Throw exception on null pointers in raw toNative

Source/bindings/dart/custom/DartWebGLRenderingContextCustom.cpp

 // Copyright 2011, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //    * Redistributions of source code must retain the above copyright
 // notice, this list of conditions and the following disclaimer.
 //    * Redistributions in binary form must reproduce the above
@@ skipping 376 matching lines @@
 fail:
     Dart_ThrowException(exception);
     ASSERT_NOT_REACHED();
 }
 
 void getAttachedShadersCallback(Dart_NativeArguments args)
 {
     Dart_Handle exception = 0;
     {
         WebGLRenderingContext* context = DartDOMWrapper::receiver<WebGLRenderingContext>(args);
-        WebGLProgram* program = DartWebGLProgram::toNative(Dart_GetNativeArgument(args, 1), exception);
+        WebGLProgram* program = DartWebGLProgram::toNativeWithNullCheck(Dart_GetNativeArgument(args, 1), exception);
         if (exception)
             goto fail;
 
         Vector<RefPtr<WebGLShader> > shaders;
         bool succeed = context->getAttachedShaders(program, shaders);
         if (!succeed) {
             Dart_SetReturnValue(args, Dart_Null());
             return;
         }
         Dart_Handle result;
@@ skipping 89 matching lines @@
 fail:
     Dart_ThrowException(exception);
     ASSERT_NOT_REACHED();
 }
 
 void getProgramParameterCallback(Dart_NativeArguments args)
 {
     Dart_Handle exception = 0;
     {
         WebGLRenderingContext* context = DartDOMWrapper::receiver<WebGLRenderingContext>(args);
-        WebGLProgram* program = DartWebGLProgram::toNative(Dart_GetNativeArgument(args, 1), exception);
+        WebGLProgram* program = DartWebGLProgram::toNativeWithNullCheck(Dart_GetNativeArgument(args, 1), exception);
         if (exception)
             goto fail;
         int pname = DartUtilities::dartToInt(Dart_GetNativeArgument(args, 2), exception);
         if (exception)
             goto fail;
 
         WebGLGetInfo info = context->getProgramParameter(program, pname);
         Dart_Handle result = webGLGetInfoToDart(info);
         if (!DartUtilities::checkResult(result, exception))
             goto fail;
@@ skipping 10 matching lines @@
 void getRenderbufferParameterCallback(Dart_NativeArguments args)
 {
     getObjectParameter(args, kRenderbuffer);
 }
 
 void getShaderParameterCallback(Dart_NativeArguments args)
 {
     Dart_Handle exception = 0;
     {
         WebGLRenderingContext* context = DartDOMWrapper::receiver<WebGLRenderingContext>(args);
-        WebGLShader* shader = DartWebGLShader::toNative(Dart_GetNativeArgument(args, 1), exception);
+        WebGLShader* shader = DartWebGLShader::toNativeWithNullCheck(Dart_GetNativeArgument(args, 1), exception);
         if (exception)
             goto fail;
         int pname = DartUtilities::dartToInt(Dart_GetNativeArgument(args, 2), exception);
         if (exception)
             goto fail;
 
         WebGLGetInfo info = context->getShaderParameter(shader, pname);
         Dart_Handle result = webGLGetInfoToDart(info);
         if (!DartUtilities::checkResult(result, exception))
             goto fail;
@@ skipping 84 matching lines @@
         WebGLRenderingContext* context = DartDOMWrapper::receiver<WebGLRenderingContext>(args);
         int index = -1;
         WebGLUniformLocation* location = 0;
 
         if (isFunctionToCallForAttribute(functionToCall)) {
             int indexParam = DartUtilities::dartToInt(Dart_GetNativeArgument(args, 1), exception);
             if (exception)
                 goto fail;
             index = indexParam;
         } else {
-            WebGLUniformLocation* locationParam = DartWebGLUniformLocation::toNative(Dart_GetNativeArgument(args, 1), exception);
+            WebGLUniformLocation* locationParam = DartWebGLUniformLocation::toNativeWithNullCheck(Dart_GetNativeArgument(args, 1), exception);
             if (exception)
                 goto fail;
             location = locationParam;
         }
 
         RefPtr<Float32Array> array = DartUtilities::dartToFloat32Array(Dart_GetNativeArgument(args, 2), exception);
         if (exception)
             goto fail;
 
         switch (functionToCall) {
@@ skipping 37 matching lines @@
         // Forms:
         // * glUniform1iv(GLUniformLocation location, Array data);
         // * glUniform1iv(GLUniformLocation location, Int32Array data);
         // * glUniform2iv(GLUniformLocation location, Array data);
         // * glUniform2iv(GLUniformLocation location, Int32Array data);
         // * glUniform3iv(GLUniformLocation location, Array data);
         // * glUniform3iv(GLUniformLocation location, Int32Array data);
         // * glUniform4iv(GLUniformLocation location, Array data);
         // * glUniform4iv(GLUniformLocation location, Int32Array data);
         WebGLRenderingContext* context = DartDOMWrapper::receiver<WebGLRenderingContext>(args);
-        WebGLUniformLocation* location = DartWebGLUniformLocation::toNative(Dart_GetNativeArgument(args, 1), exception);
+        WebGLUniformLocation* location = DartWebGLUniformLocation::toNativeWithNullCheck(Dart_GetNativeArgument(args, 1), exception);
         if (exception)
             goto fail;
 
         RefPtr<Int32Array> array = DartUtilities::dartToInt32Array(Dart_GetNativeArgument(args, 2), exception);
         if (exception)
             goto fail;
 
         switch (functionToCall) {
         case kUniform1v:
             context->uniform1iv(location, array.get());
@@ skipping 25 matching lines @@
     {
         // Forms:
         // * glUniformMatrix2fv(GLint location, GLboolean transpose, Array data);
         // * glUniformMatrix2fv(GLint location, GLboolean transpose, Float32Array data);
         // * glUniformMatrix3fv(GLint location, GLboolean transpose, Array data);
         // * glUniformMatrix3fv(GLint location, GLboolean transpose, Float32Array data);
         // * glUniformMatrix4fv(GLint location, GLboolean transpose, Array data);
         // * glUniformMatrix4fv(GLint location, GLboolean transpose, Float32Array data);
         //
         WebGLRenderingContext* context = DartDOMWrapper::receiver<WebGLRenderingContext>(args);
-        WebGLUniformLocation* location = DartWebGLUniformLocation::toNative(Dart_GetNativeArgument(args, 1), exception);
+        WebGLUniformLocation* location = DartWebGLUniformLocation::toNativeWithNullCheck(Dart_GetNativeArgument(args, 1), exception);
         if (exception)
             goto fail;
         bool transpose = DartUtilities::dartToBool(Dart_GetNativeArgument(args, 2), exception);
         if (exception)
             goto fail;
 
         RefPtr<Float32Array> array = DartUtilities::dartToFloat32Array(Dart_GetNativeArgument(args, 3), exception);
         if (exception)
             goto fail;
 
@@ skipping 90 matching lines @@
 }
 
 void vertexAttrib4fvCallback(Dart_NativeArguments args)
 {
     vertexAttribAndUniformHelperf(args, kVertexAttrib4v);
 }
 
 }
 
 }