Fixed issue 513: If equals is present but hashCode isn't, @Data now generates a warning to explain this strange situation.

test/transform/resource/after-ecj/EqualsAndHashCodeWithSomeExistingMethods.java

@@ -0,0 +1,71 @@
+import lombok.*;
+import static lombok.AccessLevel.NONE;
+@Data @Getter(NONE) @Setter(NONE) class EqualsAndHashCodeWithSomeExistingMethods {
+  int x;
+  public int hashCode() {
+    return 42;
+  }
+  public @java.lang.Override @java.lang.SuppressWarnings("all") java.lang.String toString() {
+    return (("EqualsAndHashCodeWithSomeExistingMethods(x=" + this.x) + ")");
+  }
+  public @java.lang.SuppressWarnings("all") EqualsAndHashCodeWithSomeExistingMethods() {
+    super();
+  }
+}
+@Data @Getter(NONE) @Setter(NONE) class EqualsAndHashCodeWithSomeExistingMethods2 {
+  int x;
+  public boolean canEqual(Object other) {
+    return false;
+  }
+  public @java.lang.Override @java.lang.SuppressWarnings("all") java.lang.String toString() {
+    return (("EqualsAndHashCodeWithSomeExistingMethods2(x=" + this.x) + ")");
+  }
+  public @java.lang.SuppressWarnings("all") EqualsAndHashCodeWithSomeExistingMethods2() {
+    super();
+  }
+}
+@Data @Getter(NONE) @Setter(NONE) class EqualsAndHashCodeWithAllExistingMethods {
+  int x;
+  public int hashCode() {
+    return 42;
+  }
+  public boolean equals(Object other) {
+    return false;
+  }
+  public @java.lang.Override @java.lang.SuppressWarnings("all") java.lang.String toString() {
+    return (("EqualsAndHashCodeWithAllExistingMethods(x=" + this.x) + ")");
+  }
+  public @java.lang.SuppressWarnings("all") EqualsAndHashCodeWithAllExistingMethods() {
+    super();
+  }
+}
+@Data @Getter(AccessLevel.NONE) @Setter(lombok.AccessLevel.NONE) class EqualsAndHashCodeWithNoExistingMethods {
+  int x;
+  public @java.lang.Override @java.lang.SuppressWarnings("all") boolean equals(final java.lang.Object o) {
+    if ((o == this))
+        return true;
+    if ((! (o instanceof EqualsAndHashCodeWithNoExistingMethods)))
+        return false;
+    final @java.lang.SuppressWarnings("all") EqualsAndHashCodeWithNoExistingMethods other = (EqualsAndHashCodeWithNoExistingMethods) o;
+    if ((! other.canEqual((java.lang.Object) this)))
+        return false;
+    if ((this.x != other.x))
+        return false;
+    return true;
+  }
+  public @java.lang.SuppressWarnings("all") boolean canEqual(final java.lang.Object other) {
+    return (other instanceof EqualsAndHashCodeWithNoExistingMethods);
+  }
+  public @java.lang.Override @java.lang.SuppressWarnings("all") int hashCode() {
+    final int PRIME = 31;
+    int result = 1;
+    result = ((result * PRIME) + this.x);
+    return result;
+  }
+  public @java.lang.Override @java.lang.SuppressWarnings("all") java.lang.String toString() {
+    return (("EqualsAndHashCodeWithNoExistingMethods(x=" + this.x) + ")");
+  }
+  public @java.lang.SuppressWarnings("all") EqualsAndHashCodeWithNoExistingMethods() {
+    super();
+  }
+}