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Better StackTrace formatting and reflection get accessible.

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This commit is contained in:
Olof Larsson 2015-01-07 15:54:48 +01:00
parent 47086252b0
commit f53c353981
2 changed files with 147 additions and 9 deletions
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97
src/main/java/com/massivecraft/massivecore/util/MUtil.java
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@ -1,7 +1,5 @@
package com.massivecraft.massivecore.util;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.lang.reflect.Method;
import java.net.InetSocketAddress;
import java.util.ArrayList;
@ -201,10 +199,97 @@ public class MUtil
public static String getStackTraceString()
{
StringWriter sw = new StringWriter();
PrintWriter pw = new PrintWriter(sw);
new Throwable().printStackTrace(pw);
return sw.toString();
List<String> strings = getStackTraceStrings();
strings.remove(0);
return Txt.implode(strings, "\n");
}
public static List<String> getStackTraceStrings()
{
StackTraceElement[] elements = Thread.currentThread().getStackTrace();
elements = Arrays.copyOfRange(elements, 2, elements.length);
return getStackTraceStrings(elements);
}
public static List<String> getStackTraceStrings(List<StackTraceElement> elements)
{
List<String> ret = new MassiveList<String>();
for (StackTraceElement element : elements)
{
ret.add(getStackTraceString(element));
}
return ret;
}
public static List<String> getStackTraceStrings(StackTraceElement[] elements)
{
return getStackTraceStrings(Arrays.asList(elements));
}
// Same as the Java8 source but with color.
public static String getStackTraceString(StackTraceElement element)
{
ChatColor separatorColor = ChatColor.GRAY;
ChatColor classColor = ChatColor.YELLOW;
ChatColor methodColor = ChatColor.GREEN;
ChatColor fileColor = ChatColor.AQUA;
ChatColor lineColor = ChatColor.LIGHT_PURPLE;
String className = element.getClassName();
String methodName = element.getMethodName();
boolean nativeMethod = element.isNativeMethod();
String fileName = element.getFileName();
int lineNumber = element.getLineNumber();
StringBuilder ret = new StringBuilder();
ret.append(classColor);
ret.append(className);
ret.append(separatorColor);
ret.append(".");
ret.append(methodColor);
ret.append(methodName);
ret.append(separatorColor);
ret.append("(");
ret.append(fileColor);
if (nativeMethod)
{
ret.append("Native Method");
}
else
{
if (fileName != null && lineNumber >= 0)
{
ret.append(fileName);
ret.append(separatorColor);
ret.append(":");
ret.append(lineColor);
ret.append(lineNumber);
}
else
{
if (fileName != null)
{
ret.append(fileName);
}
else
{
ret.append("Unknown Source");
}
}
}
ret.append(separatorColor);
ret.append(")");
return ret.toString();
}
// -------------------------------------------- //

59
src/main/java/com/massivecraft/massivecore/util/ReflectionUtil.java
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@ -1,21 +1,70 @@
package com.massivecraft.massivecore.util;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.util.ArrayList;
import java.util.List;
public class ReflectionUtil
{
// -------------------------------------------- //
// CONSTANTS
// -------------------------------------------- //
private static Field FIELD_DOT_MODIFIERS;
static
{
try
{
FIELD_DOT_MODIFIERS = Field.class.getDeclaredField("modifiers");
FIELD_DOT_MODIFIERS.setAccessible(true);
}
catch (Exception e)
{
e.printStackTrace();
}
}
// -------------------------------------------- //
// MAKE ACCESSIBLE
// -------------------------------------------- //
public static boolean makeAccessible(Field field)
{
try
{
// Mark the field as accessible using reflection.
field.setAccessible(true);
// Remove the final modifier from the field.
// http://stackoverflow.com/questions/2474017/using-reflection-to-change-static-final-file-separatorchar-for-unit-testing
FIELD_DOT_MODIFIERS.setInt(field, field.getModifiers() & ~Modifier.FINAL);
return true;
}
catch (Exception e)
{
e.printStackTrace();
return false;
}
}
// -------------------------------------------- //
// FIELD SIMPLE: GET & SET & TRANSFER
// -------------------------------------------- //
public static Object getField(Class<?> clazz, String fieldName, Object object)
{
try
{
Field field = clazz.getDeclaredField(fieldName);
field.setAccessible(true);
makeAccessible(field);
return field.get(object);
}
catch (Exception e)
{
e.printStackTrace();
return null;
}
}
@ -25,12 +74,13 @@ public class ReflectionUtil
try
{
Field field = clazz.getDeclaredField(fieldName);
field.setAccessible(true);
makeAccessible(field);
field.set(object, value);
return true;
}
catch (Exception e)
{
e.printStackTrace();
return false;
}
}
@ -40,13 +90,14 @@ public class ReflectionUtil
try
{
Field field = clazz.getDeclaredField(fieldName);
field.setAccessible(true);
makeAccessible(field);
Object value = field.get(from);
field.set(to, value);
return true;
}
catch (Exception e)
{
e.printStackTrace();
return false;
}
}
@ -75,4 +126,6 @@ public class ReflectionUtil
return transferFields(clazz, from, to, null);
}
}