write C file

src/main.cc

@@ -5,9 +5,12 @@
 #include <sys/types.h>
 #include <sys/wait.h>
 #include <stdbool.h>
+#include <string.h>
 
 static char preprocessed_fname[] = "/tmp/cxlppXXXXXX";
+static char c_fname[] = "/tmp/cxlcXXXXXX";
 static bool preprocessed_fname_created = false;
+static bool c_fname_created = false;
 
 bool preprocess(const char * input_fname)
 {
@@ -38,8 +41,47 @@ bool preprocess(const char * input_fname)
     return true;
 }
 
-void emit_c(Node * node)
+void write_node(FILE * file, Node * node)
 {
+    switch (node->type)
+    {
+    case NODE_TYPE_LIST:
+        {
+            bool space = false;
+            for (auto subnode : *node->list)
+            {
+                if (space)
+                {
+                    fprintf(file, " ");
+                }
+                write_node(file, subnode);
+                space = true;
+            }
+        }
+        break;
+    case NODE_TYPE_TOKEN:
+        fprintf(file, "%s", node->token.text->c_str());
+        if (*node->token.text == ";")
+        {
+            fprintf(file, "\n");
+        }
+        break;
+    }
+}
+
+bool emit_c(Node * node)
+{
+    int fd = mkstemp(c_fname);
+    if (fd < 0)
+    {
+        perror("mkstemp");
+        return false;
+    }
+    FILE * file = fdopen(fd, "w");
+    c_fname_created = true;
+    write_node(file, node);
+    fclose(file);
+    return true;
 }
 
 int main(int argc, char * argv[])