Add feature to SimpleJsonParser

Now it can parse nested lists as map values.

Fixes gh-169

spring-boot/src/main/java/org/springframework/boot/config/SimpleJsonParser.java

@@ -110,12 +110,7 @@ public class SimpleJsonParser implements JsonParser {
 			if (values.length > 0) {
 				String string = trimLeadingCharacter(
 						trimTrailingCharacter(values[1], '"'), '"');
-				if (string.startsWith("{") && string.endsWith("}")) {
+				value = parseInternal(string);
-					value = parseInternal(string);
-				}
-				else {
-					value = string;
-				}
 			}
 			map.put(key, value);
 		}
@@ -126,6 +121,7 @@ public class SimpleJsonParser implements JsonParser {
 		List<String> list = new ArrayList<String>();
 		int index = 0;
 		int inObject = 0;
+		int inList = 0;
 		StringBuilder build = new StringBuilder();
 		while (index < json.length()) {
 			char current = json.charAt(index);
@@ -135,7 +131,13 @@ public class SimpleJsonParser implements JsonParser {
 			if (current == '}') {
 				inObject--;
 			}
-			if (current == ',' && inObject == 0) {
+			if (current == '[') {
+				inList++;
+			}
+			if (current == ']') {
+				inList--;
+			}
+			if (current == ',' && inObject == 0 && inList == 0) {
 				list.add(build.toString());
 				build.setLength(0);
 			}

spring-boot/src/test/java/org/springframework/boot/config/SimpleJsonParserTests.java

@@ -20,8 +20,6 @@ import java.util.List;
 import java.util.Map;
 
 import org.junit.Test;
-import org.springframework.boot.config.JsonParser;
-import org.springframework.boot.config.SimpleJsonParser;
 
 import static org.junit.Assert.assertEquals;
 
@@ -74,4 +72,13 @@ public class SimpleJsonParserTests {
 		assertEquals(2, ((Map<String, Object>) list.get(1)).size());
 	}
 
+	@SuppressWarnings("unchecked")
+	@Test
+	public void testMapOfLists() {
+		Map<String, Object> map = this.parser
+				.parseMap("{\"foo\":[{\"foo\":\"bar\",\"spam\":1},{\"foo\":\"baz\",\"spam\":2}]}");
+		assertEquals(1, map.size());
+		assertEquals(2, ((List<Object>) map.get("foo")).size());
+	}
+
 }