChain.java

@@ -0,0 +1,12 @@
+class Main {
+  void foo() throws ReflectiveOperationException {
+    bar().getField("<caret>");
+  }
+
+  Class<Test> bar() throws ClassNotFoundException { return (Class<Test>) Class.forName("Test"); }
+}
+
+class Test {
+  public int num;
+  public void method(){}
+}

java/java-tests/testData/codeInsight/completion/reflection/CallChain_after.java

@@ -0,0 +1,12 @@
+class Main {
+  void foo() throws ReflectiveOperationException {
+    bar().getField("num");
+  }
+
+  Class<Test> bar() throws ClassNotFoundException { return (Class<Test>) Class.forName("Test"); }
+}
+
+class Test {
+  public int num;
+  public void method(){}
+}

java/java-tests/testData/codeInsight/completion/reflection/InheritedDeclaredField.java

@@ -0,0 +1,15 @@
+class Main {
+  void foo() {
+    Test.class.getDeclaredField("<caret>");
+  }
+}
+
+class Test extends Parent {
+  public int num;
+  int num3;
+}
+
+class Parent {
+  public int num2;
+  int num4;
+}

java/java-tests/testData/codeInsight/completion/reflection/InheritedDeclaredField_after.java

@@ -0,0 +1,15 @@
+class Main {
+  void foo() {
+    Test.class.getDeclaredField("num3");
+  }
+}
+
+class Test extends Parent {
+  public int num;
+  int num3;
+}
+
+class Parent {
+  public int num2;
+  int num4;
+}

java/java-tests/testData/codeInsight/completion/reflection/InheritedDeclaredMethod.java

@@ -0,0 +1,15 @@
+class Main {
+  void foo() {
+    Test.class.getDeclaredMethod("<caret>");
+  }
+}
+
+class Test extends Parent {
+  public void method(){}
+  void method3(){}
+}
+
+class Parent {
+  public void method2(){}
+  void method4(){}
+}

java/java-tests/testData/codeInsight/completion/reflection/InheritedDeclaredMethod_after.java

@@ -0,0 +1,15 @@
+class Main {
+  void foo() {
+    Test.class.getDeclaredMethod("method3");
+  }
+}
+
+class Test extends Parent {
+  public void method(){}
+  void method3(){}
+}
+
+class Parent {
+  public void method2(){}
+  void method4(){}
+}

java/java-tests/testData/codeInsight/completion/reflection/InheritedField.java

@@ -0,0 +1,15 @@
+class Main {
+  void foo() {
+    Test.class.getField("<caret>");
+  }
+}
+
+class Test extends Parent {
+  public int num;
+  void int num3;
+}
+
+class Parent {
+  public int num2;
+  int num4;
+}

java/java-tests/testData/codeInsight/completion/reflection/InheritedField_after.java

@@ -0,0 +1,15 @@
+class Main {
+  void foo() {
+    Test.class.getField("num2");
+  }
+}
+
+class Test extends Parent {
+  public int num;
+  void int num3;
+}
+
+class Parent {
+  public int num2;
+  int num4;
+}

java/java-tests/testData/codeInsight/completion/reflection/InheritedMethod.java

@@ -0,0 +1,15 @@
+class Main {
+  void foo() {
+    Test.class.getMethod("<caret>");
+  }
+}
+
+class Test extends Parent {
+  public void method(){}
+  void method3(){}
+}
+
+class Parent {
+  public void method2(){}
+  void method4(){}
+}

java/java-tests/testData/codeInsight/completion/reflection/InheritedMethod_after.java

@@ -0,0 +1,15 @@
+class Main {
+  void foo() {
+    Test.class.getMethod("method2");
+  }
+}
+
+class Test extends Parent {
+  public void method(){}
+  void method3(){}
+}
+
+class Parent {
+  public void method2(){}
+  void method4(){}
+}

java/java-tests/testData/codeInsight/completion/reflection/InitChain.java

@@ -0,0 +1,21 @@
+class Main {
+  void foo() {
+    Class<?> a = Class.forName("Test");
+    Class<?> b = a;
+    Class<?> c = b;
+    Class<?> d = c;
+    Class<?> e = d;
+    Class<?> f = e;
+    Class<?> g = f;
+    Class<?> h = g;
+    Class<?> i = h;
+    Class<?> j = i;
+    Class<?> k = j;
+    k.getField("<caret>");
+  }
+}
+
+class Test {
+  public int num;
+  public int num2;
+}

java/java-tests/testData/codeInsight/completion/reflection/InitChain_after.java

@@ -0,0 +1,21 @@
+class Main {
+  void foo() {
+    Class<?> a = Class.forName("Test");
+    Class<?> b = a;
+    Class<?> c = b;
+    Class<?> d = c;
+    Class<?> e = d;
+    Class<?> f = e;
+    Class<?> g = f;
+    Class<?> h = g;
+    Class<?> i = h;
+    Class<?> j = i;
+    Class<?> k = j;
+    k.getField("num2");
+  }
+}
+
+class Test {
+  public int num;
+  public int num2;
+}

java/java-tests/testData/codeInsight/completion/reflection/InitRaw.java

@@ -0,0 +1,11 @@
+class Main {
+  void foo() {
+    Class<?> c = Test.class;
+    c.getMethod("<caret>");
+  }
+}
+
+class Test {
+  public void method(){}
+  public void method2(int n){}
+}

java/java-tests/testData/codeInsight/completion/reflection/InitRaw_after.java

@@ -0,0 +1,11 @@
+class Main {
+  void foo() {
+    Class<?> c = Test.class;
+    c.getMethod("method2", int.class);
+  }
+}
+
+class Test {
+  public void method(){}
+  public void method2(int n){}
+}

java/java-tests/testData/codeInsight/completion/reflection/InitWithType.java

@@ -0,0 +1,13 @@
+class Main {
+  void foo() {
+    Class<Test> c = bar();
+    c.getMethod("<caret>");
+  }
+
+  Class bar() { return Test.class; }
+}
+
+class Test {
+  public void method(){}
+  public void method2(int n){}
+}

java/java-tests/testData/codeInsight/completion/reflection/InitWithType_after.java

@@ -0,0 +1,13 @@
+class Main {
+  void foo() {
+    Class<Test> c = bar();
+    c.getMethod("method2", int.class);
+  }
+
+  Class bar() { return Test.class; }
+}
+
+class Test {
+  public void method(){}
+  public void method2(int n){}
+}

java/java-tests/testData/codeInsight/completion/reflection/Jdk14.java

@@ -0,0 +1,9 @@
+class Main {
+  void foo() {
+    Test.class.getMethod("<caret>");
+  }
+}
+
+class Test {
+  public void method(){}
+}

java/java-tests/testData/codeInsight/completion/reflection/Jdk14_after.java

@@ -0,0 +1,9 @@
+class Main {
+  void foo() {
+    Test.class.getMethod("method");
+  }
+}
+
+class Test {
+  public void method(){}
+}