JSONArray.java
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上传日期:2022-07-12
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文件大小:30k
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Jsp/Servlet
开发平台:
Java
- package org.json;
- /*
- Copyright (c) 2002 JSON.org
- Permission is hereby granted, free of charge, to any person obtaining a copy
- of this software and associated documentation files (the "Software"), to deal
- in the Software without restriction, including without limitation the rights
- to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- copies of the Software, and to permit persons to whom the Software is
- furnished to do so, subject to the following conditions:
- The above copyright notice and this permission notice shall be included in all
- copies or substantial portions of the Software.
- The Software shall be used for Good, not Evil.
- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- SOFTWARE.
- */
- import java.io.IOException;
- import java.io.Writer;
- import java.lang.reflect.Array;
- import java.util.ArrayList;
- import java.util.Collection;
- import java.util.Iterator;
- import java.util.Map;
- /**
- * A JSONArray is an ordered sequence of values. Its external text form is a
- * string wrapped in square brackets with commas separating the values. The
- * internal form is an object having <code>get</code> and <code>opt</code>
- * methods for accessing the values by index, and <code>put</code> methods for
- * adding or replacing values. The values can be any of these types:
- * <code>Boolean</code>, <code>JSONArray</code>, <code>JSONObject</code>,
- * <code>Number</code>, <code>String</code>, or the
- * <code>JSONObject.NULL object</code>.
- * <p>
- * The constructor can convert a JSON text into a Java object. The
- * <code>toString</code> method converts to JSON text.
- * <p>
- * A <code>get</code> method returns a value if one can be found, and throws an
- * exception if one cannot be found. An <code>opt</code> method returns a
- * default value instead of throwing an exception, and so is useful for
- * obtaining optional values.
- * <p>
- * The generic <code>get()</code> and <code>opt()</code> methods return an
- * object which you can cast or query for type. There are also typed
- * <code>get</code> and <code>opt</code> methods that do type checking and type
- * coercion for you.
- * <p>
- * The texts produced by the <code>toString</code> methods strictly conform to
- * JSON syntax rules. The constructors are more forgiving in the texts they will
- * accept:
- * <ul>
- * <li>An extra <code>,</code> <small>(comma)</small> may appear just
- * before the closing bracket.</li>
- * <li>The <code>null</code> value will be inserted when there
- * is <code>,</code> <small>(comma)</small> elision.</li>
- * <li>Strings may be quoted with <code>'</code> <small>(single
- * quote)</small>.</li>
- * <li>Strings do not need to be quoted at all if they do not begin with a quote
- * or single quote, and if they do not contain leading or trailing spaces,
- * and if they do not contain any of these characters:
- * <code>{ } [ ] / : , = ; #</code> and if they do not look like numbers
- * and if they are not the reserved words <code>true</code>,
- * <code>false</code>, or <code>null</code>.</li>
- * <li>Values can be separated by <code>;</code> <small>(semicolon)</small> as
- * well as by <code>,</code> <small>(comma)</small>.</li>
- * <li>Numbers may have the <code>0-</code> <small>(octal)</small> or
- * <code>0x-</code> <small>(hex)</small> prefix.</li>
- * </ul>
- * @author JSON.org
- * @version 2009-04-13
- */
- public class JSONArray {
- /**
- * The arrayList where the JSONArray's properties are kept.
- */
- private ArrayList myArrayList;
- /**
- * Construct an empty JSONArray.
- */
- public JSONArray() {
- this.myArrayList = new ArrayList();
- }
- /**
- * Construct a JSONArray from a JSONTokener.
- * @param x A JSONTokener
- * @throws JSONException If there is a syntax error.
- */
- public JSONArray(JSONTokener x) throws JSONException {
- this();
- char c = x.nextClean();
- char q;
- if (c == '[') {
- q = ']';
- } else if (c == '(') {
- q = ')';
- } else {
- throw x.syntaxError("A JSONArray text must start with '['");
- }
- if (x.nextClean() == ']') {
- return;
- }
- x.back();
- for (;;) {
- if (x.nextClean() == ',') {
- x.back();
- this.myArrayList.add(null);
- } else {
- x.back();
- this.myArrayList.add(x.nextValue());
- }
- c = x.nextClean();
- switch (c) {
- case ';':
- case ',':
- if (x.nextClean() == ']') {
- return;
- }
- x.back();
- break;
- case ']':
- case ')':
- if (q != c) {
- throw x.syntaxError("Expected a '" + new Character(q) + "'");
- }
- return;
- default:
- throw x.syntaxError("Expected a ',' or ']'");
- }
- }
- }
- /**
- * Construct a JSONArray from a source JSON text.
- * @param source A string that begins with
- * <code>[</code> <small>(left bracket)</small>
- * and ends with <code>]</code> <small>(right bracket)</small>.
- * @throws JSONException If there is a syntax error.
- */
- public JSONArray(String source) throws JSONException {
- this(new JSONTokener(source));
- }
- /**
- * Construct a JSONArray from a Collection.
- * @param collection A Collection.
- */
- public JSONArray(Collection collection) {
- this.myArrayList = (collection == null) ?
- new ArrayList() :
- new ArrayList(collection);
- }
- /**
- * Construct a JSONArray from a collection of beans.
- * The collection should have Java Beans.
- *
- * @throws JSONException If not an array.
- */
- public JSONArray(Collection collection, boolean includeSuperClass) {
- this.myArrayList = new ArrayList();
- if (collection != null) {
- Iterator iter = collection.iterator();;
- while (iter.hasNext()) {
- Object o = iter.next();
- if (o instanceof Map) {
- this.myArrayList.add(new JSONObject((Map)o, includeSuperClass));
- } else if (!JSONObject.isStandardProperty(o.getClass())) {
- this.myArrayList.add(new JSONObject(o, includeSuperClass));
- } else {
- this.myArrayList.add(o);
- }
- }
- }
- }
- /**
- * Construct a JSONArray from an array
- * @throws JSONException If not an array.
- */
- public JSONArray(Object array) throws JSONException {
- this();
- if (array.getClass().isArray()) {
- int length = Array.getLength(array);
- for (int i = 0; i < length; i += 1) {
- this.put(Array.get(array, i));
- }
- } else {
- throw new JSONException("JSONArray initial value should be a string or collection or array.");
- }
- }
- /**
- * Construct a JSONArray from an array with a bean.
- * The array should have Java Beans.
- *
- * @throws JSONException If not an array.
- */
- public JSONArray(Object array,boolean includeSuperClass) throws JSONException {
- this();
- if (array.getClass().isArray()) {
- int length = Array.getLength(array);
- for (int i = 0; i < length; i += 1) {
- Object o = Array.get(array, i);
- if (JSONObject.isStandardProperty(o.getClass())) {
- this.myArrayList.add(o);
- } else {
- this.myArrayList.add(new JSONObject(o,includeSuperClass));
- }
- }
- } else {
- throw new JSONException("JSONArray initial value should be a string or collection or array.");
- }
- }
- /**
- * Get the object value associated with an index.
- * @param index
- * The index must be between 0 and length() - 1.
- * @return An object value.
- * @throws JSONException If there is no value for the index.
- */
- public Object get(int index) throws JSONException {
- Object o = opt(index);
- if (o == null) {
- throw new JSONException("JSONArray[" + index + "] not found.");
- }
- return o;
- }
- /**
- * Get the boolean value associated with an index.
- * The string values "true" and "false" are converted to boolean.
- *
- * @param index The index must be between 0 and length() - 1.
- * @return The truth.
- * @throws JSONException If there is no value for the index or if the
- * value is not convertable to boolean.
- */
- public boolean getBoolean(int index) throws JSONException {
- Object o = get(index);
- if (o.equals(Boolean.FALSE) ||
- (o instanceof String &&
- ((String)o).equalsIgnoreCase("false"))) {
- return false;
- } else if (o.equals(Boolean.TRUE) ||
- (o instanceof String &&
- ((String)o).equalsIgnoreCase("true"))) {
- return true;
- }
- throw new JSONException("JSONArray[" + index + "] is not a Boolean.");
- }
- /**
- * Get the double 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 number.
- */
- public double getDouble(int index) throws JSONException {
- Object o = get(index);
- try {
- return o instanceof Number ?
- ((Number)o).doubleValue() :
- Double.valueOf((String)o).doubleValue();
- } catch (Exception e) {
- throw new JSONException("JSONArray[" + index +
- "] is not a number.");
- }
- }
- /**
- * Get the int 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 number.
- * if the value cannot be converted to a number.
- */
- public int getInt(int index) throws JSONException {
- Object o = get(index);
- return o instanceof Number ?
- ((Number)o).intValue() : (int)getDouble(index);
- }
- /**
- * Get the JSONArray associated with an index.
- * @param index The index must be between 0 and length() - 1.
- * @return A JSONArray value.
- * @throws JSONException If there is no value for the index. or if the
- * value is not a JSONArray
- */
- public JSONArray getJSONArray(int index) throws JSONException {
- Object o = get(index);
- if (o instanceof JSONArray) {
- return (JSONArray)o;
- }
- throw new JSONException("JSONArray[" + index +
- "] is not a JSONArray.");
- }
- /**
- * Get the JSONObject associated with an index.
- * @param index subscript
- * @return A JSONObject value.
- * @throws JSONException If there is no value for the index or if the
- * value is not a JSONObject
- */
- public JSONObject getJSONObject(int index) throws JSONException {
- Object o = get(index);
- if (o instanceof JSONObject) {
- return (JSONObject)o;
- }
- throw new JSONException("JSONArray[" + index +
- "] is not a JSONObject.");
- }
- /**
- * Get the long 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 number.
- */
- public long getLong(int index) throws JSONException {
- Object o = get(index);
- return o instanceof Number ?
- ((Number)o).longValue() : (long)getDouble(index);
- }
- /**
- * Get the string associated with an index.
- * @param index The index must be between 0 and length() - 1.
- * @return A string value.
- * @throws JSONException If there is no value for the index.
- */
- public String getString(int index) throws JSONException {
- return get(index).toString();
- }
- /**
- * Determine if the value is null.
- * @param index The index must be between 0 and length() - 1.
- * @return true if the value at the index is null, or if there is no value.
- */
- public boolean isNull(int index) {
- return JSONObject.NULL.equals(opt(index));
- }
- /**
- * Make a string from the contents of this JSONArray. The
- * <code>separator</code> string is inserted between each element.
- * Warning: This method assumes that the data structure is acyclical.
- * @param separator A string that will be inserted between the elements.
- * @return a string.
- * @throws JSONException If the array contains an invalid number.
- */
- public String join(String separator) throws JSONException {
- int len = length();
- StringBuffer sb = new StringBuffer();
- for (int i = 0; i < len; i += 1) {
- if (i > 0) {
- sb.append(separator);
- }
- sb.append(JSONObject.valueToString(this.myArrayList.get(i)));
- }
- return sb.toString();
- }
- /**
- * Get the number of elements in the JSONArray, included nulls.
- *
- * @return The length (or size).
- */
- public int length() {
- return this.myArrayList.size();
- }
- /**
- * Get the optional object value associated with an index.
- * @param index The index must be between 0 and length() - 1.
- * @return An object value, or null if there is no
- * object at that index.
- */
- public Object opt(int index) {
- return (index < 0 || index >= length()) ?
- null : this.myArrayList.get(index);
- }
- /**
- * Get the optional boolean value associated with an index.
- * It returns false if there is no value at that index,
- * or if the value is not Boolean.TRUE or the String "true".
- *
- * @param index The index must be between 0 and length() - 1.
- * @return The truth.
- */
- public boolean optBoolean(int index) {
- return optBoolean(index, false);
- }
- /**
- * Get the optional boolean value associated with an index.
- * It returns the defaultValue if there is no value at that index or if
- * it is not a Boolean or the String "true" or "false" (case insensitive).
- *
- * @param index The index must be between 0 and length() - 1.
- * @param defaultValue A boolean default.
- * @return The truth.
- */
- public boolean optBoolean(int index, boolean defaultValue) {
- try {
- return getBoolean(index);
- } catch (Exception e) {
- return defaultValue;
- }
- }
- /**
- * Get the optional double value associated with an index.
- * NaN 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.
- * @return The value.
- */
- public double optDouble(int index) {
- return optDouble(index, Double.NaN);
- }
- /**
- * Get the optional double 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 subscript
- * @param defaultValue The default value.
- * @return The value.
- */
- public double optDouble(int index, double defaultValue) {
- try {
- return getDouble(index);
- } catch (Exception e) {
- return defaultValue;
- }
- }
- /**
- * Get the optional int value associated with an index.
- * Zero 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.
- * @return The value.
- */
- public int optInt(int index) {
- return optInt(index, 0);
- }
- /**
- * Get the optional int 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 int optInt(int index, int defaultValue) {
- try {
- return getInt(index);
- } catch (Exception e) {
- return defaultValue;
- }
- }
- /**
- * Get the optional JSONArray associated with an index.
- * @param index subscript
- * @return A JSONArray value, or null if the index has no value,
- * or if the value is not a JSONArray.
- */
- public JSONArray optJSONArray(int index) {
- Object o = opt(index);
- return o instanceof JSONArray ? (JSONArray)o : null;
- }
- /**
- * Get the optional JSONObject associated with an index.
- * Null is returned if the key is not found, or null if the index has
- * no value, or if the value is not a JSONObject.
- *
- * @param index The index must be between 0 and length() - 1.
- * @return A JSONObject value.
- */
- public JSONObject optJSONObject(int index) {
- Object o = opt(index);
- return o instanceof JSONObject ? (JSONObject)o : null;
- }
- /**
- * Get the optional long value associated with an index.
- * Zero 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.
- * @return The value.
- */
- public long optLong(int index) {
- return optLong(index, 0);
- }
- /**
- * Get the optional long 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 long optLong(int index, long defaultValue) {
- try {
- return getLong(index);
- } catch (Exception e) {
- return defaultValue;
- }
- }
- /**
- * Get the optional string value associated with an index. It returns an
- * empty string if there is no value at that index. If the value
- * is not a string and is not null, then it is coverted to a string.
- *
- * @param index The index must be between 0 and length() - 1.
- * @return A String value.
- */
- public String optString(int index) {
- return optString(index, "");
- }
- /**
- * Get the optional string associated with an index.
- * The defaultValue is returned if the key is not found.
- *
- * @param index The index must be between 0 and length() - 1.
- * @param defaultValue The default value.
- * @return A String value.
- */
- public String optString(int index, String defaultValue) {
- Object o = opt(index);
- return o != null ? o.toString() : defaultValue;
- }
- /**
- * Append a boolean value. This increases the array's length by one.
- *
- * @param value A boolean value.
- * @return this.
- */
- public JSONArray put(boolean value) {
- put(value ? Boolean.TRUE : Boolean.FALSE);
- return this;
- }
- /**
- * Put a value in the JSONArray, where the value will be a
- * JSONArray which is produced from a Collection.
- * @param value A Collection value.
- * @return this.
- */
- public JSONArray put(Collection value) {
- put(new JSONArray(value));
- return this;
- }
- /**
- * Append a double value. This increases the array's length by one.
- *
- * @param value A double value.
- * @throws JSONException if the value is not finite.
- * @return this.
- */
- public JSONArray put(double value) throws JSONException {
- Double d = new Double(value);
- JSONObject.testValidity(d);
- put(d);
- return this;
- }
- /**
- * Append an int value. This increases the array's length by one.
- *
- * @param value An int value.
- * @return this.
- */
- public JSONArray put(int value) {
- put(new Integer(value));
- return this;
- }
- /**
- * Append an long value. This increases the array's length by one.
- *
- * @param value A long value.
- * @return this.
- */
- public JSONArray put(long value) {
- put(new Long(value));
- return this;
- }
- /**
- * Put a value in the JSONArray, where the value will be a
- * JSONObject which is produced from a Map.
- * @param value A Map value.
- * @return this.
- */
- public JSONArray put(Map value) {
- put(new JSONObject(value));
- return this;
- }
- /**
- * Append an object value. This increases the array's length by one.
- * @param value An object value. The value should be a
- * Boolean, Double, Integer, JSONArray, JSONObject, Long, or String, or the
- * JSONObject.NULL object.
- * @return this.
- */
- public JSONArray put(Object value) {
- this.myArrayList.add(value);
- return this;
- }
- /**
- * Put or replace a boolean value in the JSONArray. If the index is greater
- * than the length of the JSONArray, then null elements will be added as
- * necessary to pad it out.
- * @param index The subscript.
- * @param value A boolean value.
- * @return this.
- * @throws JSONException If the index is negative.
- */
- public JSONArray put(int index, boolean value) throws JSONException {
- put(index, value ? Boolean.TRUE : Boolean.FALSE);
- return this;
- }
- /**
- * Put a value in the JSONArray, where the value will be a
- * JSONArray which is produced from a Collection.
- * @param index The subscript.
- * @param value A Collection value.
- * @return this.
- * @throws JSONException If the index is negative or if the value is
- * not finite.
- */
- public JSONArray put(int index, Collection value) throws JSONException {
- put(index, new JSONArray(value));
- return this;
- }
- /**
- * Put or replace a double value. If the index is greater than the length of
- * the JSONArray, then null elements will be added as necessary to pad
- * it out.
- * @param index The subscript.
- * @param value A double value.
- * @return this.
- * @throws JSONException If the index is negative or if the value is
- * not finite.
- */
- public JSONArray put(int index, double value) throws JSONException {
- put(index, new Double(value));
- return this;
- }
- /**
- * Put or replace an int value. If the index is greater than the length of
- * the JSONArray, then null elements will be added as necessary to pad
- * it out.
- * @param index The subscript.
- * @param value An int value.
- * @return this.
- * @throws JSONException If the index is negative.
- */
- public JSONArray put(int index, int value) throws JSONException {
- put(index, new Integer(value));
- return this;
- }
- /**
- * Put or replace a long value. If the index is greater than the length of
- * the JSONArray, then null elements will be added as necessary to pad
- * it out.
- * @param index The subscript.
- * @param value A long value.
- * @return this.
- * @throws JSONException If the index is negative.
- */
- public JSONArray put(int index, long value) throws JSONException {
- put(index, new Long(value));
- return this;
- }
- /**
- * Put a value in the JSONArray, where the value will be a
- * JSONObject which is produced from a Map.
- * @param index The subscript.
- * @param value The Map value.
- * @return this.
- * @throws JSONException If the index is negative or if the the value is
- * an invalid number.
- */
- public JSONArray put(int index, Map value) throws JSONException {
- put(index, new JSONObject(value));
- return this;
- }
- /**
- * Put or replace an object value in the JSONArray. If the index is greater
- * than the length of the JSONArray, then null elements will be added as
- * necessary to pad it out.
- * @param index The subscript.
- * @param value The value to put into the array. The value should be a
- * Boolean, Double, Integer, JSONArray, JSONObject, Long, or String, or the
- * JSONObject.NULL object.
- * @return this.
- * @throws JSONException If the index is negative or if the the value is
- * an invalid number.
- */
- public JSONArray put(int index, Object value) throws JSONException {
- JSONObject.testValidity(value);
- if (index < 0) {
- throw new JSONException("JSONArray[" + index + "] not found.");
- }
- if (index < length()) {
- this.myArrayList.set(index, value);
- } else {
- while (index != length()) {
- put(JSONObject.NULL);
- }
- put(value);
- }
- return this;
- }
- /**
- * Remove a index and close the hole.
- * @param index The index of the element to be removed.
- * @return The value that was associated with the index,
- * or null if there was no value.
- */
- public Object remove(int index) {
- Object o = opt(index);
- this.myArrayList.remove(index);
- return o;
- }
- /**
- * Produce a JSONObject by combining a JSONArray of names with the values
- * of this JSONArray.
- * @param names A JSONArray containing a list of key strings. These will be
- * paired with the values.
- * @return A JSONObject, or null if there are no names or if this JSONArray
- * has no values.
- * @throws JSONException If any of the names are null.
- */
- public JSONObject toJSONObject(JSONArray names) throws JSONException {
- if (names == null || names.length() == 0 || length() == 0) {
- return null;
- }
- JSONObject jo = new JSONObject();
- for (int i = 0; i < names.length(); i += 1) {
- jo.put(names.getString(i), this.opt(i));
- }
- return jo;
- }
- /**
- * Make a JSON text of this JSONArray. For compactness, no
- * unnecessary whitespace is added. If it is not possible to produce a
- * syntactically correct JSON text then null will be returned instead. This
- * could occur if the array contains an invalid number.
- * <p>
- * Warning: This method assumes that the data structure is acyclical.
- *
- * @return a printable, displayable, transmittable
- * representation of the array.
- */
- public String toString() {
- try {
- return '[' + join(",") + ']';
- } catch (Exception e) {
- return null;
- }
- }
- /**
- * Make a prettyprinted JSON text of this JSONArray.
- * Warning: This method assumes that the data structure is acyclical.
- * @param indentFactor The number of spaces to add to each level of
- * indentation.
- * @return a printable, displayable, transmittable
- * representation of the object, beginning
- * with <code>[</code> <small>(left bracket)</small> and ending
- * with <code>]</code> <small>(right bracket)</small>.
- * @throws JSONException
- */
- public String toString(int indentFactor) throws JSONException {
- return toString(indentFactor, 0);
- }
- /**
- * Make a prettyprinted JSON text of this JSONArray.
- * Warning: This method assumes that the data structure is acyclical.
- * @param indentFactor The number of spaces to add to each level of
- * indentation.
- * @param indent The indention of the top level.
- * @return a printable, displayable, transmittable
- * representation of the array.
- * @throws JSONException
- */
- String toString(int indentFactor, int indent) throws JSONException {
- int len = length();
- if (len == 0) {
- return "[]";
- }
- int i;
- StringBuffer sb = new StringBuffer("[");
- if (len == 1) {
- sb.append(JSONObject.valueToString(this.myArrayList.get(0),
- indentFactor, indent));
- } else {
- int newindent = indent + indentFactor;
- sb.append('n');
- for (i = 0; i < len; i += 1) {
- if (i > 0) {
- sb.append(",n");
- }
- for (int j = 0; j < newindent; j += 1) {
- sb.append(' ');
- }
- sb.append(JSONObject.valueToString(this.myArrayList.get(i),
- indentFactor, newindent));
- }
- sb.append('n');
- for (i = 0; i < indent; i += 1) {
- sb.append(' ');
- }
- }
- sb.append(']');
- return sb.toString();
- }
- /**
- * Write the contents of the JSONArray as JSON text to a writer.
- * For compactness, no whitespace is added.
- * <p>
- * Warning: This method assumes that the data structure is acyclical.
- *
- * @return The writer.
- * @throws JSONException
- */
- public Writer write(Writer writer) throws JSONException {
- try {
- boolean b = false;
- int len = length();
- writer.write('[');
- for (int i = 0; i < len; i += 1) {
- if (b) {
- writer.write(',');
- }
- Object v = this.myArrayList.get(i);
- if (v instanceof JSONObject) {
- ((JSONObject)v).write(writer);
- } else if (v instanceof JSONArray) {
- ((JSONArray)v).write(writer);
- } else {
- writer.write(JSONObject.valueToString(v));
- }
- b = true;
- }
- writer.write(']');
- return writer;
- } catch (IOException e) {
- throw new JSONException(e);
- }
- }
- }