1 files changed, 68 insertions, 0 deletions
diff --git a/upb.h b/upb.h
new file mode 100644
index 0000000..d63e207
--- /dev/null
+++ b/upb.h
@@ -0,0 +1,68 @@
+/*
+ * upb - a minimalist implementation of protocol buffers.
+ *
+ * Copyright (c) 2009 Joshua Haberman.  See LICENSE for details.
+ */
+
+#ifndef UPB_H_
+#define UPB_H_
+
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>  /* for size_t. */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* The maximum that any submessages can be nested.  Matches proto2's limit. */
+#define UPB_MAX_NESTING 64
+
+/* A list of types as they are encoded on-the-wire. */
+typedef enum upb_wire_type {
+  UPB_WIRE_TYPE_VARINT      = 0,
+  UPB_WIRE_TYPE_64BIT       = 1,
+  UPB_WIRE_TYPE_DELIMITED   = 2,
+  UPB_WIRE_TYPE_START_GROUP = 3,
+  UPB_WIRE_TYPE_END_GROUP   = 4,
+  UPB_WIRE_TYPE_32BIT       = 5,
+} upb_wire_type_t;
+
+struct upb_delimited {
+  size_t offset;  /* relative to the beginning of the stream. */
+  uint32_t len;
+};
+
+/* A value as it is encoded on-the-wire. */
+union upb_wire_value {
+  uint64_t varint;
+  uint64_t _64bit;
+  uint32_t _32bit;
+  struct upb_delimited delimited;
+};
+
+/* A value as described in a .proto file. */
+union upb_value {
+  double _double;
+  float  _float;
+  int32_t int32;
+  int64_t int64;
+  uint32_t uint32;
+  uint64_t uint64;
+  bool _bool;
+  struct upb_delimited delimited;
+};
+
+typedef int32_t upb_field_number_t;
+
+/* A tag occurs before each value on-the-wire. */
+struct upb_tag {
+  upb_field_number_t field_number;
+  upb_wire_type_t wire_type;
+};
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#endif  /* UPB_H_ */