add more parses and fix minor memory leak

src/parser/assign/assign.h

@@ -0,0 +1,17 @@
+#ifndef ASSIGN_H
+#define ASSIGN_H
+#include "../parser.h"
+#include "../../lexer/token.h"
+
+typedef struct {
+  ParsedValue * to;
+  TokenType type;
+  ParsedValue * from;
+} ParsedAssign;
+
+ParsedValue *parse_assign(char*file,DArray *parsed, DArray *tokens,
+                          ParsedValue *assign_to, size_t *index);
+
+void free_parse_assign(void*ptr);
+
+#endif // ASSIGN_H