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-delombok/EqualsAndHashCodeWithSomeExistingMethods.java

@@ -0,0 +1,82 @@
+import lombok.*;
+import static lombok.AccessLevel.NONE;
+class EqualsAndHashCodeWithSomeExistingMethods {
+	int x;
+	public int hashCode() {
+		return 42;
+	}
+	@java.lang.SuppressWarnings("all")
+	public EqualsAndHashCodeWithSomeExistingMethods() {
+		
+	}
+	@java.lang.Override
+	@java.lang.SuppressWarnings("all")
+	public java.lang.String toString() {
+		return "EqualsAndHashCodeWithSomeExistingMethods(x=" + this.x + ")";
+	}
+}
+class EqualsAndHashCodeWithSomeExistingMethods2 {
+	int x;
+	public boolean canEqual(Object other) {
+		return false;
+	}
+	@java.lang.SuppressWarnings("all")
+	public EqualsAndHashCodeWithSomeExistingMethods2() {
+	}
+	@java.lang.Override
+	@java.lang.SuppressWarnings("all")
+	public java.lang.String toString() {
+		return "EqualsAndHashCodeWithSomeExistingMethods2(x=" + this.x + ")";
+	}
+}
+class EqualsAndHashCodeWithAllExistingMethods {
+	int x;
+	public int hashCode() {
+		return 42;
+	}
+	public boolean equals(Object other) {
+		return false;
+	}
+	@java.lang.SuppressWarnings("all")
+	public EqualsAndHashCodeWithAllExistingMethods() {
+	}
+	@java.lang.Override
+	@java.lang.SuppressWarnings("all")
+	public java.lang.String toString() {
+		return "EqualsAndHashCodeWithAllExistingMethods(x=" + this.x + ")";
+	}
+}
+class EqualsAndHashCodeWithNoExistingMethods {
+	int x;
+	@java.lang.SuppressWarnings("all")
+	public EqualsAndHashCodeWithNoExistingMethods() {
+		
+	}
+	@java.lang.Override
+	@java.lang.SuppressWarnings("all")
+	public boolean equals(final java.lang.Object o) {
+		if (o == this) return true;
+		if (!(o instanceof EqualsAndHashCodeWithNoExistingMethods)) return false;
+		final EqualsAndHashCodeWithNoExistingMethods other = (EqualsAndHashCodeWithNoExistingMethods)o;
+		if (!other.canEqual((java.lang.Object)this)) return false;
+		if (this.x != other.x) return false;
+		return true;
+	}
+	@java.lang.SuppressWarnings("all")
+	public boolean canEqual(final java.lang.Object other) {
+		return other instanceof EqualsAndHashCodeWithNoExistingMethods;
+	}
+	@java.lang.Override
+	@java.lang.SuppressWarnings("all")
+	public int hashCode() {
+		final int PRIME = 31;
+		int result = 1;
+		result = result * PRIME + this.x;
+		return result;
+	}
+	@java.lang.Override
+	@java.lang.SuppressWarnings("all")
+	public java.lang.String toString() {
+		return "EqualsAndHashCodeWithNoExistingMethods(x=" + this.x + ")";
+	}
+}