Change {Source,Binary}ErrorHandler to C++ (#403)

Added some new classes:

* BinaryErrorHandler: abstract base class
* BinaryErrorHandlerFile: writes errors to a FILE*
* SourceErrorHandler: abstract base class
* SourceErrorHandlerNop: eats all errors
* SourceErrorHandlerFile: writes errors to a FILE*

There are some specific ones as well:

* BinaryErrorHandlerAssert: used in wasm-interp to handle writing out a
  custom header with assertion "failures"; i.e. places where the error
  handler should fire.
* BinaryErrorHandlerModule: used when parsing a .wast, but there's an
  embedded binary file.

1 files changed, 3 insertions, 2 deletions

diff --git a/src/binary-reader-interpreter.h b/src/binary-reader-interpreter.h
index 66fa5542..60f985ce 100644
--- a/src/binary-reader-interpreter.h
+++ b/src/binary-reader-interpreter.h
@@ -21,14 +21,15 @@
 
 namespace wabt {
 
+class BinaryErrorHandler;
 struct DefinedInterpreterModule;
 struct InterpreterEnvironment;
 struct ReadBinaryOptions;
 
-Result read_binary_interpreter(struct InterpreterEnvironment* env,
+Result read_binary_interpreter(InterpreterEnvironment* env,
                                const void* data,
                                size_t size,
-                               const struct ReadBinaryOptions* options,
+                               const ReadBinaryOptions* options,
                                BinaryErrorHandler*,
                                DefinedInterpreterModule** out_module);