+ * The default implementations of these methods do nothing. Subclasses may override only those
+ * methods they are interested in. They can use getLocation() to access the current
+ * character position of the parser at any point. The start* methods will be called
+ * while the location points to the first character of the parsed element. The end*
+ * methods will be called while the location points to the character position that directly follows
+ * the last character of the parsed element. Example:
+ *
+ * ["lorem ipsum"] + * ^ ^ + * startString endString + *+ *
+ * Subclasses that build an object representation of the parsed JSON can return arbitrary handler + * objects for JSON arrays and JSON objects in {@link #startArray()} and {@link #startObject()}. + * These handler objects will then be provided in all subsequent parser events for this particular + * array or object. They can be used to keep track the elements of a JSON array or object. + *
+ * + * @param + * The type of handlers used for JSON arrays + * @paramnull literal in the JSON input. This method will be
+ * called when reading the first character of the literal.
+ */
+ public void startNull() {
+ }
+
+ /**
+ * Indicates the end of a null literal in the JSON input. This method will be called
+ * after reading the last character of the literal.
+ */
+ public void endNull() {
+ }
+
+ /**
+ * Indicates the beginning of a boolean literal (true or false) in the
+ * JSON input. This method will be called when reading the first character of the literal.
+ */
+ public void startBoolean() {
+ }
+
+ /**
+ * Indicates the end of a boolean literal (true or false) in the JSON
+ * input. This method will be called after reading the last character of the literal.
+ *
+ * @param value
+ * the parsed boolean value
+ */
+ public void endBoolean(boolean value) {
+ }
+
+ /**
+ * Indicates the beginning of a string in the JSON input. This method will be called when reading
+ * the opening double quote character ('"').
+ */
+ public void startString() {
+ }
+
+ /**
+ * Indicates the end of a string in the JSON input. This method will be called after reading the
+ * closing double quote character ('"').
+ *
+ * @param string
+ * the parsed string
+ */
+ public void endString(String string) {
+ }
+
+ /**
+ * Indicates the beginning of a number in the JSON input. This method will be called when reading
+ * the first character of the number.
+ */
+ public void startNumber() {
+ }
+
+ /**
+ * Indicates the end of a number in the JSON input. This method will be called after reading the
+ * last character of the number.
+ *
+ * @param string
+ * the parsed number string
+ */
+ public void endNumber(String string) {
+ }
+
+ /**
+ * Indicates the beginning of an array in the JSON input. This method will be called when reading
+ * the opening square bracket character ('[').
+ * + * This method may return an object to handle subsequent parser events for this array. This array + * handler will then be provided in all calls to {@link #startArrayValue(Object) + * startArrayValue()}, {@link #endArrayValue(Object) endArrayValue()}, and + * {@link #endArray(Object) endArray()} for this array. + *
+ * + * @return a handler for this array, ornull if not needed
+ */
+ public A startArray() {
+ return null;
+ }
+
+ /**
+ * Indicates the end of an array in the JSON input. This method will be called after reading the
+ * closing square bracket character (']').
+ *
+ * @param array
+ * the array handler returned from {@link #startArray()}, or null if not
+ * provided
+ */
+ public void endArray(A array) {
+ }
+
+ /**
+ * Indicates the beginning of an array element in the JSON input. This method will be called when
+ * reading the first character of the element, just before the call to the start
+ * method for the specific element type ({@link #startString()}, {@link #startNumber()}, etc.).
+ *
+ * @param array
+ * the array handler returned from {@link #startArray()}, or null if not
+ * provided
+ */
+ public void startArrayValue(A array) {
+ }
+
+ /**
+ * Indicates the end of an array element in the JSON input. This method will be called after
+ * reading the last character of the element value, just after the end method for the
+ * specific element type (like {@link #endString(String) endString()}, {@link #endNumber(String)
+ * endNumber()}, etc.).
+ *
+ * @param array
+ * the array handler returned from {@link #startArray()}, or null if not
+ * provided
+ */
+ public void endArrayValue(A array) {
+ }
+
+ /**
+ * Indicates the beginning of an object in the JSON input. This method will be called when reading
+ * the opening curly bracket character ('{').
+ * + * This method may return an object to handle subsequent parser events for this object. This + * object handler will be provided in all calls to {@link #startObjectName(Object) + * startObjectName()}, {@link #endObjectName(Object, String) endObjectName()}, + * {@link #startObjectValue(Object, String) startObjectValue()}, + * {@link #endObjectValue(Object, String) endObjectValue()}, and {@link #endObject(Object) + * endObject()} for this object. + *
+ * + * @return a handler for this object, ornull if not needed
+ */
+ public O startObject() {
+ return null;
+ }
+
+ /**
+ * Indicates the end of an object in the JSON input. This method will be called after reading the
+ * closing curly bracket character ('}').
+ *
+ * @param object
+ * the object handler returned from {@link #startObject()}, or null if not provided
+ */
+ public void endObject(O object) {
+ }
+
+ /**
+ * Indicates the beginning of the name of an object member in the JSON input. This method will be
+ * called when reading the opening quote character ('"') of the member name.
+ *
+ * @param object
+ * the object handler returned from {@link #startObject()}, or null if not
+ * provided
+ */
+ public void startObjectName(O object) {
+ }
+
+ /**
+ * Indicates the end of an object member name in the JSON input. This method will be called after
+ * reading the closing quote character ('"') of the member name.
+ *
+ * @param object
+ * the object handler returned from {@link #startObject()}, or null if not provided
+ * @param name
+ * the parsed member name
+ */
+ public void endObjectName(O object, String name) {
+ }
+
+ /**
+ * Indicates the beginning of the name of an object member in the JSON input. This method will be
+ * called when reading the opening quote character ('"') of the member name.
+ *
+ * @param object
+ * the object handler returned from {@link #startObject()}, or null if not
+ * provided
+ * @param name
+ * the member name
+ */
+ public void startObjectValue(O object, String name) {
+ }
+
+ /**
+ * Indicates the end of an object member value in the JSON input. This method will be called after
+ * reading the last character of the member value, just after the end method for the
+ * specific member type (like {@link #endString(String) endString()}, {@link #endNumber(String)
+ * endNumber()}, etc.).
+ *
+ * @param object
+ * the object handler returned from {@link #startObject()}, or null if not provided
+ * @param name
+ * the parsed member name
+ */
+ public void endObjectValue(O object, String name) {
+ }
+
+}
diff --git a/flatlaf-core/src/main/java/com/formdev/flatlaf/json/JsonParser.java b/flatlaf-core/src/main/java/com/formdev/flatlaf/json/JsonParser.java
new file mode 100644
index 00000000..b001a79f
--- /dev/null
+++ b/flatlaf-core/src/main/java/com/formdev/flatlaf/json/JsonParser.java
@@ -0,0 +1,514 @@
+/*******************************************************************************
+ * Copyright (c) 2013, 2016 EclipseSource.
+ *
+ * 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 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.
+ ******************************************************************************/
+
+// from https://github.com/ralfstx/minimal-json
+
+package com.formdev.flatlaf.json;
+
+import java.io.IOException;
+import java.io.Reader;
+import java.io.StringReader;
+
+
+/**
+ * A streaming parser for JSON text. The parser reports all events to a given handler.
+ */
+class JsonParser {
+
+ private static final int MAX_NESTING_LEVEL = 1000;
+ private static final int MIN_BUFFER_SIZE = 10;
+ private static final int DEFAULT_BUFFER_SIZE = 1024;
+
+ private final JsonHandler
+ * Characters are read in chunks into a default-sized input buffer. Hence, wrapping a reader in an
+ * additional BufferedReader likely won't improve reading performance.
+ *
+ * Characters are read in chunks into an input buffer of the given size. Hence, wrapping a reader
+ * in an additional BufferedReader likely won't improve reading performance.
+ *