Added a upb_context object, which is like an interpreter context.

1 files changed, 51 insertions, 0 deletions

diff --git a/upb_context.h b/upb_context.h
new file mode 100644
index 0000000..f2bb1df
--- /dev/null
+++ b/upb_context.h
@@ -0,0 +1,51 @@
+/*
+ * upb - a minimalist implementation of protocol buffers.
+ *
+ * A context represents a namespace of proto definitions, sort of like
+ * an interpreter's symbol table.  It is empty when first constructed.
+ * Clients add definitions to the context by supplying serialized
+ * descriptors (as defined in descriptor.proto).
+ *
+ * Copyright (c) 2008 Joshua Haberman.  See LICENSE for details.
+ */
+
+#ifndef UPB_PARSE_H_
+#define UPB_PARSE_H_
+
+#include "upb.h"
+#include "upb_table.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* High-level parsing interface. **********************************************/
+
+enum upb_symbol_type {
+  UPB_SYM_MESSAGE,
+  UPB_SYM_ENUM,
+  UPB_SYM_SERVICE,
+  UPB_SYM_EXTENSION
+};
+
+struct upb_symtab_entry {
+  struct upb_strtable_entry e;
+  enum upb_symbol_type type;
+  union {
+    struct upb_msg *msg;
+    struct upb_enum *_enum;
+    struct upb_svc *svc;
+  } p;
+}
+
+struct upb_context {
+  upb_strtable *symtab;
+};
+
+struct upb_symtab_entry *upb_context_findsym(struct upb_context *c, struct upb_string *s);
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#endif  /* UPB_PARSE_H_ */