Relocate shaded JSON API in annotation-processor

Move the 'shade' copy of the JSON API to a separate src folder to make
it clearer that we don't own the code. Also polished some formatting
and suppressed a few warnings.

Closes gh-10307

spring-boot-tools/spring-boot-configuration-processor/pom.xml

@@ -40,6 +40,24 @@
 					<proc>none</proc>
 				</configuration>
 			</plugin>
+			<plugin>
+				<groupId>org.codehaus.mojo</groupId>
+				<artifactId>build-helper-maven-plugin</artifactId>
+				<executions>
+					<execution>
+						<id>add-json-shade-source</id>
+						<phase>generate-sources</phase>
+						<goals>
+							<goal>add-source</goal>
+						</goals>
+						<configuration>
+							<sources>
+								<source>${basedir}/src/json-shade/java</source>
+							</sources>
+						</configuration>
+					</execution>
+				</executions>
+			</plugin>
 		</plugins>
 	</build>
 </project>

spring-boot-tools/spring-boot-configuration-processor/src/json-shade/README.adoc

@@ -0,0 +1,5 @@
+## Shaded JSON
+
+This source was originally taken from `com.vaadin.external.google:android-json` which
+provides a clean room re-implementation of the `org.json` APIs and does not include the
+"Do not use for evil" clause.

spring-boot-tools/spring-boot-configuration-processor/src/main/java/org/springframework/boot/configurationprocessor/json/JSON.java → spring-boot-tools/spring-boot-configuration-processor/src/json-shade/java/org/springframework/boot/configurationprocessor/json/JSON.java

@@ -17,9 +17,7 @@
 package org.springframework.boot.configurationprocessor.json;
 
 class JSON {
-	/**
-	 * Returns the input if it is a JSON-permissible value; throws otherwise.
-	 */
+
 	static double checkDouble(double d) throws JSONException {
 		if (Double.isInfinite(d) || Double.isNaN(d)) {
 			throw new JSONException("Forbidden numeric value: " + d);
@@ -31,12 +29,12 @@ static Boolean toBoolean(Object value) {
 		if (value instanceof Boolean) {
 			return (Boolean) value;
 		}
-		else if (value instanceof String) {
+		if (value instanceof String) {
 			String stringValue = (String) value;
 			if ("true".equalsIgnoreCase(stringValue)) {
 				return true;
 			}
-			else if ("false".equalsIgnoreCase(stringValue)) {
+			if ("false".equalsIgnoreCase(stringValue)) {
 				return false;
 			}
 		}
@@ -47,10 +45,10 @@ static Double toDouble(Object value) {
 		if (value instanceof Double) {
 			return (Double) value;
 		}
-		else if (value instanceof Number) {
+		if (value instanceof Number) {
 			return ((Number) value).doubleValue();
 		}
-		else if (value instanceof String) {
+		if (value instanceof String) {
 			try {
 				return Double.valueOf((String) value);
 			}
@@ -64,10 +62,10 @@ static Integer toInteger(Object value) {
 		if (value instanceof Integer) {
 			return (Integer) value;
 		}
-		else if (value instanceof Number) {
+		if (value instanceof Number) {
 			return ((Number) value).intValue();
 		}
-		else if (value instanceof String) {
+		if (value instanceof String) {
 			try {
 				return (int) Double.parseDouble((String) value);
 			}
@@ -81,10 +79,10 @@ static Long toLong(Object value) {
 		if (value instanceof Long) {
 			return (Long) value;
 		}
-		else if (value instanceof Number) {
+		if (value instanceof Number) {
 			return ((Number) value).longValue();
 		}
-		else if (value instanceof String) {
+		if (value instanceof String) {
 			try {
 				return (long) Double.parseDouble((String) value);
 			}
@@ -98,7 +96,7 @@ static String toString(Object value) {
 		if (value instanceof String) {
 			return (String) value;
 		}
-		else if (value != null) {
+		if (value != null) {
 			return String.valueOf(value);
 		}
 		return null;
@@ -109,22 +107,19 @@ public static JSONException typeMismatch(Object indexOrName, Object actual,
 		if (actual == null) {
 			throw new JSONException("Value at " + indexOrName + " is null.");
 		}
-		else {
-			throw new JSONException("Value " + actual + " at " + indexOrName
-					+ " of type " + actual.getClass().getName()
-					+ " cannot be converted to " + requiredType);
-		}
+		throw new JSONException("Value " + actual + " at " + indexOrName + " of type "
+				+ actual.getClass().getName() + " cannot be converted to "
+				+ requiredType);
 	}
 
 	public static JSONException typeMismatch(Object actual, String requiredType)
 			throws JSONException {
 		if (actual == null) {
 			throw new JSONException("Value is null.");
 		}
-		else {
-			throw new JSONException("Value " + actual
-					+ " of type " + actual.getClass().getName()
-					+ " cannot be converted to " + requiredType);
-		}
+		throw new JSONException(
+				"Value " + actual + " of type " + actual.getClass().getName()
+						+ " cannot be converted to " + requiredType);
 	}
+
 }