* 修改编译方式为CMake

* 删除C++适配代码
* 修改编译告警

common/json/include/json_checker.h

@@ -0,0 +1,39 @@
+/* JSON_checker.h */
+
+/* 2016-11-11 */
+
+/*
+    The JSON_checker_struct is used to hold the state of the JSON_checker
+    so that the code can be reentrant.
+*/
+
+typedef struct JSON_checker_struct {
+    int valid;
+    int state;
+    int depth;
+    int top;
+    int* stack;
+} * JSON_checker;
+
+
+extern JSON_checker new_JSON_checker(int depth);
+
+/*
+    Make a new JSON_checker. You indicate the maximum depth that is allowed.
+    It will return an object that you will pass to the other functions.
+    They will destroy the object for you.
+*/
+
+extern int JSON_checker_char(JSON_checker jc, int next_char);
+
+/*
+    You should call JSON_checker_char for each character of the JSON text.
+    It will return false if the text is not right.
+*/
+
+extern int JSON_checker_done(JSON_checker jc);
+
+/*
+    When there are no more JSON text characters, call JSON_checker_done.
+    It will return false if the text was not right.
+*/