Make some binary reading/writing utilities public (#245)

* Make some binary reading/writing utilities public

This is mostly a refactor to make some of the internal
binary reading/writing utilities public and available
to the wasm linker prototype that I'm working on.

1 files changed, 16 insertions, 3 deletions

diff --git a/src/binary-reader.h b/src/binary-reader.h
index e51c0f01..93ffe1cc 100644
--- a/src/binary-reader.h
+++ b/src/binary-reader.h
@@ -49,6 +49,10 @@ typedef struct WasmBinaryReader {
   WasmResult (*begin_module)(uint32_t version, void* user_data);
   WasmResult (*end_module)(void* user_data);
 
+  WasmResult (*begin_section)(WasmBinaryReaderContext* ctx,
+                              WasmBinarySection section_type,
+                              uint32_t size);
+
   /* custom section */
   WasmResult (*begin_custom_section)(WasmBinaryReaderContext* ctx,
                                      uint32_t size,
@@ -242,9 +246,10 @@ typedef struct WasmBinaryReader {
                                    void* user_data);
   WasmResult (*begin_elem_segment_init_expr)(uint32_t index, void* user_data);
   WasmResult (*end_elem_segment_init_expr)(uint32_t index, void* user_data);
-  WasmResult (*on_elem_segment_function_index_count)(uint32_t index,
-                                                     uint32_t count,
-                                                     void* user_data);
+  WasmResult (*on_elem_segment_function_index_count)(
+      WasmBinaryReaderContext* ctx,
+      uint32_t index,
+      uint32_t count);
   WasmResult (*on_elem_segment_function_index)(uint32_t index,
                                                uint32_t func_index,
                                                void* user_data);
@@ -308,6 +313,14 @@ WasmResult wasm_read_binary(struct WasmAllocator* allocator,
                             WasmBinaryReader* reader,
                             uint32_t num_function_passes,
                             const WasmReadBinaryOptions* options);
+
+size_t wasm_read_u32_leb128(const uint8_t* ptr,
+                            const uint8_t* end,
+                            uint32_t* out_value);
+
+size_t wasm_read_i32_leb128(const uint8_t* ptr,
+                            const uint8_t* end,
+                            uint32_t* out_value);
 WASM_EXTERN_C_END
 
 #endif /* WASM_BINARY_READER_H_ */