Convert everything to c api

src/validate.cpp

@@ -1,8 +1,8 @@
 #include <fcntl.h>
+#include <memory>
 #include <unistd.h>
 
 #include "callbacks.h"
-#include "parser3.h"
 #include "weaseljson.h"
 
 int main(int argc, char **argv) {
@@ -16,7 +16,8 @@ int main(int argc, char **argv) {
     return 1;
   }
   auto c = noopCallbacks();
-  parser3::Parser3 parser(&c, nullptr);
+  std::unique_ptr<WeaselJsonParser, decltype(&WeaselJsonParser_destroy)> parser{
+      WeaselJsonParser_create(1024, &c, nullptr), WeaselJsonParser_destroy};
   for (;;) {
     char buf[1024];
     int l = read(fd, buf, sizeof(buf));
@@ -24,7 +25,7 @@ int main(int argc, char **argv) {
       perror("read");
       return 1;
     }
-    switch (parser.parse(buf, l)) {
+    switch (WeaselJsonParser_parse(parser.get(), buf, l)) {
     case WeaselJson_OK:
       return 0;
     case WeaselJson_AGAIN: