##########################################################################
#
# Copyright 2008-2009 VMware, Inc.
# All Rights Reserved.
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# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# THE SOFTWARE.
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##########################################################################/


"""WGL tracing code generator."""


from specs.stdapi import API
from specs.glapi import glapi
from specs.wglapi import wglapi
from dispatch import function_pointer_type, function_pointer_value
from gltrace import GlTracer
from codegen import *


class WglTracer(GlTracer):

    def wrap_ret(self, function, instance):
        GlTracer.wrap_ret(self, function, instance)

        if function.name == "wglGetProcAddress":
            print '    if (%s) {' % instance
        
            func_dict = dict([(f.name, f) for f in glapi.functions + wglapi.functions])

            def handle_case(function_name):
                f = func_dict[function_name]
                ptype = function_pointer_type(f)
                pvalue = function_pointer_value(f)
                print '    %s = (%s)%s;' % (pvalue, ptype, instance)
                print '    %s = (%s)&%s;' % (instance, function.type, f.name);
        
            def handle_default():
                print '    os::log("apitrace: warning: unknown function \\"%s\\"\\n", lpszProc);'

            string_switch('lpszProc', func_dict.keys(), handle_case, handle_default)
            print '    }'


if __name__ == '__main__':
    print
    print '#define _GDI32_'
    print
    print '#include <string.h>'
    print '#include <windows.h>'
    print
    print '#include "trace_writer.hpp"'
    print '#include "os.hpp"'
    print
    print '// To validate our prototypes'
    print '#define GL_GLEXT_PROTOTYPES'
    print '#define WGL_GLXEXT_PROTOTYPES'
    print
    print '#include "glproc.hpp"'
    print '#include "glsize.hpp"'
    print
    api = API()
    api.add_api(glapi)
    api.add_api(wglapi)
    tracer = WglTracer()
    tracer.trace_api(api)