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jamesrcountsjamesrcounts
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Work on puzzle solver
1 parent 37de498 commit 78f4fb6

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Lines changed: 565 additions & 142 deletions

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‎src/main/java/org/teachingextensions/approvals/lite/util/ObjectUtils.java‎

Lines changed: 107 additions & 90 deletions
Original file line numberDiff line numberDiff line change
@@ -1,118 +1,135 @@
11
package org.teachingextensions.approvals.lite.util;
22

3+
import java.awt.Image;
34
import java.lang.reflect.Array;
45
import java.lang.reflect.Method;
6+
import java.net.URL;
57
import java.util.ArrayList;
68
import java.util.Arrays;
79
import java.util.List;
810

11+
import javax.swing.ImageIcon;
12+
913
/**
1014
* A static class of convenience functions for Manipulating objects
1115
*/
1216
public class ObjectUtils {
1317

14-
/**
15-
* A convenience function to check if two objects are equal.
16-
*
17-
* @param s1 The first object
18-
* @param s2 The second object
19-
* @return true if Equal.
20-
*/
21-
public static boolean isEqual(Object s1, Object s2) {
22-
return s1 == s2 || (s1 != null) && s1.equals(s2);
23-
}
18+
/**
19+
* A convenience function to check if two objects are equal.
20+
*
21+
* @param s1
22+
* The first object
23+
* @param s2
24+
* The second object
25+
* @return true if Equal.
26+
*/
27+
public static boolean isEqual(Object s1, Object s2) {
28+
return s1 == s2 || (s1 != null) && s1.equals(s2);
29+
}
2430

25-
public static boolean isThisInstanceOfThat(Class<?> thiz, Class<?> that) {
26-
return that.isAssignableFrom(thiz);
27-
}
31+
public static boolean isThisInstanceOfThat(Class<?> thiz, Class<?> that) {
32+
return that.isAssignableFrom(thiz);
33+
}
2834

29-
public static Error throwAsError(Throwable t) throws Error {
30-
if (t instanceof RuntimeException) {
31-
throw (RuntimeException) t;
32-
} else if (t instanceof Error) {
33-
throw (Error) t;
34-
} else {
35-
throw new Error(t);
36-
}
35+
public static Error throwAsError(Throwable t) throws Error {
36+
if (t instanceof RuntimeException) {
37+
throw (RuntimeException) t;
38+
} else if (t instanceof Error) {
39+
throw (Error) t;
40+
} else {
41+
throw new Error(t);
3742
}
43+
}
3844

39-
/**
40-
* @param from the source array
41-
* @param methodName the filter method
42-
* @return a filtered array
43-
*/
44-
public static Object[] extractArray(Object[] from, String methodName) {
45-
try {
46-
if (from == null || from.length == 0) {
47-
return new Object[0];
48-
}
49-
Method method = getGreatestCommonDenominator(from, methodName);
50-
Object[] array;
51-
if (Object.class.isAssignableFrom(method.getReturnType())) {
52-
array = (Object[]) Array.newInstance(method.getReturnType(),
53-
from.length);
54-
} else {
55-
array = (Object[]) Array.newInstance(
56-
ClassUtils.getWrapperClass(method.getReturnType()),
57-
from.length);
58-
}
59-
for (int i = 0; i < from.length; i++) {
60-
array[i] = method.invoke(from[i], (Object[]) null);
61-
}
62-
return array;
63-
} catch (Exception e) {
64-
MySystem.warning(e);
65-
throw ObjectUtils.throwAsError(e);
66-
}
45+
/**
46+
* @param from
47+
* the source array
48+
* @param methodName
49+
* the filter method
50+
* @return a filtered array
51+
*/
52+
public static Object[] extractArray(Object[] from, String methodName) {
53+
try {
54+
if (from == null || from.length == 0) {
55+
return new Object[0];
56+
}
57+
Method method = getGreatestCommonDenominator(from, methodName);
58+
Object[] array;
59+
if (Object.class.isAssignableFrom(method.getReturnType())) {
60+
array = (Object[]) Array.newInstance(method.getReturnType(),
61+
from.length);
62+
} else {
63+
array = (Object[]) Array.newInstance(
64+
ClassUtils.getWrapperClass(method.getReturnType()), from.length);
65+
}
66+
for (int i = 0; i < from.length; i++) {
67+
array[i] = method.invoke(from[i], (Object[]) null);
68+
}
69+
return array;
70+
} catch (Exception e) {
71+
MySystem.warning(e);
72+
throw ObjectUtils.throwAsError(e);
6773
}
74+
}
6875

69-
public static Method getGreatestCommonDenominator(Object[] from,
70-
String methodName) throws SecurityException, NoSuchMethodException {
71-
List<Class<?>> classes = new ArrayList<>();
72-
ArrayUtils.addArray(classes, getAllCastableClasses(from[0]));
73-
for (Object o : from) {
74-
for (int i = classes.size() - 1; i >= 0; i--) {
75-
Class clazz = classes.get(i);
76-
if (!isThisInstanceOfThat(o.getClass(), clazz)
77-
|| !ClassUtils.hasMethod(clazz, methodName)) {
78-
classes.remove(i);
79-
}
80-
}
76+
public static Method getGreatestCommonDenominator(Object[] from,
77+
String methodName) throws SecurityException, NoSuchMethodException {
78+
List<Class<?>> classes = new ArrayList<>();
79+
ArrayUtils.addArray(classes, getAllCastableClasses(from[0]));
80+
for (Object o : from) {
81+
for (int i = classes.size() - 1; i >= 0; i--) {
82+
Class clazz = classes.get(i);
83+
if (!isThisInstanceOfThat(o.getClass(), clazz)
84+
|| !ClassUtils.hasMethod(clazz, methodName)) {
85+
classes.remove(i);
8186
}
82-
return classes.size() == 0 ? null : ArrayUtils.getLast(classes)
83-
.getMethod(methodName, (Class[]) null);
87+
}
8488
}
89+
return classes.size() == 0 ? null : ArrayUtils.getLast(classes).getMethod(
90+
methodName, (Class[]) null);
91+
}
8592

86-
private static Class[] getAllCastableClasses(Object object) {
87-
Class<?> clazz = object.getClass();
88-
ArrayList<Object> list = new ArrayList<>();
89-
while (clazz != null) {
90-
list.add(clazz);
91-
ArrayUtils.addArray(list, clazz.getInterfaces());
92-
clazz = clazz.getSuperclass();
93-
}
94-
Class[] found = list.toArray(new Class[list.size()]);
95-
ArrayUtils.toReverseArray(found);
96-
return found;
93+
private static Class[] getAllCastableClasses(Object object) {
94+
Class<?> clazz = object.getClass();
95+
ArrayList<Object> list = new ArrayList<>();
96+
while (clazz != null) {
97+
list.add(clazz);
98+
ArrayUtils.addArray(list, clazz.getInterfaces());
99+
clazz = clazz.getSuperclass();
97100
}
101+
Class[] found = list.toArray(new Class[list.size()]);
102+
ArrayUtils.toReverseArray(found);
103+
return found;
104+
}
98105

99-
public static void assertInstance(Class classes[], Object object) {
100-
if (object == null) {
101-
throw new NullPointerException("Expected Object of Type "
102-
+ Arrays.asList(extractArray(classes, "getName"))
103-
+ " but was null");
104-
}
105-
for (Class aClass : classes) {
106-
if (ClassUtils.getWrapperClass(aClass).isInstance(object)) {
107-
return;
108-
}
109-
}
110-
throw new IllegalArgumentException("Expected Object of Type "
111-
+ Arrays.asList(extractArray(classes, "getName")) + " but got "
112-
+ object.getClass().getName());
106+
public static void assertInstance(Class classes[], Object object) {
107+
if (object == null) {
108+
throw new NullPointerException("Expected Object of Type "
109+
+ Arrays.asList(extractArray(classes, "getName")) + " but was null");
110+
}
111+
for (Class aClass : classes) {
112+
if (ClassUtils.getWrapperClass(aClass).isInstance(object)) {
113+
return;
114+
}
113115
}
116+
throw new IllegalArgumentException("Expected Object of Type "
117+
+ Arrays.asList(extractArray(classes, "getName")) + " but got "
118+
+ object.getClass().getName());
119+
}
114120

115-
public static String getClassName(Object o) {
116-
return o == null ? "null" : o.getClass().getName();
121+
public static String getClassName(Object o) {
122+
return o == null ? "null" : o.getClass().getName();
123+
}
124+
125+
public static Image loadImage(Class<?> type, String name) {
126+
URL resource = type.getResource(name);
127+
if (resource == null) {
128+
resource = type.getClassLoader().getResource(name);
129+
}
130+
if (resource == null) {
131+
throw new IllegalStateException("Could not find image: " + name);
117132
}
133+
return new ImageIcon(resource).getImage();
134+
}
118135
}

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