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//
// $Id$
//
// ============================================================================
//
// = LIBRARY
// TAO IDL
//
// = FILENAME
// operation.h
//
// = DESCRIPTION
// Visitor for generating code for IDL operations in client stubs
//
// = AUTHOR
// Aniruddha Gokhale
//
// ============================================================================
#ifndef _BE_VISITOR_OPERATION_OPERATION_H_
#define _BE_VISITOR_OPERATION_OPERATION_H_
// ************************************************************
// Generic Operation visitor with some helper methods
// ************************************************************
class be_visitor_operation : public be_visitor_scope
{
//
// = TITLE
// be_visitor_operation
//
// = DESCRIPTION
// This is a base helper visitor for operation node
//
//
public:
be_visitor_operation (be_visitor_context *ctx);
// constructor
~be_visitor_operation (void);
// destructor
// =helper
virtual int void_return_type (be_type *);
// is my return type void?
virtual int has_param_type (be_operation *,
AST_Argument::Direction);
// does any of the argument node have the specified direction
/// Count the number of "in" and "inout" parameters.
virtual size_t count_non_out_parameters (be_operation *node);
/// Special generation of throw_spec if it is an AMH ExceptionHolder
/// 0:false, 1:true
virtual int is_amh_exception_holder (be_interface *node);
virtual int gen_throw_spec (be_operation *node);
// generate the throw specification
virtual int gen_environment_decl (int argument_emitted,
be_operation *node);
// generate the ACE_ENV_ARG declaration, needs to know if there was
// at least one argument emitted to deal with all the commas.
virtual const char *gen_environment_var (void);
// generate the environment variable declaration
virtual int gen_raise_exception (be_type *return_type,
const char *exception_name,
const char *exception_arguments);
// helper that generates code for raising an exception
virtual int gen_check_exception (be_type *return_type);
// helper that generates code for checking for an exception
virtual int gen_check_interceptor_exception (be_type *);
// helper that generates code for checking for an exception within
// an interceptor try block.
virtual int gen_stub_operation_body (be_operation *node,
be_type *return_type);
// Generates the code from opening brace to closing brace for
// stub operations. Also called (for now)
// from be_visitor_operation_cs, to generate operation stub
// bodies for abstract interfaces (unless and until abstract
// interfaces are made to interoperate with collocatino).
int gen_pre_stub_info (be_operation *node);
// generate any info before the actual code for the stub is generated
virtual int gen_marshal_and_invoke (be_operation *node,
be_type *bt);
// generate code that marshals the arguments and transmits them
virtual int gen_raise_interceptor_exception (
be_type *return_type,
const char *exception_name,
const char *exception_arguments
);
// helper that generates code for raising an exception within
// interceptor's try block
virtual const char *compute_operation_name (be_operation *node);
// compute the operation_remote_proxy_impl name.
// Notice that this operation_remote_proxy_impl
// _does_ include the double quote.
protected:
void gen_arg_template_param_name (AST_Type *bt,
TAO_OutStream *os);
private:
char *operation_name_;
};
#endif /* _BE_VISITOR_OPERATION_OPERATION_H_ */
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