PrimitiveTypeAdapter.java

package com.google.gson;

import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

/** 
 * Handles type conversion from some object to some primitive (or primitive
 * wrapper instance).
 * 
 * @author Joel Leitch
 */
final class PrimitiveTypeAdapter {
    @SuppressWarnings(value = "unchecked")
    public <T>T adaptType(Object from, Class<T> to) {
        Class<?> aClass = com.google.gson.internal.Primitives.wrap(to);
        if (com.google.gson.internal.Primitives.isWrapperType(aClass)) {
            if (aClass == (Character.class)) {
                String value = from.toString();
                if ((value.length()) == 1) {
                    return ((T)((Character)(from.toString().charAt(0))));
                } 
                throw new JsonParseException((("The value: " + value) + " contains more than a character."));
            } 
            try {
                Constructor<?> constructor = aClass.getConstructor(String.class);
                return ((T)(constructor.newInstance(from.toString())));
            } catch (NoSuchMethodException e) {
                throw new JsonParseException(e);
            } catch (IllegalAccessException e) {
                throw new JsonParseException(e);
            } catch (InvocationTargetException e) {
                throw new JsonParseException(e);
            } catch (InstantiationException e) {
                throw new JsonParseException(e);
            }
        } else if (Enum.class.isAssignableFrom(to)) {
            try {
                Method valuesMethod = to.getMethod("valueOf", String.class);
                return ((T)(valuesMethod.invoke(null, from.toString())));
            } catch (NoSuchMethodException e) {
                throw new RuntimeException(e);
            } catch (IllegalAccessException e) {
                throw new RuntimeException(e);
            } catch (InvocationTargetException e) {
                throw new RuntimeException(e);
            }
        } else {
            throw new JsonParseException(((("Can not adapt type " + (from.getClass())) + " to ") + to));
        }
    }
}