Merge pull request #135 from douglascrockford/big-numbers

Proposed BigInteger, BigDecimal support

Author: stleary

JSONArray.java

@@ -28,6 +28,7 @@ of this software and associated documentation files (the "Software"), to deal
 import java.io.StringWriter;
 import java.io.Writer;
 import java.lang.reflect.Array;
+import java.math.*;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Iterator;
@@ -75,7 +76,7 @@ of this software and associated documentation files (the "Software"), to deal
  * </ul>
  *
  * @author JSON.org
- * @version 2015-06-04
+ * @version 2015-07-06
  */
 public class JSONArray implements Iterable<Object> {
 
@@ -246,6 +247,46 @@ public double getDouble(int index) throws JSONException {
         }
     }
 
+    /**
+     * Get the BigDecimal value associated with an index.
+     *
+     * @param index
+     *            The index must be between 0 and length() - 1.
+     * @return The value.
+     * @throws JSONException
+     *             If the key is not found or if the value cannot be converted
+     *             to a BigDecimal.
+     */
+    public BigDecimal getBigDecimal (int index) throws JSONException {
+        Object object = this.get(index);
+        try {
+            return new BigDecimal(object.toString());
+        } catch (Exception e) {
+            throw new JSONException("JSONArray[" + index +
+                    "] could not convert to BigDecimal.");
+        }
+    }
+
+    /**
+     * Get the BigInteger value associated with an index.
+     *
+     * @param index
+     *            The index must be between 0 and length() - 1.
+     * @return The value.
+     * @throws JSONException
+     *             If the key is not found or if the value cannot be converted
+     *             to a BigInteger.
+     */
+    public BigInteger getBigInteger (int index) throws JSONException {
+        Object object = this.get(index);
+        try {
+            return new BigInteger(object.toString());
+        } catch (Exception e) {
+            throw new JSONException("JSONArray[" + index +
+                    "] could not convert to BigInteger.");
+        }
+    }
+
     /**
      * Get the int value associated with an index.
      *
@@ -490,6 +531,44 @@ public int optInt(int index, int defaultValue) {
         }
     }
 
+    /**
+     * Get the optional BigInteger value associated with an index. The 
+     * defaultValue is returned if there is no value for the index, or if the 
+     * value is not a number and cannot be converted to a number.
+     *
+     * @param index
+     *            The index must be between 0 and length() - 1.
+     * @param defaultValue
+     *            The default value.
+     * @return The value.
+     */
+    public BigInteger optBigInteger(int index, BigInteger defaultValue) {
+        try {
+            return this.getBigInteger(index);
+        } catch (Exception e) {
+            return defaultValue;
+        }
+    }
+
+    /**
+     * Get the optional BigDecimal value associated with an index. The 
+     * defaultValue is returned if there is no value for the index, or if the 
+     * value is not a number and cannot be converted to a number.
+     *
+     * @param index
+     *            The index must be between 0 and length() - 1.
+     * @param defaultValue
+     *            The default value.
+     * @return The value.
+     */
+    public BigDecimal optBigDecimal(int index, BigDecimal defaultValue) {
+        try {
+            return this.getBigDecimal(index);
+        } catch (Exception e) {
+            return defaultValue;
+        }
+    }
+
     /**
      * Get the optional JSONArray associated with an index.
      *

JSONObject.java

@@ -30,6 +30,7 @@ of this software and associated documentation files (the "Software"), to deal
 import java.lang.reflect.Field;
 import java.lang.reflect.Method;
 import java.lang.reflect.Modifier;
+import java.math.*;
 import java.util.Collection;
 import java.util.Enumeration;
 import java.util.HashMap;
@@ -91,7 +92,7 @@ of this software and associated documentation files (the "Software"), to deal
  * </ul>
  *
  * @author JSON.org
- * @version 2015-05-05
+ * @version 2015-07-06
  */
 public class JSONObject {
     /**
@@ -503,6 +504,46 @@ public boolean getBoolean(String key) throws JSONException {
                 + "] is not a Boolean.");
     }
 
+    /**
+     * Get the BigInteger value associated with a key.
+     *
+     * @param key
+     *            A key string.
+     * @return The numeric value.
+     * @throws JSONException
+     *             if the key is not found or if the value cannot 
+     *             be converted to BigInteger.
+     */
+    public BigInteger getBigInteger(String key) throws JSONException {
+        Object object = this.get(key);
+        try {
+            return new BigInteger(object.toString());
+        } catch (Exception e) {
+            throw new JSONException("JSONObject[" + quote(key)
+                    + "] could not be converted to BigInteger.");
+        }
+    }
+
+    /**
+     * Get the BigDecimal value associated with a key.
+     *
+     * @param key
+     *            A key string.
+     * @return The numeric value.
+     * @throws JSONException
+     *             if the key is not found or if the value
+     *             cannot be converted to BigDecimal.
+     */
+    public BigDecimal getBigDecimal(String key) throws JSONException {
+        Object object = this.get(key);
+        try {
+            return new BigDecimal(object.toString());
+        } catch (Exception e) {
+            throw new JSONException("JSONObject[" + quote(key)
+                    + "] could not be converted to BigDecimal.");
+        }
+    }
+
     /**
      * Get the double value associated with a key.
      *
@@ -688,6 +729,10 @@ public JSONObject increment(String key) throws JSONException {
         Object value = this.opt(key);
         if (value == null) {
             this.put(key, 1);
+        } else if (value instanceof BigInteger) {
+            this.put(key, ((BigInteger)value).add(BigInteger.ONE));
+        } else if (value instanceof BigDecimal) {
+            this.put(key, ((BigDecimal)value).add(BigDecimal.ONE));
         } else if (value instanceof Integer) {
             this.put(key, (Integer) value + 1);
         } else if (value instanceof Long) {
@@ -843,6 +888,44 @@ public double optDouble(String key) {
         return this.optDouble(key, Double.NaN);
     }
 
+    /**
+     * Get an optional BigInteger associated with a key, or the defaultValue if
+     * there is no such key or if its value is not a number. If the value is a
+     * string, an attempt will be made to evaluate it as a number.
+     *
+     * @param key
+     *            A key string.
+     * @param defaultValue
+     *            The default.
+     * @return An object which is the value.
+     */
+    public BigInteger optBigInteger(String key, BigInteger defaultValue) {
+        try {
+            return this.getBigInteger(key);
+        } catch (Exception e) {
+            return defaultValue;
+        }
+    }
+
+    /**
+     * Get an optional BigDecimal associated with a key, or the defaultValue if
+     * there is no such key or if its value is not a number. If the value is a
+     * string, an attempt will be made to evaluate it as a number.
+     *
+     * @param key
+     *            A key string.
+     * @param defaultValue
+     *            The default.
+     * @return An object which is the value.
+     */
+    public BigDecimal optBigDecimal(String key, BigDecimal defaultValue) {
+        try {
+            return this.getBigDecimal(key);
+        } catch (Exception e) {
+            return defaultValue;
+        }
+    }
+
     /**
      * Get an optional double associated with a key, or the defaultValue if
      * there is no such key or if its value is not a number. If the value is a
@@ -1550,7 +1633,8 @@ public static Object wrap(Object object) {
                     || object instanceof Short || object instanceof Integer
                     || object instanceof Long || object instanceof Boolean
                     || object instanceof Float || object instanceof Double
-                    || object instanceof String) {
+                    || object instanceof String || object instanceof BigInteger
+                    || object instanceof BigDecimal) {
                 return object;
             }